public ArrayList getPossibleMoves(Desk desk, short currentPlayer, bool firstMoveOnly = false)
{
int[,] fields = desk.getFields();
int x, y, size = desk.getSize();
ArrayList possibleMoves = new ArrayList();
bool forcedMoves = false;
short opositePlayer = getOppositePlayer(currentPlayer);
ArrayList playerFields = null;
ArrayList playerFieldsCopy = new ArrayList();
//get current player fields
if (currentPlayer == GameVar.PLAYER_WHITE)
{
playerFields = desk.getPlayerFields(GameVar.PLAYER_WHITE);
}
else if (currentPlayer == GameVar.PLAYER_BLACK)
{
playerFields = desk.getPlayerFields(GameVar.PLAYER_BLACK);
}
//make player_fields_copy, because while move inspected player_fields change
foreach (var field in playerFields)
{
playerFieldsCopy.Add(field);
}
int playerFieldsCnt = playerFieldsCopy.Count;
for (int i = 0; i < playerFieldsCnt; i++) //loop player fields
{
x = (int)(playerFieldsCopy[i] as Array).GetValue(0);
y = (int)(playerFieldsCopy[i] as Array).GetValue(1);
//get possible jumps
ArrayList possible_jumps = getPossibleJumps(desk, x, y, currentPlayer);
if (possible_jumps.Count > 0)
{
if (!forcedMoves) //forced jump found, do not inspect normal moves anymore
{
possibleMoves.Clear();
forcedMoves = true;
}
foreach (Move jump in possible_jumps)
{
addMove(possibleMoves, jump); //add jump move to results
}
if (firstMoveOnly)
{
return(possibleMoves);
}
}
if (!forcedMoves) //inspect normal moves only when no forced jump found
{
int newX = 0;
int newY = 0;
//loop normal moves directions
for (int k = 0; k < directionsNormal[currentPlayer].Length; k++)
{
if (directionsNormal[currentPlayer][k] == GameVar.DIR_UP)
{
newX = x;
newY = y + 1;
}
else if (directionsNormal[currentPlayer][k] == GameVar.DIR_UP_LEFT)
{
newX = x - 1;
newY = y + 1;
}
else if (directionsNormal[currentPlayer][k] == GameVar.DIR_UP_RIGHT)
{
newX = x + 1;
newY = y + 1;
}
else if (directionsNormal[currentPlayer][k] == GameVar.DIR_DOWN)
{
newX = x;
newY = y - 1;
}
else if (directionsNormal[currentPlayer][k] == GameVar.DIR_DOWN_LEFT)
{
newX = x - 1;
newY = y - 1;
}
else if (directionsNormal[currentPlayer][k] == GameVar.DIR_DOWN_RIGHT)
{
newX = x + 1;
newY = y - 1;
}
if (GameVar.isValidField(newX, newY, deskSize) && fields[newX, newY] == GameVar.FIELD_EMPTY)
{
addMove(possibleMoves, x, y, newX, newY); //add normal move to results
if (firstMoveOnly)
{
return(possibleMoves);
}
}
}
}
}
return(possibleMoves);
}
public ArrayList getPossibleJumps(Desk desk, int x, int y, short currentPlayer)
{
ArrayList possibleJumps = new ArrayList();
ArrayList jumpsFound = new ArrayList();
Move newMove;
int[,] fields = desk.getFields();
int xIncrement = 0;
int yIncrement = 0;
int[] targetCoords;
short opposite_player = getOppositePlayer(currentPlayer);
//loop all possible diretions for jump
for (int i = 0; i < directionsJump.Length; i++)
{
if (directionsJump[i] == GameVar.DIR_UP_LEFT)
{
xIncrement = -1;
yIncrement = 1;
}
else if (directionsJump[i] == GameVar.DIR_UP)
{
xIncrement = 0;
yIncrement = 1;
}
else if (directionsJump[i] == GameVar.DIR_UP_RIGHT)
{
xIncrement = 1;
yIncrement = 1;
}
else if (directionsJump[i] == GameVar.DIR_RIGHT)
{
xIncrement = 1;
yIncrement = 0;
}
else if (directionsJump[i] == GameVar.DIR_LEFT)
{
xIncrement = -1;
yIncrement = 0;
}
else if (directionsJump[i] == GameVar.DIR_DOWN_LEFT)
{
xIncrement = -1;
yIncrement = -1;
}
else if (directionsJump[i] == GameVar.DIR_DOWN)
{
xIncrement = 0;
yIncrement = -1;
}
else if (directionsJump[i] == GameVar.DIR_DOWN_RIGHT)
{
xIncrement = 1;
yIncrement = -1;
}
//get target coords of possible jump
targetCoords = canJump(fields, x, y, xIncrement, yIncrement, currentPlayer);
if (targetCoords == null) //no jump possible
{
continue;
}
int targetCoordsX = targetCoords[0];
int targetCoordsY = targetCoords[1];
//create new (master) move, make it on desk and inspect again from new position - in case multiple jump
newMove = new Move(x, y, targetCoordsX, targetCoordsY);
newMove.addRemoveField(targetCoordsX - xIncrement, targetCoordsY - yIncrement);
desk.makeMove(newMove);
jumpsFound = getPossibleJumps(desk, targetCoordsX, targetCoordsY, currentPlayer);
desk.undoMove(newMove);
//multiple jump found
if (jumpsFound.Count > 0)
{
foreach (Move jump in jumpsFound) //loop multiple jump fractals, add for master jump
{
jump.addOverField(jump.getFrom()[0], jump.getFrom()[1]);
jump.addRemoveField(jump.getFrom()[0] - xIncrement, jump.getFrom()[1] - yIncrement);
jump.setFrom(x, y);
possibleJumps.Add(jump);
}
}
else
{
possibleJumps.Add(newMove); //no (more) multijumps, add master jump to results
}
}
return(possibleJumps);
}
