[SFML 2.6.2] Auto-Tiled - Program do rysowania mapy

int getTileIndex( int x, int y ) {
    int ttype = terrain_types[ y * size.x + x ];
    return getTileValue( x, y, ttype ) |( getTileValue( x + 1, y, ttype ) << 1 ) |( getTileValue( x, y + 1, ttype ) << 2 ) |( getTileValue( x + 1, y + 1, ttype ) << 3 );
}

int getTileValue( int x, int y, int ttype ) {
   
    if( ttype == terrain_types[ y * size.x + x ] == 0 )
         return( terrain_values[ y * size.x + x ] ) ? 0
        : 1;
    else
         return terrain_values[ y * size.x + x ];
   
}

void editTile( int x, int y, int terrain_type, int terrain_value ) {
   
    terrain_types[ y * size.x + x ] = terrain_type;
    terrain_values[ y * size.x + x ] = terrain_value;
   
    for( int yy = y - 1; yy <= y + 1; yy++ ) {
        for( int xx = x - 1; xx <= x + 1; xx++ ) {
           
            if( xx >= size.x || yy >= size.y || xx < 0 || yy < 0 )
                 continue;
           
            int index = getTileIndex( xx, yy );
            sprites[ yy * size.x + xx ].setTextureRect( sf::IntRect( index * 64 +( yy * 16 ) % 64, terrain_types[ yy * size.x + xx ] * 64 +( xx * 16 ) % 64, 16, 16 ) );
        }
    }
}