Merge #6459

6459: Add random skin button r=def- a=HiRavie

Adds a button for generating a random skin in tee settings. The logic generates handsome tees more often than not.
Intentionally didn't add a console command so it's not possible to make annoying skin change binds with this.
![random_skin](https://user-images.githubusercontent.com/65019210/227658839-5e8f3a4b-4e7c-4561-90c9-21a267d61a3a.png)

## Checklist

- [x] Tested the change ingame
- [x] Provided screenshots if it is a visual change
- [x] Tested in combination with possibly related configuration options
- [ ] Written a unit test (especially base/) or added coverage to integration test
- [x] Considered possible null pointers and out of bounds array indexing
- [x] Changed no physics that affect existing maps
- [ ] Tested the change with [ASan+UBSan or valgrind's memcheck](https://github.com/ddnet/ddnet/#using-addresssanitizer--undefinedbehavioursanitizer-or-valgrinds-memcheck) (optional)


Co-authored-by: Ravie <65019210+HiRavie@users.noreply.github.com>

src/game/client/components/menus.h

@@ -105,6 +105,8 @@ class CMenus : public CComponent
 
 	void RefreshSkins();
 
+	void RandomSkin();
+
 	// new gui with gui elements
 	template<typename T>
 	int DoButtonMenu(CUIElement &UIElement, const void *pID, T &&GetTextLambda, int Checked, const CUIRect *pRect, bool HintRequiresStringCheck, bool HintCanChangePositionOrSize = false, int Corners = IGraphics::CORNER_ALL, float r = 5.0f, float FontFactor = 0.0f, vec4 ColorHot = vec4(1.0f, 1.0f, 1.0f, 0.75f), vec4 Color = vec4(1, 1, 1, 0.5f), int AlignVertically = 1)

src/game/client/components/menus_settings.cpp

@@ -438,6 +438,36 @@ void CMenus::RefreshSkins()
 	}
 }
 
+void CMenus::RandomSkin()
+{
+	static const float s_aSchemes[] = {1.0f / 2.0f, 1.0f / 3.0f, 1.0f / -3.0f, 1.0f / 12.0f, 1.0f / -12.0f}; // complementary, triadic, analogous
+
+	float GoalSat = random_float(0.3f, 1.0f);
+	float MaxBodyLht = 1.0f - GoalSat * GoalSat; // max allowed lightness before we start losing saturation
+
+	ColorHSLA Body;
+	Body.h = random_float();
+	Body.l = random_float(0.0f, MaxBodyLht);
+	Body.s = clamp(GoalSat * GoalSat / (1.0f - Body.l), 0.0f, 1.0f);
+
+	ColorHSLA Feet;
+	Feet.h = std::fmod(Body.h + s_aSchemes[rand() % std::size(s_aSchemes)], 1.0f);
+	Feet.l = random_float();
+	Feet.s = clamp(GoalSat * GoalSat / (1.0f - Feet.l), 0.0f, 1.0f);
+
+	const char *pRandomSkinName = CSkins::VANILLA_SKINS[rand() % (std::size(CSkins::VANILLA_SKINS) - 2)]; // last 2 skins are x_ninja and x_spec
+
+	char *pSkinName = !m_Dummy ? g_Config.m_ClPlayerSkin : g_Config.m_ClDummySkin;
+	unsigned *pColorBody = !m_Dummy ? &g_Config.m_ClPlayerColorBody : &g_Config.m_ClDummyColorBody;
+	unsigned *pColorFeet = !m_Dummy ? &g_Config.m_ClPlayerColorFeet : &g_Config.m_ClDummyColorFeet;
+
+	mem_copy(pSkinName, pRandomSkinName, sizeof(g_Config.m_ClPlayerSkin));
+	*pColorBody = Body.Pack(false);
+	*pColorFeet = Feet.Pack(false);
+
+	SetNeedSendInfo();
+}
+
 void CMenus::Con_AddFavoriteSkin(IConsole::IResult *pResult, void *pUserData)
 {
 	auto *pSelf = (CMenus *)pUserData;
@@ -601,7 +631,7 @@ void CMenus::RenderSettingsTee(CUIRect MainView)
 	OwnSkinInfo.m_Size = 50.0f;
 
 	MainView.HSplitTop(50.0f, &Label, &MainView);
-	Label.VSplitLeft(230.0f, &Label, 0);
+	Label.VSplitLeft(260.0f, &Label, 0);
 	CAnimState *pIdleState = CAnimState::GetIdle();
 	vec2 OffsetToMid;
 	RenderTools()->GetRenderTeeOffsetToRenderedTee(pIdleState, &OwnSkinInfo, OffsetToMid);
@@ -661,6 +691,8 @@ void CMenus::RenderSettingsTee(CUIRect MainView)
 		RenderTools()->RenderTee(pIdleState, &OwnSkinInfo, CurrentEyeEmote, vec2(1, 0), vec2(EyesTee.x + 25.0f, EyesTee.y + EyesTee.h / 2.0f + OffsetToMid.y));
 	}
 
+	Label.VSplitRight(34.0f, &Label, &Button);
+
 	static float s_OffsetSkin = 0.0f;
 	static int s_ClearButton = 0;
 	SUIExEditBoxProperties EditProps;
@@ -670,6 +702,22 @@ void CMenus::RenderSettingsTee(CUIRect MainView)
 		SetNeedSendInfo();
 	}
 
+	// random skin button
+	Button.VSplitRight(30.0f, 0, &Button);
+	static CButtonContainer s_RandomSkinButtonID;
+	static const char *s_apDice[] = {"\xef\x94\xa5", "\xef\x94\xa8", "\xef\x94\xa7", "\xef\x94\xa4", "\xef\x94\xa3", "\xef\x94\xa6"};
+	static int s_CurrentDie = rand() % std::size(s_apDice);
+	TextRender()->SetCurFont(TextRender()->GetFont(TEXT_FONT_ICON_FONT));
+	TextRender()->SetRenderFlags(ETextRenderFlags::TEXT_RENDER_FLAG_ONLY_ADVANCE_WIDTH | ETextRenderFlags::TEXT_RENDER_FLAG_NO_X_BEARING | ETextRenderFlags::TEXT_RENDER_FLAG_NO_Y_BEARING | ETextRenderFlags::TEXT_RENDER_FLAG_NO_PIXEL_ALIGMENT | ETextRenderFlags::TEXT_RENDER_FLAG_NO_OVERSIZE);
+	if(DoButton_Menu(&s_RandomSkinButtonID, s_apDice[s_CurrentDie], 1, &Button, nullptr, IGraphics::CORNER_ALL, 5.0f, -0.2f))
+	{
+		RandomSkin();
+		s_CurrentDie = rand() % std::size(s_apDice);
+	}
+	TextRender()->SetRenderFlags(0);
+	TextRender()->SetCurFont(nullptr);
+	GameClient()->m_Tooltips.DoToolTip(&s_RandomSkinButtonID, &Button, Localize("Create a random skin"));
+
 	// custom color selector
 	MainView.HSplitTop(20.0f + RenderEyesBelow * 25.0f, 0, &MainView);
 	MainView.HSplitTop(20.0f, &Button, &MainView);

src/game/client/components/skins.cpp

@@ -17,12 +17,7 @@
 
 #include "skins.h"
 
-static const char *VANILLA_SKINS[] = {"bluekitty", "bluestripe", "brownbear",
-	"cammo", "cammostripes", "coala", "default", "limekitty",
-	"pinky", "redbopp", "redstripe", "saddo", "toptri",
-	"twinbop", "twintri", "warpaint", "x_ninja", "x_spec"};
-
-static bool IsVanillaSkin(const char *pName)
+bool CSkins::IsVanillaSkin(const char *pName)
 {
 	return std::any_of(std::begin(VANILLA_SKINS), std::end(VANILLA_SKINS), [pName](const char *pVanillaSkin) { return str_comp(pName, pVanillaSkin) == 0; });
 }

src/game/client/components/skins.h

@@ -69,6 +69,13 @@ public:
 
 	bool IsDownloadingSkins() { return m_DownloadingSkins; }
 
+	static bool IsVanillaSkin(const char *pName);
+
+	constexpr static const char *VANILLA_SKINS[] = {"bluekitty", "bluestripe", "brownbear",
+		"cammo", "cammostripes", "coala", "default", "limekitty",
+		"pinky", "redbopp", "redstripe", "saddo", "toptri",
+		"twinbop", "twintri", "warpaint", "x_ninja", "x_spec"};
+
 private:
 	std::unordered_map<std::string_view, std::unique_ptr<CSkin>> m_Skins;
 	std::unordered_map<std::string_view, std::unique_ptr<CDownloadSkin>> m_DownloadSkins;