Add map_convert_07 tool

Fixes https://github.com/ddnet/ddnet7/issues/20

CMakeLists.txt

@@ -1144,6 +1144,7 @@ set_glob(TOOLS GLOB src/tools
   dilate.cpp
   dummy_map.cpp
   fake_server.cpp
+  map_convert_07.cpp
   map_diff.cpp
   map_extract.cpp
   map_replace_image.cpp
@@ -1162,7 +1163,7 @@ foreach(ABS_T ${TOOLS})
     string(REGEX REPLACE "\\.cpp$" "" TOOL "${T}")
     set(TOOL_DEPS ${DEPS})
     set(TOOL_LIBS ${LIBS})
-    if(TOOL MATCHES "^(tileset_.*|dilate|map_extract|map_replace_image)$")
+    if(TOOL MATCHES "^(tileset_.*|dilate|map_convert_07|map_extract|map_replace_image)$")
       list(APPEND TOOL_DEPS ${PNGLITE_DEP})
       list(APPEND TOOL_LIBS ${PNGLITE_LIBRARIES})
       list(APPEND TOOL_INCLUDE_DIRS ${PNGLITE_INCLUDE_DIRS})

src/tools/map_convert_07.cpp

@@ -0,0 +1,172 @@
+/* (c) DDNet developers. See licence.txt in the root of the distribution for more information. */
+/* If you are missing that file, acquire a complete release at teeworlds.com.  */
+
+#include <base/system.h>
+#include <base/math.h>
+#include <engine/shared/datafile.h>
+#include <engine/storage.h>
+#include <engine/graphics.h>
+#include <game/mapitems.h>
+
+#include <pnglite.h>
+/*
+	Usage: map_convert_07 <source map filepath> <dest map filepath>
+	Notes: map filepath must be relative to user default teeworlds folder
+*/
+
+CDataFileReader g_DataReader;
+CDataFileWriter g_DataWriter;
+
+// global new image data (set by ReplaceImageItem)
+int g_NewDataSize[64];
+void *g_pNewData[64];
+
+int g_Index = 0;
+int g_NextDataItemID = -1;
+
+int LoadPNG(CImageInfo *pImg, const char *pFilename)
+{
+	unsigned char *pBuffer;
+	png_t Png;
+
+	int Error = png_open_file(&Png, pFilename);
+	if(Error != PNG_NO_ERROR)
+	{
+		dbg_msg("map_convert_07", "failed to open image file. filename='%s'", pFilename);
+		if(Error != PNG_FILE_ERROR)
+			png_close_file(&Png);
+		return 0;
+	}
+
+	if(Png.depth != 8 || (Png.color_type != PNG_TRUECOLOR && Png.color_type != PNG_TRUECOLOR_ALPHA) || Png.width > (2<<12) || Png.height > (2<<12))
+	{
+		dbg_msg("map_convert_07", "invalid image format. filename='%s'", pFilename);
+		png_close_file(&Png);
+		return 0;
+	}
+
+	pBuffer = (unsigned char *)malloc(Png.width * Png.height * Png.bpp);
+	png_get_data(&Png, pBuffer);
+	png_close_file(&Png);
+
+	pImg->m_Width = Png.width;
+	pImg->m_Height = Png.height;
+	if(Png.color_type == PNG_TRUECOLOR)
+		pImg->m_Format = CImageInfo::FORMAT_RGB;
+	else if(Png.color_type == PNG_TRUECOLOR_ALPHA)
+		pImg->m_Format = CImageInfo::FORMAT_RGBA;
+	pImg->m_pData = pBuffer;
+	return 1;
+}
+
+void *ReplaceImageItem(void *pItem, int Type, CMapItemImage *pNewImgItem)
+{
+	if(Type != MAPITEMTYPE_IMAGE)
+		return pItem;
+
+	CMapItemImage *pImgItem = (CMapItemImage *)pItem;
+
+	if(!pImgItem->m_External)
+		return pItem;
+
+	char *pName = (char *)g_DataReader.GetData(pImgItem->m_ImageName);
+	dbg_msg("map_convert_07", "embedding image '%s'", pName);
+
+	CImageInfo ImgInfo;
+	ImgInfo.m_Format = CImageInfo::FORMAT_RGB;
+	char aStr[64];
+	str_format(aStr, sizeof(aStr), "data/mapres/%s.png", pName);
+	if(!LoadPNG(&ImgInfo, aStr))
+		return pItem; // keep as external if we don't have a mapres to replace
+
+	*pNewImgItem = *pImgItem;
+
+	pNewImgItem->m_Width  = ImgInfo.m_Width;
+	pNewImgItem->m_Height = ImgInfo.m_Height;
+	pNewImgItem->m_External = false;
+	int PixelSize = ImgInfo.m_Format == CImageInfo::FORMAT_RGB ? 3 : 4;
+	pNewImgItem->m_ImageData = g_NextDataItemID++;
+
+	g_pNewData[g_Index] = ImgInfo.m_pData;
+	g_NewDataSize[g_Index] = ImgInfo.m_Width * ImgInfo.m_Height * PixelSize;
+	g_Index++;
+
+	return (void *)pNewImgItem;
+}
+
+int main(int argc, const char **argv)
+{
+	dbg_logger_stdout();
+
+	IStorage *pStorage = CreateStorage("Teeworlds", IStorage::STORAGETYPE_BASIC, argc, argv);
+
+	if(argc != 3)
+	{
+		dbg_msg("map_convert_07", "Invalid arguments");
+		dbg_msg("map_convert_07", "Usage: map_convert_07 <source map filepath> <dest map filepath>");
+		dbg_msg("map_convert_07", "Notes: map filepath must be relative to user default teeworlds folder");
+		return -1;
+	}
+
+	if (!pStorage)
+	{
+		dbg_msg("map_convert_07", "error loading storage");
+		return -1;
+	}
+
+	const char *pSourceFileName = argv[1];
+	const char *pDestFileName = argv[2];
+
+	int ID = 0;
+	int Type = 0;
+	int Size = 0;
+	void *pItem = 0;
+	void *pData = 0;
+
+	if(!g_DataReader.Open(pStorage, pSourceFileName, IStorage::TYPE_ALL))
+	{
+		dbg_msg("map_convert_07", "failed to open source map. filename='%s'", pSourceFileName);
+		return -1;
+	}
+
+	if(!g_DataWriter.Open(pStorage, pDestFileName))
+	{
+		dbg_msg("map_convert_07", "failed to open destination map. filename='%s'", pDestFileName);
+		return -1;
+	}
+
+	png_init(0,0);
+
+	g_NextDataItemID = g_DataReader.NumItems();
+
+	// add all items
+	for(int Index = 0; Index < g_DataReader.NumItems(); Index++)
+	{
+		CMapItemImage NewImageItem;
+		pItem = g_DataReader.GetItem(Index, &Type, &ID);
+		Size = g_DataReader.GetItemSize(Index);
+		pItem = ReplaceImageItem(pItem, Type, &NewImageItem);
+		if(!pItem)
+			return -1;
+		g_DataWriter.AddItem(Type, ID, Size, pItem);
+	}
+
+	// add all data
+	for(int Index = 0; Index < g_DataReader.NumItems(); Index++)
+	{
+		pData = g_DataReader.GetData(Index);
+		Size = g_DataReader.GetDataSize(Index);
+		g_DataWriter.AddData(Size, pData);
+	}
+
+	for(int Index = 0; Index < g_Index; Index++)
+	{
+		pData = g_pNewData[Index];
+		Size = g_NewDataSize[Index];
+		g_DataWriter.AddData(Size, pData);
+	}
+
+	g_DataReader.Close();
+	g_DataWriter.Finish();
+	return 0;
+}