internal bool Fits(Tile other)
{
SideHash[] sides = new SideHash[] {
other.GetHashForSide(Sides.Left),
other.GetHashForSide(Sides.Top),
other.GetHashForSide(Sides.Right),
other.GetHashForSide(Sides.Bottom)
};
//Top
if (this.LeftTile == 0 && FitsLeft(other, sides))
{
return(true);
}
//Right
if (this.RightTile == 0 && FitsRight(other, sides))
{
return(true);
}
//Bottom
if (this.BottomTile == 0 && FitsBottom(other, sides))
{
return(true);
}
//Left
if (this.TopTile == 0 && FitsTop(other, sides))
{
return(true);
}
return(false);
}
private bool FitsLeft(Tile other, SideHash[] otherHashes)
{
SideHash sideHash = GetHashForSide(Sides.Left);
for (int i = 0; i < otherHashes.Length; i++)
{
SideHash otherHash = otherHashes[i];
if (sideHash.Match(otherHash, out bool flip))
{
this.SetTile(Sides.Left, other.Id);
other.SetTile(Sides.Right, this.Id);
other.RotateAndFlip((2 - i), false, flip);
return(true);
}
}
return(false);
}
private bool FitsBottom(Tile other, SideHash[] otherHashes)
{
SideHash sideHash = GetHashForSide(Sides.Bottom);
for (int i = 0; i < otherHashes.Length; i++)
{
SideHash otherHash = otherHashes[i];
if (sideHash.Match(otherHash, out bool flip))
{
this.SetTile(Sides.Bottom, other.Id);
other.SetTile(Sides.Top, this.Id);
other.RotateAndFlip((1 - i), flip, false);
return(true);
}
}
return(false);
}