List<ILocation> BishopMoves(IPiece piece)
{
List<ILocation> list = new List<ILocation>();
ILocation target;
// move se
for (int x = piece.X + 1, y = piece.Y + 1; x <= Board._MAX_BOUNDS && y <= Board._MAX_BOUNDS; x++, y++)
{
target = new Location(x, y);
if (ColorCollision(piece.Color, target))
break;
else if (Collision(target))
{
list.Add(target);
break;
}
else
list.Add(target);
}
// move sw
for (int x = piece.X - 1, y = piece.Y + 1; x >= Board._MIN_BOUNDS && y <= Board._MAX_BOUNDS; x--, y++)
{
target = new Location(x, y);
if (ColorCollision(piece.Color, target))
break;
else if (Collision(target))
{
list.Add(target);
break;
}
else
list.Add(target);
}
// move ne
for (int x = piece.X + 1, y = piece.Y - 1; x <= Board._MAX_BOUNDS && y >= Board._MIN_BOUNDS; x++, y--)
{
target = new Location(x, y);
if (ColorCollision(piece.Color, target))
break;
else if (Collision(target))
{
list.Add(target);
break;
}
else
list.Add(target);
}
// move nw
for (int x = piece.X - 1, y = piece.Y - 1; x >= Board._MIN_BOUNDS && y >= Board._MIN_BOUNDS; x--, y--)
{
target = new Location(x, y);
if (ColorCollision(piece.Color, target))
break;
else if (Collision(target))
{
list.Add(target);
break;
}
else
list.Add(target);
}
return list;
}
List<ILocation> RookMoves(IPiece piece)
{
List<ILocation> list = new List<ILocation>();
ILocation target;
// move right
for(int x = piece.X + 1; x <= 8; x++)
{
target = new Location(x, piece.Y);
if (ColorCollision(piece.Color, target))
break;
else if (Collision(target))
{
list.Add(target);
break;
}
else
list.Add(target);
}
// move left
for (int x = piece.X - 1; x > 0; x--)
{
target = new Location(x, piece.Y);
if (ColorCollision(piece.Color, target))
break;
else if (Collision(target))
{
list.Add(target);
break;
}
else
list.Add(target);
}
// move up
for (int y = piece.Y - 1; y > 0; y--)
{
target = new Location(piece.X, y);
if (ColorCollision(piece.Color, target))
break;
else if (Collision(target))
{
list.Add(target);
break;
}
else
list.Add(target);
}
// move down
for (int y = piece.Y + 1; y <= 8; y++)
{
target = new Location(piece.X, y);
if (ColorCollision(piece.Color, target))
break;
else if (Collision(target))
{
list.Add(target);
break;
}
else
list.Add(target);
}
return list;
}
List<ILocation> KnightMoves(IPiece piece)
{
List<ILocation> list = new List<ILocation>();
ILocation target;
// move right
target = new Location(piece.X + 2, piece.Y + 1);
if (Board.IsInBounds(target))
if (!ColorCollision(piece.Color, target))
list.Add(target);
target = new Location(piece.X + 2, piece.Y - 1);
if (Board.IsInBounds(target))
if (!ColorCollision(piece.Color, target))
list.Add(target);
// move left
target = new Location(piece.X - 2, piece.Y + 1);
if (Board.IsInBounds(target))
if (!ColorCollision(piece.Color, target))
list.Add(target);
target = new Location(piece.X - 2, piece.Y - 1);
if (Board.IsInBounds(target))
if (!ColorCollision(piece.Color, target))
list.Add(target);
// move up
target = new Location(piece.X + 1, piece.Y - 2);
if (Board.IsInBounds(target))
if (!ColorCollision(piece.Color, target))
list.Add(target);
target = new Location(piece.X - 1, piece.Y - 2);
if (Board.IsInBounds(target))
if (!ColorCollision(piece.Color, target))
list.Add(target);
// move down
target = new Location(piece.X + 1, piece.Y + 2);
if (Board.IsInBounds(target))
if (!ColorCollision(piece.Color, target))
list.Add(target);
target = new Location(piece.X - 1, piece.Y + 2);
if (Board.IsInBounds(target))
if (!ColorCollision(piece.Color, target))
list.Add(target);
return list;
}
List<ILocation> PawnMoves(IPiece piece)
{
List<ILocation> list = new List<ILocation>();
int direction = 1;
if (piece.Color == Color.white)
direction = -1;
ILocation target;
if ((piece.Y == 2 && piece.Color == Color.black) | (piece.Y == 7 && piece.Color == Color.white))
{
target = new Location(piece.X, piece.Y + 2 * direction);
if (!CollisionFromTo(piece.Location, target) && !Collision(target))
list.Add(target);
}
// straight forward
target = new Location(piece.X, piece.Y + 1 * direction);
if (Board.IsInBounds(target))
if (!Collision(target))
{
list.Add(target);
}
// move forward east
target = new Location(piece.X + 1, piece.Y + 1 * direction);
if (Board.IsInBounds(target))
if (!ColorCollision(piece.Color, target) && Collision(target))
{
list.Add(target);
}
// move foward west
target = new Location(piece.X - 1, piece.Y + 1 * direction);
if (Board.IsInBounds(target))
if (!ColorCollision(piece.Color, target) && Collision(target))
{
list.Add(target);
}
return list;
}
List<ILocation> KingMoves(IPiece piece)
{
List<ILocation> list = new List<ILocation>();
ILocation target;
// move up
if(piece.Y != Board._MIN_BOUNDS)
{
target = new Location(piece.X, piece.Y - 1);
if (!ColorCollision(piece.Color, target))
list.Add(target);
if(piece.X != Board._MIN_BOUNDS)
{
target = new Location(piece.X - 1, piece.Y - 1);
if (!ColorCollision(piece.Color, target))
list.Add(target);
}
if(piece.X != Board._MAX_BOUNDS)
{
target = new Location(piece.X + 1, piece.Y - 1);
if (!ColorCollision(piece.Color, target))
list.Add(target);
}
}
// move down
if (piece.Y != Board._MAX_BOUNDS)
{
target = new Location(piece.X, piece.Y + 1);
if (!ColorCollision(piece.Color, target))
list.Add(target);
if (piece.X != Board._MIN_BOUNDS)
{
target = new Location(piece.X - 1, piece.Y + 1);
if (!ColorCollision(piece.Color, target))
list.Add(target);
}
if (piece.X != Board._MAX_BOUNDS)
{
target = new Location(piece.X + 1, piece.Y + 1);
if (!ColorCollision(piece.Color, target))
list.Add(target);
}
}
// move right
if (piece.X != Board._MAX_BOUNDS)
{
target = new Location(piece.X + 1, piece.Y);
if (!ColorCollision(piece.Color, target))
list.Add(target);
}
// move left
if (piece.X != Board._MIN_BOUNDS)
{
target = new Location(piece.X - 1, piece.Y);
if (!ColorCollision(piece.Color, target))
list.Add(target);
}
return list;
}