void Optimize(SpriteChunk chunk)
{
bool empty = true;
foreach (var v in chunk.spriteIds)
{
if (v != -1)
{
empty = false;
break;
}
}
if (empty)
chunk.spriteIds = new int[0];
}
void CreateChunk(SpriteChunk chunk)
{
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;
}
}
