Add editor undo/redo feature

CMakeLists.txt

@@ -2285,13 +2285,22 @@ if(CLIENT)
     component.h
     editor.cpp
     editor.h
+    editor_action.h
+    editor_actions.cpp
+    editor_actions.h
+    editor_history.cpp
+    editor_history.h
     editor_object.cpp
     editor_object.h
+    editor_props.cpp
+    editor_trackers.cpp
+    editor_trackers.h
     explanations.cpp
     map_grid.cpp
     map_grid.h
     map_view.cpp
     map_view.h
+    mapitems.h
     mapitems/envelope.cpp
     mapitems/envelope.h
     mapitems/image.cpp

src/engine/shared/config_variables.h

@@ -248,6 +248,7 @@ MACRO_CONFIG_INT(ClRefreshRateInactive, cl_refresh_rate_inactive, 120, 0, 10000,
 MACRO_CONFIG_INT(ClEditor, cl_editor, 0, 0, 1, CFGFLAG_CLIENT, "Open the map editor")
 MACRO_CONFIG_INT(ClEditorDilate, cl_editor_dilate, 1, 0, 1, CFGFLAG_SAVE | CFGFLAG_CLIENT, "Automatically dilates embedded images")
 MACRO_CONFIG_STR(ClSkinFilterString, cl_skin_filter_string, 25, "", CFGFLAG_SAVE | CFGFLAG_CLIENT, "Skin filtering string")
+MACRO_CONFIG_INT(ClEditorMaxHistory, cl_editor_max_history, 50, 1, 500, CFGFLAG_SAVE | CFGFLAG_CLIENT, "Maximum number of undo actions in the editor history (not shared between editor, envelope editor and server settings editor)")
 
 MACRO_CONFIG_INT(ClAutoDemoRecord, cl_auto_demo_record, 1, 0, 1, CFGFLAG_SAVE | CFGFLAG_CLIENT, "Automatically record demos")
 MACRO_CONFIG_INT(ClAutoDemoOnConnect, cl_auto_demo_on_connect, 0, 0, 1, CFGFLAG_SAVE | CFGFLAG_CLIENT, "Only start a new demo when connect while automatically record demos")

src/engine/textrender.h

@@ -140,6 +140,8 @@ MAYBE_UNUSED static const char *FONT_ICON_DICE_FIVE = "\xEF\x94\xA3";
 MAYBE_UNUSED static const char *FONT_ICON_DICE_SIX = "\xEF\x94\xA6";
 
 MAYBE_UNUSED static const char *FONT_ICON_LAYER_GROUP = "\xEF\x97\xBD";
+MAYBE_UNUSED static const char *FONT_ICON_UNDO = "\xEF\x8B\xAA";
+MAYBE_UNUSED static const char *FONT_ICON_REDO = "\xEF\x8B\xB9";
 } // end namespace FontIcons
 
 enum ETextCursorSelectionMode

src/game/client/ui.cpp

@@ -490,19 +490,37 @@ int CUI::DoDraggableButtonLogic(const void *pID, int Checked, const CUIRect *pRe
 	return ReturnValue;
 }
 
-int CUI::DoPickerLogic(const void *pID, const CUIRect *pRect, float *pX, float *pY)
+EEditState CUI::DoPickerLogic(const void *pID, const CUIRect *pRect, float *pX, float *pY)
 {
+	static const void *s_pEditing = nullptr;
+
 	if(MouseHovered(pRect))
 		SetHotItem(pID);
 
+	EEditState Res = EEditState::EDITING;
+
 	if(HotItem() == pID && MouseButtonClicked(0))
+	{
 		SetActiveItem(pID);
+		if(!s_pEditing)
+		{
+			s_pEditing = pID;
+			Res = EEditState::START;
+		}
+	}
 
 	if(CheckActiveItem(pID) && !MouseButton(0))
+	{
 		SetActiveItem(nullptr);
+		if(s_pEditing == pID)
+		{
+			s_pEditing = nullptr;
+			Res = EEditState::END;
+		}
+	}
 
-	if(!CheckActiveItem(pID))
-		return 0;
+	if(!CheckActiveItem(pID) && Res == EEditState::EDITING)
+		return EEditState::NONE;
 
 	if(Input()->ShiftIsPressed())
 		m_MouseSlow = true;
@@ -512,7 +530,7 @@ int CUI::DoPickerLogic(const void *pID, const CUIRect *pRect, float *pX, float *
 	if(pY)
 		*pY = clamp(m_MouseY - pRect->y, 0.0f, pRect->h);
 
-	return 1;
+	return Res;
 }
 
 void CUI::DoSmoothScrollLogic(float *pScrollOffset, float *pScrollOffsetChange, float ViewPortSize, float TotalSize, bool SmoothClamp, float ScrollSpeed)
@@ -981,12 +999,19 @@ int CUI::DoButton_PopupMenu(CButtonContainer *pButtonContainer, const char *pTex
 }
 
 int64_t CUI::DoValueSelector(const void *pID, const CUIRect *pRect, const char *pLabel, int64_t Current, int64_t Min, int64_t Max, const SValueSelectorProperties &Props)
+{
+	return DoValueSelectorWithState(pID, pRect, pLabel, Current, Min, Max, Props).m_Value;
+}
+
+SEditResult<int64_t> CUI::DoValueSelectorWithState(const void *pID, const CUIRect *pRect, const char *pLabel, int64_t Current, int64_t Min, int64_t Max, const SValueSelectorProperties &Props)
 {
 	// logic
 	static float s_Value;
 	static CLineInputNumber s_NumberInput;
 	static const void *s_pLastTextID = pID;
 	const bool Inside = MouseInside(pRect);
+	static const void *s_pEditing = nullptr;
+	EEditState State = EEditState::NONE;
 
 	if(Inside)
 		SetHotItem(pID);
@@ -1091,7 +1116,23 @@ int64_t CUI::DoValueSelector(const void *pID, const CUIRect *pRect, const char *
 	if(!m_ValueSelectorTextMode)
 		s_NumberInput.Clear();
 
-	return Current;
+	if(s_pEditing == pID)
+		State = EEditState::EDITING;
+
+	bool MouseLocked = CheckMouseLock();
+	if((MouseLocked || m_ValueSelectorTextMode) && !s_pEditing)
+	{
+		State = EEditState::START;
+		s_pEditing = pID;
+	}
+
+	if(!CheckMouseLock() && !m_ValueSelectorTextMode && s_pEditing == pID)
+	{
+		State = EEditState::END;
+		s_pEditing = nullptr;
+	}
+
+	return SEditResult<int64_t>{State, Current};
 }
 
 float CUI::DoScrollbarV(const void *pID, const CUIRect *pRect, float Current)
@@ -1686,6 +1727,7 @@ CUI::EPopupMenuFunctionResult CUI::PopupColorPicker(void *pContext, CUIRect View
 {
 	SColorPickerPopupContext *pColorPicker = static_cast<SColorPickerPopupContext *>(pContext);
 	CUI *pUI = pColorPicker->m_pUI;
+	pColorPicker->m_State = EEditState::NONE;
 
 	CUIRect ColorsArea, HueArea, BottomArea, ModeButtonArea, HueRect, SatRect, ValueRect, HexRect, AlphaRect;
 
@@ -1759,10 +1801,10 @@ CUI::EPopupMenuFunctionResult CUI::PopupColorPicker(void *pContext, CUIRect View
 		HuePartialArea.Draw4(TL, TL, BL, BL, IGraphics::CORNER_NONE, 0.0f);
 	}
 
-	const auto &&RenderAlphaSelector = [&](unsigned OldA) -> unsigned {
+	const auto &&RenderAlphaSelector = [&](unsigned OldA) -> SEditResult<int64_t> {
 		if(pColorPicker->m_Alpha)
 		{
-			return pUI->DoValueSelector(&pColorPicker->m_aValueSelectorIds[3], &AlphaRect, "A:", OldA, 0, 255);
+			return pUI->DoValueSelectorWithState(&pColorPicker->m_aValueSelectorIds[3], &AlphaRect, "A:", OldA, 0, 255);
 		}
 		else
 		{
@@ -1770,7 +1812,7 @@ CUI::EPopupMenuFunctionResult CUI::PopupColorPicker(void *pContext, CUIRect View
 			str_format(aBuf, sizeof(aBuf), "A: %d", OldA);
 			pUI->DoLabel(&AlphaRect, aBuf, 10.0f, TEXTALIGN_MC);
 			AlphaRect.Draw(ColorRGBA(0.0f, 0.0f, 0.0f, 0.65f), IGraphics::CORNER_ALL, 3.0f);
-			return OldA;
+			return {EEditState::NONE, OldA};
 		}
 	};
 
@@ -1782,10 +1824,10 @@ CUI::EPopupMenuFunctionResult CUI::PopupColorPicker(void *pContext, CUIRect View
 		const unsigned OldV = (unsigned)(PickerColorHSV.v * 255.0f);
 		const unsigned OldA = (unsigned)(PickerColorHSV.a * 255.0f);
 
-		const unsigned H = pUI->DoValueSelector(&pColorPicker->m_aValueSelectorIds[0], &HueRect, "H:", OldH, 0, 255);
-		const unsigned S = pUI->DoValueSelector(&pColorPicker->m_aValueSelectorIds[1], &SatRect, "S:", OldS, 0, 255);
-		const unsigned V = pUI->DoValueSelector(&pColorPicker->m_aValueSelectorIds[2], &ValueRect, "V:", OldV, 0, 255);
-		const unsigned A = RenderAlphaSelector(OldA);
+		const auto [StateH, H] = pUI->DoValueSelectorWithState(&pColorPicker->m_aValueSelectorIds[0], &HueRect, "H:", OldH, 0, 255);
+		const auto [StateS, S] = pUI->DoValueSelectorWithState(&pColorPicker->m_aValueSelectorIds[1], &SatRect, "S:", OldS, 0, 255);
+		const auto [StateV, V] = pUI->DoValueSelectorWithState(&pColorPicker->m_aValueSelectorIds[2], &ValueRect, "V:", OldV, 0, 255);
+		const auto [StateA, A] = RenderAlphaSelector(OldA);
 
 		if(OldH != H || OldS != S || OldV != V || OldA != A)
 		{
@@ -1793,6 +1835,15 @@ CUI::EPopupMenuFunctionResult CUI::PopupColorPicker(void *pContext, CUIRect View
 			PickerColorHSL = color_cast<ColorHSLA>(PickerColorHSV);
 			PickerColorRGB = color_cast<ColorRGBA>(PickerColorHSL);
 		}
+
+		for(auto State : {StateH, StateS, StateV, StateA})
+		{
+			if(State != EEditState::NONE)
+			{
+				pColorPicker->m_State = State;
+				break;
+			}
+		}
 	}
 	else if(pColorPicker->m_ColorMode == SColorPickerPopupContext::MODE_RGBA)
 	{
@@ -1801,10 +1852,10 @@ CUI::EPopupMenuFunctionResult CUI::PopupColorPicker(void *pContext, CUIRect View
 		const unsigned OldB = (unsigned)(PickerColorRGB.b * 255.0f);
 		const unsigned OldA = (unsigned)(PickerColorRGB.a * 255.0f);
 
-		const unsigned R = pUI->DoValueSelector(&pColorPicker->m_aValueSelectorIds[0], &HueRect, "R:", OldR, 0, 255);
-		const unsigned G = pUI->DoValueSelector(&pColorPicker->m_aValueSelectorIds[1], &SatRect, "G:", OldG, 0, 255);
-		const unsigned B = pUI->DoValueSelector(&pColorPicker->m_aValueSelectorIds[2], &ValueRect, "B:", OldB, 0, 255);
-		const unsigned A = RenderAlphaSelector(OldA);
+		const auto [StateR, R] = pUI->DoValueSelectorWithState(&pColorPicker->m_aValueSelectorIds[0], &HueRect, "R:", OldR, 0, 255);
+		const auto [StateG, G] = pUI->DoValueSelectorWithState(&pColorPicker->m_aValueSelectorIds[1], &SatRect, "G:", OldG, 0, 255);
+		const auto [StateB, B] = pUI->DoValueSelectorWithState(&pColorPicker->m_aValueSelectorIds[2], &ValueRect, "B:", OldB, 0, 255);
+		const auto [StateA, A] = RenderAlphaSelector(OldA);
 
 		if(OldR != R || OldG != G || OldB != B || OldA != A)
 		{
@@ -1812,6 +1863,15 @@ CUI::EPopupMenuFunctionResult CUI::PopupColorPicker(void *pContext, CUIRect View
 			PickerColorHSL = color_cast<ColorHSLA>(PickerColorRGB);
 			PickerColorHSV = color_cast<ColorHSVA>(PickerColorHSL);
 		}
+
+		for(auto State : {StateR, StateG, StateB, StateA})
+		{
+			if(State != EEditState::NONE)
+			{
+				pColorPicker->m_State = State;
+				break;
+			}
+		}
 	}
 	else if(pColorPicker->m_ColorMode == SColorPickerPopupContext::MODE_HSLA)
 	{
@@ -1820,10 +1880,10 @@ CUI::EPopupMenuFunctionResult CUI::PopupColorPicker(void *pContext, CUIRect View
 		const unsigned OldL = (unsigned)(PickerColorHSL.l * 255.0f);
 		const unsigned OldA = (unsigned)(PickerColorHSL.a * 255.0f);
 
-		const unsigned H = pUI->DoValueSelector(&pColorPicker->m_aValueSelectorIds[0], &HueRect, "H:", OldH, 0, 255);
-		const unsigned S = pUI->DoValueSelector(&pColorPicker->m_aValueSelectorIds[1], &SatRect, "S:", OldS, 0, 255);
-		const unsigned L = pUI->DoValueSelector(&pColorPicker->m_aValueSelectorIds[2], &ValueRect, "L:", OldL, 0, 255);
-		const unsigned A = RenderAlphaSelector(OldA);
+		const auto [StateH, H] = pUI->DoValueSelectorWithState(&pColorPicker->m_aValueSelectorIds[0], &HueRect, "H:", OldH, 0, 255);
+		const auto [StateS, S] = pUI->DoValueSelectorWithState(&pColorPicker->m_aValueSelectorIds[1], &SatRect, "S:", OldS, 0, 255);
+		const auto [StateL, L] = pUI->DoValueSelectorWithState(&pColorPicker->m_aValueSelectorIds[2], &ValueRect, "L:", OldL, 0, 255);
+		const auto [StateA, A] = RenderAlphaSelector(OldA);
 
 		if(OldH != H || OldS != S || OldL != L || OldA != A)
 		{
@@ -1831,6 +1891,15 @@ CUI::EPopupMenuFunctionResult CUI::PopupColorPicker(void *pContext, CUIRect View
 			PickerColorHSV = color_cast<ColorHSVA>(PickerColorHSL);
 			PickerColorRGB = color_cast<ColorRGBA>(PickerColorHSL);
 		}
+
+		for(auto State : {StateH, StateS, StateL, StateA})
+		{
+			if(State != EEditState::NONE)
+			{
+				pColorPicker->m_State = State;
+				break;
+			}
+		}
 	}
 	else
 	{
@@ -1842,7 +1911,7 @@ CUI::EPopupMenuFunctionResult CUI::PopupColorPicker(void *pContext, CUIRect View
 	Props.m_IsHex = true;
 	Props.m_HexPrefix = pColorPicker->m_Alpha ? 8 : 6;
 	const unsigned OldHex = PickerColorRGB.PackAlphaLast(pColorPicker->m_Alpha);
-	const unsigned Hex = pUI->DoValueSelector(&pColorPicker->m_aValueSelectorIds[4], &HexRect, "Hex:", OldHex, 0, pColorPicker->m_Alpha ? 0xFFFFFFFFll : 0xFFFFFFll, Props);
+	auto [HexState, Hex] = pUI->DoValueSelectorWithState(&pColorPicker->m_aValueSelectorIds[4], &HexRect, "Hex:", OldHex, 0, pColorPicker->m_Alpha ? 0xFFFFFFFFll : 0xFFFFFFll, Props);
 	if(OldHex != Hex)
 	{
 		const float OldAlpha = PickerColorRGB.a;
@@ -1853,21 +1922,28 @@ CUI::EPopupMenuFunctionResult CUI::PopupColorPicker(void *pContext, CUIRect View
 		PickerColorHSV = color_cast<ColorHSVA>(PickerColorHSL);
 	}
 
+	if(HexState != EEditState::NONE)
+		pColorPicker->m_State = HexState;
+
 	// Logic
 	float PickerX, PickerY;
-	if(pUI->DoPickerLogic(&pColorPicker->m_ColorPickerId, &ColorsArea, &PickerX, &PickerY))
+	EEditState ColorPickerRes = pUI->DoPickerLogic(&pColorPicker->m_ColorPickerId, &ColorsArea, &PickerX, &PickerY);
+	if(ColorPickerRes != EEditState::NONE)
 	{
 		PickerColorHSV.y = PickerX / ColorsArea.w;
 		PickerColorHSV.z = 1.0f - PickerY / ColorsArea.h;
 		PickerColorHSL = color_cast<ColorHSLA>(PickerColorHSV);
 		PickerColorRGB = color_cast<ColorRGBA>(PickerColorHSL);
+		pColorPicker->m_State = ColorPickerRes;
 	}
 
-	if(pUI->DoPickerLogic(&pColorPicker->m_HuePickerId, &HueArea, &PickerX, &PickerY))
+	EEditState HuePickerRes = pUI->DoPickerLogic(&pColorPicker->m_HuePickerId, &HueArea, &PickerX, &PickerY);
+	if(HuePickerRes != EEditState::NONE)
 	{
 		PickerColorHSV.x = 1.0f - PickerY / HueArea.h;
 		PickerColorHSL = color_cast<ColorHSLA>(PickerColorHSV);
 		PickerColorRGB = color_cast<ColorRGBA>(PickerColorHSL);
+		pColorPicker->m_State = HuePickerRes;
 	}
 
 	// Marker Color Area

src/game/client/ui.h

@@ -18,6 +18,22 @@ class IClient;
 class IGraphics;
 class IKernel;
 
+enum class EEditState
+{
+	NONE,
+	START,
+	EDITING,
+	END,
+	ONE_GO
+};
+
+template<typename T>
+struct SEditResult
+{
+	EEditState m_State;
+	T m_Value;
+};
+
 struct SUIAnimator
 {
 	bool m_Active;
@@ -488,7 +504,7 @@ public:
 
 	int DoButtonLogic(const void *pID, int Checked, const CUIRect *pRect);
 	int DoDraggableButtonLogic(const void *pID, int Checked, const CUIRect *pRect, bool *pClicked, bool *pAbrupted);
-	int DoPickerLogic(const void *pID, const CUIRect *pRect, float *pX, float *pY);
+	EEditState DoPickerLogic(const void *pID, const CUIRect *pRect, float *pX, float *pY);
 	void DoSmoothScrollLogic(float *pScrollOffset, float *pScrollOffsetChange, float ViewPortSize, float TotalSize, bool SmoothClamp = false, float ScrollSpeed = 10.0f);
 	static vec2 CalcAlignedCursorPos(const CUIRect *pRect, vec2 TextSize, int Align, const float *pBiggestCharHeight = nullptr);
 
@@ -505,6 +521,7 @@ public:
 	int DoButton_PopupMenu(CButtonContainer *pButtonContainer, const char *pText, const CUIRect *pRect, float Size, int Align, float Padding = 0.0f, bool TransparentInactive = false, bool Enabled = true);
 
 	// value selector
+	SEditResult<int64_t> DoValueSelectorWithState(const void *pID, const CUIRect *pRect, const char *pLabel, int64_t Current, int64_t Min, int64_t Max, const SValueSelectorProperties &Props = {});
 	int64_t DoValueSelector(const void *pID, const CUIRect *pRect, const char *pLabel, int64_t Current, int64_t Min, int64_t Max, const SValueSelectorProperties &Props = {});
 	bool IsValueSelectorTextMode() const { return m_ValueSelectorTextMode; }
 	void SetValueSelectorTextMode(bool TextMode) { m_ValueSelectorTextMode = TextMode; }
@@ -620,6 +637,7 @@ public:
 		const char m_ColorPickerId = 0;
 		const char m_aValueSelectorIds[5] = {0};
 		CButtonContainer m_aModeButtons[(int)MODE_HSLA + 1];
+		EEditState m_State;
 	};
 	void ShowPopupColorPicker(float X, float Y, SColorPickerPopupContext *pContext);
 

src/game/editor/auto_map.cpp

@@ -9,6 +9,7 @@
 
 #include "auto_map.h"
 #include "editor.h" // TODO: only needs CLayerTiles
+#include "editor_actions.h"
 
 // Based on triple32inc from https://github.com/skeeto/hash-prospector/tree/79a6074062a84907df6e45b756134b74e2956760
 static uint32_t HashUInt32(uint32_t Num)
@@ -173,9 +174,9 @@ void CAutoMapper::Load(const char *pTileName)
 				{
 					Value = CPosRule::NOTINDEX;
 					CIndexInfo NewIndexInfo1 = {0, 0, false};
-					//CIndexInfo NewIndexInfo2 = {-1, 0};
+					// CIndexInfo NewIndexInfo2 = {-1, 0};
 					vNewIndexList.push_back(NewIndexInfo1);
-					//vNewIndexList.push_back(NewIndexInfo2);
+					// vNewIndexList.push_back(NewIndexInfo2);
 				}
 				else if(!str_comp(aValue, "INDEX") || !str_comp(aValue, "NOTINDEX"))
 				{
@@ -425,8 +426,10 @@ void CAutoMapper::ProceedLocalized(CLayerTiles *pLayer, int ConfigID, int Seed,
 		{
 			CTile *pIn = &pUpdateLayer->m_pTiles[(y - UpdateFromY) * pUpdateLayer->m_Width + x - UpdateFromX];
 			CTile *pOut = &pLayer->m_pTiles[y * pLayer->m_Width + x];
+			CTile Previous = *pOut;
 			pOut->m_Index = pIn->m_Index;
 			pOut->m_Flags = pIn->m_Flags;
+			pLayer->RecordStateChange(x, y, Previous, *pOut);
 		}
 	}
 
@@ -442,6 +445,7 @@ void CAutoMapper::Proceed(CLayerTiles *pLayer, int ConfigID, int Seed, int SeedO
 		Seed = rand();
 
 	CConfiguration *pConf = &m_vConfigs[ConfigID];
+	pLayer->ClearHistory();
 
 	// for every run: copy tiles, automap, overwrite tiles
 	for(size_t h = 0; h < pConf->m_vRuns.size(); ++h)
@@ -534,8 +538,10 @@ void CAutoMapper::Proceed(CLayerTiles *pLayer, int ConfigID, int Seed, int SeedO
 					if(RespectRules &&
 						(pIndexRule->m_RandomProbability >= 1.0f || HashLocation(Seed, h, i, x + SeedOffsetX, y + SeedOffsetY) < HASH_MAX * pIndexRule->m_RandomProbability))
 					{
+						CTile Previous = *pTile;
 						pTile->m_Index = pIndexRule->m_ID;
 						pTile->m_Flags = pIndexRule->m_Flag;
+						pLayer->RecordStateChange(x, y, Previous, *pTile);
 					}
 				}
 			}

src/game/editor/editor.h

@@ -30,6 +30,8 @@
 #include <engine/shared/jobs.h>
 
 #include "auto_map.h"
+#include "editor_history.h"
+#include "editor_trackers.h"
 #include "map_view.h"
 #include "smooth_value.h"
 
@@ -452,7 +454,7 @@ public:
 	bool Save(const char *pFilename) override;
 	bool Load(const char *pFilename, int StorageType) override;
 	bool HandleMapDrop(const char *pFilename, int StorageType) override;
-	bool Append(const char *pFilename, int StorageType);
+	bool Append(const char *pFilename, int StorageType, bool IgnoreHistory = false);
 	void LoadCurrentMap();
 	void Render();
 
@@ -494,7 +496,10 @@ public:
 	bool IsTangentInSelected() const;
 	bool IsTangentOutSelected() const;
 	bool IsTangentSelected() const;
+	std::pair<int, int> EnvGetSelectedTimeAndValue() const;
 
+	template<typename E>
+	SEditResult<E> DoPropertiesWithState(CUIRect *pToolbox, CProperty *pProps, int *pIDs, int *pNewVal, ColorRGBA Color = ColorRGBA(1, 1, 1, 0.5f));
 	int DoProperties(CUIRect *pToolbox, CProperty *pProps, int *pIDs, int *pNewVal, ColorRGBA Color = ColorRGBA(1, 1, 1, 0.5f));
 
 	CUI::SColorPickerPopupContext m_ColorPickerPopupContext;
@@ -694,10 +699,11 @@ public:
 		EXTRAEDITOR_NONE = -1,
 		EXTRAEDITOR_ENVELOPES,
 		EXTRAEDITOR_SERVER_SETTINGS,
+		EXTRAEDITOR_HISTORY,
 		NUM_EXTRAEDITORS,
 	};
 	EExtraEditor m_ActiveExtraEditor = EXTRAEDITOR_NONE;
-	float m_aExtraEditorSplits[NUM_EXTRAEDITORS] = {250.0f, 250.0f};
+	float m_aExtraEditorSplits[NUM_EXTRAEDITORS] = {250.0f, 250.0f, 250.0f};
 
 	enum EShowEnvelope
 	{
@@ -752,7 +758,7 @@ public:
 
 	CImageInfo m_TileartImageInfo;
 	char m_aTileartFilename[IO_MAX_PATH_LENGTH];
-	void AddTileart();
+	void AddTileart(bool IgnoreHistory = false);
 	void TileartCheckColors();
 
 	void PlaceBorderTiles();
@@ -779,7 +785,7 @@ public:
 
 	void RenderBackground(CUIRect View, IGraphics::CTextureHandle Texture, float Size, float Brightness);
 
-	int UiDoValueSelector(void *pID, CUIRect *pRect, const char *pLabel, int Current, int Min, int Max, int Step, float Scale, const char *pToolTip, bool IsDegree = false, bool IsHex = false, int corners = IGraphics::CORNER_ALL, ColorRGBA *pColor = nullptr, bool ShowValue = true);
+	SEditResult<int> UiDoValueSelector(void *pID, CUIRect *pRect, const char *pLabel, int Current, int Min, int Max, int Step, float Scale, const char *pToolTip, bool IsDegree = false, bool IsHex = false, int corners = IGraphics::CORNER_ALL, ColorRGBA *pColor = nullptr, bool ShowValue = true);
 
 	static CUI::EPopupMenuFunctionResult PopupMenuFile(void *pContext, CUIRect View, bool Active);
 	static CUI::EPopupMenuFunctionResult PopupMenuTools(void *pContext, CUIRect View, bool Active);
@@ -789,6 +795,7 @@ public:
 	{
 		CEditor *m_pEditor;
 		std::vector<std::shared_ptr<CLayerTiles>> m_vpLayers;
+		std::vector<int> m_vLayerIndices;
 		CLayerTiles::SCommonPropState m_CommonPropState;
 	};
 	static CUI::EPopupMenuFunctionResult PopupLayer(void *pContext, CUIRect View, bool Active);
@@ -837,7 +844,7 @@ public:
 
 	void DoQuadEnvelopes(const std::vector<CQuad> &vQuads, IGraphics::CTextureHandle Texture = IGraphics::CTextureHandle());
 	void DoQuadEnvPoint(const CQuad *pQuad, int QIndex, int pIndex);
-	void DoQuadPoint(CQuad *pQuad, int QuadIndex, int v);
+	void DoQuadPoint(const std::shared_ptr<CLayerQuads> &pLayer, CQuad *pQuad, int QuadIndex, int v);
 	void SetHotQuadPoint(const std::shared_ptr<CLayerQuads> &pLayer);
 
 	float TriangleArea(vec2 A, vec2 B, vec2 C);
@@ -849,7 +856,7 @@ public:
 	void DoMapEditor(CUIRect View);
 	void DoToolbarLayers(CUIRect Toolbar);
 	void DoToolbarSounds(CUIRect Toolbar);
-	void DoQuad(CQuad *pQuad, int Index);
+	void DoQuad(const std::shared_ptr<CLayerQuads> &pLayer, CQuad *pQuad, int Index);
 	ColorRGBA GetButtonColor(const void *pID, int Checked);
 
 	bool ReplaceImage(const char *pFilename, int StorageType, bool CheckDuplicate);
@@ -874,6 +881,7 @@ public:
 
 	void RenderEnvelopeEditor(CUIRect View);
 	void RenderServerSettingsEditor(CUIRect View, bool ShowServerSettingsEditorLast);
+	void RenderEditorHistory(CUIRect View);
 
 	void RenderExtraEditorDragBar(CUIRect View, CUIRect DragBar);
 
@@ -883,7 +891,7 @@ public:
 	void RenderFileDialog();
 
 	void SelectGameLayer();
-	void SortImages();
+	std::vector<int> SortImages();
 	bool SelectLayerByTile();
 
 	void DoAudioPreview(CUIRect View, const void *pPlayPauseButtonID, const void *pStopButtonID, const void *pSeekBarID, const int SampleID);
@@ -1002,6 +1010,17 @@ public:
 
 	unsigned char m_SwitchNum;
 	unsigned char m_SwitchDelay;
+
+	// Undo/Redo
+	CEditorHistory m_EditorHistory;
+	CEditorHistory m_ServerSettingsHistory;
+	CEditorHistory m_EnvelopeEditorHistory;
+	CQuadEditTracker m_QuadTracker;
+	CEnvelopeEditorOperationTracker m_EnvOpTracker;
+
+private:
+	void UndoLastAction();
+	void RedoLastAction();
 };
 
 // make sure to inline this function

src/game/editor/editor_action.h

@@ -0,0 +1,30 @@
+#ifndef GAME_EDITOR_EDITOR_ACTION_H
+#define GAME_EDITOR_EDITOR_ACTION_H
+
+#include <string>
+
+class CEditor;
+
+class IEditorAction
+{
+public:
+	IEditorAction(CEditor *pEditor) :
+		m_pEditor(pEditor) {}
+
+	IEditorAction() = default;
+
+	virtual ~IEditorAction() = default;
+
+	virtual void Undo() = 0;
+	virtual void Redo() = 0;
+
+	virtual bool IsEmpty() { return false; }
+
+	const char *DisplayText() const { return m_aDisplayText; }
+
+protected:
+	CEditor *m_pEditor;
+	char m_aDisplayText[256];
+};
+
+#endif

src/game/editor/editor_actions.h

@@ -0,0 +1,648 @@
+#ifndef GAME_EDITOR_EDITOR_ACTIONS_H
+#define GAME_EDITOR_EDITOR_ACTIONS_H
+
+#include "editor.h"
+#include "editor_action.h"
+
+class CEditorActionLayerBase : public IEditorAction
+{
+public:
+	CEditorActionLayerBase(CEditor *pEditor, int GroupIndex, int LayerIndex);
+
+	virtual void Undo() override {}
+	virtual void Redo() override {}
+
+protected:
+	int m_GroupIndex;
+	int m_LayerIndex;
+	std::shared_ptr<CLayer> m_pLayer;
+};
+
+class CEditorBrushDrawAction : public IEditorAction
+{
+public:
+	CEditorBrushDrawAction(CEditor *pEditor, int Group);
+
+	void Undo() override;
+	void Redo() override;
+	bool IsEmpty() override;
+
+private:
+	int m_Group;
+	// m_vTileChanges is a list of changes for each layer that was modified.
+	// The std::pair is used to pair one layer (index) with its history (2D map).
+	// EditorTileStateChangeHistory<T> is a 2D map, storing a change item at a specific y,x position.
+	std::vector<std::pair<int, EditorTileStateChangeHistory<STileStateChange>>> m_vTileChanges;
+	EditorTileStateChangeHistory<STeleTileStateChange> m_TeleTileChanges;
+	EditorTileStateChangeHistory<SSpeedupTileStateChange> m_SpeedupTileChanges;
+	EditorTileStateChangeHistory<SSwitchTileStateChange> m_SwitchTileChanges;
+	EditorTileStateChangeHistory<STuneTileStateChange> m_TuneTileChanges;
+
+	int m_TotalTilesDrawn;
+	int m_TotalLayers;
+
+	void Apply(bool Undo);
+	void SetInfos();
+};
+
+// ---------------------------------------------------------
+
+class CEditorActionQuadPlace : public CEditorActionLayerBase
+{
+public:
+	CEditorActionQuadPlace(CEditor *pEditor, int GroupIndex, int LayerIndex, std::vector<CQuad> &vBrush);
+
+	void Undo() override;
+	void Redo() override;
+
+private:
+	std::vector<CQuad> m_vBrush;
+};
+
+class CEditorActionSoundPlace : public CEditorActionLayerBase
+{
+public:
+	CEditorActionSoundPlace(CEditor *pEditor, int GroupIndex, int LayerIndex, std::vector<CSoundSource> &vBrush);
+
+	void Undo() override;
+	void Redo() override;
+
+private:
+	std::vector<CSoundSource> m_vBrush;
+};
+
+// -------------------------------------------------------------
+
+class CEditorActionDeleteQuad : public CEditorActionLayerBase
+{
+public:
+	CEditorActionDeleteQuad(CEditor *pEditor, int GroupIndex, int LayerIndex, std::vector<int> const &vQuadsIndices, std::vector<CQuad> const &vDeletedQuads);
+
+	void Undo() override;
+	void Redo() override;
+
+private:
+	std::vector<int> m_vQuadsIndices;
+	std::vector<CQuad> m_vDeletedQuads;
+};
+
+// -------------------------------------------------------------
+
+class CEditorActionEditQuadPoint : public CEditorActionLayerBase
+{
+public:
+	CEditorActionEditQuadPoint(CEditor *pEditor, int GroupIndex, int LayerIndex, int QuadIndex, std::vector<CPoint> const &vPreviousPoints, std::vector<CPoint> const &vCurrentPoints);
+
+	void Undo() override;
+	void Redo() override;
+
+private:
+	int m_QuadIndex;
+	std::vector<CPoint> m_vPreviousPoints;
+	std::vector<CPoint> m_vCurrentPoints;
+};
+
+class CEditorActionEditQuadProp : public CEditorActionLayerBase
+{
+public:
+	CEditorActionEditQuadProp(CEditor *pEditor, int GroupIndex, int LayerIndex, int QuadIndex, EQuadProp Prop, int Previous, int Current);
+
+	void Undo() override;
+	void Redo() override;
+
+private:
+	int m_QuadIndex;
+	EQuadProp m_Prop;
+	int m_Previous;
+	int m_Current;
+
+	void Apply(int Value);
+};
+
+class CEditorActionEditQuadPointProp : public CEditorActionLayerBase
+{
+public:
+	CEditorActionEditQuadPointProp(CEditor *pEditor, int GroupIndex, int LayerIndex, int QuadIndex, int PointIndex, EQuadPointProp Prop, int Previous, int Current);
+
+	void Undo() override;
+	void Redo() override;
+
+private:
+	int m_QuadIndex;
+	int m_PointIndex;
+	EQuadPointProp m_Prop;
+	int m_Previous;
+	int m_Current;
+
+	void Apply(int Value);
+};
+
+// -------------------------------------------------------------
+
+class CEditorActionBulk : public IEditorAction
+{
+public:
+	CEditorActionBulk(CEditor *pEditor, const std::vector<std::shared_ptr<IEditorAction>> &vpActions, const char *pDisplay = nullptr, bool Reverse = false);
+
+	void Undo() override;
+	void Redo() override;
+
+private:
+	std::vector<std::shared_ptr<IEditorAction>> m_vpActions;
+	std::string m_Display;
+	bool m_Reverse;
+};
+
+//
+
+class CEditorActionAutoMap : public CEditorActionLayerBase
+{
+public:
+	CEditorActionAutoMap(CEditor *pEditor, int GroupIndex, int LayerIndex, const EditorTileStateChangeHistory<STileStateChange> &Changes);
+
+	void Undo() override;
+	void Redo() override;
+
+private:
+	EditorTileStateChangeHistory<STileStateChange> m_Changes;
+	int m_TotalChanges;
+
+	void ComputeInfos();
+	void Apply(bool Undo);
+};
+
+// -------------------------------------------------------------
+
+class CEditorActionAddLayer : public CEditorActionLayerBase
+{
+public:
+	CEditorActionAddLayer(CEditor *pEditor, int GroupIndex, int LayerIndex, bool Duplicate = false);
+
+	void Undo() override;
+	void Redo() override;
+
+private:
+	bool m_Duplicate;
+};
+
+class CEditorActionDeleteLayer : public CEditorActionLayerBase
+{
+public:
+	CEditorActionDeleteLayer(CEditor *pEditor, int GroupIndex, int LayerIndex);
+
+	void Undo() override;
+	void Redo() override;
+};
+
+class CEditorActionGroup : public IEditorAction
+{
+public:
+	CEditorActionGroup(CEditor *pEditor, int GroupIndex, bool Delete);
+
+	void Undo() override;
+	void Redo() override;
+
+private:
+	int m_GroupIndex;
+	bool m_Delete;
+	std::shared_ptr<CLayerGroup> m_pGroup;
+};
+
+class CEditorActionEditGroupProp : public IEditorAction
+{
+public:
+	CEditorActionEditGroupProp(CEditor *pEditor, int GroupIndex, EGroupProp Prop, int Previous, int Current);
+
+	void Undo() override;
+	void Redo() override;
+
+private:
+	int m_GroupIndex;
+	EGroupProp m_Prop;
+	int m_Previous;
+	int m_Current;
+
+	void Apply(int Value);
+};
+
+template<typename E>
+class CEditorActionEditLayerPropBase : public CEditorActionLayerBase
+{
+public:
+	CEditorActionEditLayerPropBase(CEditor *pEditor, int GroupIndex, int LayerIndex, E Prop, int Previous, int Current);
+
+	virtual void Undo() override {}
+	virtual void Redo() override {}
+
+protected:
+	E m_Prop;
+	int m_Previous;
+	int m_Current;
+};
+
+class CEditorActionEditLayerProp : public CEditorActionEditLayerPropBase<ELayerProp>
+{
+public:
+	CEditorActionEditLayerProp(CEditor *pEditor, int GroupIndex, int LayerIndex, ELayerProp Prop, int Previous, int Current);
+
+	void Undo() override;
+	void Redo() override;
+
+private:
+	void Apply(int Value);
+};
+
+class CEditorActionEditLayerTilesProp : public CEditorActionEditLayerPropBase<ETilesProp>
+{
+public:
+	CEditorActionEditLayerTilesProp(CEditor *pEditor, int GroupIndex, int LayerIndex, ETilesProp Prop, int Previous, int Current);
+
+	void Undo() override;
+	void Redo() override;
+
+	void SetSavedLayers(const std::map<int, std::shared_ptr<CLayer>> &SavedLayers);
+
+private:
+	std::map<int, std::shared_ptr<CLayer>> m_SavedLayers;
+
+	void RestoreLayer(int Layer, const std::shared_ptr<CLayerTiles> &pLayerTiles);
+};
+
+class CEditorActionEditLayerQuadsProp : public CEditorActionEditLayerPropBase<ELayerQuadsProp>
+{
+public:
+	CEditorActionEditLayerQuadsProp(CEditor *pEditor, int GroupIndex, int LayerIndex, ELayerQuadsProp Prop, int Previous, int Current);
+
+	void Undo() override;
+	void Redo() override;
+
+private:
+	void Apply(int Value);
+};
+
+class CEditorActionEditLayersGroupAndOrder : public IEditorAction
+{
+public:
+	CEditorActionEditLayersGroupAndOrder(CEditor *pEditor, int GroupIndex, const std::vector<int> &LayerIndices, int NewGroupIndex, const std::vector<int> &NewLayerIndices);
+
+	void Undo() override;
+	void Redo() override;
+
+private:
+	int m_GroupIndex;
+	std::vector<int> m_LayerIndices;
+	int m_NewGroupIndex;
+	std::vector<int> m_NewLayerIndices;
+};
+
+// --------------
+
+class CEditorActionAppendMap : public IEditorAction
+{
+public:
+	struct SPrevInfo
+	{
+		int m_Groups;
+		int m_Images;
+		int m_Sounds;
+		int m_Envelopes;
+	};
+
+public:
+	CEditorActionAppendMap(CEditor *pEditor, const char *pMapName, const SPrevInfo &PrevInfo, std::vector<int> &vImageIndexMap);
+
+	void Undo() override;
+	void Redo() override;
+
+private:
+	char m_aMapName[IO_MAX_PATH_LENGTH];
+	SPrevInfo m_PrevInfo;
+	std::vector<int> m_vImageIndexMap;
+};
+
+// --------------
+
+class CEditorActionTileArt : public IEditorAction
+{
+public:
+	CEditorActionTileArt(CEditor *pEditor, int PreviousImageCount, const char *pTileArtFile, std::vector<int> &vImageIndexMap);
+
+	void Undo() override;
+	void Redo() override;
+
+private:
+	int m_PreviousImageCount;
+	char m_aTileArtFile[IO_MAX_PATH_LENGTH];
+	std::vector<int> m_vImageIndexMap;
+};
+
+// ----------------------
+
+class CEditorCommandAction : public IEditorAction
+{
+public:
+	enum class EType
+	{
+		DELETE,
+		ADD,
+		EDIT,
+		MOVE_UP,
+		MOVE_DOWN
+	};
+
+	CEditorCommandAction(CEditor *pEditor, EType Type, int *pSelectedCommandIndex, int CommandIndex, const char *pPreviousCommand = nullptr, const char *pCurrentCommand = nullptr);
+
+	void Undo() override;
+	void Redo() override;
+
+private:
+	EType m_Type;
+	int *m_pSelectedCommandIndex;
+	int m_CommandIndex;
+	std::string m_PreviousCommand;
+	std::string m_CurrentCommand;
+};
+
+// ------------------------------
+
+class CEditorActionEnvelopeAdd : public IEditorAction
+{
+public:
+	CEditorActionEnvelopeAdd(CEditor *pEditor, const std::shared_ptr<CEnvelope> &pEnv);
+
+	void Undo() override;
+	void Redo() override;
+
+private:
+	std::shared_ptr<CEnvelope> m_pEnv;
+};
+
+class CEditorActionEveloppeDelete : public IEditorAction
+{
+public:
+	CEditorActionEveloppeDelete(CEditor *pEditor, int EnvelopeIndex);
+
+	void Undo() override;
+	void Redo() override;
+
+private:
+	int m_EnvelopeIndex;
+	std::shared_ptr<CEnvelope> m_pEnv;
+};
+
+class CEditorActionEnvelopeEdit : public IEditorAction
+{
+public:
+	enum class EEditType
+	{
+		SYNC,
+		ORDER
+	};
+
+	CEditorActionEnvelopeEdit(CEditor *pEditor, int EnvelopeIndex, EEditType EditType, int Previous, int Current);
+
+	void Undo() override;
+	void Redo() override;
+
+private:
+	int m_EnvelopeIndex;
+	EEditType m_EditType;
+	int m_Previous;
+	int m_Current;
+	std::shared_ptr<CEnvelope> m_pEnv;
+};
+
+class CEditorActionEnvelopeEditPoint : public IEditorAction
+{
+public:
+	enum class EEditType
+	{
+		TIME,
+		VALUE,
+		CURVE_TYPE,
+		HANDLE
+	};
+
+	CEditorActionEnvelopeEditPoint(CEditor *pEditor, int EnvelopeIndex, int PointIndex, int Channel, EEditType EditType, int Previous, int Current);
+
+	void Undo() override;
+	void Redo() override;
+
+private:
+	int m_EnvelopeIndex;
+	int m_PointIndex;
+	int m_Channel;
+	EEditType m_EditType;
+	int m_Previous;
+	int m_Current;
+	std::shared_ptr<CEnvelope> m_pEnv;
+
+	void Apply(int Value);
+};
+
+class CEditorActionAddEnvelopePoint : public IEditorAction
+{
+public:
+	CEditorActionAddEnvelopePoint(CEditor *pEditor, int EnvIndex, int Time, ColorRGBA Channels);
+
+	void Undo() override;
+	void Redo() override;
+
+private:
+	int m_EnvIndex;
+	int m_Time;
+	ColorRGBA m_Channels;
+};
+
+class CEditorActionDeleteEnvelopePoint : public IEditorAction
+{
+public:
+	CEditorActionDeleteEnvelopePoint(CEditor *pEditor, int EnvIndex, int PointIndex);
+
+	void Undo() override;
+	void Redo() override;
+
+private:
+	int m_EnvIndex;
+	int m_PointIndex;
+	CEnvPoint_runtime m_Point;
+};
+
+class CEditorActionEditEnvelopePointValue : public IEditorAction
+{
+public:
+	enum class EType
+	{
+		TANGENT_IN,
+		TANGENT_OUT,
+		POINT
+	};
+
+	CEditorActionEditEnvelopePointValue(CEditor *pEditor, int EnvIndex, int PointIndex, int Channel, EType Type, int OldTime, int OldValue, int NewTime, int NewValue);
+
+	void Undo() override;
+	void Redo() override;
+
+private:
+	int m_EnvIndex;
+	int m_PtIndex;
+	int m_Channel;
+	EType m_Type;
+	int m_OldTime;
+	int m_OldValue;
+	int m_NewTime;
+	int m_NewValue;
+
+	void Apply(bool Undo);
+};
+
+class CEditorActionResetEnvelopePointTangent : public IEditorAction
+{
+public:
+	CEditorActionResetEnvelopePointTangent(CEditor *pEditor, int EnvIndex, int PointIndex, int Channel, bool In);
+
+	void Undo() override;
+	void Redo() override;
+
+private:
+	int m_EnvIndex;
+	int m_PointIndex;
+	int m_Channel;
+	bool m_In;
+	int m_Previous[2];
+};
+
+class CEditorActionEditLayerSoundsProp : public CEditorActionEditLayerPropBase<ELayerSoundsProp>
+{
+public:
+	CEditorActionEditLayerSoundsProp(CEditor *pEditor, int GroupIndex, int LayerIndex, ELayerSoundsProp Prop, int Previous, int Current);
+
+	void Undo() override;
+	void Redo() override;
+
+private:
+	void Apply(int Value);
+};
+
+class CEditorActionDeleteSoundSource : public CEditorActionLayerBase
+{
+public:
+	CEditorActionDeleteSoundSource(CEditor *pEditor, int GroupIndex, int LayerIndex, int SourceIndex);
+
+	void Undo() override;
+	void Redo() override;
+
+private:
+	int m_SourceIndex;
+	CSoundSource m_Source;
+};
+
+class CEditorActionEditSoundSource : public CEditorActionLayerBase
+{
+public:
+	enum class EEditType
+	{
+		SHAPE
+	};
+
+	CEditorActionEditSoundSource(CEditor *pEditor, int GroupIndex, int LayerIndex, int SourceIndex, EEditType Type, int Value);
+	~CEditorActionEditSoundSource() override;
+
+	void Undo() override;
+	void Redo() override;
+
+private:
+	int m_SourceIndex;
+	EEditType m_EditType;
+	int m_CurrentValue;
+
+	std::vector<int> m_vOriginalValues;
+	void *m_pSavedObject;
+
+	void Save();
+};
+
+class CEditorActionEditSoundSourceProp : public CEditorActionEditLayerPropBase<ESoundProp>
+{
+public:
+	CEditorActionEditSoundSourceProp(CEditor *pEditor, int GroupIndex, int LayerIndex, int SourceIndex, ESoundProp Prop, int Previous, int Current);
+
+	void Undo() override;
+	void Redo() override;
+
+private:
+	int m_SourceIndex;
+
+private:
+	void Apply(int Value);
+};
+
+class CEditorActionEditRectSoundSourceShapeProp : public CEditorActionEditLayerPropBase<ERectangleShapeProp>
+{
+public:
+	CEditorActionEditRectSoundSourceShapeProp(CEditor *pEditor, int GroupIndex, int LayerIndex, int SourceIndex, ERectangleShapeProp Prop, int Previous, int Current);
+
+	void Undo() override;
+	void Redo() override;
+
+private:
+	int m_SourceIndex;
+
+private:
+	void Apply(int Value);
+};
+
+class CEditorActionEditCircleSoundSourceShapeProp : public CEditorActionEditLayerPropBase<ECircleShapeProp>
+{
+public:
+	CEditorActionEditCircleSoundSourceShapeProp(CEditor *pEditor, int GroupIndex, int LayerIndex, int SourceIndex, ECircleShapeProp Prop, int Previous, int Current);
+
+	void Undo() override;
+	void Redo() override;
+
+private:
+	int m_SourceIndex;
+
+private:
+	void Apply(int Value);
+};
+
+class CEditorActionNewEmptySound : public CEditorActionLayerBase
+{
+public:
+	CEditorActionNewEmptySound(CEditor *pEditor, int GroupIndex, int LayerIndex, int x, int y);
+
+	void Undo() override;
+	void Redo() override;
+
+private:
+	int m_X;
+	int m_Y;
+};
+
+class CEditorActionNewEmptyQuad : public CEditorActionLayerBase
+{
+public:
+	CEditorActionNewEmptyQuad(CEditor *pEditor, int GroupIndex, int LayerIndex, int x, int y);
+
+	void Undo() override;
+	void Redo() override;
+
+private:
+	int m_X;
+	int m_Y;
+};
+
+class CEditorActionNewQuad : public CEditorActionLayerBase
+{
+public:
+	CEditorActionNewQuad(CEditor *pEditor, int GroupIndex, int LayerIndex);
+
+	void Undo() override;
+	void Redo() override;
+
+private:
+	CQuad m_Quad;
+};
+
+#endif

src/game/editor/editor_history.cpp

@@ -0,0 +1,65 @@
+#include <engine/shared/config.h>
+
+#include "editor.h"
+#include "editor_actions.h"
+#include "editor_history.h"
+
+void CEditorHistory::RecordAction(const std::shared_ptr<IEditorAction> &pAction)
+{
+	RecordAction(pAction, nullptr);
+}
+
+void CEditorHistory::Execute(const std::shared_ptr<IEditorAction> &pAction, const char *pDisplay)
+{
+	pAction->Redo();
+	RecordAction(pAction, pDisplay);
+}
+
+void CEditorHistory::RecordAction(const std::shared_ptr<IEditorAction> &pAction, const char *pDisplay)
+{
+	m_vpRedoActions.clear();
+
+	if((int)m_vpUndoActions.size() >= g_Config.m_ClEditorMaxHistory)
+	{
+		m_vpUndoActions.pop_front();
+	}
+
+	if(pDisplay == nullptr)
+		m_vpUndoActions.emplace_back(pAction);
+	else
+		m_vpUndoActions.emplace_back(std::make_shared<CEditorActionBulk>(m_pEditor, std::vector<std::shared_ptr<IEditorAction>>{pAction}, pDisplay));
+}
+
+bool CEditorHistory::Undo()
+{
+	if(m_vpUndoActions.empty())
+		return false;
+
+	auto pLastAction = m_vpUndoActions.back();
+	m_vpUndoActions.pop_back();
+
+	pLastAction->Undo();
+
+	m_vpRedoActions.emplace_back(pLastAction);
+	return true;
+}
+
+bool CEditorHistory::Redo()
+{
+	if(m_vpRedoActions.empty())
+		return false;
+
+	auto pLastAction = m_vpRedoActions.back();
+	m_vpRedoActions.pop_back();
+
+	pLastAction->Redo();
+
+	m_vpUndoActions.emplace_back(pLastAction);
+	return true;
+}
+
+void CEditorHistory::Clear()
+{
+	m_vpUndoActions.clear();
+	m_vpRedoActions.clear();
+}

src/game/editor/editor_history.h

@@ -0,0 +1,37 @@
+#ifndef GAME_EDITOR_EDITOR_HISTORY_H
+#define GAME_EDITOR_EDITOR_HISTORY_H
+
+#include "editor_action.h"
+
+#include <queue>
+
+class CEditorHistory
+{
+public:
+	CEditorHistory()
+	{
+		m_pEditor = nullptr;
+	}
+
+	~CEditorHistory()
+	{
+		Clear();
+	}
+
+	void RecordAction(const std::shared_ptr<IEditorAction> &pAction);
+	void RecordAction(const std::shared_ptr<IEditorAction> &pAction, const char *pDisplay);
+	void Execute(const std::shared_ptr<IEditorAction> &pAction, const char *pDisplay = nullptr);
+
+	bool Undo();
+	bool Redo();
+
+	void Clear();
+	bool CanUndo() const { return !m_vpUndoActions.empty(); }
+	bool CanRedo() const { return !m_vpRedoActions.empty(); }
+
+	CEditor *m_pEditor;
+	std::deque<std::shared_ptr<IEditorAction>> m_vpUndoActions;
+	std::deque<std::shared_ptr<IEditorAction>> m_vpRedoActions;
+};
+
+#endif

src/game/editor/editor_props.cpp

@@ -0,0 +1,282 @@
+#include "editor.h"
+
+#include <game/editor/mapitems/image.h>
+#include <game/editor/mapitems/sound.h>
+
+int CEditor::DoProperties(CUIRect *pToolbox, CProperty *pProps, int *pIDs, int *pNewVal, ColorRGBA Color)
+{
+	auto Res = DoPropertiesWithState<int>(pToolbox, pProps, pIDs, pNewVal, Color);
+	return Res.m_Value;
+}
+
+template<typename E>
+SEditResult<E> CEditor::DoPropertiesWithState(CUIRect *pToolBox, CProperty *pProps, int *pIDs, int *pNewVal, ColorRGBA Color)
+{
+	int Change = -1;
+	EEditState State = EEditState::EDITING;
+
+	for(int i = 0; pProps[i].m_pName; i++)
+	{
+		CUIRect Slot;
+		pToolBox->HSplitTop(13.0f, &Slot, pToolBox);
+		CUIRect Label, Shifter;
+		Slot.VSplitMid(&Label, &Shifter);
+		Shifter.HMargin(1.0f, &Shifter);
+		UI()->DoLabel(&Label, pProps[i].m_pName, 10.0f, TEXTALIGN_ML);
+
+		if(pProps[i].m_Type == PROPTYPE_INT_STEP)
+		{
+			CUIRect Inc, Dec;
+			char aBuf[64];
+
+			Shifter.VSplitRight(10.0f, &Shifter, &Inc);
+			Shifter.VSplitLeft(10.0f, &Dec, &Shifter);
+			str_from_int(pProps[i].m_Value, aBuf);
+			auto NewValueRes = UiDoValueSelector((char *)&pIDs[i], &Shifter, "", pProps[i].m_Value, pProps[i].m_Min, pProps[i].m_Max, 1, 1.0f, "Use left mouse button to drag and change the value. Hold shift to be more precise. Rightclick to edit as text.", false, false, 0, &Color);
+			int NewValue = NewValueRes.m_Value;
+			if(NewValue != pProps[i].m_Value || NewValueRes.m_State != EEditState::EDITING)
+			{
+				*pNewVal = NewValue;
+				Change = i;
+				State = NewValueRes.m_State;
+			}
+			if(DoButton_ButtonDec((char *)&pIDs[i] + 1, nullptr, 0, &Dec, 0, "Decrease"))
+			{
+				*pNewVal = pProps[i].m_Value - 1;
+				Change = i;
+				State = EEditState::ONE_GO;
+			}
+			if(DoButton_ButtonInc(((char *)&pIDs[i]) + 2, nullptr, 0, &Inc, 0, "Increase"))
+			{
+				*pNewVal = pProps[i].m_Value + 1;
+				Change = i;
+				State = EEditState::ONE_GO;
+			}
+		}
+		else if(pProps[i].m_Type == PROPTYPE_BOOL)
+		{
+			CUIRect No, Yes;
+			Shifter.VSplitMid(&No, &Yes);
+			if(DoButton_ButtonDec(&pIDs[i], "No", !pProps[i].m_Value, &No, 0, ""))
+			{
+				*pNewVal = 0;
+				Change = i;
+				State = EEditState::ONE_GO;
+			}
+			if(DoButton_ButtonInc(((char *)&pIDs[i]) + 1, "Yes", pProps[i].m_Value, &Yes, 0, ""))
+			{
+				*pNewVal = 1;
+				Change = i;
+				State = EEditState::ONE_GO;
+			}
+		}
+		else if(pProps[i].m_Type == PROPTYPE_INT_SCROLL)
+		{
+			auto NewValueRes = UiDoValueSelector(&pIDs[i], &Shifter, "", pProps[i].m_Value, pProps[i].m_Min, pProps[i].m_Max, 1, 1.0f, "Use left mouse button to drag and change the value. Hold shift to be more precise. Rightclick to edit as text.");
+			int NewValue = NewValueRes.m_Value;
+			if(NewValue != pProps[i].m_Value || NewValueRes.m_State != EEditState::EDITING)
+			{
+				*pNewVal = NewValue;
+				Change = i;
+				State = NewValueRes.m_State;
+			}
+		}
+		else if(pProps[i].m_Type == PROPTYPE_ANGLE_SCROLL)
+		{
+			CUIRect Inc, Dec;
+			Shifter.VSplitRight(10.0f, &Shifter, &Inc);
+			Shifter.VSplitLeft(10.0f, &Dec, &Shifter);
+			const bool Shift = Input()->ShiftIsPressed();
+			int Step = Shift ? 1 : 45;
+			int Value = pProps[i].m_Value;
+
+			auto NewValueRes = UiDoValueSelector(&pIDs[i], &Shifter, "", Value, pProps[i].m_Min, pProps[i].m_Max, Shift ? 1 : 45, Shift ? 1.0f : 10.0f, "Use left mouse button to drag and change the value. Hold shift to be more precise. Rightclick to edit as text.", false, false, 0);
+			int NewValue = NewValueRes.m_Value;
+			if(DoButton_ButtonDec(&pIDs[i] + 1, nullptr, 0, &Dec, 0, "Decrease"))
+			{
+				NewValue = (std::ceil((pProps[i].m_Value / (float)Step)) - 1) * Step;
+				if(NewValue < 0)
+					NewValue += 360;
+				State = EEditState::ONE_GO;
+			}
+			if(DoButton_ButtonInc(&pIDs[i] + 2, nullptr, 0, &Inc, 0, "Increase"))
+			{
+				NewValue = (pProps[i].m_Value + Step) / Step * Step;
+				State = EEditState::ONE_GO;
+			}
+
+			if(NewValue != pProps[i].m_Value || NewValueRes.m_State != EEditState::EDITING)
+			{
+				*pNewVal = NewValue % 360;
+				Change = i;
+				State = NewValueRes.m_State;
+			}
+		}
+		else if(pProps[i].m_Type == PROPTYPE_COLOR)
+		{
+			const auto &&SetColor = [&](ColorRGBA NewColor) {
+				const int NewValue = NewColor.PackAlphaLast();
+				if(NewValue != pProps[i].m_Value || m_ColorPickerPopupContext.m_State != EEditState::EDITING)
+				{
+					*pNewVal = NewValue;
+					Change = i;
+					State = m_ColorPickerPopupContext.m_State;
+				}
+			};
+			DoColorPickerButton(&pIDs[i], &Shifter, ColorRGBA::UnpackAlphaLast<ColorRGBA>(pProps[i].m_Value), SetColor);
+		}
+		else if(pProps[i].m_Type == PROPTYPE_IMAGE)
+		{
+			const char *pName;
+			if(pProps[i].m_Value < 0)
+				pName = "None";
+			else
+				pName = m_Map.m_vpImages[pProps[i].m_Value]->m_aName;
+
+			if(DoButton_Ex(&pIDs[i], pName, 0, &Shifter, 0, nullptr, IGraphics::CORNER_ALL))
+				PopupSelectImageInvoke(pProps[i].m_Value, UI()->MouseX(), UI()->MouseY());
+
+			int r = PopupSelectImageResult();
+			if(r >= -1)
+			{
+				*pNewVal = r;
+				Change = i;
+				State = EEditState::ONE_GO;
+			}
+		}
+		else if(pProps[i].m_Type == PROPTYPE_SHIFT)
+		{
+			CUIRect Left, Right, Up, Down;
+			Shifter.VSplitMid(&Left, &Up, 2.0f);
+			Left.VSplitLeft(10.0f, &Left, &Shifter);
+			Shifter.VSplitRight(10.0f, &Shifter, &Right);
+			Shifter.Draw(ColorRGBA(1, 1, 1, 0.5f), 0, 0.0f);
+			UI()->DoLabel(&Shifter, "X", 10.0f, TEXTALIGN_MC);
+			Up.VSplitLeft(10.0f, &Up, &Shifter);
+			Shifter.VSplitRight(10.0f, &Shifter, &Down);
+			Shifter.Draw(ColorRGBA(1, 1, 1, 0.5f), 0, 0.0f);
+			UI()->DoLabel(&Shifter, "Y", 10.0f, TEXTALIGN_MC);
+			if(DoButton_ButtonDec(&pIDs[i], "-", 0, &Left, 0, "Left"))
+			{
+				*pNewVal = DIRECTION_LEFT;
+				Change = i;
+				State = EEditState::ONE_GO;
+			}
+			if(DoButton_ButtonInc(((char *)&pIDs[i]) + 3, "+", 0, &Right, 0, "Right"))
+			{
+				*pNewVal = DIRECTION_RIGHT;
+				Change = i;
+				State = EEditState::ONE_GO;
+			}
+			if(DoButton_ButtonDec(((char *)&pIDs[i]) + 1, "-", 0, &Up, 0, "Up"))
+			{
+				*pNewVal = DIRECTION_UP;
+				Change = i;
+				State = EEditState::ONE_GO;
+			}
+			if(DoButton_ButtonInc(((char *)&pIDs[i]) + 2, "+", 0, &Down, 0, "Down"))
+			{
+				*pNewVal = DIRECTION_DOWN;
+				Change = i;
+				State = EEditState::ONE_GO;
+			}
+		}
+		else if(pProps[i].m_Type == PROPTYPE_SOUND)
+		{
+			const char *pName;
+			if(pProps[i].m_Value < 0)
+				pName = "None";
+			else
+				pName = m_Map.m_vpSounds[pProps[i].m_Value]->m_aName;
+
+			if(DoButton_Ex(&pIDs[i], pName, 0, &Shifter, 0, nullptr, IGraphics::CORNER_ALL))
+				PopupSelectSoundInvoke(pProps[i].m_Value, UI()->MouseX(), UI()->MouseY());
+
+			int r = PopupSelectSoundResult();
+			if(r >= -1)
+			{
+				*pNewVal = r;
+				Change = i;
+				State = EEditState::ONE_GO;
+			}
+		}
+		else if(pProps[i].m_Type == PROPTYPE_AUTOMAPPER)
+		{
+			const char *pName;
+			if(pProps[i].m_Value < 0 || pProps[i].m_Min < 0 || pProps[i].m_Min >= (int)m_Map.m_vpImages.size())
+				pName = "None";
+			else
+				pName = m_Map.m_vpImages[pProps[i].m_Min]->m_AutoMapper.GetConfigName(pProps[i].m_Value);
+
+			if(DoButton_Ex(&pIDs[i], pName, 0, &Shifter, 0, nullptr, IGraphics::CORNER_ALL))
+				PopupSelectConfigAutoMapInvoke(pProps[i].m_Value, UI()->MouseX(), UI()->MouseY());
+
+			int r = PopupSelectConfigAutoMapResult();
+			if(r >= -1)
+			{
+				*pNewVal = r;
+				Change = i;
+				State = EEditState::ONE_GO;
+			}
+		}
+		else if(pProps[i].m_Type == PROPTYPE_ENVELOPE)
+		{
+			CUIRect Inc, Dec;
+			char aBuf[8];
+			int CurValue = pProps[i].m_Value;
+
+			Shifter.VSplitRight(10.0f, &Shifter, &Inc);
+			Shifter.VSplitLeft(10.0f, &Dec, &Shifter);
+
+			if(CurValue <= 0)
+				str_copy(aBuf, "None:");
+			else if(m_Map.m_vpEnvelopes[CurValue - 1]->m_aName[0])
+			{
+				str_format(aBuf, sizeof(aBuf), "%s:", m_Map.m_vpEnvelopes[CurValue - 1]->m_aName);
+				if(!str_endswith(aBuf, ":"))
+				{
+					aBuf[sizeof(aBuf) - 2] = ':';
+					aBuf[sizeof(aBuf) - 1] = '\0';
+				}
+			}
+			else
+				aBuf[0] = '\0';
+
+			auto NewValueRes = UiDoValueSelector((char *)&pIDs[i], &Shifter, aBuf, CurValue, 0, m_Map.m_vpEnvelopes.size(), 1, 1.0f, "Set Envelope", false, false, IGraphics::CORNER_NONE);
+			int NewVal = NewValueRes.m_Value;
+			if(NewVal != CurValue || NewValueRes.m_State != EEditState::EDITING)
+			{
+				*pNewVal = NewVal;
+				Change = i;
+				State = NewValueRes.m_State;
+			}
+
+			if(DoButton_ButtonDec((char *)&pIDs[i] + 1, nullptr, 0, &Dec, 0, "Previous Envelope"))
+			{
+				*pNewVal = pProps[i].m_Value - 1;
+				Change = i;
+				State = EEditState::ONE_GO;
+			}
+			if(DoButton_ButtonInc(((char *)&pIDs[i]) + 2, nullptr, 0, &Inc, 0, "Next Envelope"))
+			{
+				*pNewVal = pProps[i].m_Value + 1;
+				Change = i;
+				State = EEditState::ONE_GO;
+			}
+		}
+	}
+
+	return SEditResult<E>{State, static_cast<E>(Change)};
+}
+
+template SEditResult<ECircleShapeProp> CEditor::DoPropertiesWithState(CUIRect *, CProperty *, int *, int *, ColorRGBA);
+template SEditResult<ERectangleShapeProp> CEditor::DoPropertiesWithState(CUIRect *, CProperty *, int *, int *, ColorRGBA);
+template SEditResult<EGroupProp> CEditor::DoPropertiesWithState(CUIRect *, CProperty *, int *, int *, ColorRGBA);
+template SEditResult<ELayerProp> CEditor::DoPropertiesWithState(CUIRect *, CProperty *, int *, int *, ColorRGBA);
+template SEditResult<ELayerQuadsProp> CEditor::DoPropertiesWithState(CUIRect *, CProperty *, int *, int *, ColorRGBA);
+template SEditResult<ETilesProp> CEditor::DoPropertiesWithState(CUIRect *, CProperty *, int *, int *, ColorRGBA);
+template SEditResult<ETilesCommonProp> CEditor::DoPropertiesWithState(CUIRect *, CProperty *, int *, int *, ColorRGBA);
+template SEditResult<ELayerSoundsProp> CEditor::DoPropertiesWithState(CUIRect *, CProperty *, int *, int *, ColorRGBA);
+template SEditResult<EQuadProp> CEditor::DoPropertiesWithState(CUIRect *, CProperty *, int *, int *, ColorRGBA);
+template SEditResult<EQuadPointProp> CEditor::DoPropertiesWithState(CUIRect *, CProperty *, int *, int *, ColorRGBA);
+template SEditResult<ESoundProp> CEditor::DoPropertiesWithState(CUIRect *, CProperty *, int *, int *, ColorRGBA);

src/game/editor/editor_trackers.cpp

@@ -0,0 +1,632 @@
+#include "editor_trackers.h"
+
+#include <game/editor/mapitems/layer_group.h>
+#include <game/editor/mapitems/layer_tiles.h>
+
+#include "editor.h"
+#include "editor_actions.h"
+
+CQuadEditTracker::CQuadEditTracker() :
+	m_pEditor(nullptr), m_TrackedProp(EQuadProp::PROP_NONE) {}
+
+CQuadEditTracker::~CQuadEditTracker()
+{
+	m_InitalPoints.clear();
+	m_vSelectedQuads.clear();
+}
+
+void CQuadEditTracker::BeginQuadTrack(const std::shared_ptr<CLayerQuads> &pLayer, const std::vector<int> &vSelectedQuads)
+{
+	if(m_Tracking)
+		return;
+	m_Tracking = true;
+	m_vSelectedQuads.clear();
+	m_pLayer = pLayer;
+	// Init all points
+	for(auto QuadIndex : vSelectedQuads)
+	{
+		auto &pQuad = pLayer->m_vQuads[QuadIndex];
+		m_InitalPoints[QuadIndex] = std::vector<CPoint>(pQuad.m_aPoints, pQuad.m_aPoints + 5);
+		m_vSelectedQuads.push_back(QuadIndex);
+	}
+}
+
+void CQuadEditTracker::EndQuadTrack()
+{
+	if(!m_Tracking)
+		return;
+	m_Tracking = false;
+
+	int GroupIndex = m_pEditor->m_SelectedGroup;
+	int LayerIndex = m_pEditor->m_vSelectedLayers[0];
+
+	// Record all moved stuff
+	std::vector<std::shared_ptr<IEditorAction>> vpActions;
+	for(auto QuadIndex : m_vSelectedQuads)
+	{
+		auto &pQuad = m_pLayer->m_vQuads[QuadIndex];
+		auto vCurrentPoints = std::vector<CPoint>(pQuad.m_aPoints, pQuad.m_aPoints + 5);
+		vpActions.push_back(std::make_shared<CEditorActionEditQuadPoint>(m_pEditor, GroupIndex, LayerIndex, QuadIndex, m_InitalPoints[QuadIndex], vCurrentPoints));
+	}
+	m_pEditor->m_EditorHistory.RecordAction(std::make_shared<CEditorActionBulk>(m_pEditor, vpActions));
+}
+
+void CQuadEditTracker::BeginQuadPropTrack(const std::shared_ptr<CLayerQuads> &pLayer, const std::vector<int> &vSelectedQuads, EQuadProp Prop)
+{
+	if(m_TrackedProp != EQuadProp::PROP_NONE)
+		return;
+	m_TrackedProp = Prop;
+	m_pLayer = pLayer;
+	m_vSelectedQuads = vSelectedQuads;
+	m_PreviousValues.clear();
+
+	for(auto QuadIndex : vSelectedQuads)
+	{
+		auto &Quad = pLayer->m_vQuads[QuadIndex];
+		if(Prop == EQuadProp::PROP_POS_X || Prop == EQuadProp::PROP_POS_Y)
+			m_InitalPoints[QuadIndex] = std::vector<CPoint>(Quad.m_aPoints, Quad.m_aPoints + 5);
+		else if(Prop == EQuadProp::PROP_POS_ENV)
+			m_PreviousValues[QuadIndex] = Quad.m_PosEnv;
+		else if(Prop == EQuadProp::PROP_POS_ENV_OFFSET)
+			m_PreviousValues[QuadIndex] = Quad.m_PosEnvOffset;
+		else if(Prop == EQuadProp::PROP_COLOR_ENV)
+			m_PreviousValues[QuadIndex] = Quad.m_ColorEnv;
+		else if(Prop == EQuadProp::PROP_COLOR_ENV_OFFSET)
+			m_PreviousValues[QuadIndex] = Quad.m_ColorEnvOffset;
+	}
+}
+void CQuadEditTracker::EndQuadPropTrack(EQuadProp Prop)
+{
+	if(m_TrackedProp != Prop)
+		return;
+	m_TrackedProp = EQuadProp::PROP_NONE;
+
+	std::vector<std::shared_ptr<IEditorAction>> vpActions;
+
+	int GroupIndex = m_pEditor->m_SelectedGroup;
+	int LayerIndex = m_pEditor->m_vSelectedLayers[0];
+
+	for(auto QuadIndex : m_vSelectedQuads)
+	{
+		auto &Quad = m_pLayer->m_vQuads[QuadIndex];
+		if(Prop == EQuadProp::PROP_POS_X || Prop == EQuadProp::PROP_POS_Y)
+		{
+			auto vCurrentPoints = std::vector<CPoint>(Quad.m_aPoints, Quad.m_aPoints + 5);
+			vpActions.push_back(std::make_shared<CEditorActionEditQuadPoint>(m_pEditor, GroupIndex, LayerIndex, QuadIndex, m_InitalPoints[QuadIndex], vCurrentPoints));
+		}
+		else
+		{
+			int Value = 0;
+			if(Prop == EQuadProp::PROP_POS_ENV)
+				Value = Quad.m_PosEnv;
+			else if(Prop == EQuadProp::PROP_POS_ENV_OFFSET)
+				Value = Quad.m_PosEnvOffset;
+			else if(Prop == EQuadProp::PROP_COLOR_ENV)
+				Value = Quad.m_ColorEnv;
+			else if(Prop == EQuadProp::PROP_COLOR_ENV_OFFSET)
+				Value = Quad.m_ColorEnvOffset;
+
+			if(Value != m_PreviousValues[QuadIndex])
+				vpActions.push_back(std::make_shared<CEditorActionEditQuadProp>(m_pEditor, GroupIndex, LayerIndex, QuadIndex, Prop, m_PreviousValues[QuadIndex], Value));
+		}
+	}
+
+	if(!vpActions.empty())
+		m_pEditor->m_EditorHistory.RecordAction(std::make_shared<CEditorActionBulk>(m_pEditor, vpActions));
+}
+
+void CQuadEditTracker::BeginQuadPointPropTrack(const std::shared_ptr<CLayerQuads> &pLayer, const std::vector<int> &vSelectedQuads, int SelectedQuadPoints)
+{
+	if(!m_vTrackedProps.empty())
+		return;
+
+	m_pLayer = pLayer;
+	m_SelectedQuadPoints = SelectedQuadPoints;
+	m_vSelectedQuads = vSelectedQuads;
+	m_PreviousValuesPoint.clear();
+
+	for(auto QuadIndex : vSelectedQuads)
+	{
+		m_PreviousValuesPoint[QuadIndex] = std::vector<std::map<EQuadPointProp, int>>(4);
+	}
+}
+
+void CQuadEditTracker::AddQuadPointPropTrack(EQuadPointProp Prop)
+{
+	if(std::find(m_vTrackedProps.begin(), m_vTrackedProps.end(), Prop) != m_vTrackedProps.end())
+		return;
+
+	m_vTrackedProps.push_back(Prop);
+
+	for(auto QuadIndex : m_vSelectedQuads)
+	{
+		auto &Quad = m_pLayer->m_vQuads[QuadIndex];
+		if(Prop == EQuadPointProp::PROP_POS_X || Prop == EQuadPointProp::PROP_POS_Y)
+			m_InitalPoints[QuadIndex] = std::vector<CPoint>(Quad.m_aPoints, Quad.m_aPoints + 5);
+		else if(Prop == EQuadPointProp::PROP_COLOR)
+		{
+			for(int v = 0; v < 4; v++)
+			{
+				if(m_SelectedQuadPoints & (1 << v))
+				{
+					int Color = PackColor(Quad.m_aColors[v]);
+					m_PreviousValuesPoint[QuadIndex][v][Prop] = Color;
+				}
+			}
+		}
+		else if(Prop == EQuadPointProp::PROP_TEX_U)
+		{
+			for(int v = 0; v < 4; v++)
+			{
+				if(m_SelectedQuadPoints & (1 << v))
+				{
+					m_PreviousValuesPoint[QuadIndex][v][Prop] = Quad.m_aTexcoords[v].x;
+				}
+			}
+		}
+		else if(Prop == EQuadPointProp::PROP_TEX_V)
+		{
+			for(int v = 0; v < 4; v++)
+			{
+				if(m_SelectedQuadPoints & (1 << v))
+				{
+					m_PreviousValuesPoint[QuadIndex][v][Prop] = Quad.m_aTexcoords[v].y;
+				}
+			}
+		}
+	}
+}
+
+void CQuadEditTracker::EndQuadPointPropTrack(EQuadPointProp Prop)
+{
+	auto It = std::find(m_vTrackedProps.begin(), m_vTrackedProps.end(), Prop);
+	if(It == m_vTrackedProps.end())
+		return;
+
+	m_vTrackedProps.erase(It);
+
+	std::vector<std::shared_ptr<IEditorAction>> vpActions;
+
+	int GroupIndex = m_pEditor->m_SelectedGroup;
+	int LayerIndex = m_pEditor->m_vSelectedLayers[0];
+
+	for(auto QuadIndex : m_vSelectedQuads)
+	{
+		auto &Quad = m_pLayer->m_vQuads[QuadIndex];
+		if(Prop == EQuadPointProp::PROP_POS_X || Prop == EQuadPointProp::PROP_POS_Y)
+		{
+			auto vCurrentPoints = std::vector<CPoint>(Quad.m_aPoints, Quad.m_aPoints + 5);
+			vpActions.push_back(std::make_shared<CEditorActionEditQuadPoint>(m_pEditor, GroupIndex, LayerIndex, QuadIndex, m_InitalPoints[QuadIndex], vCurrentPoints));
+		}
+		else
+		{
+			int Value = 0;
+			for(int v = 0; v < 4; v++)
+			{
+				if(m_SelectedQuadPoints & (1 << v))
+				{
+					if(Prop == EQuadPointProp::PROP_COLOR)
+					{
+						Value = PackColor(Quad.m_aColors[v]);
+					}
+					else if(Prop == EQuadPointProp::PROP_TEX_U)
+					{
+						Value = Quad.m_aTexcoords[v].x;
+					}
+					else if(Prop == EQuadPointProp::PROP_TEX_V)
+					{
+						Value = Quad.m_aTexcoords[v].y;
+					}
+
+					if(Value != m_PreviousValuesPoint[QuadIndex][v][Prop])
+						vpActions.push_back(std::make_shared<CEditorActionEditQuadPointProp>(m_pEditor, GroupIndex, LayerIndex, QuadIndex, v, Prop, m_PreviousValuesPoint[QuadIndex][v][Prop], Value));
+				}
+			}
+		}
+	}
+
+	if(!vpActions.empty())
+		m_pEditor->m_EditorHistory.RecordAction(std::make_shared<CEditorActionBulk>(m_pEditor, vpActions));
+}
+
+void CQuadEditTracker::EndQuadPointPropTrackAll()
+{
+	std::vector<std::shared_ptr<IEditorAction>> vpActions;
+	for(auto &Prop : m_vTrackedProps)
+	{
+		int GroupIndex = m_pEditor->m_SelectedGroup;
+		int LayerIndex = m_pEditor->m_vSelectedLayers[0];
+
+		for(auto QuadIndex : m_vSelectedQuads)
+		{
+			auto &Quad = m_pLayer->m_vQuads[QuadIndex];
+			if(Prop == EQuadPointProp::PROP_POS_X || Prop == EQuadPointProp::PROP_POS_Y)
+			{
+				auto vCurrentPoints = std::vector<CPoint>(Quad.m_aPoints, Quad.m_aPoints + 5);
+				vpActions.push_back(std::make_shared<CEditorActionEditQuadPoint>(m_pEditor, GroupIndex, LayerIndex, QuadIndex, m_InitalPoints[QuadIndex], vCurrentPoints));
+			}
+			else
+			{
+				int Value = 0;
+				for(int v = 0; v < 4; v++)
+				{
+					if(m_SelectedQuadPoints & (1 << v))
+					{
+						if(Prop == EQuadPointProp::PROP_COLOR)
+						{
+							Value = PackColor(Quad.m_aColors[v]);
+						}
+						else if(Prop == EQuadPointProp::PROP_TEX_U)
+						{
+							Value = Quad.m_aTexcoords[v].x;
+						}
+						else if(Prop == EQuadPointProp::PROP_TEX_V)
+						{
+							Value = Quad.m_aTexcoords[v].y;
+						}
+
+						if(Value != m_PreviousValuesPoint[QuadIndex][v][Prop])
+							vpActions.push_back(std::make_shared<CEditorActionEditQuadPointProp>(m_pEditor, GroupIndex, LayerIndex, QuadIndex, v, Prop, m_PreviousValuesPoint[QuadIndex][v][Prop], Value));
+					}
+				}
+			}
+		}
+	}
+
+	if(!vpActions.empty())
+		m_pEditor->m_EditorHistory.RecordAction(std::make_shared<CEditorActionBulk>(m_pEditor, vpActions));
+
+	m_vTrackedProps.clear();
+}
+
+void CEditorPropTracker::BeginPropTrack(int Prop, int Value)
+{
+	if(m_TrackedProp != -1 || m_TrackedProp == Prop)
+		return;
+	m_TrackedProp = Prop;
+	m_PreviousValue = Value;
+}
+
+void CEditorPropTracker::StopPropTrack(int Prop, int Value)
+{
+	if(Prop != m_TrackedProp)
+		return;
+	m_TrackedProp = -1;
+	m_CurrentValue = Value;
+}
+
+// -----------------------------
+
+void CEnvelopeEditorOperationTracker::Begin(EEnvelopeEditorOp Operation)
+{
+	if(m_TrackedOp == Operation)
+		return;
+
+	if(m_TrackedOp != EEnvelopeEditorOp::OP_NONE)
+	{
+		Stop(true);
+	}
+
+	m_TrackedOp = Operation;
+
+	if(Operation == EEnvelopeEditorOp::OP_DRAG_POINT || Operation == EEnvelopeEditorOp::OP_DRAG_POINT_X || Operation == EEnvelopeEditorOp::OP_DRAG_POINT_Y || Operation == EEnvelopeEditorOp::OP_SCALE)
+	{
+		HandlePointDragStart();
+	}
+}
+
+void CEnvelopeEditorOperationTracker::Stop(bool Switch)
+{
+	if(m_TrackedOp == EEnvelopeEditorOp::OP_NONE)
+		return;
+
+	if(m_TrackedOp == EEnvelopeEditorOp::OP_DRAG_POINT || m_TrackedOp == EEnvelopeEditorOp::OP_DRAG_POINT_X || m_TrackedOp == EEnvelopeEditorOp::OP_DRAG_POINT_Y || m_TrackedOp == EEnvelopeEditorOp::OP_SCALE)
+	{
+		HandlePointDragEnd(Switch);
+	}
+
+	m_TrackedOp = EEnvelopeEditorOp::OP_NONE;
+}
+
+void CEnvelopeEditorOperationTracker::HandlePointDragStart()
+{
+	// Figure out which points are selected and which channels
+	// Save their X and Y position (time and value)
+	auto pEnv = m_pEditor->m_Map.m_vpEnvelopes[m_pEditor->m_SelectedEnvelope];
+
+	for(auto [PointIndex, Channel] : m_pEditor->m_vSelectedEnvelopePoints)
+	{
+		auto &Point = pEnv->m_vPoints[PointIndex];
+		auto &Data = m_SavedValues[PointIndex];
+		Data.m_Values[Channel] = Point.m_aValues[Channel];
+		if(Data.m_Used)
+			continue;
+		Data.m_Time = Point.m_Time;
+		Data.m_Used = true;
+	}
+}
+
+void CEnvelopeEditorOperationTracker::HandlePointDragEnd(bool Switch)
+{
+	if(Switch && m_TrackedOp != EEnvelopeEditorOp::OP_SCALE)
+		return;
+
+	int EnvIndex = m_pEditor->m_SelectedEnvelope;
+	auto pEnv = m_pEditor->m_Map.m_vpEnvelopes[EnvIndex];
+	std::vector<std::shared_ptr<IEditorAction>> vpActions;
+
+	for(auto const &Entry : m_SavedValues)
+	{
+		int PointIndex = Entry.first;
+		auto &Point = pEnv->m_vPoints[PointIndex];
+		const auto &Data = Entry.second;
+
+		if(Data.m_Time != Point.m_Time)
+		{ // Save time
+			vpActions.push_back(std::make_shared<CEditorActionEnvelopeEditPoint>(m_pEditor, EnvIndex, PointIndex, 0, CEditorActionEnvelopeEditPoint::EEditType::TIME, Data.m_Time, Point.m_Time));
+		}
+
+		for(auto Value : Data.m_Values)
+		{
+			// Value.second is the saved value, Value.first is the channel
+			int Channel = Value.first;
+			if(Value.second != Point.m_aValues[Channel])
+			{ // Save value
+				vpActions.push_back(std::make_shared<CEditorActionEnvelopeEditPoint>(m_pEditor, EnvIndex, PointIndex, Channel, CEditorActionEnvelopeEditPoint::EEditType::VALUE, Value.second, Point.m_aValues[Channel]));
+			}
+		}
+	}
+
+	if(!vpActions.empty())
+	{
+		m_pEditor->m_EnvelopeEditorHistory.RecordAction(std::make_shared<CEditorActionBulk>(m_pEditor, vpActions, "Envelope point drag"));
+	}
+
+	m_SavedValues.clear();
+}
+
+// -----------------------------------------------------------------------
+
+void CLayerPropTracker::OnEnd(ELayerProp Prop, int Value)
+{
+	m_pEditor->m_EditorHistory.RecordAction(std::make_shared<CEditorActionEditLayerProp>(m_pEditor, m_pEditor->m_SelectedGroup, m_pEditor->m_vSelectedLayers[0], Prop, m_OriginalValue, Value));
+}
+
+int CLayerPropTracker::PropToValue(ELayerProp Prop)
+{
+	switch(Prop)
+	{
+	case ELayerProp::PROP_GROUP: return m_pEditor->m_SelectedGroup;
+	case ELayerProp::PROP_HQ: return m_pObject->m_Flags;
+	case ELayerProp::PROP_ORDER: return m_pEditor->m_vSelectedLayers[0];
+	default: return 0;
+	}
+}
+
+// -----------------------------------------------------------------------
+
+bool CLayerTilesPropTracker::EndChecker(ETilesProp Prop, EEditState State, int Value)
+{
+	return (State == EEditState::END || State == EEditState::ONE_GO) && (Value != m_OriginalValue || Prop == ETilesProp::PROP_SHIFT);
+}
+
+void CLayerTilesPropTracker::OnStart(ETilesProp Prop)
+{
+	if(Prop == ETilesProp::PROP_WIDTH || Prop == ETilesProp::PROP_HEIGHT)
+	{
+		m_SavedLayers[LAYERTYPE_TILES] = m_pObject->Duplicate();
+		if(m_pObject->m_Game || m_pObject->m_Front || m_pObject->m_Switch || m_pObject->m_Speedup || m_pObject->m_Tune || m_pObject->m_Tele)
+		{ // Need to save all entities layers when any entity layer
+			if(m_pEditor->m_Map.m_pFrontLayer && !m_pObject->m_Front)
+				m_SavedLayers[LAYERTYPE_FRONT] = m_pEditor->m_Map.m_pFrontLayer->Duplicate();
+			if(m_pEditor->m_Map.m_pTeleLayer && !m_pObject->m_Tele)
+				m_SavedLayers[LAYERTYPE_TELE] = m_pEditor->m_Map.m_pTeleLayer->Duplicate();
+			if(m_pEditor->m_Map.m_pSwitchLayer && !m_pObject->m_Switch)
+				m_SavedLayers[LAYERTYPE_SWITCH] = m_pEditor->m_Map.m_pSwitchLayer->Duplicate();
+			if(m_pEditor->m_Map.m_pSpeedupLayer && !m_pObject->m_Speedup)
+				m_SavedLayers[LAYERTYPE_SPEEDUP] = m_pEditor->m_Map.m_pSpeedupLayer->Duplicate();
+			if(m_pEditor->m_Map.m_pTuneLayer && !m_pObject->m_Tune)
+				m_SavedLayers[LAYERTYPE_TUNE] = m_pEditor->m_Map.m_pTuneLayer->Duplicate();
+			if(!m_pObject->m_Game)
+				m_SavedLayers[LAYERTYPE_GAME] = m_pEditor->m_Map.m_pGameLayer->Duplicate();
+		}
+	}
+	else if(Prop == ETilesProp::PROP_SHIFT)
+	{
+		m_SavedLayers[LAYERTYPE_TILES] = m_pObject->Duplicate();
+	}
+}
+
+void CLayerTilesPropTracker::OnEnd(ETilesProp Prop, int Value)
+{
+	auto pAction = std::make_shared<CEditorActionEditLayerTilesProp>(m_pEditor, m_pEditor->m_SelectedGroup, m_pEditor->m_vSelectedLayers[0], Prop, m_OriginalValue, Value);
+
+	pAction->SetSavedLayers(m_SavedLayers);
+	m_SavedLayers.clear();
+
+	m_pEditor->m_EditorHistory.RecordAction(pAction);
+}
+
+int CLayerTilesPropTracker::PropToValue(ETilesProp Prop)
+{
+	switch(Prop)
+	{
+	case ETilesProp::PROP_AUTOMAPPER: return m_pObject->m_AutoMapperConfig;
+	case ETilesProp::PROP_COLOR: return PackColor(m_pObject->m_Color);
+	case ETilesProp::PROP_COLOR_ENV: return m_pObject->m_ColorEnv;
+	case ETilesProp::PROP_COLOR_ENV_OFFSET: return m_pObject->m_ColorEnvOffset;
+	case ETilesProp::PROP_HEIGHT: return m_pObject->m_Height;
+	case ETilesProp::PROP_WIDTH: return m_pObject->m_Width;
+	case ETilesProp::PROP_IMAGE: return m_pObject->m_Image;
+	case ETilesProp::PROP_SEED: return m_pObject->m_Seed;
+	case ETilesProp::PROP_SHIFT_BY: return m_pEditor->m_ShiftBy;
+	default: return 0;
+	}
+}
+
+// ------------------------------
+
+void CLayerTilesCommonPropTracker::OnStart(ETilesCommonProp Prop)
+{
+	for(auto &pLayer : m_vpLayers)
+	{
+		if(Prop == ETilesCommonProp::PROP_SHIFT)
+		{
+			m_SavedLayers[pLayer][LAYERTYPE_TILES] = pLayer->Duplicate();
+		}
+	}
+}
+
+void CLayerTilesCommonPropTracker::OnEnd(ETilesCommonProp Prop, int Value)
+{
+	std::vector<std::shared_ptr<IEditorAction>> vpActions;
+
+	static std::map<ETilesCommonProp, ETilesProp> s_PropMap{
+		{ETilesCommonProp::PROP_COLOR, ETilesProp::PROP_COLOR},
+		{ETilesCommonProp::PROP_SHIFT, ETilesProp::PROP_SHIFT},
+		{ETilesCommonProp::PROP_SHIFT_BY, ETilesProp::PROP_SHIFT_BY}};
+
+	int j = 0;
+	for(auto &pLayer : m_vpLayers)
+	{
+		int LayerIndex = m_vLayerIndices[j++];
+		auto pAction = std::make_shared<CEditorActionEditLayerTilesProp>(m_pEditor, m_pEditor->m_SelectedGroup, LayerIndex, s_PropMap[Prop], m_OriginalValue, Value);
+		pAction->SetSavedLayers(m_SavedLayers[pLayer]);
+		vpActions.push_back(pAction);
+	}
+
+	char aDisplay[256];
+	static const char *s_apNames[] = {
+		"width",
+		"height",
+		"shift",
+		"shift by",
+		"color",
+	};
+
+	str_format(aDisplay, sizeof(aDisplay), "Edit %d layers common property: %s", (int)m_vpLayers.size(), s_apNames[(int)Prop]);
+	m_pEditor->m_EditorHistory.RecordAction(std::make_shared<CEditorActionBulk>(m_pEditor, vpActions, aDisplay));
+}
+
+bool CLayerTilesCommonPropTracker::EndChecker(ETilesCommonProp Prop, EEditState State, int Value)
+{
+	return (State == EEditState::END || State == EEditState::ONE_GO) && (Value != m_OriginalValue || Prop == ETilesCommonProp::PROP_SHIFT);
+}
+
+int CLayerTilesCommonPropTracker::PropToValue(ETilesCommonProp Prop)
+{
+	if(Prop == ETilesCommonProp::PROP_SHIFT_BY)
+		return m_pEditor->m_ShiftBy;
+	return 0;
+}
+
+// ------------------------------
+
+void CLayerGroupPropTracker::OnEnd(EGroupProp Prop, int Value)
+{
+	m_pEditor->m_EditorHistory.RecordAction(std::make_shared<CEditorActionEditGroupProp>(m_pEditor, m_pEditor->m_SelectedGroup, Prop, m_OriginalValue, Value));
+}
+
+int CLayerGroupPropTracker::PropToValue(EGroupProp Prop)
+{
+	switch(Prop)
+	{
+	case EGroupProp::PROP_ORDER: return m_pEditor->m_SelectedGroup;
+	case EGroupProp::PROP_POS_X: return m_pObject->m_OffsetX;
+	case EGroupProp::PROP_POS_Y: return m_pObject->m_OffsetY;
+	case EGroupProp::PROP_PARA_X: return m_pObject->m_ParallaxX;
+	case EGroupProp::PROP_PARA_Y: return m_pObject->m_ParallaxY;
+	case EGroupProp::PROP_USE_CLIPPING: return m_pObject->m_UseClipping;
+	case EGroupProp::PROP_CLIP_X: return m_pObject->m_ClipX;
+	case EGroupProp::PROP_CLIP_Y: return m_pObject->m_ClipY;
+	case EGroupProp::PROP_CLIP_W: return m_pObject->m_ClipW;
+	case EGroupProp::PROP_CLIP_H: return m_pObject->m_ClipH;
+	default: return 0;
+	}
+}
+
+// ------------------------------------------------------------------
+
+void CLayerQuadsPropTracker::OnEnd(ELayerQuadsProp Prop, int Value)
+{
+	auto pAction = std::make_shared<CEditorActionEditLayerQuadsProp>(m_pEditor, m_pEditor->m_SelectedGroup, m_pEditor->m_vSelectedLayers[0], Prop, m_OriginalValue, Value);
+	m_pEditor->m_EditorHistory.RecordAction(pAction);
+}
+
+int CLayerQuadsPropTracker::PropToValue(ELayerQuadsProp Prop)
+{
+	if(Prop == ELayerQuadsProp::PROP_IMAGE)
+		return m_pObject->m_Image;
+	return 0;
+}
+
+// -------------------------------------------------------------------
+
+void CLayerSoundsPropTracker::OnEnd(ELayerSoundsProp Prop, int Value)
+{
+	auto pAction = std::make_shared<CEditorActionEditLayerSoundsProp>(m_pEditor, m_pEditor->m_SelectedGroup, m_pEditor->m_vSelectedLayers[0], Prop, m_OriginalValue, Value);
+	m_pEditor->m_EditorHistory.RecordAction(pAction);
+}
+
+int CLayerSoundsPropTracker::PropToValue(ELayerSoundsProp Prop)
+{
+	if(Prop == ELayerSoundsProp::PROP_SOUND)
+		return m_pObject->m_Sound;
+	return 0;
+}
+
+// ----
+
+void CSoundSourcePropTracker::OnEnd(ESoundProp Prop, int Value)
+{
+	m_pEditor->m_EditorHistory.RecordAction(std::make_shared<CEditorActionEditSoundSourceProp>(m_pEditor, m_pEditor->m_SelectedGroup, m_pEditor->m_vSelectedLayers[0], m_pEditor->m_SelectedSource, Prop, m_OriginalValue, Value));
+}
+
+int CSoundSourcePropTracker::PropToValue(ESoundProp Prop)
+{
+	switch(Prop)
+	{
+	case ESoundProp::PROP_POS_X: return m_pObject->m_Position.x;
+	case ESoundProp::PROP_POS_Y: return m_pObject->m_Position.y;
+	case ESoundProp::PROP_LOOP: return m_pObject->m_Loop;
+	case ESoundProp::PROP_PAN: return m_pObject->m_Pan;
+	case ESoundProp::PROP_TIME_DELAY: return m_pObject->m_TimeDelay;
+	case ESoundProp::PROP_FALLOFF: return m_pObject->m_Falloff;
+	case ESoundProp::PROP_POS_ENV: return m_pObject->m_PosEnv;
+	case ESoundProp::PROP_POS_ENV_OFFSET: return m_pObject->m_PosEnvOffset;
+	case ESoundProp::PROP_SOUND_ENV: return m_pObject->m_SoundEnv;
+	case ESoundProp::PROP_SOUND_ENV_OFFSET: return m_pObject->m_SoundEnvOffset;
+	default: return 0;
+	}
+}
+
+// ----
+
+void CSoundSourceRectShapePropTracker::OnEnd(ERectangleShapeProp Prop, int Value)
+{
+	m_pEditor->m_EditorHistory.RecordAction(std::make_shared<CEditorActionEditRectSoundSourceShapeProp>(m_pEditor, m_pEditor->m_SelectedGroup, m_pEditor->m_vSelectedLayers[0], m_pEditor->m_SelectedSource, Prop, m_OriginalValue, Value));
+}
+
+int CSoundSourceRectShapePropTracker::PropToValue(ERectangleShapeProp Prop)
+{
+	switch(Prop)
+	{
+	case ERectangleShapeProp::PROP_RECTANGLE_WIDTH: return m_pObject->m_Shape.m_Rectangle.m_Width;
+	case ERectangleShapeProp::PROP_RECTANGLE_HEIGHT: return m_pObject->m_Shape.m_Rectangle.m_Height;
+	default: return 0;
+	}
+}
+
+void CSoundSourceCircleShapePropTracker::OnEnd(ECircleShapeProp Prop, int Value)
+{
+	m_pEditor->m_EditorHistory.RecordAction(std::make_shared<CEditorActionEditCircleSoundSourceShapeProp>(m_pEditor, m_pEditor->m_SelectedGroup, m_pEditor->m_vSelectedLayers[0], m_pEditor->m_SelectedSource, Prop, m_OriginalValue, Value));
+}
+
+int CSoundSourceCircleShapePropTracker::PropToValue(ECircleShapeProp Prop)
+{
+	switch(Prop)
+	{
+	case ECircleShapeProp::PROP_CIRCLE_RADIUS: return m_pObject->m_Shape.m_Circle.m_Radius;
+	default: return 0;
+	}
+}

src/game/editor/editor_trackers.h

@@ -0,0 +1,271 @@
+#ifndef GAME_EDITOR_EDITOR_TRACKERS_H
+#define GAME_EDITOR_EDITOR_TRACKERS_H
+
+#include <game/editor/mapitems.h>
+#include <game/editor/mapitems/layer_quads.h>
+#include <game/mapitems.h>
+
+#include <map>
+#include <memory>
+#include <vector>
+
+class CEditor;
+class CLayerTiles;
+class CLayerGroup;
+class CLayerSounds;
+struct CSoundSource;
+
+class CQuadEditTracker
+{
+public:
+	CQuadEditTracker();
+	~CQuadEditTracker();
+
+	void BeginQuadTrack(const std::shared_ptr<CLayerQuads> &pLayer, const std::vector<int> &vSelectedQuads);
+	void EndQuadTrack();
+
+	void BeginQuadPropTrack(const std::shared_ptr<CLayerQuads> &pLayer, const std::vector<int> &vSelectedQuads, EQuadProp Prop);
+	void EndQuadPropTrack(EQuadProp Prop);
+
+	void BeginQuadPointPropTrack(const std::shared_ptr<CLayerQuads> &pLayer, const std::vector<int> &vSelectedQuads, int SelectedQuadPoints);
+	void AddQuadPointPropTrack(EQuadPointProp Prop);
+	void EndQuadPointPropTrack(EQuadPointProp Prop);
+	void EndQuadPointPropTrackAll();
+
+	CEditor *m_pEditor;
+
+private:
+	std::vector<int> m_vSelectedQuads;
+	int m_SelectedQuadPoints;
+	std::map<int, std::vector<CPoint>> m_InitalPoints;
+
+	bool m_Tracking = false;
+	std::shared_ptr<CLayerQuads> m_pLayer;
+
+	EQuadProp m_TrackedProp;
+	std::vector<EQuadPointProp> m_vTrackedProps;
+	std::map<int, int> m_PreviousValues;
+	std::map<int, std::vector<std::map<EQuadPointProp, int>>> m_PreviousValuesPoint;
+};
+
+class CEditorPropTracker
+{
+public:
+	CEditorPropTracker() = default;
+
+	void BeginPropTrack(int Prop, int Value);
+	void StopPropTrack(int Prop, int Value);
+	inline void Reset() { m_TrackedProp = -1; }
+
+	CEditor *m_pEditor;
+	int m_PreviousValue;
+	int m_CurrentValue;
+
+private:
+	int m_TrackedProp = -1;
+};
+
+enum class EEnvelopeEditorOp
+{
+	OP_NONE = 0,
+	OP_SELECT,
+	OP_DRAG_POINT,
+	OP_DRAG_POINT_X,
+	OP_DRAG_POINT_Y,
+	OP_CONTEXT_MENU,
+	OP_BOX_SELECT,
+	OP_SCALE
+};
+
+class CEnvelopeEditorOperationTracker
+{
+public:
+	CEnvelopeEditorOperationTracker() = default;
+
+	void Begin(EEnvelopeEditorOp Operation);
+	void Stop(bool Switch = true);
+	inline void Reset() { m_TrackedOp = EEnvelopeEditorOp::OP_NONE; }
+
+	CEditor *m_pEditor;
+
+private:
+	EEnvelopeEditorOp m_TrackedOp = EEnvelopeEditorOp::OP_NONE;
+
+	struct SPointData
+	{
+		bool m_Used;
+		int m_Time;
+		std::map<int, int> m_Values;
+	};
+
+	std::map<int, SPointData> m_SavedValues;
+
+	void HandlePointDragStart();
+	void HandlePointDragEnd(bool Switch);
+};
+
+template<typename T, typename E>
+class CPropTracker
+{
+public:
+	CPropTracker(CEditor *pEditor) :
+		m_pEditor(pEditor), m_OriginalValue(0) {}
+	CEditor *m_pEditor;
+
+	void Begin(T *pObject, E Prop, EEditState State)
+	{
+		if(Prop == static_cast<E>(-1))
+			return;
+		m_pObject = pObject;
+		int Value = PropToValue(Prop);
+		if(StartChecker(Prop, State, Value))
+		{
+			m_OriginalValue = Value;
+			OnStart(Prop);
+		}
+	}
+
+	void End(E Prop, EEditState State)
+	{
+		if(Prop == static_cast<E>(-1))
+			return;
+		int Value = PropToValue(Prop);
+		if(EndChecker(Prop, State, Value))
+		{
+			OnEnd(Prop, Value);
+		}
+	}
+
+protected:
+	virtual void OnStart(E Prop) {}
+	virtual void OnEnd(E Prop, int Value) {}
+	virtual int PropToValue(E Prop) { return 0; }
+	virtual bool StartChecker(E Prop, EEditState State, int Value)
+	{
+		return State == EEditState::START || State == EEditState::ONE_GO;
+	}
+	virtual bool EndChecker(E Prop, EEditState State, int Value)
+	{
+		return (State == EEditState::END || State == EEditState::ONE_GO) && (Value != m_OriginalValue);
+	}
+
+	int m_OriginalValue;
+	T *m_pObject;
+};
+
+class CLayerPropTracker : public CPropTracker<CLayer, ELayerProp>
+{
+public:
+	CLayerPropTracker(CEditor *pEditor) :
+		CPropTracker<CLayer, ELayerProp>(pEditor){};
+
+protected:
+	void OnEnd(ELayerProp Prop, int Value) override;
+	int PropToValue(ELayerProp Prop) override;
+};
+
+class CLayerTilesPropTracker : public CPropTracker<CLayerTiles, ETilesProp>
+{
+public:
+	CLayerTilesPropTracker(CEditor *pEditor) :
+		CPropTracker<CLayerTiles, ETilesProp>(pEditor){};
+
+protected:
+	void OnStart(ETilesProp Prop) override;
+	void OnEnd(ETilesProp Prop, int Value) override;
+	bool EndChecker(ETilesProp Prop, EEditState State, int Value) override;
+
+	int PropToValue(ETilesProp Prop) override;
+
+private:
+	std::map<int, std::shared_ptr<CLayer>> m_SavedLayers;
+};
+
+class CLayerTilesCommonPropTracker : public CPropTracker<CLayerTiles, ETilesCommonProp>
+{
+public:
+	CLayerTilesCommonPropTracker(CEditor *pEditor) :
+		CPropTracker<CLayerTiles, ETilesCommonProp>(pEditor){};
+
+protected:
+	void OnStart(ETilesCommonProp Prop) override;
+	void OnEnd(ETilesCommonProp Prop, int Value) override;
+	bool EndChecker(ETilesCommonProp Prop, EEditState State, int Value) override;
+
+	int PropToValue(ETilesCommonProp Prop) override;
+
+private:
+	std::map<std::shared_ptr<CLayerTiles>, std::map<int, std::shared_ptr<CLayer>>> m_SavedLayers;
+
+public:
+	std::vector<std::shared_ptr<CLayerTiles>> m_vpLayers;
+	std::vector<int> m_vLayerIndices;
+};
+
+class CLayerGroupPropTracker : public CPropTracker<CLayerGroup, EGroupProp>
+{
+public:
+	CLayerGroupPropTracker(CEditor *pEditor) :
+		CPropTracker<CLayerGroup, EGroupProp>(pEditor){};
+
+protected:
+	void OnEnd(EGroupProp Prop, int Value) override;
+	int PropToValue(EGroupProp Prop) override;
+};
+
+class CLayerQuadsPropTracker : public CPropTracker<CLayerQuads, ELayerQuadsProp>
+{
+public:
+	CLayerQuadsPropTracker(CEditor *pEditor) :
+		CPropTracker<CLayerQuads, ELayerQuadsProp>(pEditor){};
+
+protected:
+	void OnEnd(ELayerQuadsProp Prop, int Value) override;
+	int PropToValue(ELayerQuadsProp Prop) override;
+};
+
+class CLayerSoundsPropTracker : public CPropTracker<CLayerSounds, ELayerSoundsProp>
+{
+public:
+	CLayerSoundsPropTracker(CEditor *pEditor) :
+		CPropTracker<CLayerSounds, ELayerSoundsProp>(pEditor){};
+
+protected:
+	void OnEnd(ELayerSoundsProp Prop, int Value) override;
+	int PropToValue(ELayerSoundsProp Prop) override;
+};
+
+class CSoundSourcePropTracker : public CPropTracker<CSoundSource, ESoundProp>
+{
+public:
+	CSoundSourcePropTracker(CEditor *pEditor) :
+		CPropTracker<CSoundSource, ESoundProp>(pEditor) {}
+
+protected:
+	void OnEnd(ESoundProp Prop, int Value) override;
+	int PropToValue(ESoundProp Prop) override;
+};
+
+class CSoundSourceRectShapePropTracker : public CPropTracker<CSoundSource, ERectangleShapeProp>
+{
+public:
+	CSoundSourceRectShapePropTracker(CEditor *pEditor) :
+		CPropTracker<CSoundSource, ERectangleShapeProp>(pEditor) {}
+
+protected:
+	void OnEnd(ERectangleShapeProp Prop, int Value) override;
+	int PropToValue(ERectangleShapeProp Prop) override;
+};
+
+class CSoundSourceCircleShapePropTracker : public CPropTracker<CSoundSource, ECircleShapeProp>
+{
+public:
+	CSoundSourceCircleShapePropTracker(CEditor *pEditor) :
+		CPropTracker<CSoundSource, ECircleShapeProp>(pEditor) {}
+
+protected:
+	void OnEnd(ECircleShapeProp Prop, int Value) override;
+	int PropToValue(ECircleShapeProp Prop) override;
+};
+
+#endif

src/game/editor/mapitems.h

@@ -0,0 +1,125 @@
+#ifndef GAME_EDITOR_MAPITEMS_H
+#define GAME_EDITOR_MAPITEMS_H
+
+enum class EQuadProp
+{
+	PROP_NONE = -1,
+	PROP_ORDER,
+	PROP_POS_X,
+	PROP_POS_Y,
+	PROP_POS_ENV,
+	PROP_POS_ENV_OFFSET,
+	PROP_COLOR_ENV,
+	PROP_COLOR_ENV_OFFSET,
+	NUM_PROPS,
+};
+
+enum class EQuadPointProp
+{
+	PROP_NONE = -1,
+	PROP_POS_X,
+	PROP_POS_Y,
+	PROP_COLOR,
+	PROP_TEX_U,
+	PROP_TEX_V,
+	NUM_PROPS,
+};
+
+enum class ESoundProp
+{
+	PROP_NONE = -1,
+	PROP_POS_X,
+	PROP_POS_Y,
+	PROP_LOOP,
+	PROP_PAN,
+	PROP_TIME_DELAY,
+	PROP_FALLOFF,
+	PROP_POS_ENV,
+	PROP_POS_ENV_OFFSET,
+	PROP_SOUND_ENV,
+	PROP_SOUND_ENV_OFFSET,
+	NUM_PROPS,
+};
+
+enum class ERectangleShapeProp
+{
+	PROP_NONE = -1,
+	PROP_RECTANGLE_WIDTH,
+	PROP_RECTANGLE_HEIGHT,
+	NUM_RECTANGLE_PROPS,
+};
+
+enum class ECircleShapeProp
+{
+	PROP_NONE = -1,
+	PROP_CIRCLE_RADIUS,
+	NUM_CIRCLE_PROPS,
+};
+
+enum class ELayerProp
+{
+	PROP_NONE = -1,
+	PROP_GROUP,
+	PROP_ORDER,
+	PROP_HQ,
+	NUM_PROPS,
+};
+
+enum class ETilesProp
+{
+	PROP_NONE = -1,
+	PROP_WIDTH,
+	PROP_HEIGHT,
+	PROP_SHIFT,
+	PROP_SHIFT_BY,
+	PROP_IMAGE,
+	PROP_COLOR,
+	PROP_COLOR_ENV,
+	PROP_COLOR_ENV_OFFSET,
+	PROP_AUTOMAPPER,
+	PROP_SEED,
+	NUM_PROPS
+};
+
+enum class ETilesCommonProp
+{
+	PROP_NONE = -1,
+	PROP_WIDTH,
+	PROP_HEIGHT,
+	PROP_SHIFT,
+	PROP_SHIFT_BY,
+	PROP_COLOR,
+	NUM_PROPS,
+};
+
+enum class EGroupProp
+{
+	PROP_NONE = -1,
+	PROP_ORDER,
+	PROP_POS_X,
+	PROP_POS_Y,
+	PROP_PARA_X,
+	PROP_PARA_Y,
+	PROP_USE_CLIPPING,
+	PROP_CLIP_X,
+	PROP_CLIP_Y,
+	PROP_CLIP_W,
+	PROP_CLIP_H,
+	NUM_PROPS,
+};
+
+enum class ELayerQuadsProp
+{
+	PROP_NONE = -1,
+	PROP_IMAGE,
+	NUM_PROPS,
+};
+
+enum class ELayerSoundsProp
+{
+	PROP_NONE = -1,
+	PROP_SOUND,
+	NUM_PROPS,
+};
+
+#endif

src/game/editor/mapitems/envelope.h

@@ -25,6 +25,7 @@ public:
 	void AddPoint(int Time, int v0, int v1 = 0, int v2 = 0, int v3 = 0);
 	float EndTime() const;
 	int GetChannels() const;
+	EType Type() const { return m_Type; }
 
 private:
 	void Resort();

src/game/editor/mapitems/layer.h

@@ -62,6 +62,7 @@ public:
 	virtual void ModifySoundIndex(FIndexModifyFunction pfnFunc) {}
 
 	virtual std::shared_ptr<CLayer> Duplicate() const = 0;
+	virtual const char *TypeName() const = 0;
 
 	virtual void GetSize(float *pWidth, float *pHeight)
 	{

src/game/editor/mapitems/layer_front.cpp

@@ -45,3 +45,8 @@ void CLayerFront::Resize(int NewW, int NewH)
 	if(m_pEditor->m_Map.m_pGameLayer->m_Width != NewW || m_pEditor->m_Map.m_pGameLayer->m_Height != NewH)
 		m_pEditor->m_Map.m_pGameLayer->Resize(NewW, NewH);
 }
+
+const char *CLayerFront::TypeName() const
+{
+	return "front";
+}

src/game/editor/mapitems/layer_front.h

@@ -10,6 +10,7 @@ public:
 
 	void Resize(int NewW, int NewH) override;
 	void SetTile(int x, int y, CTile Tile) override;
+	const char *TypeName() const override;
 };
 
 #endif

src/game/editor/mapitems/layer_game.cpp

@@ -72,3 +72,8 @@ CUI::EPopupMenuFunctionResult CLayerGame::RenderProperties(CUIRect *pToolbox)
 	m_Image = -1;
 	return Result;
 }
+
+const char *CLayerGame::TypeName() const
+{
+	return "game";
+}

src/game/editor/mapitems/layer_game.h

@@ -11,6 +11,7 @@ public:
 
 	CTile GetTile(int x, int y) override;
 	void SetTile(int x, int y, CTile Tile) override;
+	const char *TypeName() const override;
 
 	CUI::EPopupMenuFunctionResult RenderProperties(CUIRect *pToolbox) override;
 };

src/game/editor/mapitems/layer_quads.cpp

@@ -3,6 +3,7 @@
 #include "layer_quads.h"
 
 #include <game/editor/editor.h>
+#include <game/editor/editor_actions.h>
 
 #include "image.h"
 
@@ -140,6 +141,7 @@ int CLayerQuads::BrushGrab(std::shared_ptr<CLayerGroup> pBrush, CUIRect Rect)
 void CLayerQuads::BrushPlace(std::shared_ptr<CLayer> pBrush, float wx, float wy)
 {
 	std::shared_ptr<CLayerQuads> pQuadLayer = std::static_pointer_cast<CLayerQuads>(pBrush);
+	std::vector<CQuad> vAddedQuads;
 	for(const auto &Quad : pQuadLayer->m_vQuads)
 	{
 		CQuad n = Quad;
@@ -151,7 +153,9 @@ void CLayerQuads::BrushPlace(std::shared_ptr<CLayer> pBrush, float wx, float wy)
 		}
 
 		m_vQuads.push_back(n);
+		vAddedQuads.push_back(n);
 	}
+	m_pEditor->m_EditorHistory.RecordAction(std::make_shared<CEditorActionQuadPlace>(m_pEditor, m_pEditor->m_SelectedGroup, m_pEditor->m_vSelectedLayers[0], vAddedQuads));
 	m_pEditor->m_Map.OnModify();
 }
 
@@ -219,26 +223,23 @@ void CLayerQuads::GetSize(float *pWidth, float *pHeight)
 
 CUI::EPopupMenuFunctionResult CLayerQuads::RenderProperties(CUIRect *pToolBox)
 {
-	enum
-	{
-		PROP_IMAGE = 0,
-		NUM_PROPS,
-	};
-
 	CProperty aProps[] = {
 		{"Image", m_Image, PROPTYPE_IMAGE, -1, 0},
 		{nullptr},
 	};
 
-	static int s_aIds[NUM_PROPS] = {0};
+	static int s_aIds[(int)ELayerQuadsProp::NUM_PROPS] = {0};
 	int NewVal = 0;
-	int Prop = m_pEditor->DoProperties(pToolBox, aProps, s_aIds, &NewVal);
-	if(Prop != -1)
+	auto [State, Prop] = m_pEditor->DoPropertiesWithState<ELayerQuadsProp>(pToolBox, aProps, s_aIds, &NewVal);
+	if(Prop != ELayerQuadsProp::PROP_NONE)
 	{
 		m_pEditor->m_Map.OnModify();
 	}
 
-	if(Prop == PROP_IMAGE)
+	static CLayerQuadsPropTracker s_Tracker(m_pEditor);
+	s_Tracker.Begin(this, Prop, State);
+
+	if(Prop == ELayerQuadsProp::PROP_IMAGE)
 	{
 		if(NewVal >= 0)
 			m_Image = NewVal % m_pEditor->m_Map.m_vpImages.size();
@@ -246,6 +247,8 @@ CUI::EPopupMenuFunctionResult CLayerQuads::RenderProperties(CUIRect *pToolBox)
 			m_Image = -1;
 	}
 
+	s_Tracker.End(Prop, State);
+
 	return CUI::POPUP_KEEP_OPEN;
 }
 
@@ -280,3 +283,8 @@ int CLayerQuads::SwapQuads(int Index0, int Index1)
 	std::swap(m_vQuads[Index0], m_vQuads[Index1]);
 	return Index1;
 }
+
+const char *CLayerQuads::TypeName() const
+{
+	return "quads";
+}

src/game/editor/mapitems/layer_quads.h

@@ -28,6 +28,7 @@ public:
 
 	void GetSize(float *pWidth, float *pHeight) override;
 	std::shared_ptr<CLayer> Duplicate() const override;
+	const char *TypeName() const override;
 
 	int m_Image;
 	std::vector<CQuad> m_vQuads;

src/game/editor/mapitems/layer_sounds.cpp

@@ -1,7 +1,7 @@
 #include "layer_sounds.h"
 
 #include <game/editor/editor.h>
-
+#include <game/editor/editor_actions.h>
 #include <game/generated/client_data.h>
 
 static const float s_SourceVisualSize = 32.0f;
@@ -171,6 +171,7 @@ int CLayerSounds::BrushGrab(std::shared_ptr<CLayerGroup> pBrush, CUIRect Rect)
 void CLayerSounds::BrushPlace(std::shared_ptr<CLayer> pBrush, float wx, float wy)
 {
 	std::shared_ptr<CLayerSounds> pSoundLayer = std::static_pointer_cast<CLayerSounds>(pBrush);
+	std::vector<CSoundSource> vAddedSources;
 	for(const auto &Source : pSoundLayer->m_vSources)
 	{
 		CSoundSource n = Source;
@@ -179,32 +180,31 @@ void CLayerSounds::BrushPlace(std::shared_ptr<CLayer> pBrush, float wx, float wy
 		n.m_Position.y += f2fx(wy);
 
 		m_vSources.push_back(n);
+		vAddedSources.push_back(n);
 	}
+	m_pEditor->m_EditorHistory.RecordAction(std::make_shared<CEditorActionSoundPlace>(m_pEditor, m_pEditor->m_SelectedGroup, m_pEditor->m_vSelectedLayers[0], vAddedSources));
 	m_pEditor->m_Map.OnModify();
 }
 
 CUI::EPopupMenuFunctionResult CLayerSounds::RenderProperties(CUIRect *pToolBox)
 {
-	enum
-	{
-		PROP_SOUND = 0,
-		NUM_PROPS,
-	};
-
 	CProperty aProps[] = {
 		{"Sound", m_Sound, PROPTYPE_SOUND, -1, 0},
 		{nullptr},
 	};
 
-	static int s_aIds[NUM_PROPS] = {0};
+	static int s_aIds[(int)ELayerSoundsProp::NUM_PROPS] = {0};
 	int NewVal = 0;
-	int Prop = m_pEditor->DoProperties(pToolBox, aProps, s_aIds, &NewVal);
-	if(Prop != -1)
+	auto [State, Prop] = m_pEditor->DoPropertiesWithState<ELayerSoundsProp>(pToolBox, aProps, s_aIds, &NewVal);
+	if(Prop != ELayerSoundsProp::PROP_NONE)
 	{
 		m_pEditor->m_Map.OnModify();
 	}
 
-	if(Prop == PROP_SOUND)
+	static CLayerSoundsPropTracker s_Tracker(m_pEditor);
+	s_Tracker.Begin(this, Prop, State);
+
+	if(Prop == ELayerSoundsProp::PROP_SOUND)
 	{
 		if(NewVal >= 0)
 			m_Sound = NewVal % m_pEditor->m_Map.m_vpSounds.size();
@@ -212,6 +212,8 @@ CUI::EPopupMenuFunctionResult CLayerSounds::RenderProperties(CUIRect *pToolBox)
 			m_Sound = -1;
 	}
 
+	s_Tracker.End(Prop, State);
+
 	return CUI::POPUP_KEEP_OPEN;
 }
 
@@ -233,3 +235,8 @@ std::shared_ptr<CLayer> CLayerSounds::Duplicate() const
 {
 	return std::make_shared<CLayerSounds>(*this);
 }
+
+const char *CLayerSounds::TypeName() const
+{
+	return "sounds";
+}

src/game/editor/mapitems/layer_sounds.h

@@ -23,6 +23,7 @@ public:
 	void ModifySoundIndex(FIndexModifyFunction pfnFunc) override;
 
 	std::shared_ptr<CLayer> Duplicate() const override;
+	const char *TypeName() const override;
 
 	int m_Sound;
 	std::vector<CSoundSource> m_vSources;

src/game/editor/mapitems/layer_speedup.cpp

@@ -12,6 +12,16 @@ CLayerSpeedup::CLayerSpeedup(CEditor *pEditor, int w, int h) :
 	mem_zero(m_pSpeedupTile, (size_t)w * h * sizeof(CSpeedupTile));
 }
 
+CLayerSpeedup::CLayerSpeedup(const CLayerSpeedup &Other) :
+	CLayerTiles(Other)
+{
+	str_copy(m_aName, "Speedup copy");
+	m_Speedup = 1;
+
+	m_pSpeedupTile = new CSpeedupTile[m_Width * m_Height];
+	mem_copy(m_pSpeedupTile, Other.m_pSpeedupTile, (size_t)m_Width * m_Height * sizeof(CSpeedupTile));
+}
+
 CLayerSpeedup::~CLayerSpeedup()
 {
 	delete[] m_pSpeedupTile;
@@ -84,53 +94,78 @@ void CLayerSpeedup::BrushDraw(std::shared_ptr<CLayer> pBrush, float wx, float wy
 			if(!Destructive && GetTile(fx, fy).m_Index)
 				continue;
 
+			int Index = fy * m_Width + fx;
+			SSpeedupTileStateChange::SData Previous{
+				m_pSpeedupTile[Index].m_Force,
+				m_pSpeedupTile[Index].m_Angle,
+				m_pSpeedupTile[Index].m_MaxSpeed,
+				m_pSpeedupTile[Index].m_Type,
+				m_pTiles[Index].m_Index};
+
 			if((m_pEditor->m_AllowPlaceUnusedTiles || IsValidSpeedupTile(pSpeedupLayer->m_pTiles[y * pSpeedupLayer->m_Width + x].m_Index)) && pSpeedupLayer->m_pTiles[y * pSpeedupLayer->m_Width + x].m_Index != TILE_AIR)
 			{
 				if(m_pEditor->m_SpeedupAngle != pSpeedupLayer->m_SpeedupAngle || m_pEditor->m_SpeedupForce != pSpeedupLayer->m_SpeedupForce || m_pEditor->m_SpeedupMaxSpeed != pSpeedupLayer->m_SpeedupMaxSpeed)
 				{
-					m_pSpeedupTile[fy * m_Width + fx].m_Force = m_pEditor->m_SpeedupForce;
-					m_pSpeedupTile[fy * m_Width + fx].m_MaxSpeed = m_pEditor->m_SpeedupMaxSpeed;
-					m_pSpeedupTile[fy * m_Width + fx].m_Angle = m_pEditor->m_SpeedupAngle;
-					m_pSpeedupTile[fy * m_Width + fx].m_Type = pSpeedupLayer->m_pTiles[y * pSpeedupLayer->m_Width + x].m_Index;
-					m_pTiles[fy * m_Width + fx].m_Index = pSpeedupLayer->m_pTiles[y * pSpeedupLayer->m_Width + x].m_Index;
+					m_pSpeedupTile[Index].m_Force = m_pEditor->m_SpeedupForce;
+					m_pSpeedupTile[Index].m_MaxSpeed = m_pEditor->m_SpeedupMaxSpeed;
+					m_pSpeedupTile[Index].m_Angle = m_pEditor->m_SpeedupAngle;
+					m_pSpeedupTile[Index].m_Type = pSpeedupLayer->m_pTiles[y * pSpeedupLayer->m_Width + x].m_Index;
+					m_pTiles[Index].m_Index = pSpeedupLayer->m_pTiles[y * pSpeedupLayer->m_Width + x].m_Index;
 				}
 				else if(pSpeedupLayer->m_pSpeedupTile[y * pSpeedupLayer->m_Width + x].m_Force)
 				{
-					m_pSpeedupTile[fy * m_Width + fx].m_Force = pSpeedupLayer->m_pSpeedupTile[y * pSpeedupLayer->m_Width + x].m_Force;
-					m_pSpeedupTile[fy * m_Width + fx].m_Angle = pSpeedupLayer->m_pSpeedupTile[y * pSpeedupLayer->m_Width + x].m_Angle;
-					m_pSpeedupTile[fy * m_Width + fx].m_MaxSpeed = pSpeedupLayer->m_pSpeedupTile[y * pSpeedupLayer->m_Width + x].m_MaxSpeed;
-					m_pSpeedupTile[fy * m_Width + fx].m_Type = pSpeedupLayer->m_pTiles[y * pSpeedupLayer->m_Width + x].m_Index;
-					m_pTiles[fy * m_Width + fx].m_Index = pSpeedupLayer->m_pTiles[y * pSpeedupLayer->m_Width + x].m_Index;
+					m_pSpeedupTile[Index].m_Force = pSpeedupLayer->m_pSpeedupTile[y * pSpeedupLayer->m_Width + x].m_Force;
+					m_pSpeedupTile[Index].m_Angle = pSpeedupLayer->m_pSpeedupTile[y * pSpeedupLayer->m_Width + x].m_Angle;
+					m_pSpeedupTile[Index].m_MaxSpeed = pSpeedupLayer->m_pSpeedupTile[y * pSpeedupLayer->m_Width + x].m_MaxSpeed;
+					m_pSpeedupTile[Index].m_Type = pSpeedupLayer->m_pTiles[y * pSpeedupLayer->m_Width + x].m_Index;
+					m_pTiles[Index].m_Index = pSpeedupLayer->m_pTiles[y * pSpeedupLayer->m_Width + x].m_Index;
 				}
 				else if(m_pEditor->m_SpeedupForce)
 				{
-					m_pSpeedupTile[fy * m_Width + fx].m_Force = m_pEditor->m_SpeedupForce;
-					m_pSpeedupTile[fy * m_Width + fx].m_MaxSpeed = m_pEditor->m_SpeedupMaxSpeed;
-					m_pSpeedupTile[fy * m_Width + fx].m_Angle = m_pEditor->m_SpeedupAngle;
-					m_pSpeedupTile[fy * m_Width + fx].m_Type = pSpeedupLayer->m_pTiles[y * pSpeedupLayer->m_Width + x].m_Index;
-					m_pTiles[fy * m_Width + fx].m_Index = pSpeedupLayer->m_pTiles[y * pSpeedupLayer->m_Width + x].m_Index;
+					m_pSpeedupTile[Index].m_Force = m_pEditor->m_SpeedupForce;
+					m_pSpeedupTile[Index].m_MaxSpeed = m_pEditor->m_SpeedupMaxSpeed;
+					m_pSpeedupTile[Index].m_Angle = m_pEditor->m_SpeedupAngle;
+					m_pSpeedupTile[Index].m_Type = pSpeedupLayer->m_pTiles[y * pSpeedupLayer->m_Width + x].m_Index;
+					m_pTiles[Index].m_Index = pSpeedupLayer->m_pTiles[y * pSpeedupLayer->m_Width + x].m_Index;
 				}
 				else
 				{
-					m_pSpeedupTile[fy * m_Width + fx].m_Force = 0;
-					m_pSpeedupTile[fy * m_Width + fx].m_MaxSpeed = 0;
-					m_pSpeedupTile[fy * m_Width + fx].m_Angle = 0;
-					m_pSpeedupTile[fy * m_Width + fx].m_Type = 0;
-					m_pTiles[fy * m_Width + fx].m_Index = 0;
+					m_pSpeedupTile[Index].m_Force = 0;
+					m_pSpeedupTile[Index].m_MaxSpeed = 0;
+					m_pSpeedupTile[Index].m_Angle = 0;
+					m_pSpeedupTile[Index].m_Type = 0;
+					m_pTiles[Index].m_Index = 0;
 				}
 			}
 			else
 			{
-				m_pSpeedupTile[fy * m_Width + fx].m_Force = 0;
-				m_pSpeedupTile[fy * m_Width + fx].m_MaxSpeed = 0;
-				m_pSpeedupTile[fy * m_Width + fx].m_Angle = 0;
-				m_pSpeedupTile[fy * m_Width + fx].m_Type = 0;
-				m_pTiles[fy * m_Width + fx].m_Index = 0;
+				m_pSpeedupTile[Index].m_Force = 0;
+				m_pSpeedupTile[Index].m_MaxSpeed = 0;
+				m_pSpeedupTile[Index].m_Angle = 0;
+				m_pSpeedupTile[Index].m_Type = 0;
+				m_pTiles[Index].m_Index = 0;
 			}
+
+			SSpeedupTileStateChange::SData Current{
+				m_pSpeedupTile[Index].m_Force,
+				m_pSpeedupTile[Index].m_Angle,
+				m_pSpeedupTile[Index].m_MaxSpeed,
+				m_pSpeedupTile[Index].m_Type,
+				m_pTiles[Index].m_Index};
+
+			RecordStateChange(fx, fy, Previous, Current);
 		}
 	FlagModified(sx, sy, pSpeedupLayer->m_Width, pSpeedupLayer->m_Height);
 }
 
+void CLayerSpeedup::RecordStateChange(int x, int y, SSpeedupTileStateChange::SData Previous, SSpeedupTileStateChange::SData Current)
+{
+	if(!m_History[y][x].m_Changed)
+		m_History[y][x] = SSpeedupTileStateChange{true, Previous, Current};
+	else
+		m_History[y][x].m_Current = Current;
+}
+
 void CLayerSpeedup::BrushFlipX()
 {
 	CLayerTiles::BrushFlipX();
@@ -211,6 +246,13 @@ void CLayerSpeedup::FillSelection(bool Empty, std::shared_ptr<CLayer> pBrush, CU
 			const int SrcIndex = Empty ? 0 : (y * pLt->m_Width + x % pLt->m_Width) % (pLt->m_Width * pLt->m_Height);
 			const int TgtIndex = fy * m_Width + fx;
 
+			SSpeedupTileStateChange::SData Previous{
+				m_pSpeedupTile[TgtIndex].m_Force,
+				m_pSpeedupTile[TgtIndex].m_Angle,
+				m_pSpeedupTile[TgtIndex].m_MaxSpeed,
+				m_pSpeedupTile[TgtIndex].m_Type,
+				m_pTiles[TgtIndex].m_Index};
+
 			if(Empty || (!m_pEditor->m_AllowPlaceUnusedTiles && !IsValidSpeedupTile((pLt->m_pTiles[SrcIndex]).m_Index))) // no speed up tile chosen: reset
 			{
 				m_pTiles[TgtIndex].m_Index = 0;
@@ -240,7 +282,26 @@ void CLayerSpeedup::FillSelection(bool Empty, std::shared_ptr<CLayer> pBrush, CU
 						m_pSpeedupTile[TgtIndex].m_MaxSpeed = pLt->m_pSpeedupTile[SrcIndex].m_MaxSpeed;
 				}
 			}
+
+			SSpeedupTileStateChange::SData Current{
+				m_pSpeedupTile[TgtIndex].m_Force,
+				m_pSpeedupTile[TgtIndex].m_Angle,
+				m_pSpeedupTile[TgtIndex].m_MaxSpeed,
+				m_pSpeedupTile[TgtIndex].m_Type,
+				m_pTiles[TgtIndex].m_Index};
+
+			RecordStateChange(fx, fy, Previous, Current);
 		}
 	}
 	FlagModified(sx, sy, w, h);
 }
+
+std::shared_ptr<CLayer> CLayerSpeedup::Duplicate() const
+{
+	return std::make_shared<CLayerSpeedup>(*this);
+}
+
+const char *CLayerSpeedup::TypeName() const
+{
+	return "speedup";
+}

src/game/editor/mapitems/layer_speedup.h

@@ -3,10 +3,24 @@
 
 #include "layer_tiles.h"
 
+struct SSpeedupTileStateChange
+{
+	bool m_Changed;
+	struct SData
+	{
+		int m_Force;
+		int m_Angle;
+		int m_MaxSpeed;
+		int m_Type;
+		int m_Index;
+	} m_Previous, m_Current;
+};
+
 class CLayerSpeedup : public CLayerTiles
 {
 public:
 	CLayerSpeedup(CEditor *pEditor, int w, int h);
+	CLayerSpeedup(const CLayerSpeedup &Other);
 	~CLayerSpeedup();
 
 	CSpeedupTile *m_pSpeedupTile;
@@ -22,6 +36,19 @@ public:
 	void BrushFlipY() override;
 	void BrushRotate(float Amount) override;
 	void FillSelection(bool Empty, std::shared_ptr<CLayer> pBrush, CUIRect Rect) override;
+
+	EditorTileStateChangeHistory<SSpeedupTileStateChange> m_History;
+	void ClearHistory() override
+	{
+		CLayerTiles::ClearHistory();
+		m_History.clear();
+	}
+
+	std::shared_ptr<CLayer> Duplicate() const override;
+	const char *TypeName() const override;
+
+private:
+	void RecordStateChange(int x, int y, SSpeedupTileStateChange::SData Previous, SSpeedupTileStateChange::SData Current);
 };
 
 #endif

src/game/editor/mapitems/layer_switch.cpp

@@ -12,6 +12,16 @@ CLayerSwitch::CLayerSwitch(CEditor *pEditor, int w, int h) :
 	mem_zero(m_pSwitchTile, (size_t)w * h * sizeof(CSwitchTile));
 }
 
+CLayerSwitch::CLayerSwitch(const CLayerSwitch &Other) :
+	CLayerTiles(Other)
+{
+	str_copy(m_aName, "Switch copy");
+	m_Switch = 1;
+
+	m_pSwitchTile = new CSwitchTile[m_Width * m_Height];
+	mem_copy(m_pSwitchTile, Other.m_pSwitchTile, (size_t)m_Width * m_Height * sizeof(CSwitchTile));
+}
+
 CLayerSwitch::~CLayerSwitch()
 {
 	delete[] m_pSwitchTile;
@@ -83,54 +93,79 @@ void CLayerSwitch::BrushDraw(std::shared_ptr<CLayer> pBrush, float wx, float wy)
 			if(!Destructive && GetTile(fx, fy).m_Index)
 				continue;
 
+			int Index = fy * m_Width + fx;
+			SSwitchTileStateChange::SData Previous{
+				m_pSwitchTile[Index].m_Number,
+				m_pSwitchTile[Index].m_Type,
+				m_pSwitchTile[Index].m_Flags,
+				m_pSwitchTile[Index].m_Delay,
+				m_pTiles[Index].m_Index};
+
 			if((m_pEditor->m_AllowPlaceUnusedTiles || IsValidSwitchTile(pSwitchLayer->m_pTiles[y * pSwitchLayer->m_Width + x].m_Index)) && pSwitchLayer->m_pTiles[y * pSwitchLayer->m_Width + x].m_Index != TILE_AIR)
 			{
 				if(m_pEditor->m_SwitchNum != pSwitchLayer->m_SwitchNumber || m_pEditor->m_SwitchDelay != pSwitchLayer->m_SwitchDelay)
 				{
-					m_pSwitchTile[fy * m_Width + fx].m_Number = m_pEditor->m_SwitchNum;
-					m_pSwitchTile[fy * m_Width + fx].m_Delay = m_pEditor->m_SwitchDelay;
+					m_pSwitchTile[Index].m_Number = m_pEditor->m_SwitchNum;
+					m_pSwitchTile[Index].m_Delay = m_pEditor->m_SwitchDelay;
 				}
 				else if(pSwitchLayer->m_pSwitchTile[y * pSwitchLayer->m_Width + x].m_Number)
 				{
-					m_pSwitchTile[fy * m_Width + fx].m_Number = pSwitchLayer->m_pSwitchTile[y * pSwitchLayer->m_Width + x].m_Number;
-					m_pSwitchTile[fy * m_Width + fx].m_Delay = pSwitchLayer->m_pSwitchTile[y * pSwitchLayer->m_Width + x].m_Delay;
+					m_pSwitchTile[Index].m_Number = pSwitchLayer->m_pSwitchTile[y * pSwitchLayer->m_Width + x].m_Number;
+					m_pSwitchTile[Index].m_Delay = pSwitchLayer->m_pSwitchTile[y * pSwitchLayer->m_Width + x].m_Delay;
 				}
 				else
 				{
-					m_pSwitchTile[fy * m_Width + fx].m_Number = m_pEditor->m_SwitchNum;
-					m_pSwitchTile[fy * m_Width + fx].m_Delay = m_pEditor->m_SwitchDelay;
+					m_pSwitchTile[Index].m_Number = m_pEditor->m_SwitchNum;
+					m_pSwitchTile[Index].m_Delay = m_pEditor->m_SwitchDelay;
 				}
 
-				m_pSwitchTile[fy * m_Width + fx].m_Type = pSwitchLayer->m_pTiles[y * pSwitchLayer->m_Width + x].m_Index;
-				m_pSwitchTile[fy * m_Width + fx].m_Flags = pSwitchLayer->m_pTiles[y * pSwitchLayer->m_Width + x].m_Flags;
-				m_pTiles[fy * m_Width + fx].m_Index = pSwitchLayer->m_pTiles[y * pSwitchLayer->m_Width + x].m_Index;
-				m_pTiles[fy * m_Width + fx].m_Flags = pSwitchLayer->m_pTiles[y * pSwitchLayer->m_Width + x].m_Flags;
+				m_pSwitchTile[Index].m_Type = pSwitchLayer->m_pTiles[y * pSwitchLayer->m_Width + x].m_Index;
+				m_pSwitchTile[Index].m_Flags = pSwitchLayer->m_pTiles[y * pSwitchLayer->m_Width + x].m_Flags;
+				m_pTiles[Index].m_Index = pSwitchLayer->m_pTiles[y * pSwitchLayer->m_Width + x].m_Index;
+				m_pTiles[Index].m_Flags = pSwitchLayer->m_pTiles[y * pSwitchLayer->m_Width + x].m_Flags;
 
 				if(!IsSwitchTileFlagsUsed(pSwitchLayer->m_pTiles[y * pSwitchLayer->m_Width + x].m_Index))
 				{
-					m_pSwitchTile[fy * m_Width + fx].m_Flags = 0;
+					m_pSwitchTile[Index].m_Flags = 0;
 				}
 				if(!IsSwitchTileNumberUsed(pSwitchLayer->m_pTiles[y * pSwitchLayer->m_Width + x].m_Index))
 				{
-					m_pSwitchTile[fy * m_Width + fx].m_Number = 0;
+					m_pSwitchTile[Index].m_Number = 0;
 				}
 				if(!IsSwitchTileDelayUsed(pSwitchLayer->m_pTiles[y * pSwitchLayer->m_Width + x].m_Index))
 				{
-					m_pSwitchTile[fy * m_Width + fx].m_Delay = 0;
+					m_pSwitchTile[Index].m_Delay = 0;
 				}
 			}
 			else
 			{
-				m_pSwitchTile[fy * m_Width + fx].m_Number = 0;
-				m_pSwitchTile[fy * m_Width + fx].m_Type = 0;
-				m_pSwitchTile[fy * m_Width + fx].m_Flags = 0;
-				m_pSwitchTile[fy * m_Width + fx].m_Delay = 0;
-				m_pTiles[fy * m_Width + fx].m_Index = 0;
+				m_pSwitchTile[Index].m_Number = 0;
+				m_pSwitchTile[Index].m_Type = 0;
+				m_pSwitchTile[Index].m_Flags = 0;
+				m_pSwitchTile[Index].m_Delay = 0;
+				m_pTiles[Index].m_Index = 0;
 			}
+
+			SSwitchTileStateChange::SData Current{
+				m_pSwitchTile[Index].m_Number,
+				m_pSwitchTile[Index].m_Type,
+				m_pSwitchTile[Index].m_Flags,
+				m_pSwitchTile[Index].m_Delay,
+				m_pTiles[Index].m_Index};
+
+			RecordStateChange(fx, fy, Previous, Current);
 		}
 	FlagModified(sx, sy, pSwitchLayer->m_Width, pSwitchLayer->m_Height);
 }
 
+void CLayerSwitch::RecordStateChange(int x, int y, SSwitchTileStateChange::SData Previous, SSwitchTileStateChange::SData Current)
+{
+	if(!m_History[y][x].m_Changed)
+		m_History[y][x] = SSwitchTileStateChange{true, Previous, Current};
+	else
+		m_History[y][x].m_Current = Current;
+}
+
 void CLayerSwitch::BrushFlipX()
 {
 	CLayerTiles::BrushFlipX();
@@ -217,6 +252,13 @@ void CLayerSwitch::FillSelection(bool Empty, std::shared_ptr<CLayer> pBrush, CUI
 			const int SrcIndex = Empty ? 0 : (y * pLt->m_Width + x % pLt->m_Width) % (pLt->m_Width * pLt->m_Height);
 			const int TgtIndex = fy * m_Width + fx;
 
+			SSwitchTileStateChange::SData Previous{
+				m_pSwitchTile[TgtIndex].m_Number,
+				m_pSwitchTile[TgtIndex].m_Type,
+				m_pSwitchTile[TgtIndex].m_Flags,
+				m_pSwitchTile[TgtIndex].m_Delay,
+				m_pTiles[TgtIndex].m_Index};
+
 			if(Empty || (!m_pEditor->m_AllowPlaceUnusedTiles && !IsValidSwitchTile((pLt->m_pTiles[SrcIndex]).m_Index)))
 			{
 				m_pTiles[TgtIndex].m_Index = 0;
@@ -250,6 +292,15 @@ void CLayerSwitch::FillSelection(bool Empty, std::shared_ptr<CLayer> pBrush, CUI
 						m_pSwitchTile[TgtIndex].m_Flags = pLt->m_pSwitchTile[SrcIndex].m_Flags;
 				}
 			}
+
+			SSwitchTileStateChange::SData Current{
+				m_pSwitchTile[TgtIndex].m_Number,
+				m_pSwitchTile[TgtIndex].m_Type,
+				m_pSwitchTile[TgtIndex].m_Flags,
+				m_pSwitchTile[TgtIndex].m_Delay,
+				m_pTiles[TgtIndex].m_Index};
+
+			RecordStateChange(fx, fy, Previous, Current);
 		}
 	}
 	FlagModified(sx, sy, w, h);
@@ -270,3 +321,13 @@ bool CLayerSwitch::ContainsElementWithId(int Id)
 
 	return false;
 }
+
+std::shared_ptr<CLayer> CLayerSwitch::Duplicate() const
+{
+	return std::make_shared<CLayerSwitch>(*this);
+}
+
+const char *CLayerSwitch::TypeName() const
+{
+	return "switch";
+}

src/game/editor/mapitems/layer_switch.h

@@ -3,10 +3,24 @@
 
 #include "layer_tiles.h"
 
+struct SSwitchTileStateChange
+{
+	bool m_Changed;
+	struct SData
+	{
+		int m_Number;
+		int m_Type;
+		int m_Flags;
+		int m_Delay;
+		int m_Index;
+	} m_Previous, m_Current;
+};
+
 class CLayerSwitch : public CLayerTiles
 {
 public:
 	CLayerSwitch(CEditor *pEditor, int w, int h);
+	CLayerSwitch(const CLayerSwitch &Other);
 	~CLayerSwitch();
 
 	CSwitchTile *m_pSwitchTile;
@@ -22,6 +36,19 @@ public:
 	void BrushRotate(float Amount) override;
 	void FillSelection(bool Empty, std::shared_ptr<CLayer> pBrush, CUIRect Rect) override;
 	virtual bool ContainsElementWithId(int Id);
+
+	EditorTileStateChangeHistory<SSwitchTileStateChange> m_History;
+	inline void ClearHistory() override
+	{
+		CLayerTiles::ClearHistory();
+		m_History.clear();
+	}
+
+	std::shared_ptr<CLayer> Duplicate() const override;
+	const char *TypeName() const override;
+
+private:
+	void RecordStateChange(int x, int y, SSwitchTileStateChange::SData Previous, SSwitchTileStateChange::SData Current);
 };
 
 #endif

src/game/editor/mapitems/layer_tele.cpp

@@ -12,6 +12,16 @@ CLayerTele::CLayerTele(CEditor *pEditor, int w, int h) :
 	mem_zero(m_pTeleTile, (size_t)w * h * sizeof(CTeleTile));
 }
 
+CLayerTele::CLayerTele(const CLayerTele &Other) :
+	CLayerTiles(Other)
+{
+	str_copy(m_aName, "Tele copy");
+	m_Tele = 1;
+
+	m_pTeleTile = new CTeleTile[m_Width * m_Height];
+	mem_copy(m_pTeleTile, Other.m_pTeleTile, (size_t)m_Width * m_Height * sizeof(CTeleTile));
+}
+
 CLayerTele::~CLayerTele()
 {
 	delete[] m_pTeleTile;
@@ -80,48 +90,80 @@ void CLayerTele::BrushDraw(std::shared_ptr<CLayer> pBrush, float wx, float wy)
 			if(!Destructive && GetTile(fx, fy).m_Index)
 				continue;
 
+			int Index = fy * m_Width + fx;
+			STeleTileStateChange::SData Previous{
+				m_pTeleTile[Index].m_Number,
+				m_pTeleTile[Index].m_Type,
+				m_pTiles[Index].m_Index};
+
 			if((m_pEditor->m_AllowPlaceUnusedTiles || IsValidTeleTile(pTeleLayer->m_pTiles[y * pTeleLayer->m_Width + x].m_Index)) && pTeleLayer->m_pTiles[y * pTeleLayer->m_Width + x].m_Index != TILE_AIR)
 			{
 				if(!IsTeleTileNumberUsed(pTeleLayer->m_pTiles[y * pTeleLayer->m_Width + x].m_Index))
 				{
 					// Tele tile number is unused. Set a known value which is not 0,
 					// as tiles with number 0 would be ignored by previous versions.
-					m_pTeleTile[fy * m_Width + fx].m_Number = 255;
+					m_pTeleTile[Index].m_Number = 255;
 				}
 				else if(m_pEditor->m_TeleNumber != pTeleLayer->m_TeleNum)
 				{
-					m_pTeleTile[fy * m_Width + fx].m_Number = m_pEditor->m_TeleNumber;
+					m_pTeleTile[Index].m_Number = m_pEditor->m_TeleNumber;
 				}
 				else if(pTeleLayer->m_pTeleTile[y * pTeleLayer->m_Width + x].m_Number)
 				{
-					m_pTeleTile[fy * m_Width + fx].m_Number = pTeleLayer->m_pTeleTile[y * pTeleLayer->m_Width + x].m_Number;
+					m_pTeleTile[Index].m_Number = pTeleLayer->m_pTeleTile[y * pTeleLayer->m_Width + x].m_Number;
 				}
 				else
 				{
 					if(!m_pEditor->m_TeleNumber)
 					{
-						m_pTeleTile[fy * m_Width + fx].m_Number = 0;
-						m_pTeleTile[fy * m_Width + fx].m_Type = 0;
-						m_pTiles[fy * m_Width + fx].m_Index = 0;
+						m_pTeleTile[Index].m_Number = 0;
+						m_pTeleTile[Index].m_Type = 0;
+						m_pTiles[Index].m_Index = 0;
+
+						STeleTileStateChange::SData Current{
+							m_pTeleTile[Index].m_Number,
+							m_pTeleTile[Index].m_Type,
+							m_pTiles[Index].m_Index};
+
+						RecordStateChange(fx, fy, Previous, Current);
 						continue;
 					}
 					else
-						m_pTeleTile[fy * m_Width + fx].m_Number = m_pEditor->m_TeleNumber;
+					{
+						m_pTeleTile[Index].m_Number = m_pEditor->m_TeleNumber;
+					}
 				}
 
-				m_pTeleTile[fy * m_Width + fx].m_Type = pTeleLayer->m_pTiles[y * pTeleLayer->m_Width + x].m_Index;
-				m_pTiles[fy * m_Width + fx].m_Index = pTeleLayer->m_pTiles[y * pTeleLayer->m_Width + x].m_Index;
+				m_pTeleTile[Index].m_Type = pTeleLayer->m_pTiles[y * pTeleLayer->m_Width + x].m_Index;
+				m_pTiles[Index].m_Index = pTeleLayer->m_pTiles[y * pTeleLayer->m_Width + x].m_Index;
 			}
 			else
 			{
-				m_pTeleTile[fy * m_Width + fx].m_Number = 0;
-				m_pTeleTile[fy * m_Width + fx].m_Type = 0;
-				m_pTiles[fy * m_Width + fx].m_Index = 0;
+				m_pTeleTile[Index].m_Number = 0;
+				m_pTeleTile[Index].m_Type = 0;
+				m_pTiles[Index].m_Index = 0;
 			}
+
+			STeleTileStateChange::SData Current{
+				m_pTeleTile[Index].m_Number,
+				m_pTeleTile[Index].m_Type,
+				m_pTiles[Index].m_Index};
+
+			RecordStateChange(fx, fy, Previous, Current);
 		}
 	FlagModified(sx, sy, pTeleLayer->m_Width, pTeleLayer->m_Height);
 }
 
+void CLayerTele::RecordStateChange(int x, int y, STeleTileStateChange::SData Previous, STeleTileStateChange::SData Current)
+{
+	if(!m_History[y][x].m_Changed)
+		m_History[y][x] = STeleTileStateChange{true, Previous, Current};
+	else
+	{
+		m_History[y][x].m_Current = Current;
+	}
+}
+
 void CLayerTele::BrushFlipX()
 {
 	CLayerTiles::BrushFlipX();
@@ -202,6 +244,11 @@ void CLayerTele::FillSelection(bool Empty, std::shared_ptr<CLayer> pBrush, CUIRe
 			const int SrcIndex = Empty ? 0 : (y * pLt->m_Width + x % pLt->m_Width) % (pLt->m_Width * pLt->m_Height);
 			const int TgtIndex = fy * m_Width + fx;
 
+			STeleTileStateChange::SData Previous{
+				m_pTeleTile[TgtIndex].m_Number,
+				m_pTeleTile[TgtIndex].m_Type,
+				m_pTiles[TgtIndex].m_Index};
+
 			if(Empty || (!m_pEditor->m_AllowPlaceUnusedTiles && !IsValidTeleTile((pLt->m_pTiles[SrcIndex]).m_Index)))
 			{
 				m_pTiles[TgtIndex].m_Index = 0;
@@ -227,6 +274,13 @@ void CLayerTele::FillSelection(bool Empty, std::shared_ptr<CLayer> pBrush, CUIRe
 						m_pTeleTile[TgtIndex].m_Number = pLt->m_pTeleTile[SrcIndex].m_Number;
 				}
 			}
+
+			STeleTileStateChange::SData Current{
+				m_pTeleTile[TgtIndex].m_Number,
+				m_pTeleTile[TgtIndex].m_Type,
+				m_pTiles[TgtIndex].m_Index};
+
+			RecordStateChange(fx, fy, Previous, Current);
 		}
 	}
 	FlagModified(sx, sy, w, h);
@@ -247,3 +301,13 @@ bool CLayerTele::ContainsElementWithId(int Id)
 
 	return false;
 }
+
+std::shared_ptr<CLayer> CLayerTele::Duplicate() const
+{
+	return std::make_shared<CLayerTele>(*this);
+}
+
+const char *CLayerTele::TypeName() const
+{
+	return "tele";
+}

src/game/editor/mapitems/layer_tele.h

@@ -3,10 +3,22 @@
 
 #include "layer_tiles.h"
 
+struct STeleTileStateChange
+{
+	bool m_Changed;
+	struct SData
+	{
+		int m_Number;
+		int m_Type;
+		int m_Index;
+	} m_Previous, m_Current;
+};
+
 class CLayerTele : public CLayerTiles
 {
 public:
 	CLayerTele(CEditor *pEditor, int w, int h);
+	CLayerTele(const CLayerTele &Other);
 	~CLayerTele();
 
 	CTeleTile *m_pTeleTile;
@@ -21,6 +33,21 @@ public:
 	void BrushRotate(float Amount) override;
 	void FillSelection(bool Empty, std::shared_ptr<CLayer> pBrush, CUIRect Rect) override;
 	virtual bool ContainsElementWithId(int Id);
+
+	EditorTileStateChangeHistory<STeleTileStateChange> m_History;
+	inline void ClearHistory() override
+	{
+		CLayerTiles::ClearHistory();
+		m_History.clear();
+	}
+
+	std::shared_ptr<CLayer> Duplicate() const override;
+	const char *TypeName() const override;
+
+private:
+	void RecordStateChange(int x, int y, STeleTileStateChange::SData Previous, STeleTileStateChange::SData Current);
+
+	friend class CLayerTiles;
 };
 
 #endif

src/game/editor/mapitems/layer_tiles.cpp

@@ -2,10 +2,13 @@
 /* If you are missing that file, acquire a complete release at teeworlds.com.                */
 #include "layer_tiles.h"
 
-#include <game/editor/editor.h>
-
 #include <engine/keys.h>
 #include <engine/shared/map.h>
+#include <game/editor/editor.h>
+#include <game/editor/editor_actions.h>
+
+#include <iterator>
+#include <numeric>
 
 #include "image.h"
 
@@ -75,10 +78,25 @@ CTile CLayerTiles::GetTile(int x, int y)
 }
 
 void CLayerTiles::SetTile(int x, int y, CTile Tile)
+{
+	auto CurrentTile = m_pTiles[y * m_Width + x];
+	SetTileIgnoreHistory(x, y, Tile);
+	RecordStateChange(x, y, CurrentTile, Tile);
+}
+
+void CLayerTiles::SetTileIgnoreHistory(int x, int y, CTile Tile)
 {
 	m_pTiles[y * m_Width + x] = Tile;
 }
 
+void CLayerTiles::RecordStateChange(int x, int y, CTile Previous, CTile Tile)
+{
+	if(!m_TilesHistory[y][x].m_Changed)
+		m_TilesHistory[y][x] = STileStateChange{true, Previous, Tile};
+	else
+		m_TilesHistory[y][x].m_Current = Tile;
+}
+
 void CLayerTiles::PrepareForSave()
 {
 	for(int y = 0; y < m_Height; y++)
@@ -579,6 +597,11 @@ std::shared_ptr<CLayer> CLayerTiles::Duplicate() const
 	return std::make_shared<CLayerTiles>(*this);
 }
 
+const char *CLayerTiles::TypeName() const
+{
+	return "tiles";
+}
+
 void CLayerTiles::Resize(int NewW, int NewH)
 {
 	CTile *pNewData = new CTile[NewW * NewH];
@@ -678,7 +701,6 @@ CUI::EPopupMenuFunctionResult CLayerTiles::RenderProperties(CUIRect *pToolBox)
 		static int s_GameTilesButton = 0;
 		if(m_pEditor->DoButton_Editor(&s_GameTilesButton, "Game tiles", 0, &Button, 0, "Constructs game tiles from this layer"))
 			m_pEditor->PopupSelectGametileOpInvoke(m_pEditor->UI()->MouseX(), m_pEditor->UI()->MouseY());
-
 		int Result = m_pEditor->PopupSelectGameTileOpResult();
 		switch(Result)
 		{
@@ -717,17 +739,49 @@ CUI::EPopupMenuFunctionResult CLayerTiles::RenderProperties(CUIRect *pToolBox)
 			const int OffsetX = -pGroup->m_OffsetX / 32;
 			const int OffsetY = -pGroup->m_OffsetY / 32;
 
+			static const char *s_apGametileOpNames[] = {
+				"Air",
+				"Hookable",
+				"Death",
+				"Unhookable",
+				"Hookthrough",
+				"Freeze",
+				"Unfreeze",
+				"Deep Freeze",
+				"Deep Unfreeze",
+				"Blue Check-Tele",
+				"Red Check-Tele",
+				"Live Freeze",
+				"Live Unfreeze",
+			};
+
+			std::vector<std::shared_ptr<IEditorAction>> vpActions;
+			std::shared_ptr<CLayerTiles> pGLayer = m_pEditor->m_Map.m_pGameLayer;
+			int GameLayerIndex = std::find(m_pEditor->m_Map.m_pGameGroup->m_vpLayers.begin(), m_pEditor->m_Map.m_pGameGroup->m_vpLayers.end(), pGLayer) - m_pEditor->m_Map.m_pGameGroup->m_vpLayers.begin();
+
 			if(Result != TILE_TELECHECKIN && Result != TILE_TELECHECKINEVIL)
 			{
-				std::shared_ptr<CLayerTiles> pGLayer = m_pEditor->m_Map.m_pGameLayer;
-
 				if(pGLayer->m_Width < m_Width + OffsetX || pGLayer->m_Height < m_Height + OffsetY)
 				{
+					std::map<int, std::shared_ptr<CLayer>> savedLayers;
+					savedLayers[LAYERTYPE_TILES] = pGLayer->Duplicate();
+					savedLayers[LAYERTYPE_GAME] = savedLayers[LAYERTYPE_TILES];
+
+					int PrevW = pGLayer->m_Width;
+					int PrevH = pGLayer->m_Height;
 					const int NewW = pGLayer->m_Width < m_Width + OffsetX ? m_Width + OffsetX : pGLayer->m_Width;
 					const int NewH = pGLayer->m_Height < m_Height + OffsetY ? m_Height + OffsetY : pGLayer->m_Height;
 					pGLayer->Resize(NewW, NewH);
+					vpActions.push_back(std::make_shared<CEditorActionEditLayerTilesProp>(m_pEditor, m_pEditor->m_SelectedGroup, GameLayerIndex, ETilesProp::PROP_WIDTH, PrevW, NewW));
+					const std::shared_ptr<CEditorActionEditLayerTilesProp> &Action1 = std::static_pointer_cast<CEditorActionEditLayerTilesProp>(vpActions[vpActions.size() - 1]);
+					vpActions.push_back(std::make_shared<CEditorActionEditLayerTilesProp>(m_pEditor, m_pEditor->m_SelectedGroup, GameLayerIndex, ETilesProp::PROP_HEIGHT, PrevH, NewH));
+					const std::shared_ptr<CEditorActionEditLayerTilesProp> &Action2 = std::static_pointer_cast<CEditorActionEditLayerTilesProp>(vpActions[vpActions.size() - 1]);
+
+					Action1->SetSavedLayers(savedLayers);
+					Action2->SetSavedLayers(savedLayers);
 				}
 
+				int Changes = 0;
 				for(int y = OffsetY < 0 ? -OffsetY : 0; y < m_Height; y++)
 				{
 					for(int x = OffsetX < 0 ? -OffsetX : 0; x < m_Width; x++)
@@ -736,40 +790,111 @@ CUI::EPopupMenuFunctionResult CLayerTiles::RenderProperties(CUIRect *pToolBox)
 						{
 							const CTile ResultTile = {(unsigned char)Result};
 							pGLayer->SetTile(x + OffsetX, y + OffsetY, ResultTile);
+							Changes++;
 						}
 					}
 				}
+
+				vpActions.push_back(std::make_shared<CEditorBrushDrawAction>(m_pEditor, m_pEditor->m_SelectedGroup));
+				char aDisplay[256];
+				str_format(aDisplay, sizeof(aDisplay), "Construct '%s' game tiles (x%d)", s_apGametileOpNames[Result], Changes);
+				m_pEditor->m_EditorHistory.RecordAction(std::make_shared<CEditorActionBulk>(m_pEditor, vpActions, aDisplay, true));
 			}
 			else
 			{
 				if(!m_pEditor->m_Map.m_pTeleLayer)
 				{
-					std::shared_ptr<CLayer> pLayer = std::make_shared<CLayerTele>(m_pEditor, m_Width, m_Height);
+					std::shared_ptr<CLayerTele> pLayer = std::make_shared<CLayerTele>(m_pEditor, m_Width, m_Height);
 					m_pEditor->m_Map.MakeTeleLayer(pLayer);
 					m_pEditor->m_Map.m_pGameGroup->AddLayer(pLayer);
+
+					vpActions.push_back(std::make_shared<CEditorActionAddLayer>(m_pEditor, m_pEditor->m_SelectedGroup, m_pEditor->m_Map.m_pGameGroup->m_vpLayers.size() - 1));
+
+					if(m_Width != pGLayer->m_Width || m_Height > pGLayer->m_Height)
+					{
+						std::map<int, std::shared_ptr<CLayer>> savedLayers;
+						savedLayers[LAYERTYPE_TILES] = pGLayer->Duplicate();
+						savedLayers[LAYERTYPE_GAME] = savedLayers[LAYERTYPE_TILES];
+
+						int NewW = pGLayer->m_Width;
+						int NewH = pGLayer->m_Height;
+						if(m_Width > pGLayer->m_Width)
+						{
+							NewW = m_Width;
+						}
+						if(m_Height > pGLayer->m_Height)
+						{
+							NewH = m_Height;
+						}
+
+						int PrevW = pGLayer->m_Width;
+						int PrevH = pGLayer->m_Height;
+						pLayer->Resize(NewW, NewH);
+						vpActions.push_back(std::make_shared<CEditorActionEditLayerTilesProp>(m_pEditor, m_pEditor->m_SelectedGroup, GameLayerIndex, ETilesProp::PROP_WIDTH, PrevW, NewW));
+						const std::shared_ptr<CEditorActionEditLayerTilesProp> &Action1 = std::static_pointer_cast<CEditorActionEditLayerTilesProp>(vpActions[vpActions.size() - 1]);
+						vpActions.push_back(std::make_shared<CEditorActionEditLayerTilesProp>(m_pEditor, m_pEditor->m_SelectedGroup, GameLayerIndex, ETilesProp::PROP_HEIGHT, PrevH, NewH));
+						const std::shared_ptr<CEditorActionEditLayerTilesProp> &Action2 = std::static_pointer_cast<CEditorActionEditLayerTilesProp>(vpActions[vpActions.size() - 1]);
+
+						Action1->SetSavedLayers(savedLayers);
+						Action2->SetSavedLayers(savedLayers);
+					}
 				}
 
 				std::shared_ptr<CLayerTele> pTLayer = m_pEditor->m_Map.m_pTeleLayer;
+				int TeleLayerIndex = std::find(m_pEditor->m_Map.m_pGameGroup->m_vpLayers.begin(), m_pEditor->m_Map.m_pGameGroup->m_vpLayers.end(), pTLayer) - m_pEditor->m_Map.m_pGameGroup->m_vpLayers.begin();
 
 				if(pTLayer->m_Width < m_Width + OffsetX || pTLayer->m_Height < m_Height + OffsetY)
 				{
+					std::map<int, std::shared_ptr<CLayer>> savedLayers;
+					savedLayers[LAYERTYPE_TILES] = pTLayer->Duplicate();
+					savedLayers[LAYERTYPE_TELE] = savedLayers[LAYERTYPE_TILES];
+
+					int PrevW = pTLayer->m_Width;
+					int PrevH = pTLayer->m_Height;
 					int NewW = pTLayer->m_Width < m_Width + OffsetX ? m_Width + OffsetX : pTLayer->m_Width;
 					int NewH = pTLayer->m_Height < m_Height + OffsetY ? m_Height + OffsetY : pTLayer->m_Height;
 					pTLayer->Resize(NewW, NewH);
+					std::shared_ptr<CEditorActionEditLayerTilesProp> Action1, Action2;
+					vpActions.push_back(Action1 = std::make_shared<CEditorActionEditLayerTilesProp>(m_pEditor, m_pEditor->m_SelectedGroup, TeleLayerIndex, ETilesProp::PROP_WIDTH, PrevW, NewW));
+					vpActions.push_back(Action2 = std::make_shared<CEditorActionEditLayerTilesProp>(m_pEditor, m_pEditor->m_SelectedGroup, TeleLayerIndex, ETilesProp::PROP_HEIGHT, PrevH, NewH));
+
+					Action1->SetSavedLayers(savedLayers);
+					Action2->SetSavedLayers(savedLayers);
 				}
 
+				int Changes = 0;
 				for(int y = OffsetY < 0 ? -OffsetY : 0; y < m_Height; y++)
 				{
 					for(int x = OffsetX < 0 ? -OffsetX : 0; x < m_Width; x++)
 					{
 						if(GetTile(x, y).m_Index)
 						{
-							pTLayer->m_pTiles[(y + OffsetY) * pTLayer->m_Width + x + OffsetX].m_Index = TILE_AIR + Result;
-							pTLayer->m_pTeleTile[(y + OffsetY) * pTLayer->m_Width + x + OffsetX].m_Number = 1;
-							pTLayer->m_pTeleTile[(y + OffsetY) * pTLayer->m_Width + x + OffsetX].m_Type = TILE_AIR + Result;
+							auto TileIndex = (y + OffsetY) * pTLayer->m_Width + x + OffsetX;
+							Changes++;
+
+							STeleTileStateChange::SData Previous{
+								pTLayer->m_pTeleTile[TileIndex].m_Number,
+								pTLayer->m_pTeleTile[TileIndex].m_Type,
+								pTLayer->m_pTiles[TileIndex].m_Index};
+
+							pTLayer->m_pTiles[TileIndex].m_Index = TILE_AIR + Result;
+							pTLayer->m_pTeleTile[TileIndex].m_Number = 1;
+							pTLayer->m_pTeleTile[TileIndex].m_Type = TILE_AIR + Result;
+
+							STeleTileStateChange::SData Current{
+								pTLayer->m_pTeleTile[TileIndex].m_Number,
+								pTLayer->m_pTeleTile[TileIndex].m_Type,
+								pTLayer->m_pTiles[TileIndex].m_Index};
+
+							pTLayer->RecordStateChange(x, y, Previous, Current);
 						}
 					}
 				}
+
+				vpActions.push_back(std::make_shared<CEditorBrushDrawAction>(m_pEditor, m_pEditor->m_SelectedGroup));
+				char aDisplay[256];
+				str_format(aDisplay, sizeof(aDisplay), "Construct 'tele' game tiles (x%d)", Changes);
+				m_pEditor->m_EditorHistory.RecordAction(std::make_shared<CEditorActionBulk>(m_pEditor, vpActions, aDisplay, true));
 			}
 		}
 	}
@@ -790,6 +915,12 @@ CUI::EPopupMenuFunctionResult CLayerTiles::RenderProperties(CUIRect *pToolBox)
 				{
 					m_AutoAutoMap = !m_AutoAutoMap;
 					FlagModified(0, 0, m_Width, m_Height);
+					if(!m_TilesHistory.empty()) // Sometimes pressing that button causes the automap to run so we should be able to undo that
+					{
+						// record undo
+						m_pEditor->m_EditorHistory.RecordAction(std::make_shared<CEditorActionAutoMap>(m_pEditor, m_pEditor->m_SelectedGroup, m_pEditor->m_vSelectedLayers[0], m_TilesHistory));
+						ClearHistory();
+					}
 				}
 			}
 
@@ -797,31 +928,15 @@ CUI::EPopupMenuFunctionResult CLayerTiles::RenderProperties(CUIRect *pToolBox)
 			if(m_pEditor->DoButton_Editor(&s_AutoMapperButton, "Automap", 0, &Button, 0, "Run the automapper"))
 			{
 				m_pEditor->m_Map.m_vpImages[m_Image]->m_AutoMapper.Proceed(this, m_AutoMapperConfig, m_Seed);
+				// record undo
+				m_pEditor->m_EditorHistory.RecordAction(std::make_shared<CEditorActionAutoMap>(m_pEditor, m_pEditor->m_SelectedGroup, m_pEditor->m_vSelectedLayers[0], m_TilesHistory));
+				ClearHistory();
 				return CUI::POPUP_CLOSE_CURRENT;
 			}
 		}
 	}
 
-	enum
-	{
-		PROP_WIDTH = 0,
-		PROP_HEIGHT,
-		PROP_SHIFT,
-		PROP_SHIFT_BY,
-		PROP_IMAGE,
-		PROP_COLOR,
-		PROP_COLOR_ENV,
-		PROP_COLOR_ENV_OFFSET,
-		PROP_AUTOMAPPER,
-		PROP_SEED,
-		NUM_PROPS,
-	};
-
-	int Color = 0;
-	Color |= m_Color.r << 24;
-	Color |= m_Color.g << 16;
-	Color |= m_Color.b << 8;
-	Color |= m_Color.a;
+	int Color = PackColor(m_Color);
 
 	CProperty aProps[] = {
 		{"Width", m_Width, PROPTYPE_INT_SCROLL, 1, 100000},
@@ -839,21 +954,24 @@ CUI::EPopupMenuFunctionResult CLayerTiles::RenderProperties(CUIRect *pToolBox)
 
 	if(EntitiesLayer) // remove the image and color properties if this is a game layer
 	{
-		aProps[PROP_IMAGE].m_pName = nullptr;
-		aProps[PROP_COLOR].m_pName = nullptr;
-		aProps[PROP_AUTOMAPPER].m_pName = nullptr;
+		aProps[(int)ETilesProp::PROP_IMAGE].m_pName = nullptr;
+		aProps[(int)ETilesProp::PROP_COLOR].m_pName = nullptr;
+		aProps[(int)ETilesProp::PROP_AUTOMAPPER].m_pName = nullptr;
 	}
 	if(m_Image == -1)
 	{
-		aProps[PROP_AUTOMAPPER].m_pName = nullptr;
-		aProps[PROP_SEED].m_pName = nullptr;
+		aProps[(int)ETilesProp::PROP_AUTOMAPPER].m_pName = nullptr;
+		aProps[(int)ETilesProp::PROP_SEED].m_pName = nullptr;
 	}
 
-	static int s_aIds[NUM_PROPS] = {0};
+	static int s_aIds[(int)ETilesProp::NUM_PROPS] = {0};
 	int NewVal = 0;
-	int Prop = m_pEditor->DoProperties(pToolBox, aProps, s_aIds, &NewVal);
+	auto [State, Prop] = m_pEditor->DoPropertiesWithState<ETilesProp>(pToolBox, aProps, s_aIds, &NewVal);
 
-	if(Prop == PROP_WIDTH && NewVal > 1)
+	static CLayerTilesPropTracker s_Tracker(m_pEditor);
+	s_Tracker.Begin(this, Prop, State);
+
+	if(Prop == ETilesProp::PROP_WIDTH && NewVal > 1)
 	{
 		if(NewVal > 1000 && !m_pEditor->m_LargeLayerWasWarned)
 		{
@@ -863,7 +981,7 @@ CUI::EPopupMenuFunctionResult CLayerTiles::RenderProperties(CUIRect *pToolBox)
 		}
 		Resize(NewVal, m_Height);
 	}
-	else if(Prop == PROP_HEIGHT && NewVal > 1)
+	else if(Prop == ETilesProp::PROP_HEIGHT && NewVal > 1)
 	{
 		if(NewVal > 1000 && !m_pEditor->m_LargeLayerWasWarned)
 		{
@@ -873,15 +991,15 @@ CUI::EPopupMenuFunctionResult CLayerTiles::RenderProperties(CUIRect *pToolBox)
 		}
 		Resize(m_Width, NewVal);
 	}
-	else if(Prop == PROP_SHIFT)
+	else if(Prop == ETilesProp::PROP_SHIFT)
 	{
 		Shift(NewVal);
 	}
-	else if(Prop == PROP_SHIFT_BY)
+	else if(Prop == ETilesProp::PROP_SHIFT_BY)
 	{
 		m_pEditor->m_ShiftBy = NewVal;
 	}
-	else if(Prop == PROP_IMAGE)
+	else if(Prop == ETilesProp::PROP_IMAGE)
 	{
 		m_Image = NewVal;
 		if(NewVal == -1)
@@ -901,14 +1019,14 @@ CUI::EPopupMenuFunctionResult CLayerTiles::RenderProperties(CUIRect *pToolBox)
 			}
 		}
 	}
-	else if(Prop == PROP_COLOR)
+	else if(Prop == ETilesProp::PROP_COLOR)
 	{
 		m_Color.r = (NewVal >> 24) & 0xff;
 		m_Color.g = (NewVal >> 16) & 0xff;
 		m_Color.b = (NewVal >> 8) & 0xff;
 		m_Color.a = NewVal & 0xff;
 	}
-	else if(Prop == PROP_COLOR_ENV)
+	else if(Prop == ETilesProp::PROP_COLOR_ENV)
 	{
 		int Index = clamp(NewVal - 1, -1, (int)m_pEditor->m_Map.m_vpEnvelopes.size() - 1);
 		const int Step = (Index - m_ColorEnv) % 2;
@@ -924,15 +1042,15 @@ CUI::EPopupMenuFunctionResult CLayerTiles::RenderProperties(CUIRect *pToolBox)
 			}
 		}
 	}
-	else if(Prop == PROP_COLOR_ENV_OFFSET)
+	else if(Prop == ETilesProp::PROP_COLOR_ENV_OFFSET)
 	{
 		m_ColorEnvOffset = NewVal;
 	}
-	else if(Prop == PROP_SEED)
+	else if(Prop == ETilesProp::PROP_SEED)
 	{
 		m_Seed = NewVal;
 	}
-	else if(Prop == PROP_AUTOMAPPER)
+	else if(Prop == ETilesProp::PROP_AUTOMAPPER)
 	{
 		if(m_Image >= 0 && m_pEditor->m_Map.m_vpImages[m_Image]->m_AutoMapper.ConfigNamesNum() > 0 && NewVal >= 0)
 			m_AutoMapperConfig = NewVal % m_pEditor->m_Map.m_vpImages[m_Image]->m_AutoMapper.ConfigNamesNum();
@@ -940,15 +1058,17 @@ CUI::EPopupMenuFunctionResult CLayerTiles::RenderProperties(CUIRect *pToolBox)
 			m_AutoMapperConfig = -1;
 	}
 
-	if(Prop != -1)
+	if(Prop != ETilesProp::PROP_NONE)
 	{
 		FlagModified(0, 0, m_Width, m_Height);
 	}
 
+	s_Tracker.End(Prop, State);
+
 	return CUI::POPUP_KEEP_OPEN;
 }
 
-CUI::EPopupMenuFunctionResult CLayerTiles::RenderCommonProperties(SCommonPropState &State, CEditor *pEditor, CUIRect *pToolbox, std::vector<std::shared_ptr<CLayerTiles>> &vpLayers)
+CUI::EPopupMenuFunctionResult CLayerTiles::RenderCommonProperties(SCommonPropState &State, CEditor *pEditor, CUIRect *pToolbox, std::vector<std::shared_ptr<CLayerTiles>> &vpLayers, std::vector<int> &vLayerIndices)
 {
 	if(State.m_Modified)
 	{
@@ -957,22 +1077,77 @@ CUI::EPopupMenuFunctionResult CLayerTiles::RenderCommonProperties(SCommonPropSta
 		static int s_CommitButton = 0;
 		if(pEditor->DoButton_Editor(&s_CommitButton, "Commit", 0, &Commit, 0, "Applies the changes"))
 		{
+			bool HasModifiedSize = (State.m_Modified & SCommonPropState::MODIFIED_SIZE) != 0;
+			bool HasModifiedColor = (State.m_Modified & SCommonPropState::MODIFIED_COLOR) != 0;
+
+			std::vector<std::shared_ptr<IEditorAction>> vpActions;
+			int j = 0;
+			int GroupIndex = pEditor->m_SelectedGroup;
 			for(auto &pLayer : vpLayers)
 			{
-				if((State.m_Modified & SCommonPropState::MODIFIED_SIZE) != 0)
+				int LayerIndex = vLayerIndices[j++];
+				if(HasModifiedSize)
+				{
+					std::map<int, std::shared_ptr<CLayer>> SavedLayers;
+					SavedLayers[LAYERTYPE_TILES] = pLayer->Duplicate();
+					if(pLayer->m_Game || pLayer->m_Front || pLayer->m_Switch || pLayer->m_Speedup || pLayer->m_Tune || pLayer->m_Tele)
+					{ // Need to save all entities layers when any entity layer
+						if(pEditor->m_Map.m_pFrontLayer && !pLayer->m_Front)
+							SavedLayers[LAYERTYPE_FRONT] = pEditor->m_Map.m_pFrontLayer->Duplicate();
+						if(pEditor->m_Map.m_pTeleLayer && !pLayer->m_Tele)
+							SavedLayers[LAYERTYPE_TELE] = pEditor->m_Map.m_pTeleLayer->Duplicate();
+						if(pEditor->m_Map.m_pSwitchLayer && !pLayer->m_Switch)
+							SavedLayers[LAYERTYPE_SWITCH] = pEditor->m_Map.m_pSwitchLayer->Duplicate();
+						if(pEditor->m_Map.m_pSpeedupLayer && !pLayer->m_Speedup)
+							SavedLayers[LAYERTYPE_SPEEDUP] = pEditor->m_Map.m_pSpeedupLayer->Duplicate();
+						if(pEditor->m_Map.m_pTuneLayer && !pLayer->m_Tune)
+							SavedLayers[LAYERTYPE_TUNE] = pEditor->m_Map.m_pTuneLayer->Duplicate();
+						if(!pLayer->m_Game)
+							SavedLayers[LAYERTYPE_GAME] = pEditor->m_Map.m_pGameLayer->Duplicate();
+					}
+
+					int PrevW = pLayer->m_Width;
+					int PrevH = pLayer->m_Height;
 					pLayer->Resize(State.m_Width, State.m_Height);
 
-				if((State.m_Modified & SCommonPropState::MODIFIED_COLOR) != 0)
+					if(PrevW != State.m_Width)
 					{
+						std::shared_ptr<CEditorActionEditLayerTilesProp> pAction;
+						vpActions.push_back(pAction = std::make_shared<CEditorActionEditLayerTilesProp>(pEditor, GroupIndex, LayerIndex, ETilesProp::PROP_WIDTH, PrevW, State.m_Width));
+						pAction->SetSavedLayers(SavedLayers);
+					}
+
+					if(PrevH != State.m_Height)
+					{
+						std::shared_ptr<CEditorActionEditLayerTilesProp> pAction;
+						vpActions.push_back(pAction = std::make_shared<CEditorActionEditLayerTilesProp>(pEditor, GroupIndex, LayerIndex, ETilesProp::PROP_HEIGHT, PrevH, State.m_Height));
+						pAction->SetSavedLayers(SavedLayers);
+					}
+				}
+
+				if(HasModifiedColor)
+				{
+					int Color = 0;
+					Color |= pLayer->m_Color.r << 24;
+					Color |= pLayer->m_Color.g << 16;
+					Color |= pLayer->m_Color.b << 8;
+					Color |= pLayer->m_Color.a;
+
 					pLayer->m_Color.r = (State.m_Color >> 24) & 0xff;
 					pLayer->m_Color.g = (State.m_Color >> 16) & 0xff;
 					pLayer->m_Color.b = (State.m_Color >> 8) & 0xff;
 					pLayer->m_Color.a = State.m_Color & 0xff;
+
+					vpActions.push_back(std::make_shared<CEditorActionEditLayerTilesProp>(pEditor, GroupIndex, LayerIndex, ETilesProp::PROP_COLOR, Color, State.m_Color));
 				}
 
 				pLayer->FlagModified(0, 0, pLayer->m_Width, pLayer->m_Height);
 			}
 			State.m_Modified = 0;
+
+			char aDisplay[256];
+			str_format(aDisplay, sizeof(aDisplay), "Edit %d layers common properties: %s", (int)vpLayers.size(), HasModifiedColor && HasModifiedSize ? "color, size" : (HasModifiedColor ? "color" : "size"));
+			pEditor->m_EditorHistory.RecordAction(std::make_shared<CEditorActionBulk>(pEditor, vpActions, aDisplay));
 		}
 	}
 	else
@@ -999,16 +1174,6 @@ CUI::EPopupMenuFunctionResult CLayerTiles::RenderCommonProperties(SCommonPropSta
 		pToolbox->HSplitTop(2.0f, nullptr, pToolbox);
 	}
 
-	enum
-	{
-		PROP_WIDTH = 0,
-		PROP_HEIGHT,
-		PROP_SHIFT,
-		PROP_SHIFT_BY,
-		PROP_COLOR,
-		NUM_PROPS,
-	};
-
 	CProperty aProps[] = {
 		{"Width", State.m_Width, PROPTYPE_INT_SCROLL, 1, 100000},
 		{"Height", State.m_Height, PROPTYPE_INT_SCROLL, 1, 100000},
@@ -1018,11 +1183,17 @@ CUI::EPopupMenuFunctionResult CLayerTiles::RenderCommonProperties(SCommonPropSta
 		{nullptr},
 	};
 
-	static int s_aIds[NUM_PROPS] = {0};
+	static int s_aIds[(int)ETilesCommonProp::NUM_PROPS] = {0};
 	int NewVal = 0;
-	int Prop = pEditor->DoProperties(pToolbox, aProps, s_aIds, &NewVal);
+	auto [PropState, Prop] = pEditor->DoPropertiesWithState<ETilesCommonProp>(pToolbox, aProps, s_aIds, &NewVal);
 
-	if(Prop == PROP_WIDTH && NewVal > 1)
+	static CLayerTilesCommonPropTracker s_Tracker(pEditor);
+	s_Tracker.m_vpLayers = vpLayers;
+	s_Tracker.m_vLayerIndices = vLayerIndices;
+
+	s_Tracker.Begin(nullptr, Prop, PropState);
+
+	if(Prop == ETilesCommonProp::PROP_WIDTH && NewVal > 1)
 	{
 		if(NewVal > 1000 && !pEditor->m_LargeLayerWasWarned)
 		{
@@ -1032,7 +1203,7 @@ CUI::EPopupMenuFunctionResult CLayerTiles::RenderCommonProperties(SCommonPropSta
 		}
 		State.m_Width = NewVal;
 	}
-	else if(Prop == PROP_HEIGHT && NewVal > 1)
+	else if(Prop == ETilesCommonProp::PROP_HEIGHT && NewVal > 1)
 	{
 		if(NewVal > 1000 && !pEditor->m_LargeLayerWasWarned)
 		{
@@ -1042,25 +1213,27 @@ CUI::EPopupMenuFunctionResult CLayerTiles::RenderCommonProperties(SCommonPropSta
 		}
 		State.m_Height = NewVal;
 	}
-	else if(Prop == PROP_SHIFT)
+	else if(Prop == ETilesCommonProp::PROP_SHIFT)
 	{
 		for(auto &pLayer : vpLayers)
 			pLayer->Shift(NewVal);
 	}
-	else if(Prop == PROP_SHIFT_BY)
+	else if(Prop == ETilesCommonProp::PROP_SHIFT_BY)
 	{
 		pEditor->m_ShiftBy = NewVal;
 	}
-	else if(Prop == PROP_COLOR)
+	else if(Prop == ETilesCommonProp::PROP_COLOR)
 	{
 		State.m_Color = NewVal;
 	}
 
-	if(Prop == PROP_WIDTH || Prop == PROP_HEIGHT)
+	s_Tracker.End(Prop, PropState);
+
+	if(Prop == ETilesCommonProp::PROP_WIDTH || Prop == ETilesCommonProp::PROP_HEIGHT)
 	{
 		State.m_Modified |= SCommonPropState::MODIFIED_SIZE;
 	}
-	else if(Prop == PROP_COLOR)
+	else if(Prop == ETilesCommonProp::PROP_COLOR)
 	{
 		State.m_Modified |= SCommonPropState::MODIFIED_COLOR;
 	}

src/game/editor/mapitems/layer_tiles.h

@@ -1,8 +1,21 @@
 #ifndef GAME_EDITOR_MAPITEMS_LAYER_TILES_H
 #define GAME_EDITOR_MAPITEMS_LAYER_TILES_H
 
+#include <game/editor/editor_trackers.h>
+#include <map>
+
 #include "layer.h"
 
+struct STileStateChange
+{
+	bool m_Changed;
+	CTile m_Previous;
+	CTile m_Current;
+};
+
+template<typename T>
+using EditorTileStateChangeHistory = std::map<int, std::map<int, T>>;
+
 enum
 {
 	DIRECTION_LEFT = 0,
@@ -89,6 +102,7 @@ public:
 
 	virtual CTile GetTile(int x, int y);
 	virtual void SetTile(int x, int y, CTile Tile);
+	void SetTileIgnoreHistory(int x, int y, CTile Tile);
 
 	virtual void Resize(int NewW, int NewH);
 	virtual void Shift(int Direction);
@@ -114,6 +128,7 @@ public:
 	void BrushRotate(float Amount) override;
 
 	std::shared_ptr<CLayer> Duplicate() const override;
+	const char *TypeName() const override;
 
 	virtual void ShowInfo();
 	CUI::EPopupMenuFunctionResult RenderProperties(CUIRect *pToolbox) override;
@@ -130,7 +145,7 @@ public:
 		int m_Height = -1;
 		int m_Color = 0;
 	};
-	static CUI::EPopupMenuFunctionResult RenderCommonProperties(SCommonPropState &State, CEditor *pEditor, CUIRect *pToolbox, std::vector<std::shared_ptr<CLayerTiles>> &vpLayers);
+	static CUI::EPopupMenuFunctionResult RenderCommonProperties(SCommonPropState &State, CEditor *pEditor, CUIRect *pToolbox, std::vector<std::shared_ptr<CLayerTiles>> &vpLayers, std::vector<int> &vLayerIndices);
 
 	void ModifyImageIndex(FIndexModifyFunction pfnFunc) override;
 	void ModifyEnvelopeIndex(FIndexModifyFunction pfnFunc) override;
@@ -166,6 +181,14 @@ public:
 	int m_Switch;
 	int m_Tune;
 	char m_aFileName[IO_MAX_PATH_LENGTH];
+
+	EditorTileStateChangeHistory<STileStateChange> m_TilesHistory;
+	inline virtual void ClearHistory() { m_TilesHistory.clear(); }
+
+protected:
+	void RecordStateChange(int x, int y, CTile Previous, CTile Tile);
+
+	friend class CAutoMapper;
 };
 
 #endif

src/game/editor/mapitems/layer_tune.cpp

@@ -12,6 +12,16 @@ CLayerTune::CLayerTune(CEditor *pEditor, int w, int h) :
 	mem_zero(m_pTuneTile, (size_t)w * h * sizeof(CTuneTile));
 }
 
+CLayerTune::CLayerTune(const CLayerTune &Other) :
+	CLayerTiles(Other)
+{
+	str_copy(m_aName, "Tune copy");
+	m_Tune = 1;
+
+	m_pTuneTile = new CTuneTile[m_Width * m_Height];
+	mem_copy(m_pTuneTile, Other.m_pTuneTile, (size_t)m_Width * m_Height * sizeof(CTuneTile));
+}
+
 CLayerTune::~CLayerTune()
 {
 	delete[] m_pTuneTile;
@@ -82,40 +92,61 @@ void CLayerTune::BrushDraw(std::shared_ptr<CLayer> pBrush, float wx, float wy)
 			if(!Destructive && GetTile(fx, fy).m_Index)
 				continue;
 
+			int Index = fy * m_Width + fx;
+			STuneTileStateChange::SData Previous{
+				m_pTuneTile[Index].m_Number,
+				m_pTuneTile[Index].m_Type,
+				m_pTiles[Index].m_Index};
+
 			if((m_pEditor->m_AllowPlaceUnusedTiles || IsValidTuneTile(pTuneLayer->m_pTiles[y * pTuneLayer->m_Width + x].m_Index)) && pTuneLayer->m_pTiles[y * pTuneLayer->m_Width + x].m_Index != TILE_AIR)
 			{
 				if(m_pEditor->m_TuningNum != pTuneLayer->m_TuningNumber)
 				{
-					m_pTuneTile[fy * m_Width + fx].m_Number = m_pEditor->m_TuningNum;
+					m_pTuneTile[Index].m_Number = m_pEditor->m_TuningNum;
 				}
 				else if(pTuneLayer->m_pTuneTile[y * pTuneLayer->m_Width + x].m_Number)
-					m_pTuneTile[fy * m_Width + fx].m_Number = pTuneLayer->m_pTuneTile[y * pTuneLayer->m_Width + x].m_Number;
+					m_pTuneTile[Index].m_Number = pTuneLayer->m_pTuneTile[y * pTuneLayer->m_Width + x].m_Number;
 				else
 				{
 					if(!m_pEditor->m_TuningNum)
 					{
-						m_pTuneTile[fy * m_Width + fx].m_Number = 0;
-						m_pTuneTile[fy * m_Width + fx].m_Type = 0;
-						m_pTiles[fy * m_Width + fx].m_Index = 0;
+						m_pTuneTile[Index].m_Number = 0;
+						m_pTuneTile[Index].m_Type = 0;
+						m_pTiles[Index].m_Index = 0;
 						continue;
 					}
 					else
-						m_pTuneTile[fy * m_Width + fx].m_Number = m_pEditor->m_TuningNum;
+						m_pTuneTile[Index].m_Number = m_pEditor->m_TuningNum;
 				}
 
-				m_pTuneTile[fy * m_Width + fx].m_Type = pTuneLayer->m_pTiles[y * pTuneLayer->m_Width + x].m_Index;
-				m_pTiles[fy * m_Width + fx].m_Index = pTuneLayer->m_pTiles[y * pTuneLayer->m_Width + x].m_Index;
+				m_pTuneTile[Index].m_Type = pTuneLayer->m_pTiles[y * pTuneLayer->m_Width + x].m_Index;
+				m_pTiles[Index].m_Index = pTuneLayer->m_pTiles[y * pTuneLayer->m_Width + x].m_Index;
 			}
 			else
 			{
-				m_pTuneTile[fy * m_Width + fx].m_Number = 0;
-				m_pTuneTile[fy * m_Width + fx].m_Type = 0;
-				m_pTiles[fy * m_Width + fx].m_Index = 0;
+				m_pTuneTile[Index].m_Number = 0;
+				m_pTuneTile[Index].m_Type = 0;
+				m_pTiles[Index].m_Index = 0;
 			}
+
+			STuneTileStateChange::SData Current{
+				m_pTuneTile[Index].m_Number,
+				m_pTuneTile[Index].m_Type,
+				m_pTiles[Index].m_Index};
+
+			RecordStateChange(fx, fy, Previous, Current);
 		}
 	FlagModified(sx, sy, pTuneLayer->m_Width, pTuneLayer->m_Height);
 }
 
+void CLayerTune::RecordStateChange(int x, int y, STuneTileStateChange::SData Previous, STuneTileStateChange::SData Current)
+{
+	if(!m_History[y][x].m_Changed)
+		m_History[y][x] = STuneTileStateChange{true, Previous, Current};
+	else
+		m_History[y][x].m_Current = Current;
+}
+
 void CLayerTune::BrushFlipX()
 {
 	CLayerTiles::BrushFlipX();
@@ -194,6 +225,11 @@ void CLayerTune::FillSelection(bool Empty, std::shared_ptr<CLayer> pBrush, CUIRe
 			const int SrcIndex = Empty ? 0 : (y * pLt->m_Width + x % pLt->m_Width) % (pLt->m_Width * pLt->m_Height);
 			const int TgtIndex = fy * m_Width + fx;
 
+			STuneTileStateChange::SData Previous{
+				m_pTuneTile[TgtIndex].m_Number,
+				m_pTuneTile[TgtIndex].m_Type,
+				m_pTiles[TgtIndex].m_Index};
+
 			if(Empty || (!m_pEditor->m_AllowPlaceUnusedTiles && !IsValidTuneTile((pLt->m_pTiles[SrcIndex]).m_Index)))
 			{
 				m_pTiles[TgtIndex].m_Index = 0;
@@ -213,8 +249,25 @@ void CLayerTune::FillSelection(bool Empty, std::shared_ptr<CLayer> pBrush, CUIRe
 						m_pTuneTile[TgtIndex].m_Number = pLt->m_pTuneTile[SrcIndex].m_Number;
 				}
 			}
+
+			STuneTileStateChange::SData Current{
+				m_pTuneTile[TgtIndex].m_Number,
+				m_pTuneTile[TgtIndex].m_Type,
+				m_pTiles[TgtIndex].m_Index};
+
+			RecordStateChange(fx, fy, Previous, Current);
 		}
 	}
 
 	FlagModified(sx, sy, w, h);
 }
+
+std::shared_ptr<CLayer> CLayerTune::Duplicate() const
+{
+	return std::make_shared<CLayerTune>(*this);
+}
+
+const char *CLayerTune::TypeName() const
+{
+	return "tune";
+}

src/game/editor/mapitems/layer_tune.h

@@ -3,10 +3,22 @@
 
 #include "layer_tiles.h"
 
+struct STuneTileStateChange
+{
+	bool m_Changed;
+	struct SData
+	{
+		int m_Number;
+		int m_Type;
+		int m_Index;
+	} m_Previous, m_Current;
+};
+
 class CLayerTune : public CLayerTiles
 {
 public:
 	CLayerTune(CEditor *pEditor, int w, int h);
+	CLayerTune(const CLayerTune &Other);
 	~CLayerTune();
 
 	CTuneTile *m_pTuneTile;
@@ -20,6 +32,19 @@ public:
 	void BrushFlipY() override;
 	void BrushRotate(float Amount) override;
 	void FillSelection(bool Empty, std::shared_ptr<CLayer> pBrush, CUIRect Rect) override;
+
+	EditorTileStateChangeHistory<STuneTileStateChange> m_History;
+	inline void ClearHistory() override
+	{
+		CLayerTiles::ClearHistory();
+		m_History.clear();
+	}
+
+	std::shared_ptr<CLayer> Duplicate() const override;
+	const char *TypeName() const override;
+
+private:
+	void RecordStateChange(int x, int y, STuneTileStateChange::SData Previous, STuneTileStateChange::SData Current);
 };
 
 #endif

src/game/editor/popups.cpp

@@ -16,6 +16,7 @@
 #include <game/editor/mapitems/sound.h>
 
 #include "editor.h"
+#include "editor_actions.h"
 
 CUI::EPopupMenuFunctionResult CEditor::PopupMenuFile(void *pContext, CUIRect View, bool Active)
 {
@@ -344,6 +345,7 @@ CUI::EPopupMenuFunctionResult CEditor::PopupGroup(void *pContext, CUIRect View,
 	{
 		if(pEditor->DoButton_Editor(&s_DeleteButton, "Delete group", 0, &Button, 0, "Delete group"))
 		{
+			pEditor->m_EditorHistory.RecordAction(std::make_shared<CEditorActionGroup>(pEditor, pEditor->m_SelectedGroup, true));
 			pEditor->m_Map.DeleteGroup(pEditor->m_SelectedGroup);
 			pEditor->m_SelectedGroup = maximum(0, pEditor->m_SelectedGroup - 1);
 			return CUI::POPUP_CLOSE_CURRENT;
@@ -403,8 +405,10 @@ CUI::EPopupMenuFunctionResult CEditor::PopupGroup(void *pContext, CUIRect View,
 			std::shared_ptr<CLayer> pTeleLayer = std::make_shared<CLayerTele>(pEditor, pEditor->m_Map.m_pGameLayer->m_Width, pEditor->m_Map.m_pGameLayer->m_Height);
 			pEditor->m_Map.MakeTeleLayer(pTeleLayer);
 			pEditor->m_Map.m_vpGroups[pEditor->m_SelectedGroup]->AddLayer(pTeleLayer);
-			pEditor->SelectLayer(pEditor->m_Map.m_vpGroups[pEditor->m_SelectedGroup]->m_vpLayers.size() - 1);
+			int LayerIndex = pEditor->m_Map.m_vpGroups[pEditor->m_SelectedGroup]->m_vpLayers.size() - 1;
+			pEditor->SelectLayer(LayerIndex);
 			pEditor->m_pBrush->Clear();
+			pEditor->m_EditorHistory.RecordAction(std::make_shared<CEditorActionAddLayer>(pEditor, pEditor->m_SelectedGroup, LayerIndex));
 			return CUI::POPUP_CLOSE_CURRENT;
 		}
 	}
@@ -420,8 +424,10 @@ CUI::EPopupMenuFunctionResult CEditor::PopupGroup(void *pContext, CUIRect View,
 			std::shared_ptr<CLayer> pSpeedupLayer = std::make_shared<CLayerSpeedup>(pEditor, pEditor->m_Map.m_pGameLayer->m_Width, pEditor->m_Map.m_pGameLayer->m_Height);
 			pEditor->m_Map.MakeSpeedupLayer(pSpeedupLayer);
 			pEditor->m_Map.m_vpGroups[pEditor->m_SelectedGroup]->AddLayer(pSpeedupLayer);
-			pEditor->SelectLayer(pEditor->m_Map.m_vpGroups[pEditor->m_SelectedGroup]->m_vpLayers.size() - 1);
+			int LayerIndex = pEditor->m_Map.m_vpGroups[pEditor->m_SelectedGroup]->m_vpLayers.size() - 1;
+			pEditor->SelectLayer(LayerIndex);
 			pEditor->m_pBrush->Clear();
+			pEditor->m_EditorHistory.RecordAction(std::make_shared<CEditorActionAddLayer>(pEditor, pEditor->m_SelectedGroup, LayerIndex));
 			return CUI::POPUP_CLOSE_CURRENT;
 		}
 	}
@@ -437,8 +443,10 @@ CUI::EPopupMenuFunctionResult CEditor::PopupGroup(void *pContext, CUIRect View,
 			std::shared_ptr<CLayer> pTuneLayer = std::make_shared<CLayerTune>(pEditor, pEditor->m_Map.m_pGameLayer->m_Width, pEditor->m_Map.m_pGameLayer->m_Height);
 			pEditor->m_Map.MakeTuneLayer(pTuneLayer);
 			pEditor->m_Map.m_vpGroups[pEditor->m_SelectedGroup]->AddLayer(pTuneLayer);
-			pEditor->SelectLayer(pEditor->m_Map.m_vpGroups[pEditor->m_SelectedGroup]->m_vpLayers.size() - 1);
+			int LayerIndex = pEditor->m_Map.m_vpGroups[pEditor->m_SelectedGroup]->m_vpLayers.size() - 1;
+			pEditor->SelectLayer(LayerIndex);
 			pEditor->m_pBrush->Clear();
+			pEditor->m_EditorHistory.RecordAction(std::make_shared<CEditorActionAddLayer>(pEditor, pEditor->m_SelectedGroup, LayerIndex));
 			return CUI::POPUP_CLOSE_CURRENT;
 		}
 	}
@@ -454,8 +462,10 @@ CUI::EPopupMenuFunctionResult CEditor::PopupGroup(void *pContext, CUIRect View,
 			std::shared_ptr<CLayer> pFrontLayer = std::make_shared<CLayerFront>(pEditor, pEditor->m_Map.m_pGameLayer->m_Width, pEditor->m_Map.m_pGameLayer->m_Height);
 			pEditor->m_Map.MakeFrontLayer(pFrontLayer);
 			pEditor->m_Map.m_vpGroups[pEditor->m_SelectedGroup]->AddLayer(pFrontLayer);
-			pEditor->SelectLayer(pEditor->m_Map.m_vpGroups[pEditor->m_SelectedGroup]->m_vpLayers.size() - 1);
+			int LayerIndex = pEditor->m_Map.m_vpGroups[pEditor->m_SelectedGroup]->m_vpLayers.size() - 1;
+			pEditor->SelectLayer(LayerIndex);
 			pEditor->m_pBrush->Clear();
+			pEditor->m_EditorHistory.RecordAction(std::make_shared<CEditorActionAddLayer>(pEditor, pEditor->m_SelectedGroup, LayerIndex));
 			return CUI::POPUP_CLOSE_CURRENT;
 		}
 	}
@@ -471,8 +481,10 @@ CUI::EPopupMenuFunctionResult CEditor::PopupGroup(void *pContext, CUIRect View,
 			std::shared_ptr<CLayer> pSwitchLayer = std::make_shared<CLayerSwitch>(pEditor, pEditor->m_Map.m_pGameLayer->m_Width, pEditor->m_Map.m_pGameLayer->m_Height);
 			pEditor->m_Map.MakeSwitchLayer(pSwitchLayer);
 			pEditor->m_Map.m_vpGroups[pEditor->m_SelectedGroup]->AddLayer(pSwitchLayer);
-			pEditor->SelectLayer(pEditor->m_Map.m_vpGroups[pEditor->m_SelectedGroup]->m_vpLayers.size() - 1);
+			int LayerIndex = pEditor->m_Map.m_vpGroups[pEditor->m_SelectedGroup]->m_vpLayers.size() - 1;
+			pEditor->SelectLayer(LayerIndex);
 			pEditor->m_pBrush->Clear();
+			pEditor->m_EditorHistory.RecordAction(std::make_shared<CEditorActionAddLayer>(pEditor, pEditor->m_SelectedGroup, LayerIndex));
 			return CUI::POPUP_CLOSE_CURRENT;
 		}
 	}
@@ -485,8 +497,10 @@ CUI::EPopupMenuFunctionResult CEditor::PopupGroup(void *pContext, CUIRect View,
 	{
 		std::shared_ptr<CLayer> pQuadLayer = std::make_shared<CLayerQuads>(pEditor);
 		pEditor->m_Map.m_vpGroups[pEditor->m_SelectedGroup]->AddLayer(pQuadLayer);
-		pEditor->SelectLayer(pEditor->m_Map.m_vpGroups[pEditor->m_SelectedGroup]->m_vpLayers.size() - 1);
+		int LayerIndex = pEditor->m_Map.m_vpGroups[pEditor->m_SelectedGroup]->m_vpLayers.size() - 1;
+		pEditor->SelectLayer(LayerIndex);
 		pEditor->m_Map.m_vpGroups[pEditor->m_SelectedGroup]->m_Collapse = false;
+		pEditor->m_EditorHistory.RecordAction(std::make_shared<CEditorActionAddLayer>(pEditor, pEditor->m_SelectedGroup, LayerIndex));
 		return CUI::POPUP_CLOSE_CURRENT;
 	}
 
@@ -499,8 +513,10 @@ CUI::EPopupMenuFunctionResult CEditor::PopupGroup(void *pContext, CUIRect View,
 		std::shared_ptr<CLayer> pTileLayer = std::make_shared<CLayerTiles>(pEditor, pEditor->m_Map.m_pGameLayer->m_Width, pEditor->m_Map.m_pGameLayer->m_Height);
 		pTileLayer->m_pEditor = pEditor;
 		pEditor->m_Map.m_vpGroups[pEditor->m_SelectedGroup]->AddLayer(pTileLayer);
-		pEditor->SelectLayer(pEditor->m_Map.m_vpGroups[pEditor->m_SelectedGroup]->m_vpLayers.size() - 1);
+		int LayerIndex = pEditor->m_Map.m_vpGroups[pEditor->m_SelectedGroup]->m_vpLayers.size() - 1;
+		pEditor->SelectLayer(LayerIndex);
 		pEditor->m_Map.m_vpGroups[pEditor->m_SelectedGroup]->m_Collapse = false;
+		pEditor->m_EditorHistory.RecordAction(std::make_shared<CEditorActionAddLayer>(pEditor, pEditor->m_SelectedGroup, LayerIndex));
 		return CUI::POPUP_CLOSE_CURRENT;
 	}
 
@@ -512,8 +528,10 @@ CUI::EPopupMenuFunctionResult CEditor::PopupGroup(void *pContext, CUIRect View,
 	{
 		std::shared_ptr<CLayer> pSoundLayer = std::make_shared<CLayerSounds>(pEditor);
 		pEditor->m_Map.m_vpGroups[pEditor->m_SelectedGroup]->AddLayer(pSoundLayer);
-		pEditor->SelectLayer(pEditor->m_Map.m_vpGroups[pEditor->m_SelectedGroup]->m_vpLayers.size() - 1);
+		int LayerIndex = pEditor->m_Map.m_vpGroups[pEditor->m_SelectedGroup]->m_vpLayers.size() - 1;
+		pEditor->SelectLayer(LayerIndex);
 		pEditor->m_Map.m_vpGroups[pEditor->m_SelectedGroup]->m_Collapse = false;
+		pEditor->m_EditorHistory.RecordAction(std::make_shared<CEditorActionAddLayer>(pEditor, pEditor->m_SelectedGroup, LayerIndex));
 		return CUI::POPUP_CLOSE_CURRENT;
 	}
 
@@ -530,21 +548,6 @@ CUI::EPopupMenuFunctionResult CEditor::PopupGroup(void *pContext, CUIRect View,
 			pEditor->m_Map.OnModify();
 	}
 
-	enum
-	{
-		PROP_ORDER = 0,
-		PROP_POS_X,
-		PROP_POS_Y,
-		PROP_PARA_X,
-		PROP_PARA_Y,
-		PROP_USE_CLIPPING,
-		PROP_CLIP_X,
-		PROP_CLIP_Y,
-		PROP_CLIP_W,
-		PROP_CLIP_H,
-		NUM_PROPS,
-	};
-
 	CProperty aProps[] = {
 		{"Order", pEditor->m_SelectedGroup, PROPTYPE_INT_STEP, 0, (int)pEditor->m_Map.m_vpGroups.size() - 1},
 		{"Pos X", -pEditor->m_Map.m_vpGroups[pEditor->m_SelectedGroup]->m_OffsetX, PROPTYPE_INT_SCROLL, -1000000, 1000000},
@@ -561,17 +564,20 @@ CUI::EPopupMenuFunctionResult CEditor::PopupGroup(void *pContext, CUIRect View,
 
 	// cut the properties that aren't needed
 	if(pEditor->GetSelectedGroup()->m_GameGroup)
-		aProps[PROP_POS_X].m_pName = nullptr;
+		aProps[(int)EGroupProp::PROP_POS_X].m_pName = nullptr;
 
-	static int s_aIds[NUM_PROPS] = {0};
+	static int s_aIds[(int)EGroupProp::NUM_PROPS] = {0};
 	int NewVal = 0;
-	int Prop = pEditor->DoProperties(&View, aProps, s_aIds, &NewVal);
-	if(Prop != -1)
+	auto [State, Prop] = pEditor->DoPropertiesWithState<EGroupProp>(&View, aProps, s_aIds, &NewVal);
+	if(Prop != EGroupProp::PROP_NONE)
 	{
 		pEditor->m_Map.OnModify();
 	}
 
-	if(Prop == PROP_ORDER)
+	static CLayerGroupPropTracker s_Tracker(pEditor);
+	s_Tracker.Begin(pEditor->GetSelectedGroup().get(), Prop, State);
+
+	if(Prop == EGroupProp::PROP_ORDER)
 	{
 		pEditor->m_SelectedGroup = pEditor->m_Map.SwapGroups(pEditor->m_SelectedGroup, NewVal);
 	}
@@ -579,44 +585,46 @@ CUI::EPopupMenuFunctionResult CEditor::PopupGroup(void *pContext, CUIRect View,
 	// these can not be changed on the game group
 	if(!pEditor->GetSelectedGroup()->m_GameGroup)
 	{
-		if(Prop == PROP_PARA_X)
+		if(Prop == EGroupProp::PROP_PARA_X)
 		{
 			pEditor->m_Map.m_vpGroups[pEditor->m_SelectedGroup]->m_ParallaxX = NewVal;
 		}
-		else if(Prop == PROP_PARA_Y)
+		else if(Prop == EGroupProp::PROP_PARA_Y)
 		{
 			pEditor->m_Map.m_vpGroups[pEditor->m_SelectedGroup]->m_ParallaxY = NewVal;
 		}
-		else if(Prop == PROP_POS_X)
+		else if(Prop == EGroupProp::PROP_POS_X)
 		{
-			pEditor->m_Map.m_vpGroups[pEditor->m_SelectedGroup]->m_OffsetX = -NewVal;
+			pEditor->m_Map.m_vpGroups[pEditor->m_SelectedGroup]->m_OffsetX = NewVal;
 		}
-		else if(Prop == PROP_POS_Y)
+		else if(Prop == EGroupProp::PROP_POS_Y)
 		{
-			pEditor->m_Map.m_vpGroups[pEditor->m_SelectedGroup]->m_OffsetY = -NewVal;
+			pEditor->m_Map.m_vpGroups[pEditor->m_SelectedGroup]->m_OffsetY = NewVal;
 		}
-		else if(Prop == PROP_USE_CLIPPING)
+		else if(Prop == EGroupProp::PROP_USE_CLIPPING)
 		{
 			pEditor->m_Map.m_vpGroups[pEditor->m_SelectedGroup]->m_UseClipping = NewVal;
 		}
-		else if(Prop == PROP_CLIP_X)
+		else if(Prop == EGroupProp::PROP_CLIP_X)
 		{
 			pEditor->m_Map.m_vpGroups[pEditor->m_SelectedGroup]->m_ClipX = NewVal;
 		}
-		else if(Prop == PROP_CLIP_Y)
+		else if(Prop == EGroupProp::PROP_CLIP_Y)
 		{
 			pEditor->m_Map.m_vpGroups[pEditor->m_SelectedGroup]->m_ClipY = NewVal;
 		}
-		else if(Prop == PROP_CLIP_W)
+		else if(Prop == EGroupProp::PROP_CLIP_W)
 		{
 			pEditor->m_Map.m_vpGroups[pEditor->m_SelectedGroup]->m_ClipW = NewVal;
 		}
-		else if(Prop == PROP_CLIP_H)
+		else if(Prop == EGroupProp::PROP_CLIP_H)
 		{
 			pEditor->m_Map.m_vpGroups[pEditor->m_SelectedGroup]->m_ClipH = NewVal;
 		}
 	}
 
+	s_Tracker.End(Prop, State);
+
 	return CUI::POPUP_KEEP_OPEN;
 }
 
@@ -630,7 +638,7 @@ CUI::EPopupMenuFunctionResult CEditor::PopupLayer(void *pContext, CUIRect View,
 
 	if(pPopup->m_vpLayers.size() > 1)
 	{
-		return CLayerTiles::RenderCommonProperties(pPopup->m_CommonPropState, pEditor, &View, pPopup->m_vpLayers);
+		return CLayerTiles::RenderCommonProperties(pPopup->m_CommonPropState, pEditor, &View, pPopup->m_vpLayers, pPopup->m_vLayerIndices);
 	}
 
 	const bool EntitiesLayer = pCurrentLayer->IsEntitiesLayer();
@@ -643,6 +651,8 @@ CUI::EPopupMenuFunctionResult CEditor::PopupLayer(void *pContext, CUIRect View,
 		static int s_DeleteButton = 0;
 		if(pEditor->DoButton_Editor(&s_DeleteButton, "Delete layer", 0, &DeleteButton, 0, "Deletes the layer"))
 		{
+			pEditor->m_EditorHistory.RecordAction(std::make_shared<CEditorActionDeleteLayer>(pEditor, pEditor->m_SelectedGroup, pEditor->m_vSelectedLayers[0]));
+
 			if(pCurrentLayer == pEditor->m_Map.m_pFrontLayer)
 				pEditor->m_Map.m_pFrontLayer = nullptr;
 			if(pCurrentLayer == pEditor->m_Map.m_pTeleLayer)
@@ -654,6 +664,7 @@ CUI::EPopupMenuFunctionResult CEditor::PopupLayer(void *pContext, CUIRect View,
 			if(pCurrentLayer == pEditor->m_Map.m_pTuneLayer)
 				pEditor->m_Map.m_pTuneLayer = nullptr;
 			pEditor->m_Map.m_vpGroups[pEditor->m_SelectedGroup]->DeleteLayer(pEditor->m_vSelectedLayers[0]);
+
 			return CUI::POPUP_CLOSE_CURRENT;
 		}
 	}
@@ -668,6 +679,7 @@ CUI::EPopupMenuFunctionResult CEditor::PopupLayer(void *pContext, CUIRect View,
 		if(pEditor->DoButton_Editor(&s_DuplicationButton, "Duplicate layer", 0, &DuplicateButton, 0, "Duplicates the layer"))
 		{
 			pEditor->m_Map.m_vpGroups[pEditor->m_SelectedGroup]->DuplicateLayer(pEditor->m_vSelectedLayers[0]);
+			pEditor->m_EditorHistory.RecordAction(std::make_shared<CEditorActionAddLayer>(pEditor, pEditor->m_SelectedGroup, pEditor->m_vSelectedLayers[0] + 1, true));
 			return CUI::POPUP_CLOSE_CURRENT;
 		}
 	}
@@ -690,14 +702,6 @@ CUI::EPopupMenuFunctionResult CEditor::PopupLayer(void *pContext, CUIRect View,
 	if(!EntitiesLayer || pEditor->m_Map.m_pGameLayer != pCurrentLayer)
 		View.HSplitBottom(10.0f, &View, nullptr);
 
-	enum
-	{
-		PROP_GROUP = 0,
-		PROP_ORDER,
-		PROP_HQ,
-		NUM_PROPS,
-	};
-
 	CProperty aProps[] = {
 		{"Group", pEditor->m_SelectedGroup, PROPTYPE_INT_STEP, 0, (int)pEditor->m_Map.m_vpGroups.size() - 1},
 		{"Order", pEditor->m_vSelectedLayers[0], PROPTYPE_INT_STEP, 0, (int)pCurrentGroup->m_vpLayers.size() - 1},
@@ -718,19 +722,23 @@ CUI::EPopupMenuFunctionResult CEditor::PopupLayer(void *pContext, CUIRect View,
 		aProps[2].m_Type = PROPTYPE_NULL;
 	}
 
-	static int s_aIds[NUM_PROPS] = {0};
+	static int s_aIds[(int)ELayerProp::NUM_PROPS] = {0};
 	int NewVal = 0;
-	int Prop = pEditor->DoProperties(&View, aProps, s_aIds, &NewVal);
-	if(Prop != -1)
+	auto [State, Prop] = pEditor->DoPropertiesWithState<ELayerProp>(&View, aProps, s_aIds, &NewVal);
+	if(Prop != ELayerProp::PROP_NONE)
 	{
 		pEditor->m_Map.OnModify();
 	}
 
-	if(Prop == PROP_ORDER)
+	static CLayerPropTracker s_Tracker(pEditor);
+	s_Tracker.Begin(pCurrentLayer.get(), Prop, State);
+
+	if(Prop == ELayerProp::PROP_ORDER)
 	{
-		pEditor->SelectLayer(pCurrentGroup->SwapLayers(pEditor->m_vSelectedLayers[0], NewVal));
+		int NewIndex = pCurrentGroup->SwapLayers(pEditor->m_vSelectedLayers[0], NewVal);
+		pEditor->SelectLayer(NewIndex);
 	}
-	else if(Prop == PROP_GROUP)
+	else if(Prop == ELayerProp::PROP_GROUP)
 	{
 		if(NewVal >= 0 && (size_t)NewVal < pEditor->m_Map.m_vpGroups.size())
 		{
@@ -742,13 +750,15 @@ CUI::EPopupMenuFunctionResult CEditor::PopupLayer(void *pContext, CUIRect View,
 			pEditor->SelectLayer(pEditor->m_Map.m_vpGroups[NewVal]->m_vpLayers.size() - 1);
 		}
 	}
-	else if(Prop == PROP_HQ)
+	else if(Prop == ELayerProp::PROP_HQ)
 	{
 		pCurrentLayer->m_Flags &= ~LAYERFLAG_DETAIL;
 		if(NewVal)
 			pCurrentLayer->m_Flags |= LAYERFLAG_DETAIL;
 	}
 
+	s_Tracker.End(Prop, State);
+
 	return pCurrentLayer->RenderProperties(&View);
 }
 
@@ -782,6 +792,7 @@ CUI::EPopupMenuFunctionResult CEditor::PopupQuad(void *pContext, CUIRect View, b
 		static int s_AspectRatioButton = 0;
 		if(pEditor->DoButton_Editor(&s_AspectRatioButton, "Aspect ratio", 0, &Button, 0, "Resizes the current Quad based on the aspect ratio of the image"))
 		{
+			pEditor->m_QuadTracker.BeginQuadTrack(pLayer, pEditor->m_vSelectedQuads);
 			for(auto &pQuad : vpQuads)
 			{
 				int Top = pQuad->m_aPoints[0].y;
@@ -810,6 +821,8 @@ CUI::EPopupMenuFunctionResult CEditor::PopupQuad(void *pContext, CUIRect View, b
 				pQuad->m_aPoints[3].y = Top + Height;
 				pEditor->m_Map.OnModify();
 			}
+			pEditor->m_QuadTracker.EndQuadTrack();
+
 			return CUI::POPUP_CLOSE_CURRENT;
 		}
 	}
@@ -820,6 +833,7 @@ CUI::EPopupMenuFunctionResult CEditor::PopupQuad(void *pContext, CUIRect View, b
 	static int s_AlignButton = 0;
 	if(pEditor->DoButton_Editor(&s_AlignButton, "Align", 0, &Button, 0, "Aligns coordinates of the quad points"))
 	{
+		pEditor->m_QuadTracker.BeginQuadTrack(pLayer, pEditor->m_vSelectedQuads);
 		for(auto &pQuad : vpQuads)
 		{
 			for(int k = 1; k < 4; k++)
@@ -829,6 +843,7 @@ CUI::EPopupMenuFunctionResult CEditor::PopupQuad(void *pContext, CUIRect View, b
 			}
 			pEditor->m_Map.OnModify();
 		}
+		pEditor->m_QuadTracker.EndQuadTrack();
 		return CUI::POPUP_CLOSE_CURRENT;
 	}
 
@@ -838,6 +853,7 @@ CUI::EPopupMenuFunctionResult CEditor::PopupQuad(void *pContext, CUIRect View, b
 	static int s_Button = 0;
 	if(pEditor->DoButton_Editor(&s_Button, "Square", 0, &Button, 0, "Squares the current quad"))
 	{
+		pEditor->m_QuadTracker.BeginQuadTrack(pLayer, pEditor->m_vSelectedQuads);
 		for(auto &pQuad : vpQuads)
 		{
 			int Top = pQuad->m_aPoints[0].y;
@@ -867,6 +883,7 @@ CUI::EPopupMenuFunctionResult CEditor::PopupQuad(void *pContext, CUIRect View, b
 			pQuad->m_aPoints[3].y = Bottom;
 			pEditor->m_Map.OnModify();
 		}
+		pEditor->m_QuadTracker.EndQuadTrack();
 		return CUI::POPUP_CLOSE_CURRENT;
 	}
 
@@ -881,18 +898,6 @@ CUI::EPopupMenuFunctionResult CEditor::PopupQuad(void *pContext, CUIRect View, b
 		return CUI::POPUP_CLOSE_CURRENT;
 	}
 
-	enum
-	{
-		PROP_ORDER = 0,
-		PROP_POS_X,
-		PROP_POS_Y,
-		PROP_POS_ENV,
-		PROP_POS_ENV_OFFSET,
-		PROP_COLOR_ENV,
-		PROP_COLOR_ENV_OFFSET,
-		NUM_PROPS,
-	};
-
 	const int NumQuads = pLayer ? (int)pLayer->m_vQuads.size() : 0;
 	CProperty aProps[] = {
 		{"Order", pEditor->m_vSelectedQuads[pEditor->m_SelectedQuadIndex], PROPTYPE_INT_STEP, 0, NumQuads},
@@ -905,18 +910,23 @@ CUI::EPopupMenuFunctionResult CEditor::PopupQuad(void *pContext, CUIRect View, b
 		{nullptr},
 	};
 
-	static int s_aIds[NUM_PROPS] = {0};
+	static int s_aIds[(int)EQuadProp::NUM_PROPS] = {0};
 	int NewVal = 0;
-	int Prop = pEditor->DoProperties(&View, aProps, s_aIds, &NewVal);
-	if(Prop != -1)
+	auto PropRes = pEditor->DoPropertiesWithState<EQuadProp>(&View, aProps, s_aIds, &NewVal);
+	EQuadProp Prop = PropRes.m_Value;
+	if(Prop != EQuadProp::PROP_NONE)
 	{
 		pEditor->m_Map.OnModify();
+		if(PropRes.m_State == EEditState::START || PropRes.m_State == EEditState::ONE_GO)
+		{
+			pEditor->m_QuadTracker.BeginQuadPropTrack(pLayer, pEditor->m_vSelectedQuads, Prop);
+		}
 	}
 
 	const float OffsetX = i2fx(NewVal) - pCurrentQuad->m_aPoints[4].x;
 	const float OffsetY = i2fx(NewVal) - pCurrentQuad->m_aPoints[4].y;
 
-	if(Prop == PROP_ORDER && pLayer)
+	if(Prop == EQuadProp::PROP_ORDER && pLayer)
 	{
 		const int QuadIndex = pLayer->SwapQuads(pEditor->m_vSelectedQuads[pEditor->m_SelectedQuadIndex], NewVal);
 		pEditor->m_vSelectedQuads[pEditor->m_SelectedQuadIndex] = QuadIndex;
@@ -924,17 +934,17 @@ CUI::EPopupMenuFunctionResult CEditor::PopupQuad(void *pContext, CUIRect View, b
 
 	for(auto &pQuad : vpQuads)
 	{
-		if(Prop == PROP_POS_X)
+		if(Prop == EQuadProp::PROP_POS_X)
 		{
 			for(auto &Point : pQuad->m_aPoints)
 				Point.x += OffsetX;
 		}
-		else if(Prop == PROP_POS_Y)
+		else if(Prop == EQuadProp::PROP_POS_Y)
 		{
 			for(auto &Point : pQuad->m_aPoints)
 				Point.y += OffsetY;
 		}
-		else if(Prop == PROP_POS_ENV)
+		else if(Prop == EQuadProp::PROP_POS_ENV)
 		{
 			int Index = clamp(NewVal - 1, -1, (int)pEditor->m_Map.m_vpEnvelopes.size() - 1);
 			int StepDirection = Index < pQuad->m_PosEnv ? -1 : 1;
@@ -950,11 +960,11 @@ CUI::EPopupMenuFunctionResult CEditor::PopupQuad(void *pContext, CUIRect View, b
 				}
 			}
 		}
-		else if(Prop == PROP_POS_ENV_OFFSET)
+		else if(Prop == EQuadProp::PROP_POS_ENV_OFFSET)
 		{
 			pQuad->m_PosEnvOffset = NewVal;
 		}
-		else if(Prop == PROP_COLOR_ENV)
+		else if(Prop == EQuadProp::PROP_COLOR_ENV)
 		{
 			int Index = clamp(NewVal - 1, -1, (int)pEditor->m_Map.m_vpEnvelopes.size() - 1);
 			int StepDirection = Index < pQuad->m_ColorEnv ? -1 : 1;
@@ -970,12 +980,20 @@ CUI::EPopupMenuFunctionResult CEditor::PopupQuad(void *pContext, CUIRect View, b
 				}
 			}
 		}
-		else if(Prop == PROP_COLOR_ENV_OFFSET)
+		else if(Prop == EQuadProp::PROP_COLOR_ENV_OFFSET)
 		{
 			pQuad->m_ColorEnvOffset = NewVal;
 		}
 	}
 
+	if(Prop != EQuadProp::PROP_NONE)
+	{
+		if(PropRes.m_State == EEditState::END || PropRes.m_State == EEditState::ONE_GO)
+		{
+			pEditor->m_QuadTracker.EndQuadPropTrack(Prop);
+		}
+	}
+
 	return CUI::POPUP_KEEP_OPEN;
 }
 
@@ -983,6 +1001,8 @@ CUI::EPopupMenuFunctionResult CEditor::PopupSource(void *pContext, CUIRect View,
 {
 	CEditor *pEditor = static_cast<CEditor *>(pContext);
 	CSoundSource *pSource = pEditor->GetSelectedSource();
+	if(!pSource)
+		return CUI::POPUP_CLOSE_CURRENT;
 
 	CUIRect Button;
 
@@ -994,9 +1014,7 @@ CUI::EPopupMenuFunctionResult CEditor::PopupSource(void *pContext, CUIRect View,
 		std::shared_ptr<CLayerSounds> pLayer = std::static_pointer_cast<CLayerSounds>(pEditor->GetSelectedLayerType(0, LAYERTYPE_SOUNDS));
 		if(pLayer)
 		{
-			pEditor->m_Map.OnModify();
-			pLayer->m_vSources.erase(pLayer->m_vSources.begin() + pEditor->m_SelectedSource);
-			pEditor->m_SelectedSource--;
+			pEditor->m_EditorHistory.Execute(std::make_shared<CEditorActionDeleteSoundSource>(pEditor, pEditor->m_SelectedGroup, pEditor->m_vSelectedLayers[0], pEditor->m_SelectedSource));
 		}
 		return CUI::POPUP_CLOSE_CURRENT;
 	}
@@ -1015,39 +1033,8 @@ CUI::EPopupMenuFunctionResult CEditor::PopupSource(void *pContext, CUIRect View,
 	static int s_ShapeTypeButton = 0;
 	if(pEditor->DoButton_Editor(&s_ShapeTypeButton, s_apShapeNames[pSource->m_Shape.m_Type], 0, &ShapeButton, 0, "Change shape"))
 	{
-		pSource->m_Shape.m_Type = (pSource->m_Shape.m_Type + 1) % CSoundShape::NUM_SHAPES;
-
-		// set default values
-		switch(pSource->m_Shape.m_Type)
-		{
-		case CSoundShape::SHAPE_CIRCLE:
-		{
-			pSource->m_Shape.m_Circle.m_Radius = 1000.0f;
-			break;
+		pEditor->m_EditorHistory.Execute(std::make_shared<CEditorActionEditSoundSource>(pEditor, pEditor->m_SelectedGroup, pEditor->m_vSelectedLayers[0], pEditor->m_SelectedSource, CEditorActionEditSoundSource::EEditType::SHAPE, (pSource->m_Shape.m_Type + 1) % CSoundShape::NUM_SHAPES));
 	}
-		case CSoundShape::SHAPE_RECTANGLE:
-		{
-			pSource->m_Shape.m_Rectangle.m_Width = f2fx(1000.0f);
-			pSource->m_Shape.m_Rectangle.m_Height = f2fx(800.0f);
-			break;
-		}
-		}
-	}
-
-	enum
-	{
-		PROP_POS_X = 0,
-		PROP_POS_Y,
-		PROP_LOOP,
-		PROP_PAN,
-		PROP_TIME_DELAY,
-		PROP_FALLOFF,
-		PROP_POS_ENV,
-		PROP_POS_ENV_OFFSET,
-		PROP_SOUND_ENV,
-		PROP_SOUND_ENV_OFFSET,
-		NUM_PROPS,
-	};
 
 	CProperty aProps[] = {
 		{"Pos X", pSource->m_Position.x / 1000, PROPTYPE_INT_SCROLL, -1000000, 1000000},
@@ -1063,39 +1050,42 @@ CUI::EPopupMenuFunctionResult CEditor::PopupSource(void *pContext, CUIRect View,
 		{nullptr},
 	};
 
-	static int s_aIds[NUM_PROPS] = {0};
+	static int s_aIds[(int)ESoundProp::NUM_PROPS] = {0};
 	int NewVal = 0;
-	int Prop = pEditor->DoProperties(&View, aProps, s_aIds, &NewVal);
-	if(Prop != -1)
+	auto [State, Prop] = pEditor->DoPropertiesWithState<ESoundProp>(&View, aProps, s_aIds, &NewVal);
+	if(Prop != ESoundProp::PROP_NONE)
 	{
 		pEditor->m_Map.OnModify();
 	}
 
-	if(Prop == PROP_POS_X)
+	static CSoundSourcePropTracker s_Tracker(pEditor);
+	s_Tracker.Begin(pSource, Prop, State);
+
+	if(Prop == ESoundProp::PROP_POS_X)
 	{
 		pSource->m_Position.x = NewVal * 1000;
 	}
-	else if(Prop == PROP_POS_Y)
+	else if(Prop == ESoundProp::PROP_POS_Y)
 	{
 		pSource->m_Position.y = NewVal * 1000;
 	}
-	else if(Prop == PROP_LOOP)
+	else if(Prop == ESoundProp::PROP_LOOP)
 	{
 		pSource->m_Loop = NewVal;
 	}
-	else if(Prop == PROP_PAN)
+	else if(Prop == ESoundProp::PROP_PAN)
 	{
 		pSource->m_Pan = NewVal;
 	}
-	else if(Prop == PROP_TIME_DELAY)
+	else if(Prop == ESoundProp::PROP_TIME_DELAY)
 	{
 		pSource->m_TimeDelay = NewVal;
 	}
-	else if(Prop == PROP_FALLOFF)
+	else if(Prop == ESoundProp::PROP_FALLOFF)
 	{
 		pSource->m_Falloff = NewVal;
 	}
-	else if(Prop == PROP_POS_ENV)
+	else if(Prop == ESoundProp::PROP_POS_ENV)
 	{
 		int Index = clamp(NewVal - 1, -1, (int)pEditor->m_Map.m_vpEnvelopes.size() - 1);
 		const int StepDirection = Index < pSource->m_PosEnv ? -1 : 1;
@@ -1108,11 +1098,11 @@ CUI::EPopupMenuFunctionResult CEditor::PopupSource(void *pContext, CUIRect View,
 			}
 		}
 	}
-	else if(Prop == PROP_POS_ENV_OFFSET)
+	else if(Prop == ESoundProp::PROP_POS_ENV_OFFSET)
 	{
 		pSource->m_PosEnvOffset = NewVal;
 	}
-	else if(Prop == PROP_SOUND_ENV)
+	else if(Prop == ESoundProp::PROP_SOUND_ENV)
 	{
 		int Index = clamp(NewVal - 1, -1, (int)pEditor->m_Map.m_vpEnvelopes.size() - 1);
 		const int StepDirection = Index < pSource->m_SoundEnv ? -1 : 1;
@@ -1125,75 +1115,72 @@ CUI::EPopupMenuFunctionResult CEditor::PopupSource(void *pContext, CUIRect View,
 			}
 		}
 	}
-	else if(Prop == PROP_SOUND_ENV_OFFSET)
+	else if(Prop == ESoundProp::PROP_SOUND_ENV_OFFSET)
 	{
 		pSource->m_SoundEnvOffset = NewVal;
 	}
 
+	s_Tracker.End(Prop, State);
+
 	// source shape properties
 	switch(pSource->m_Shape.m_Type)
 	{
 	case CSoundShape::SHAPE_CIRCLE:
 	{
-		enum
-		{
-			PROP_CIRCLE_RADIUS = 0,
-			NUM_CIRCLE_PROPS,
-		};
-
 		CProperty aCircleProps[] = {
 			{"Radius", pSource->m_Shape.m_Circle.m_Radius, PROPTYPE_INT_SCROLL, 0, 1000000},
 			{nullptr},
 		};
 
-		static int s_aCircleIds[NUM_CIRCLE_PROPS] = {0};
+		static int s_aCircleIds[(int)ECircleShapeProp::NUM_CIRCLE_PROPS] = {0};
 		NewVal = 0;
-		Prop = pEditor->DoProperties(&View, aCircleProps, s_aCircleIds, &NewVal);
-		if(Prop != -1)
+		auto [LocalState, LocalProp] = pEditor->DoPropertiesWithState<ECircleShapeProp>(&View, aCircleProps, s_aCircleIds, &NewVal);
+		if(LocalProp != ECircleShapeProp::PROP_NONE)
 		{
 			pEditor->m_Map.OnModify();
 		}
 
-		if(Prop == PROP_CIRCLE_RADIUS)
+		static CSoundSourceCircleShapePropTracker s_ShapeTracker(pEditor);
+		s_ShapeTracker.Begin(pSource, LocalProp, LocalState);
+
+		if(LocalProp == ECircleShapeProp::PROP_CIRCLE_RADIUS)
 		{
 			pSource->m_Shape.m_Circle.m_Radius = NewVal;
 		}
 
+		s_ShapeTracker.End(LocalProp, LocalState);
 		break;
 	}
 
 	case CSoundShape::SHAPE_RECTANGLE:
 	{
-		enum
-		{
-			PROP_RECTANGLE_WIDTH = 0,
-			PROP_RECTANGLE_HEIGHT,
-			NUM_RECTANGLE_PROPS,
-		};
-
 		CProperty aRectangleProps[] = {
 			{"Width", pSource->m_Shape.m_Rectangle.m_Width / 1024, PROPTYPE_INT_SCROLL, 0, 1000000},
 			{"Height", pSource->m_Shape.m_Rectangle.m_Height / 1024, PROPTYPE_INT_SCROLL, 0, 1000000},
 			{nullptr},
 		};
 
-		static int s_aRectangleIds[NUM_RECTANGLE_PROPS] = {0};
+		static int s_aRectangleIds[(int)ERectangleShapeProp::NUM_RECTANGLE_PROPS] = {0};
 		NewVal = 0;
-		Prop = pEditor->DoProperties(&View, aRectangleProps, s_aRectangleIds, &NewVal);
-		if(Prop != -1)
+		auto [LocalState, LocalProp] = pEditor->DoPropertiesWithState<ERectangleShapeProp>(&View, aRectangleProps, s_aRectangleIds, &NewVal);
+		if(LocalProp != ERectangleShapeProp::PROP_NONE)
 		{
 			pEditor->m_Map.OnModify();
 		}
 
-		if(Prop == PROP_RECTANGLE_WIDTH)
+		static CSoundSourceRectShapePropTracker s_ShapeTracker(pEditor);
+		s_ShapeTracker.Begin(pSource, LocalProp, LocalState);
+
+		if(LocalProp == ERectangleShapeProp::PROP_RECTANGLE_WIDTH)
 		{
 			pSource->m_Shape.m_Rectangle.m_Width = NewVal * 1024;
 		}
-		else if(Prop == PROP_RECTANGLE_HEIGHT)
+		else if(LocalProp == ERectangleShapeProp::PROP_RECTANGLE_HEIGHT)
 		{
 			pSource->m_Shape.m_Rectangle.m_Height = NewVal * 1024;
 		}
 
+		s_ShapeTracker.End(LocalProp, LocalState);
 		break;
 	}
 	}
@@ -1208,22 +1195,9 @@ CUI::EPopupMenuFunctionResult CEditor::PopupPoint(void *pContext, CUIRect View,
 	if(!in_range<int>(pEditor->m_SelectedQuadIndex, 0, vpQuads.size() - 1))
 		return CUI::POPUP_CLOSE_CURRENT;
 	CQuad *pCurrentQuad = vpQuads[pEditor->m_SelectedQuadIndex];
+	std::shared_ptr<CLayerQuads> pLayer = std::static_pointer_cast<CLayerQuads>(pEditor->GetSelectedLayerType(0, LAYERTYPE_QUADS));
 
-	enum
-	{
-		PROP_POS_X = 0,
-		PROP_POS_Y,
-		PROP_COLOR,
-		PROP_TEX_U,
-		PROP_TEX_V,
-		NUM_PROPS,
-	};
-
-	int Color = 0;
-	Color |= pCurrentQuad->m_aColors[pEditor->m_SelectedQuadPoint].r << 24;
-	Color |= pCurrentQuad->m_aColors[pEditor->m_SelectedQuadPoint].g << 16;
-	Color |= pCurrentQuad->m_aColors[pEditor->m_SelectedQuadPoint].b << 8;
-	Color |= pCurrentQuad->m_aColors[pEditor->m_SelectedQuadPoint].a;
+	int Color = PackColor(pCurrentQuad->m_aColors[pEditor->m_SelectedQuadPoint]);
 
 	const int X = fx2i(pCurrentQuad->m_aPoints[pEditor->m_SelectedQuadPoint].x);
 	const int Y = fx2i(pCurrentQuad->m_aPoints[pEditor->m_SelectedQuadPoint].y);
@@ -1239,29 +1213,35 @@ CUI::EPopupMenuFunctionResult CEditor::PopupPoint(void *pContext, CUIRect View,
 		{nullptr},
 	};
 
-	static int s_aIds[NUM_PROPS] = {0};
+	static int s_aIds[(int)EQuadPointProp::NUM_PROPS] = {0};
 	int NewVal = 0;
-	int Prop = pEditor->DoProperties(&View, aProps, s_aIds, &NewVal);
-	if(Prop != -1)
+	auto PropRes = pEditor->DoPropertiesWithState<EQuadPointProp>(&View, aProps, s_aIds, &NewVal);
+	EQuadPointProp Prop = PropRes.m_Value;
+	if(Prop != EQuadPointProp::PROP_NONE)
 	{
 		pEditor->m_Map.OnModify();
+		if(PropRes.m_State == EEditState::START || PropRes.m_State == EEditState::ONE_GO)
+		{
+			pEditor->m_QuadTracker.BeginQuadPointPropTrack(pLayer, pEditor->m_vSelectedQuads, pEditor->m_SelectedQuadPoints);
+			pEditor->m_QuadTracker.AddQuadPointPropTrack(Prop);
+		}
 	}
 
 	for(CQuad *pQuad : vpQuads)
 	{
-		if(Prop == PROP_POS_X)
+		if(Prop == EQuadPointProp::PROP_POS_X)
 		{
 			for(int v = 0; v < 4; v++)
 				if(pEditor->IsQuadCornerSelected(v))
 					pQuad->m_aPoints[v].x = i2fx(fx2i(pQuad->m_aPoints[v].x) + NewVal - X);
 		}
-		else if(Prop == PROP_POS_Y)
+		else if(Prop == EQuadPointProp::PROP_POS_Y)
 		{
 			for(int v = 0; v < 4; v++)
 				if(pEditor->IsQuadCornerSelected(v))
 					pQuad->m_aPoints[v].y = i2fx(fx2i(pQuad->m_aPoints[v].y) + NewVal - Y);
 		}
-		else if(Prop == PROP_COLOR)
+		else if(Prop == EQuadPointProp::PROP_COLOR)
 		{
 			for(int v = 0; v < 4; v++)
 			{
@@ -1274,13 +1254,13 @@ CUI::EPopupMenuFunctionResult CEditor::PopupPoint(void *pContext, CUIRect View,
 				}
 			}
 		}
-		else if(Prop == PROP_TEX_U)
+		else if(Prop == EQuadPointProp::PROP_TEX_U)
 		{
 			for(int v = 0; v < 4; v++)
 				if(pEditor->IsQuadCornerSelected(v))
 					pQuad->m_aTexcoords[v].x = f2fx(fx2f(pQuad->m_aTexcoords[v].x) + (NewVal - TextureU) / 1024.0f);
 		}
-		else if(Prop == PROP_TEX_V)
+		else if(Prop == EQuadPointProp::PROP_TEX_V)
 		{
 			for(int v = 0; v < 4; v++)
 				if(pEditor->IsQuadCornerSelected(v))
@@ -1288,12 +1268,24 @@ CUI::EPopupMenuFunctionResult CEditor::PopupPoint(void *pContext, CUIRect View,
 		}
 	}
 
+	if(Prop != EQuadPointProp::PROP_NONE)
+	{
+		pEditor->m_Map.OnModify();
+		if(PropRes.m_State == EEditState::END || PropRes.m_State == EEditState::ONE_GO)
+		{
+			pEditor->m_QuadTracker.EndQuadPointPropTrack(Prop);
+		}
+	}
+
 	return CUI::POPUP_KEEP_OPEN;
 }
 
 CUI::EPopupMenuFunctionResult CEditor::PopupEnvPoint(void *pContext, CUIRect View, bool Active)
 {
 	CEditor *pEditor = static_cast<CEditor *>(pContext);
+	if(pEditor->m_SelectedEnvelope < 0 || pEditor->m_SelectedEnvelope >= (int)pEditor->m_Map.m_vpEnvelopes.size())
+		return CUI::POPUP_CLOSE_CURRENT;
+
 	const float RowHeight = 12.0f;
 	CUIRect Row, Label, EditBox;
 
@@ -1309,14 +1301,41 @@ CUI::EPopupMenuFunctionResult CEditor::PopupEnvPoint(void *pContext, CUIRect Vie
 		Row.VSplitLeft(10.0f, nullptr, &EditBox);
 		pEditor->UI()->DoLabel(&Label, "Color:", RowHeight - 2.0f, TEXTALIGN_ML);
 
-		const auto [SelectedIndex, _] = pEditor->m_vSelectedEnvelopePoints.front();
+		const auto SelectedPoint = pEditor->m_vSelectedEnvelopePoints.front();
+		const int SelectedIndex = SelectedPoint.first;
 		auto *pValues = pEnvelope->m_vPoints[SelectedIndex].m_aValues;
 		const ColorRGBA Color = ColorRGBA(fx2f(pValues[0]), fx2f(pValues[1]), fx2f(pValues[2]), fx2f(pValues[3]));
 		const auto &&SetColor = [&](ColorRGBA NewColor) {
-			if(Color == NewColor)
+			if(Color == NewColor && pEditor->m_ColorPickerPopupContext.m_State == EEditState::EDITING)
 				return;
+
+			static int s_Values[4];
+
+			if(pEditor->m_ColorPickerPopupContext.m_State == EEditState::START || pEditor->m_ColorPickerPopupContext.m_State == EEditState::ONE_GO)
+			{
 				for(int Channel = 0; Channel < 4; ++Channel)
+					s_Values[Channel] = pValues[Channel];
+			}
+
+			for(int Channel = 0; Channel < 4; ++Channel)
+			{
 				pValues[Channel] = f2fx(NewColor[Channel]);
+			}
+
+			if(pEditor->m_ColorPickerPopupContext.m_State == EEditState::END || pEditor->m_ColorPickerPopupContext.m_State == EEditState::ONE_GO)
+			{
+				std::vector<std::shared_ptr<IEditorAction>> vpActions(4);
+
+				for(int Channel = 0; Channel < 4; ++Channel)
+				{
+					vpActions[Channel] = std::make_shared<CEditorActionEnvelopeEditPoint>(pEditor, pEditor->m_SelectedEnvelope, SelectedIndex, Channel, CEditorActionEnvelopeEditPoint::EEditType::VALUE, s_Values[Channel], f2fx(NewColor[Channel]));
+				}
+
+				char aDisplay[256];
+				str_format(aDisplay, sizeof(aDisplay), "Edit color of point %d of envelope %d", SelectedIndex, pEditor->m_SelectedEnvelope);
+				pEditor->m_EnvelopeEditorHistory.RecordAction(std::make_shared<CEditorActionBulk>(pEditor, vpActions, aDisplay));
+			}
+
 			pEditor->m_UpdateEnvPointInfo = true;
 			pEditor->m_Map.OnModify();
 		};
@@ -1327,37 +1346,23 @@ CUI::EPopupMenuFunctionResult CEditor::PopupEnvPoint(void *pContext, CUIRect Vie
 	static CLineInputNumber s_CurValueInput;
 	static CLineInputNumber s_CurTimeInput;
 
+	static float s_CurrentTime = 0;
+	static float s_CurrentValue = 0;
+
 	if(pEditor->m_UpdateEnvPointInfo)
 	{
 		pEditor->m_UpdateEnvPointInfo = false;
 
-		int CurrentTime;
-		int CurrentValue;
-		if(pEditor->IsTangentInSelected())
-		{
-			auto [SelectedIndex, SelectedChannel] = pEditor->m_SelectedTangentInPoint;
-
-			CurrentTime = pEnvelope->m_vPoints[SelectedIndex].m_Time + pEnvelope->m_vPoints[SelectedIndex].m_Bezier.m_aInTangentDeltaX[SelectedChannel];
-			CurrentValue = pEnvelope->m_vPoints[SelectedIndex].m_aValues[SelectedChannel] + pEnvelope->m_vPoints[SelectedIndex].m_Bezier.m_aInTangentDeltaY[SelectedChannel];
-		}
-		else if(pEditor->IsTangentOutSelected())
-		{
-			auto [SelectedIndex, SelectedChannel] = pEditor->m_SelectedTangentOutPoint;
-
-			CurrentTime = pEnvelope->m_vPoints[SelectedIndex].m_Time + pEnvelope->m_vPoints[SelectedIndex].m_Bezier.m_aOutTangentDeltaX[SelectedChannel];
-			CurrentValue = pEnvelope->m_vPoints[SelectedIndex].m_aValues[SelectedChannel] + pEnvelope->m_vPoints[SelectedIndex].m_Bezier.m_aOutTangentDeltaY[SelectedChannel];
-		}
-		else
-		{
-			auto [SelectedIndex, SelectedChannel] = pEditor->m_vSelectedEnvelopePoints.front();
-
-			CurrentTime = pEnvelope->m_vPoints[SelectedIndex].m_Time;
-			CurrentValue = pEnvelope->m_vPoints[SelectedIndex].m_aValues[SelectedChannel];
-		}
+		auto TimeAndValue = pEditor->EnvGetSelectedTimeAndValue();
+		int CurrentTime = TimeAndValue.first;
+		int CurrentValue = TimeAndValue.second;
 
 		// update displayed text
 		s_CurValueInput.SetFloat(fx2f(CurrentValue));
 		s_CurTimeInput.SetFloat(CurrentTime / 1000.0f);
+
+		s_CurrentTime = s_CurTimeInput.GetFloat();
+		s_CurrentValue = s_CurValueInput.GetFloat();
 	}
 
 	View.HSplitTop(RowHeight, &Row, &View);
@@ -1377,40 +1382,31 @@ CUI::EPopupMenuFunctionResult CEditor::PopupEnvPoint(void *pContext, CUIRect Vie
 	{
 		float CurrentTime = s_CurTimeInput.GetFloat();
 		float CurrentValue = s_CurValueInput.GetFloat();
+		if(!(absolute(CurrentTime - s_CurrentTime) < 0.0001f && absolute(CurrentValue - s_CurrentValue) < 0.0001f))
+		{
+			auto [OldTime, OldValue] = pEditor->EnvGetSelectedTimeAndValue();
+
 			if(pEditor->IsTangentInSelected())
 			{
 				auto [SelectedIndex, SelectedChannel] = pEditor->m_SelectedTangentInPoint;
 
-			pEnvelope->m_vPoints[SelectedIndex].m_Bezier.m_aInTangentDeltaX[SelectedChannel] = minimum<int>(CurrentTime * 1000.0f - pEnvelope->m_vPoints[SelectedIndex].m_Time, 0);
+				pEditor->m_EnvelopeEditorHistory.Execute(std::make_shared<CEditorActionEditEnvelopePointValue>(pEditor, pEditor->m_SelectedEnvelope, SelectedIndex, SelectedChannel, CEditorActionEditEnvelopePointValue::EType::TANGENT_IN, static_cast<int>(OldTime * 1000.0f), f2fx(OldValue), static_cast<int>(CurrentTime * 1000.0f), f2fx(CurrentValue)));
 				CurrentTime = (pEnvelope->m_vPoints[SelectedIndex].m_Time + pEnvelope->m_vPoints[SelectedIndex].m_Bezier.m_aInTangentDeltaX[SelectedChannel]) / 1000.0f;
-
-			pEnvelope->m_vPoints[SelectedIndex].m_Bezier.m_aInTangentDeltaY[SelectedChannel] = f2fx(CurrentValue) - pEnvelope->m_vPoints[SelectedIndex].m_aValues[SelectedChannel];
 			}
 			else if(pEditor->IsTangentOutSelected())
 			{
 				auto [SelectedIndex, SelectedChannel] = pEditor->m_SelectedTangentOutPoint;
 
-			pEnvelope->m_vPoints[SelectedIndex].m_Bezier.m_aOutTangentDeltaX[SelectedChannel] = maximum<int>(CurrentTime * 1000.0f - pEnvelope->m_vPoints[SelectedIndex].m_Time, 0);
+				pEditor->m_EnvelopeEditorHistory.Execute(std::make_shared<CEditorActionEditEnvelopePointValue>(pEditor, pEditor->m_SelectedEnvelope, SelectedIndex, SelectedChannel, CEditorActionEditEnvelopePointValue::EType::TANGENT_OUT, static_cast<int>(OldTime * 1000.0f), f2fx(OldValue), static_cast<int>(CurrentTime * 1000.0f), f2fx(CurrentValue)));
 				CurrentTime = (pEnvelope->m_vPoints[SelectedIndex].m_Time + pEnvelope->m_vPoints[SelectedIndex].m_Bezier.m_aOutTangentDeltaX[SelectedChannel]) / 1000.0f;
-
-			pEnvelope->m_vPoints[SelectedIndex].m_Bezier.m_aOutTangentDeltaY[SelectedChannel] = f2fx(CurrentValue) - pEnvelope->m_vPoints[SelectedIndex].m_aValues[SelectedChannel];
 			}
 			else
 			{
 				auto [SelectedIndex, SelectedChannel] = pEditor->m_vSelectedEnvelopePoints.front();
-			if(pEnvelope->GetChannels() == 4)
-				CurrentValue = clamp(CurrentValue, 0.0f, 1.0f);
-			pEnvelope->m_vPoints[SelectedIndex].m_aValues[SelectedChannel] = f2fx(CurrentValue);
+				pEditor->m_EnvelopeEditorHistory.Execute(std::make_shared<CEditorActionEditEnvelopePointValue>(pEditor, pEditor->m_SelectedEnvelope, SelectedIndex, SelectedChannel, CEditorActionEditEnvelopePointValue::EType::POINT, static_cast<int>(OldTime * 1000.0f), f2fx(OldValue), static_cast<int>(CurrentTime * 1000.0f), f2fx(CurrentValue)));
 
 				if(SelectedIndex != 0)
 				{
-				pEnvelope->m_vPoints[SelectedIndex].m_Time = CurrentTime * 1000.0f;
-
-				if(pEnvelope->m_vPoints[SelectedIndex].m_Time < pEnvelope->m_vPoints[SelectedIndex - 1].m_Time)
-					pEnvelope->m_vPoints[SelectedIndex].m_Time = pEnvelope->m_vPoints[SelectedIndex - 1].m_Time + 1;
-				if(static_cast<size_t>(SelectedIndex) + 1 != pEnvelope->m_vPoints.size() && pEnvelope->m_vPoints[SelectedIndex].m_Time > pEnvelope->m_vPoints[SelectedIndex + 1].m_Time)
-					pEnvelope->m_vPoints[SelectedIndex].m_Time = pEnvelope->m_vPoints[SelectedIndex + 1].m_Time - 1;
-
 					CurrentTime = pEnvelope->m_vPoints[SelectedIndex].m_Time / 1000.0f;
 				}
 				else
@@ -1423,7 +1419,9 @@ CUI::EPopupMenuFunctionResult CEditor::PopupEnvPoint(void *pContext, CUIRect Vie
 			s_CurTimeInput.SetFloat(static_cast<int>(CurrentTime * 1000.0f) / 1000.0f);
 			s_CurValueInput.SetFloat(fx2f(f2fx(CurrentValue)));
 
-		pEditor->m_Map.OnModify();
+			s_CurrentTime = s_CurTimeInput.GetFloat();
+			s_CurrentValue = s_CurValueInput.GetFloat();
+		}
 	}
 
 	View.HSplitTop(6.0f, nullptr, &View);
@@ -1436,24 +1434,18 @@ CUI::EPopupMenuFunctionResult CEditor::PopupEnvPoint(void *pContext, CUIRect Vie
 		if(pEditor->IsTangentInSelected())
 		{
 			auto [SelectedIndex, SelectedChannel] = pEditor->m_SelectedTangentInPoint;
-
-			pEnvelope->m_vPoints[SelectedIndex].m_Bezier.m_aInTangentDeltaX[SelectedChannel] = 0.0f;
-			pEnvelope->m_vPoints[SelectedIndex].m_Bezier.m_aInTangentDeltaY[SelectedChannel] = 0.0f;
+			pEditor->m_EnvelopeEditorHistory.Execute(std::make_shared<CEditorActionResetEnvelopePointTangent>(pEditor, pEditor->m_SelectedEnvelope, SelectedIndex, SelectedChannel, true));
 		}
 		else if(pEditor->IsTangentOutSelected())
 		{
 			auto [SelectedIndex, SelectedChannel] = pEditor->m_SelectedTangentOutPoint;
-
-			pEnvelope->m_vPoints[SelectedIndex].m_Bezier.m_aOutTangentDeltaX[SelectedChannel] = 0.0f;
-			pEnvelope->m_vPoints[SelectedIndex].m_Bezier.m_aOutTangentDeltaY[SelectedChannel] = 0.0f;
+			pEditor->m_EnvelopeEditorHistory.Execute(std::make_shared<CEditorActionResetEnvelopePointTangent>(pEditor, pEditor->m_SelectedEnvelope, SelectedIndex, SelectedChannel, false));
 		}
 		else
 		{
 			auto [SelectedIndex, SelectedChannel] = pEditor->m_vSelectedEnvelopePoints.front();
-
-			pEnvelope->m_vPoints.erase(pEnvelope->m_vPoints.begin() + SelectedIndex);
+			pEditor->m_EnvelopeEditorHistory.Execute(std::make_shared<CEditorActionDeleteEnvelopePoint>(pEditor, pEditor->m_SelectedEnvelope, SelectedIndex));
 		}
-		pEditor->m_Map.OnModify();
 
 		return CUI::POPUP_CLOSE_CURRENT;
 	}
@@ -1515,6 +1507,8 @@ CUI::EPopupMenuFunctionResult CEditor::PopupEnvPointCurveType(void *pContext, CU
 	if(pEditor->DoButton_MenuItem(&s_ButtonSmoothID, "Smooth", 0, &ButtonSmooth))
 		CurveType = CURVETYPE_SMOOTH;
 
+	std::vector<std::shared_ptr<IEditorAction>> vpActions;
+
 	if(CurveType >= 0)
 	{
 		std::shared_ptr<CEnvelope> pEnvelope = pEditor->m_Map.m_vpEnvelopes.at(pEditor->m_SelectedEnvelope);
@@ -1551,13 +1545,20 @@ CUI::EPopupMenuFunctionResult CEditor::PopupEnvPointCurveType(void *pContext, CU
 							CEnvPoint &CurrentPoint = pEnvelope->m_vPoints[SelectedIndex];
 							ColorRGBA Channels;
 							HelperEnvelope.Eval(CurrentPoint.m_Time / 1000.0f, Channels);
+							int PrevValue = CurrentPoint.m_aValues[c];
 							CurrentPoint.m_aValues[c] = f2fx(Channels.r);
+							vpActions.push_back(std::make_shared<CEditorActionEnvelopeEditPoint>(pEditor, pEditor->m_SelectedEnvelope, SelectedIndex, SelectedChannel, CEditorActionEnvelopeEditPoint::EEditType::VALUE, PrevValue, CurrentPoint.m_aValues[c]));
 						}
 					}
 				}
 			}
 		}
 
+		if(!vpActions.empty())
+		{
+			pEditor->m_EnvelopeEditorHistory.RecordAction(std::make_shared<CEditorActionBulk>(pEditor, vpActions, "Project points"));
+		}
+
 		pEditor->m_Map.OnModify();
 		return CUI::POPUP_CLOSE_CURRENT;
 	}

src/game/editor/tileart.cpp

@@ -1,4 +1,5 @@
 #include "editor.h"
+#include "editor_actions.h"
 
 #include <game/editor/mapitems/image.h>
 
@@ -184,10 +185,15 @@ static void SetTilelayerIndices(const std::shared_ptr<CLayerTiles> &pLayer, cons
 	}
 }
 
-void CEditor::AddTileart()
+void CEditor::AddTileart(bool IgnoreHistory)
 {
+	char aTileArtFileName[IO_MAX_PATH_LENGTH];
+	IStorage::StripPathAndExtension(m_aTileartFilename, aTileArtFileName, sizeof(aTileArtFileName));
+
 	std::shared_ptr<CLayerGroup> pGroup = m_Map.NewGroup();
-	str_copy(pGroup->m_aName, m_aTileartFilename);
+	str_copy(pGroup->m_aName, aTileArtFileName);
+
+	int ImageCount = m_Map.m_vpImages.size();
 
 	auto vUniqueColors = GetUniqueColors(m_TileartImageInfo);
 	auto vaColorGroups = GroupColors(vUniqueColors);
@@ -195,11 +201,16 @@ void CEditor::AddTileart()
 	char aImageName[IO_MAX_PATH_LENGTH];
 	for(size_t i = 0; i < vColorImages.size(); i++)
 	{
-		str_format(aImageName, sizeof(aImageName), "%s %" PRIzu, m_aTileartFilename, i + 1);
+		str_format(aImageName, sizeof(aImageName), "%s %" PRIzu, aTileArtFileName, i + 1);
 		std::shared_ptr<CLayerTiles> pLayer = AddLayerWithImage(this, pGroup, m_TileartImageInfo.m_Width, m_TileartImageInfo.m_Height, vColorImages[i], aImageName);
 		SetTilelayerIndices(pLayer, vaColorGroups[i], m_TileartImageInfo);
 	}
-	SortImages();
+	auto IndexMap = SortImages();
+
+	if(!IgnoreHistory)
+	{
+		m_EditorHistory.RecordAction(std::make_shared<CEditorActionTileArt>(this, ImageCount, m_aTileartFilename, IndexMap));
+	}
 
 	free(m_TileartImageInfo.m_pData);
 	m_TileartImageInfo.m_pData = nullptr;
@@ -237,7 +248,7 @@ bool CEditor::CallbackAddTileart(const char *pFilepath, int StorageType, void *p
 		return false;
 	}
 
-	IStorage::StripPathAndExtension(pFilepath, pEditor->m_aTileartFilename, sizeof(pEditor->m_aTileartFilename));
+	str_copy(pEditor->m_aTileartFilename, pFilepath);
 	if(pEditor->m_TileartImageInfo.m_Width * pEditor->m_TileartImageInfo.m_Height > 10'000)
 	{
 		pEditor->m_PopupEventType = CEditor::POPEVENT_PIXELART_BIG_IMAGE;

src/game/mapitems.cpp

@@ -150,3 +150,13 @@ bool IsCreditsTile(int TileIndex)
 		(TILE_CREDITS_7 == TileIndex) ||
 		(TILE_CREDITS_8 == TileIndex));
 }
+
+int PackColor(CColor Color)
+{
+	int Res = 0;
+	Res |= Color.r << 24;
+	Res |= Color.g << 16;
+	Res |= Color.b << 8;
+	Res |= Color.a;
+	return Res;
+}

src/game/mapitems.h

@@ -578,5 +578,6 @@ bool IsValidTuneTile(int Index);
 bool IsValidEntity(int Index);
 bool IsRotatableTile(int Index);
 bool IsCreditsTile(int TileIndex);
+int PackColor(CColor Color);
 
 #endif