/// <summary>
/// This method generates all possible moves for a given location. It will call itself recursively until the endlocation has no further moves left.
/// </summary>
/// <param name="checker"></param>
/// <param name="startLocation"></param>
/// <param name="originalStartLocation">This parameter is needed because otherwise the game thinks this tile is occupied, when in reality it isnt. defaults to checker.Coordinate</param>
/// <param name="doneTiles"></param>
/// <returns></returns>
public IEnumerable <AttackMove> GetMovesForLocation(IGame game, IChecker checker, TileCoordinate startLocation, IPlayer currentPlayer, IPlayer enemyPlayer,
TileCoordinate?originalStartLocation, List <TileCoordinate> doneMoves = null)
{
List <AttackMove> moves = new List <AttackMove>();
//get targets for attackmoves
var potentionalMoves = checker.GetPotentionalMoveCoordinates(game, this, enemyPlayer: enemyPlayer, startingCoordinate: startLocation,
movementType: MovementType.Attack);
var attmoves = potentionalMoves[MovementType.Attack].Where(m => GetPlayerOwnedTiles(enemyPlayer.PlayerNumber).Select(t => t.Coordinate).Contains(m)).Except(doneMoves);
foreach (var attmove in attmoves)
{
var direction = TileCoordinate.GetStepDirection(startLocation, attmove);
var targetCoordinate = attmove;
var locationsAfterJunp = GetPossibleMovesInDirectionAfterAttack(checker, targetCoordinate, direction);
locationsAfterJunp = locationsAfterJunp.Where(l => l.IsValid());
//for each possible location after the jump, this contains all moves afterattackmove
foreach (var locationAfterJunp in locationsAfterJunp)
{
var tile = this.FirstOrDefault(t => t.Coordinate == locationAfterJunp);
bool locationAfterJunpFree = (tile.Coordinate == originalStartLocation || //original location is always free, since the attacking checker started there
tile.Checker == null);
if (!locationAfterJunpFree) //if theres a checker on the final tile, go onto next potentional move
{
continue;
}
var targetChecker = this.FirstOrDefault(t => t.Coordinate == targetCoordinate).Checker;
doneMoves.Add(targetCoordinate); //add to donetiles, so the game knows it cant jump on it again this turn
IEnumerable <AttackMove> movesAfterJump = GetMovesForLocation(game, checker: checker, startLocation: locationAfterJunp,
currentPlayer: currentPlayer, enemyPlayer: enemyPlayer,
originalStartLocation: originalStartLocation, doneMoves: doneMoves);
movesAfterJump = movesAfterJump.GetOnlyHighestPriorityMoves();
AttackMove move = new AttackMove(checker, targetChecker, startLocation, locationAfterJunp, targetCoordinate, movesAfterJump.ToList());
moves.Add(move);
}
}
return(moves);
}
