int Tiles_optimization(tiles_data _data, bool _check)
{
int deleted_tiles_cnt = 0;
int size = _data.get_first_free_tile_id(false);
for (int tile_n = 0; tile_n < size; tile_n++)
{
if (check_screens_tile(tile_n, _data) == false)
{
if (_data.tiles[tile_n] != 0)
{
++deleted_tiles_cnt;
}
if (_check == true)
{
continue;
}
// delete the useless tile
Array.Copy(_data.tiles, tile_n + 1, _data.tiles, tile_n, platform_data.get_max_tiles_cnt() - tile_n - 1);
// the last tile is an empty space
_data.tiles[platform_data.get_max_tiles_cnt() - 1] = 0;
_data.dec_screen_tiles(( ushort )tile_n);
_data.dec_patterns_tiles(( ushort )tile_n);
--tile_n;
--size;
}
}
return(deleted_tiles_cnt);
}
int Blocks_optimization(tiles_data _data, bool _check)
{
int deleted_blocks_cnt = 0;
uint sum;
int block_offset;
int size = _data.get_first_free_block_id(false);
for (int block_n = 0; block_n < size; block_n++)
{
if (check_tiles_block(block_n, _data) == false)
{
sum = 0;
block_offset = block_n << 2;
for (int i = 0; i < utils.CONST_BLOCK_SIZE; i++)
{
sum += _data.blocks[block_offset + i];
}
if (sum != 0)
{
++deleted_blocks_cnt;
}
if (_check == true)
{
continue;
}
// delete the useless block
{
Array.Copy(_data.blocks, block_offset + utils.CONST_BLOCK_SIZE, _data.blocks, block_offset, (platform_data.get_max_blocks_cnt() << 2) /* * utils.CONST_BLOCK_SIZE*/ - (block_offset + utils.CONST_BLOCK_SIZE));
}
// the last block is an empty space
{
int last_block_ind = platform_data.get_max_blocks_cnt() << 2;
_data.blocks[last_block_ind - 1] = 0;
_data.blocks[last_block_ind - 2] = 0;
_data.blocks[last_block_ind - 3] = 0;
_data.blocks[last_block_ind - 4] = 0;
}
if (m_data_sets.screen_data_type == data_sets_manager.EScreenDataType.sdt_Tiles4x4)
{
shift_tiles_data(block_n, _data);
}
else
{
_data.dec_screen_tiles(( ushort )block_n);
_data.dec_patterns_tiles(( ushort )block_n);
}
--block_n;
--size;
}
}
return(deleted_blocks_cnt);
}