private bool HasEdge(int x, int y, Direction dir)
{
Room.Tile tile = room.GetTile(x, y);
Room.Tile.TerrainType terrain = tile.Terrain;
Room.SlopeDirection slope = (terrain == Room.Tile.TerrainType.Slope) ? room.IdentifySlope(x, y) : Room.SlopeDirection.Broken;
if (terrain == Room.Tile.TerrainType.Solid)
{
return(true);
}
if (terrain == Room.Tile.TerrainType.Air ||
terrain == Room.Tile.TerrainType.ShortcutEntrance ||
terrain == Room.Tile.TerrainType.Floor)
{
return(false);
}
switch (dir)
{
case Direction.Up:
return(slope == Room.SlopeDirection.DownRight || slope == Room.SlopeDirection.DownLeft);
case Direction.Right:
return(slope == Room.SlopeDirection.UpLeft || slope == Room.SlopeDirection.DownLeft);
case Direction.Down:
return(slope == Room.SlopeDirection.UpRight || slope == Room.SlopeDirection.UpLeft);
case Direction.Left:
return(slope == Room.SlopeDirection.DownRight || slope == Room.SlopeDirection.UpRight);
}
return(false);
}
public void UpdateMapper(int iterations)
{
Room.Tile[,] tiles = _tiles;
for (int i = 0; i < iterations; i++)
{
switch (state)
{
case MappingState.FindingEdges:
{
Room.Tile tile = tiles[_x, _y];
Room.Tile.TerrainType terrain = tile.Terrain;
Room.SlopeDirection slope = (terrain == Room.Tile.TerrainType.Slope) ? room.IdentifySlope(_x, _y) : Room.SlopeDirection.Broken;
if (HasEdge(_x, _y, Direction.Left) && !HasEdge(_x - 1, _y, Direction.Right))
{
AddEdge(_x, _y, Direction.Left);
}
if (HasEdge(_x, _y, Direction.Down) && !HasEdge(_x, _y - 1, Direction.Up))
{
AddEdge(_x, _y, Direction.Down);
}
if (HasEdge(_x, _y, Direction.Right) && !HasEdge(_x + 1, _y, Direction.Left))
{
AddEdge(_x, _y, Direction.Right);
}
if (HasEdge(_x, _y, Direction.Up) && !HasEdge(_x, _y + 1, Direction.Down))
{
AddEdge(_x, _y, Direction.Up);
}
if (slope != Room.SlopeDirection.Broken)
{
AddSlopeEdge(_x, _y, slope);
}
_x++;
if (_x >= room.TileWidth)
{
_x = 0;
_y++;
if (_y >= room.TileHeight)
{
_y = corners.Count;
state = MappingState.DuplicatingPoints;
}
}
}
break;
case MappingState.DuplicatingPoints:
{
corners.Add(corners[_x]);
_x++;
if (_x >= _y)
{
state = MappingState.Done;
_x = 0;
_y = 0;
}
}
break;
case MappingState.Done:
return;
}
}
}