tk2dRuntime.TileMap.Layer.Optimize C# (CSharp) Method

		{
			if (chunk.spriteIds == null || chunk.spriteIds.Length == 0)
			{
				chunk.spriteIds = new int[divX * divY];
				for (int i = 0; i < divX * divY; ++i)
					chunk.spriteIds[i] = -1;