public void ApplyMove(Move move)
{
int pos = FindEmptyTile();
// Debug.WriteLine(string.Format("ApplyMove: move is {0}", move.ToString()));
switch (move.Direction)
{
case Move.Moves.Up:
SwapTiles(pos - Order, pos);
break;
case Move.Moves.Left:
SwapTiles(pos - 1, pos);
break;
case Move.Moves.Down:
SwapTiles(pos + Order, pos);
break;
case Move.Moves.Right:
SwapTiles(pos + 1, pos);
break;
case Move.Moves.Start:
case Move.Moves.Solved:
break;
}
}
void perform(Game.Move move)
{
board.perform(move);
}
//Move player given direction based on command
//Checks for boundaries
public bool move(Move where)
{
switch (where)
{
case Move.FORWARD: if (coord.x - 1 < 0) return false; //they hit boundary
//check if tring to walk into blocking object (e.g. walls, monsters)
if (isBarrier(coord.x - 1, coord.y)) return false;
coord.x--; break;
case Move.RIGHT: if (coord.y + 1 > Globals.FLOOR_WIDTH - 1) return false;
if (isBarrier(coord.x, coord.y + 1)) return false;
coord.y++; break;
case Move.BACKWARD: if (coord.x + 1 > Globals.FLOOR_LENGTH - 1) return false;
if (isBarrier(coord.x + 1, coord.y)) return false;
coord.x++; break;
case Move.LEFT: if (coord.y - 1 < 0) return false;
if (isBarrier(coord.x, coord.y - 1)) return false;
coord.y--; break;
default:
return false; //bad direction
}
return true; //success!
}
public Move(Move.Moves direction)
{
Direction = direction;
}
public bool IsSameMove(Move rhs)
{
return Direction == rhs.Direction;
}
public static Board ApplyMove(Board Board, Move Move)
{
var checkForSurrounded = new List<Coordinate>();
var checkForEmpty = new List<byte>();
var sniping = false;
switch ((MoveType)Move.Type)
{
case MoveType.Trade:
{
/*
// Verify move is legal.
// Reject move if attempting to snipe own piece.
if (Move.Triangle % 2 != Board.Header.WhoseTurnNext) throw new InvalidOperationException();
// Reject move if player does not hold at least two tiles.
var heldTileCount = Board.Tiles.Count(t => t.IsHeldBy(Board.Header.WhoseTurnNext));
if (heldTileCount < 2) throw new InvalidOperationException();
// Reject move if there is no enemy piece at the location.
if (Board.GetTriangle(Move.Coordinate) == 0) throw new InvalidOperationException();
*/
// Turn is legal, mutate board.
foreach (var tile in Board.Tiles.Where(t => t.IsHeldBy(Board.Header.WhoseTurnNext)).Take(2))
Board = Board.WithTile(tile.ID, tile.WithStatus(0x03));
Board = Board.WithTile(Move.Tile, Board.GetTile(Move.Tile).WithTriangle(Move.Triangle, 0));
checkForEmpty.Add(Move.Tile);
sniping = true;
}
break;
case MoveType.MovePiece:
{
/*
// Verify move is legal.
// Reject move if attempting to move opponent piece.
if (Move.Triangle % 2 == Board.Header.WhoseTurnNext) throw new InvalidOperationException();
// Reject move if there is no piece at the location.
if (Board.GetTriangle(Move.Coordinate) == 0) throw new InvalidOperationException();
// Find destination triangle coordinate.
*/
var dest = FindMoveNeighbor(Move.Coordinate, Move.Direction);
/*
// Reject move if player attempted to move off board.
if (dest.Invalid) throw new InvalidOperationException();
if (Board.GetTile(dest.Tile).IsOutOfPlay()) throw new InvalidOperationException();
// Reject move if destination triangle is occupied.
if (Board.GetTriangle(dest) != 0) throw new InvalidOperationException();
*/
// Move is legal, mutate board.
Board = Board.WithTile(Move.Tile, Board.GetTile(Move.Tile).WithTriangle(Move.Triangle, 0));
Board = Board.WithTile(dest.Tile, Board.GetTile(dest.Tile).WithTriangle(dest.Triangle, 1));
checkForEmpty.Add(Move.Tile);
for (byte x = 0; x < 3; ++x)
{
var neighbor = FindSurroundNeighbor(dest, x);
if (!neighbor.Invalid && !Board.GetTile(neighbor.Tile).IsOutOfPlay())
checkForSurrounded.Add(neighbor);
}
}
break;
}
while (checkForSurrounded.Count > 0 || checkForEmpty.Count > 0)
{
while (checkForSurrounded.Count > 0)
{
var piece = checkForSurrounded[0];
checkForSurrounded.RemoveAt(0);
var sum = 0;
for (byte x = 0; x < 3; ++x)
{
var neighbor = FindSurroundNeighbor(piece, x);
if (neighbor.Invalid || Board.GetTile(neighbor.Tile).IsOutOfPlay())
sum += 1;
else
sum += Board.GetTriangle(neighbor);
}
if (sum == 3)
{
Board = Board.WithTile(piece.Tile, Board.GetTile(piece.Tile).WithTriangle(piece.Triangle, 0));
checkForEmpty.Add(piece.Tile);
}
}
while (checkForEmpty.Count > 0)
{
var tileID = checkForEmpty[0];
checkForEmpty.RemoveAt(0);
if (!Board.GetTile(tileID).IsEmpty())
continue;
// Tile is empty - if it has 3 or less adjacent tiles in a row, it can be removed.
var runs = new AdjacentRun[3];
var runsCount = 0;
for (var x = 0; x < 6; ++x)
{
var neighbor = Tables.TileAdjacency[tileID][x];
if (neighbor != 0xFF && !Board.GetTile(neighbor).IsOutOfPlay())
{
if (runsCount == 0)
{
runs[0] = new AdjacentRun(x, x, 1);
runsCount += 1;
}
else if (runs[runsCount - 1].End == x - 1)
runs[runsCount - 1] = new AdjacentRun(runs[runsCount - 1].Start, x, runs[runsCount - 1].Count + 1);
else
{
runs[runsCount] = new AdjacentRun(x, x, 1);
runsCount += 1;
}
}
}
if (runsCount > 1 && runs[0].Start == 0 && runs[runsCount - 1].End == 5)
{
runs[0] = new AdjacentRun(runs[runsCount - 1].Start, runs[0].End, runs[0].Count + runs[runsCount - 1].Count);
runsCount -= 1;
}
if (runsCount == 1 && runs[0].Count <= 3)
{
if (sniping)
Board = Board.WithTile(tileID, Board.GetTile(tileID).WithStatus(0x03));
else
Board = Board.WithTile(tileID, Board.GetTile(tileID).WithStatus((byte)(Board.Header.WhoseTurnNext + 1)));
// Mark adjacent triangles for surround consideration.
for (var x = 0; x < 6; ++x)
{
// Don't check own pieces for surround
if (Tables.ExposedAdjacency[x] % 2 != Board.Header.WhoseTurnNext) continue;
// Don't check tiles that don't exist.
var neighbor = Tables.TileAdjacency[tileID][x];
if (neighbor == 0xFF || Board.GetTile(neighbor).IsOutOfPlay()) continue;
checkForSurrounded.Add(new Coordinate(neighbor, Tables.ExposedAdjacency[x]));
}
// Check neighboring tiles to see if they can be removed.
for (var x = 0; x < 6; ++x)
{
var neighbor = Tables.TileAdjacency[tileID][x];
if (neighbor == 0xFF || Board.GetTile(neighbor).IsOutOfPlay()) continue;
checkForEmpty.Add(neighbor);
}
}
}
}
if (Board.Header.WhoseTurnNext == 0)
Board = Board.WithHeader(new StateHeader(0x80));
else
Board = Board.WithHeader(new StateHeader(0x00));
return Board;
}