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https://github.com/polserver/polserver
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21577d8e5b
* tidy * Automated clang-tidy change: modernize-concat-nested-namespaces * compile test * fix namespace --------- Co-authored-by: Clang Tidy <clang-tidy@users.noreply.github.com>
54 lines
1.3 KiB
C++
54 lines
1.3 KiB
C++
/** @file
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*
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* @par History
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*/
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#include "filemapserver.h"
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#include <string>
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#include "../clib/passert.h"
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namespace Pol::Plib
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{
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FileMapServer::FileMapServer( const RealmDescriptor& descriptor )
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: MapServer( descriptor ), _mapfile(), _cur_mapblock_index( -1L )
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{
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std::string filename = _descriptor.path( "base.dat" );
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_mapfile.Open( filename, std::ios::in );
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_mapfile.Read( _cur_mapblock );
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_cur_mapblock_index = 0;
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}
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MAPCELL FileMapServer::GetMapCell( unsigned short x, unsigned short y ) const
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{
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passert( x < _descriptor.width && y < _descriptor.height );
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unsigned short xblock = x >> MAPBLOCK_SHIFT;
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unsigned short xcell = x & MAPBLOCK_CELLMASK;
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unsigned short yblock = y >> MAPBLOCK_SHIFT;
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unsigned short ycell = y & MAPBLOCK_CELLMASK;
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int block_index = yblock * ( _descriptor.width >> MAPBLOCK_SHIFT ) + xblock;
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if ( block_index != _cur_mapblock_index )
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{
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// read the existing block in
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std::fstream::pos_type offset = block_index * sizeof( _cur_mapblock );
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_mapfile.Seek( offset );
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_mapfile.Read( _cur_mapblock );
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_cur_mapblock_index = block_index;
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}
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return _cur_mapblock.cell[xcell][ycell];
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}
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size_t FileMapServer::sizeEstimate() const
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{
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return sizeof( *this ) + MapServer::sizeEstimate() + _mapfile.sizeEstimate();
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}
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} // namespace Pol::Plib
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