public bool valid(string direction, Tile t)
{
switch (direction)
{
case "above":
if(t.Y -1 >= 0)
return true;
break;
case "below":
if(t.Y + 1 < this.MapHeight)
return true;
break;
case "left":
if(t.X -1 >= 0)
return true;
break;
case "right":
if (t.X + 1 < this.MapWidth)
return true;
break;
default: return false;
}
return false;
}
public Tile getadjacentTile(string direction, Tile t)
{
switch (direction)
{
case "above":
if (t.Y - 1 >= 0)
return Tiles[t.Y-1,t.X];
break;
case "below":
if (t.Y + 1 < this.MapHeight)
return Tiles[t.Y + 1, t.X];
break;
case "left":
if (t.X - 1 >= 0)
return Tiles[t.Y, t.X - 1];
break;
case "right":
if (t.X + 1 < this.MapWidth)
return Tiles[t.Y, t.X + 1];
break;
default: return t;
}
return t;
}
public List<Tile> adjacentPassible(Tile t)
{
List<Tile> adjacentTilesPassible = new List<Tile>();
if (valid("above", t))
{
Tile tile = getadjacentTile("above", t);
if (tile.Passable) adjacentTilesPassible.Add(tile);
}
if (valid("below", t))
{
Tile tile = getadjacentTile("below", t);
if (tile.Passable) adjacentTilesPassible.Add(tile);
}
if (valid("left", t))
{
Tile tile = getadjacentTile("left", t);
if (tile.Passable) adjacentTilesPassible.Add(tile);
}
if (valid("right", t))
{
Tile tile = getadjacentTile("right", t);
if (tile.Passable) adjacentTilesPassible.Add(tile);
}
return adjacentTilesPassible;
}
// Check and see if the tile collection has valid adjacent
// Tile addresses (horizontal and vertical
// return the a list of these tiles
public List<Tile> adjacentTo(Tile t)
{
List<Tile> adjacentTiles = new List<Tile>();
if (valid("above", t))
adjacentTiles.Add(getadjacentTile("above", t));
if (valid("below", t))
adjacentTiles.Add(getadjacentTile("below", t));
if (valid("left", t))
adjacentTiles.Add(getadjacentTile("left", t));
if (valid("right", t))
adjacentTiles.Add(getadjacentTile("right", t));
return adjacentTiles;
}
Vector2 TileDifference(Tile t1, Tile t2)
{
Vector2 v1 = new Vector2(t1.X, t1.Y) * tileWidth;
Vector2 v2 = new Vector2(t2.X, t2.Y) * tileWidth;
Vector2 result = v1 - v2;
return result;
}