Blade Brother's Map OnLoad

map.cpp

bool Map::OnLoad(const char* filename)
{
	FILE* fileHandle = fopen(filename, "r");
	if (fileHandle == NULL)
		return false;

	// read in the magic
	fread(&magic, 4, 1, fileHandle);

	if (magic != 1179468354)
		return false;

	fread(&mapHeader.tilesX, sizeof(unsigned short), 1, fileHandle);
	fread(&mapHeader.tilesY, sizeof(unsigned short), 1, fileHandle);
	fread(&mapHeader.mapNameSize, sizeof(unsigned short), 1, fileHandle);
	mapHeader.mapName = (char*)malloc(mapHeader.mapNameSize);
	fread(mapHeader.mapName, mapHeader.mapNameSize, 1, fileHandle);
	mapHeader.mapName[mapHeader.mapNameSize] = '\0';
	fread(&mapHeader.tilesetNameSize, sizeof(unsigned short), 1, fileHandle);
	mapHeader.tileset = (char*)malloc(mapHeader.tilesetNameSize);
	fread(mapHeader.tileset, mapHeader.tilesetNameSize, 1, fileHandle);
	mapHeader.tileset[mapHeader.tilesetNameSize] = '\0';
	fread(&mapHeader.startX, sizeof(unsigned short), 1, fileHandle);
	fread(&mapHeader.startY, sizeof(unsigned short), 1, fileHandle);

	unsigned int tileCount = mapHeader.tilesX * mapHeader.tilesY;
	unsigned int tileBufSize = tileCount * sizeof(MapData);
	mapData = (MapData*) malloc(tileBufSize);

	// read in map data
	fread(mapData, tileBufSize, 1, fileHandle);

	fclose(fileHandle);

	// by passing NULL we tell the function we don't want to re-assign the tileset name itself
	setTileset(NULL);

	return true;
}