/* Highlighting of all possible moves
*/
private void HighlightPossibleTurns(BaseChecker currentSelectedChecker)
{
PathPoint turns = currentSelectedChecker.GetPossibleTurns();
if (!turns.IsDeadEnd())
{
foreach (TurnDirection direction in DirectionHelper.GetAllDirections())
{
foreach (PathPoint point in turns[direction])
{
board[point.Position.X, point.Position.Y].Highlighted = true;
}
}
}
}
/* Calculating the computer's move
*/
public void GetAiTurn(out BaseChecker selectedChecker, out PathPoint toPosition)
{
selectedChecker = null;
toPosition = null;
List <PathPoint> possibleTurns = new List <PathPoint>(); // List of possible moves
// Building a list of possible moves
foreach (BaseChecker checker in Side == CheckerSide.White ? Game.gameplayController.state.WhiteCheckers :
Game.gameplayController.state.BlackCheckers)
{
PathPoint turn = checker.GetPossibleTurns();
if (!turn.IsDeadEnd()) // If not a dead-end point, add a route to the list
{
possibleTurns.Add(turn);
}
}
// If no moves are found - a loss
if (possibleTurns.Count == 0)
{
selectedChecker = null;
toPosition = null;
return;
}
// Trying to find aggressive moves
foreach (PathPoint chain in possibleTurns)
{
List <int> eatableDirections = chain.TryGetAggresiveDirections();
if (eatableDirections.Count > 0)
{
// Aggressive move found
toPosition = chain;
// We find out the path belonging to the checker and leave the method
foreach (BaseChecker checker in Side == CheckerSide.White ? Game.gameplayController.state.WhiteCheckers :
Game.gameplayController.state.BlackCheckers)
{
PathPoint turn = checker.GetPossibleTurns();
if (turn.Position == chain.Position)
{
selectedChecker = checker;
return;
}
}
}
}
// There are no "edible" moves, we are looking for peaceful ones in a random way
Random rnd = new Random();
toPosition = possibleTurns[rnd.Next(possibleTurns.Count - 1)];
// Matching the move with the checker
foreach (BaseChecker checker in Side == CheckerSide.White ? Game.gameplayController.state.WhiteCheckers :
Game.gameplayController.state.BlackCheckers)
{
PathPoint turn = checker.GetPossibleTurns();
if (turn.Position == toPosition.Position)
{
selectedChecker = checker;
}
}
return;
}
/* When you click on the game board, this method is called
*/
public void OnClick(MouseEventArgs mouseArgs)
{
bool anyoneSelected = false;
BaseChecker previouslySelectedChecker = null;
BaseChecker currentSelectedChecker = null;
// Trying to find the selected checker
anyoneSelected = TryFindSelectedCheckers(mouseArgs, ref previouslySelectedChecker, ref currentSelectedChecker);
// If the checker was not selected
if (!anyoneSelected)
{
// If the checker was selected at the last step
if (previouslySelectedChecker != null)
{
// Attempt to move to a given position
Point toBoardPosition = new Point()
{
X = mouseArgs.X / cellSize.Width,
Y = mouseArgs.Y / cellSize.Height
};
DoMovement(previouslySelectedChecker, toBoardPosition);
// Checking the conditions of victory and defeat
CheckVictoryConditions();
}
else
{
// Clicked on an empty field
DeselectAllCheckers();
state.ActiveChecker = null;
state.ActiveCheckerPathPoint = null;
}
}
else
{
// The checker is selected
// Prevent the move by another checker (other than the selected one)
if (state.ActiveChecker != null)
{
if (state.ActiveChecker != currentSelectedChecker)
{
currentSelectedChecker = null;
return;
}
}
List <BaseChecker> turnList = new List <BaseChecker>();
bool aggressive = false;
bool turnFound = false;
foreach (BaseChecker checker in currentSelectedChecker.Side == CheckerSide.White ? state.WhiteCheckers : state.BlackCheckers)
{
PathPoint turns = checker.GetPossibleTurns();
if (turns.IsDeadEnd())
{
continue;
}
if (turns.TryGetAggresiveDirections().Count > 0)
{
turnList.Add(checker);
aggressive = true;
}
}
// Filtering moves (if you can eat something, block "inedible" moves)
if (!aggressive)
{
ClearHighlighting();
HighlightPossibleTurns(currentSelectedChecker); // Highlight it
}
else
{
foreach (BaseChecker checker in turnList)
{
if (checker == currentSelectedChecker)
{
turnFound = true;
}
}
ClearHighlighting();
if (turnFound)
{
HighlightPossibleTurns(currentSelectedChecker);
}
else
{
DeselectAllCheckers();
}
}
}
// Redraw the scene
Game.drawingController.PrioritizedDraw();
// Clearing memory from objects generated by active computation of edible options
GC.Collect();
}