Map Decorate( Map map )
{
Map newmap(map);
int bounds[4][2] = {
{ 1, 0 },
{ -1, 0 },
{ 0, 1 },
{ 0, -1 }
};
for( int x = 0; x < map.Width(); x++ )
for( int y = 0; y < map.Height(); y++ )
{
int hnb=0,vnb=0;
for( int i = 0; i < 2; i++ )
hnb += (map.GetScroll( x + bounds[i][0], y + bounds[i][1] ) == Map::BLOCK_FREE ? 0 : 1);
for( int i = 2; i < 4; i++ )
vnb += (map.GetScroll( x + bounds[i][0], y + bounds[i][1] ) == Map::BLOCK_FREE ? 0 : 1);
if( (hnb - vnb == 0 || hnb + vnb == 1 ) && map.Get( x, y ) != Map::BLOCK_FREE ) newmap.Set(x, y, 2);
}
return newmap;
}
Map Flatten( Map map )
{
Map newmap(map);
int bounds[8][2] = {
{ 1, 0 },
{ 1, 1 },
{ 0, 1 },
{ -1, 1 },
{ -1, 0 },
{ -1, -1 },
{ 0, -1 },
{ 1, -1 }
};
for( int x = 0; x < map.Width(); x++ )
for( int y = 0; y < map.Height(); y++ )
{
int nb=0;
for( int i = 0; i < 8; i++ ) nb += (map.GetScroll(x + bounds[i][0], y + bounds[i][1]) == Map::BLOCK_FREE ? 0 : 1);
if( nb == 8 ) newmap.Set(x, y, Map::BLOCK_FREE);
}
return newmap;
}