/*
* returns false if no move has been made previously
*
* it undo's the previous move
*/
protected static boolean undoMove() {
if (movesStack.size() <= 1) return false;
Move currentPos = movesStack.pop();
Move prevPos = movesStack.peek();
if (!tourDraw || !tourRunning) return true;
// Undo the current position
if ((currentPos.row + currentPos.col) % 2 == 0) colorSquare(currentPos, Color.white);
else colorSquare(currentPos, Color.black);
if ((prevPos.row + prevPos.col) % 2 == 0) colorSquare(prevPos, Color.white);
else colorSquare(prevPos, Color.black);
drawKnight(prevPos);
// delay(delayTime);
return true;
}
/**
* This function simulates a move of the current knight.
*
* @param nextPos : Next position of the knight
* @return: True if position is legal; false otherwise
*/
protected static boolean makeMove(Move nextPos) // -----need
{
if (movesStack.size() >= boardSize * boardSize || !isNextMoveValid(nextPos)) return false;
Move currentPos = (!movesStack.empty()) ? movesStack.peek() : null;
movesStack.push(nextPos);
movesCounter++;
updatePerformanceCounter(movesCounter);
if (!tourDraw || !tourRunning) return true;
if (currentPos != null) {
// Draw the number of the last position
colorSquare(currentPos, Color.yellow);
drawNumber(currentPos, movesStack.size() - 1);
}
drawKnight(nextPos);
// delay(1);
return true;
}
private static void drawKnight(Move position) {
drawKnight(position.row, position.col);
}
// Callbacks
private void drawButtonActionActionPerformed(ActionEvent event) {
drawChessPattern();
drawKnight(new Move(knightRow, knightColumn));
}
