mirror of
https://github.com/polserver/polserver
synced 2026-08-13 08:23:08 -04:00
48 lines
1 KiB
C++
48 lines
1 KiB
C++
/** @file
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*
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* @par History
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*/
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#include "maptileserver.h"
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namespace Pol
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{
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namespace Plib
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{
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MapTileServer::MapTileServer( const RealmDescriptor& descriptor )
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: _descriptor( descriptor ),
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_file( _descriptor.path( "maptile.dat" ), std::ios::in ),
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_cur_block_index( -1L )
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{
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_file.Read( _cur_block );
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_cur_block_index = 0;
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}
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MAPTILE_CELL MapTileServer::GetMapTile( unsigned short x, unsigned short y )
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{
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unsigned short xblock = x >> MAPTILE_SHIFT;
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unsigned short xcell = x & MAPTILE_CELLMASK;
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unsigned short yblock = y >> MAPTILE_SHIFT;
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unsigned short ycell = y & MAPTILE_CELLMASK;
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int block_index = yblock * ( _descriptor.width >> MAPTILE_SHIFT ) + xblock;
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if ( block_index != _cur_block_index )
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{
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size_t offset = block_index * sizeof _cur_block;
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_file.Seek( offset );
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_file.Read( _cur_block );
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_cur_block_index = block_index;
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}
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return _cur_block.cell[xcell][ycell];
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}
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size_t MapTileServer::sizeEstimate() const
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{
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return sizeof( *this ) + _descriptor.sizeEstimate() + _file.sizeEstimate();
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}
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}
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}
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