我用java创建了一个游戏，现在我只需要添加一个允许用户在60秒以下玩的计时器。我在互联网上搜索并找到了swing和util包的计时器。你能不能给我一个能在我的游戏中使用它的方法???
答案 0 :(得分：3)
如果您想要互动内容，可以使用TimerTask和Timer类：
class ExpireTask extends TimerTask
{
YourClass callbackClass;
ExpireTask(YourClass callbackClass)
{
this.callbackClass = callbackClass;
}
public void run()
{
callbackClass.timeExpired()
}
}
所以现在你有一个计时器可以激活另一个类的timeExpired。现在使用Timer，您可以安排它：
...
Timer timer = new Timer();
timer.schedule(new ExpireTask(callbackClass), 60000 /* 60 secs */);
...
答案 1 :(得分：2)
System.currentMilliSeconds（）; 保存在游戏开始时。 然后比较一下： 如果（厘米≤（System.currentMilliSeconds（）/ 1000年至1060年））{System.exit（0）;}
答案 2 :(得分：0)
问题是，当您安排任务时，该任务在不同的线程上运行，您怎么可能用它来更改在另一个线程上运行的玩家回合，而无需在整个执行过程中进行变量检查就知道何时回调函数被调用。
我还添加了一些示例代码。
public class CustomTimerTask extends TimerTask {
private ServerGameManager gameManager;
public CustomTimerTask(ServerGameManager gameManager){
this.gameManager= gameManager;
}
@Override
public void run() {
gameManager.changeTurn();
}}
这是我自定义的Timer类，将调用gameManager方法，但是该方法不会停止游戏循环以将回合转给另一位玩家。
private void playGame() {
while (true) {
try {
int turnDelay = 1000;
int turnSeconds = 30;
java.util.Timer timer = new java.util.Timer();
timer.scheduleAtFixedRate(new CustomTimerTask(this), 0, turnDelay);
try {
// Send player turn color to clients
//ToDo change method to return to start whenever the update method is called
toPlayerOne.writeObject(turn);
toPlayerTwo.writeObject(turn);
// Get turn from client.
if (playerOne.getColor() == turn) {
move = (Move) fromPlayerOne.readObject();
move.setStart(9 - move.getStart().x, 9 - move.getStart().y);
move.setEnd(9 - move.getEnd().x, 9 - move.getEnd().y);
} else {
move = (Move) fromPlayerTwo.readObject();
}
Move moveToPlayerOne = new Move(), moveToPlayerTwo = new Move();
// Register move on the board.
// If there is no piece at the end (normal move, no attack)
if (board.getSquare(move.getEnd().x, move.getEnd().y).getPiece() == null) {
Piece piece = board.getSquare(move.getStart().x, move.getStart().y).getPiece();
board.getSquare(move.getStart().x, move.getStart().y).setPiece(null);
board.getSquare(move.getEnd().x, move.getEnd().y).setPiece(piece);
// Rotate the move 180 degrees before sending.
moveToPlayerOne.setStart(new Point(9 - move.getStart().x, 9 - move.getStart().y));
moveToPlayerOne.setEnd(new Point(9 - move.getEnd().x, 9 - move.getEnd().y));
moveToPlayerOne.setMoveColor(move.getMoveColor());
moveToPlayerOne.setStartPiece(null);
moveToPlayerOne.setEndPiece(piece);
moveToPlayerTwo.setStart(new Point(move.getStart().x, move.getStart().y));
moveToPlayerTwo.setEnd(new Point(move.getEnd().x, move.getEnd().y));
moveToPlayerTwo.setMoveColor(move.getMoveColor());
moveToPlayerTwo.setStartPiece(null);
moveToPlayerTwo.setEndPiece(piece);
} else {
Piece attackingPiece = board.getSquare(move.getStart().x, move.getStart().y).getPiece();
Piece defendingPiece = board.getSquare(move.getEnd().x, move.getEnd().y).getPiece();
BattleOutcome outcome = attackingPiece.getPieceType().attack(defendingPiece.getPieceType());
moveToPlayerOne.setAttackMove(true);
moveToPlayerTwo.setAttackMove(true);
if (outcome == BattleOutcome.WIN) {
board.getSquare(move.getEnd().x, move.getEnd().y).setPiece(board.getSquare(move.getStart().x, move.getStart().y).getPiece());
board.getSquare(move.getStart().x, move.getStart().y).setPiece(null);
// Rotate the move 180 degrees before sending.
moveToPlayerOne.setStart(new Point(9 - move.getStart().x, 9 - move.getStart().y));
moveToPlayerOne.setEnd(new Point(9 - move.getEnd().x, 9 - move.getEnd().y));
moveToPlayerOne.setMoveColor(move.getMoveColor());
moveToPlayerOne.setStartPiece(null);
moveToPlayerOne.setEndPiece(attackingPiece);
moveToPlayerOne.setAttackWin(true);
moveToPlayerOne.setDefendWin(false);
moveToPlayerTwo.setStart(new Point(move.getStart().x, move.getStart().y));
moveToPlayerTwo.setEnd(new Point(move.getEnd().x, move.getEnd().y));
moveToPlayerTwo.setMoveColor(move.getMoveColor());
moveToPlayerTwo.setStartPiece(null);
moveToPlayerTwo.setEndPiece(attackingPiece);
moveToPlayerTwo.setAttackWin(true);
moveToPlayerTwo.setDefendWin(false);
} else if (outcome == BattleOutcome.LOSE) {
board.getSquare(move.getStart().x, move.getStart().y).setPiece(null);
// Rotate the move 180 degrees before sending.
moveToPlayerOne.setStart(new Point(9 - move.getStart().x, 9 - move.getStart().y));
moveToPlayerOne.setEnd(new Point(9 - move.getEnd().x, 9 - move.getEnd().y));
moveToPlayerOne.setMoveColor(move.getMoveColor());
moveToPlayerOne.setStartPiece(null);
moveToPlayerOne.setEndPiece(defendingPiece);
moveToPlayerOne.setAttackWin(false);
moveToPlayerOne.setDefendWin(true);
moveToPlayerTwo.setStart(new Point(move.getStart().x, move.getStart().y));
moveToPlayerTwo.setEnd(new Point(move.getEnd().x, move.getEnd().y));
moveToPlayerTwo.setMoveColor(move.getMoveColor());
moveToPlayerTwo.setStartPiece(null);
moveToPlayerTwo.setEndPiece(defendingPiece);
moveToPlayerTwo.setAttackWin(false);
moveToPlayerTwo.setDefendWin(true);
} else if (outcome == BattleOutcome.DRAW) {
board.getSquare(move.getStart().x, move.getStart().y).setPiece(null);
board.getSquare(move.getEnd().x, move.getEnd().y).setPiece(null);
// Rotate the move 180 degrees before sending.
moveToPlayerOne.setStart(new Point(9 - move.getStart().x, 9 - move.getStart().y));
moveToPlayerOne.setEnd(new Point(9 - move.getEnd().x, 9 - move.getEnd().y));
moveToPlayerOne.setMoveColor(move.getMoveColor());
moveToPlayerOne.setStartPiece(null);
moveToPlayerOne.setEndPiece(null);
moveToPlayerOne.setAttackWin(false);
moveToPlayerOne.setDefendWin(false);
moveToPlayerTwo.setStart(new Point(move.getStart().x, move.getStart().y));
moveToPlayerTwo.setEnd(new Point(move.getEnd().x, move.getEnd().y));
moveToPlayerTwo.setMoveColor(move.getMoveColor());
moveToPlayerTwo.setStartPiece(null);
moveToPlayerTwo.setEndPiece(null);
moveToPlayerTwo.setAttackWin(false);
moveToPlayerTwo.setDefendWin(false);
}
}
GameStatus winCondition = checkWinCondition();
toPlayerOne.writeObject(moveToPlayerOne);
toPlayerTwo.writeObject(moveToPlayerTwo);
toPlayerOne.writeObject(winCondition);
toPlayerTwo.writeObject(winCondition);
// Change turn color.
//ToDo use this change colors in a daemon that has a timer, this daemon should be located in the client and notify the server whenever the turn has changed
if (turn == PieceColor.RED)
turn = PieceColor.BLUE;
else
turn = PieceColor.RED;
// Check win conditions.
} catch (IOException | ClassNotFoundException e) {
System.out.println(session + "Error occured during network I/O");
return;
}
} catch (Exception e) {
System.out.println("CATCH");
if (turn == PieceColor.RED)
turn = PieceColor.BLUE;
else
turn = PieceColor.RED;
}
}
}
这是始终执行的游戏循环（我知道如果游戏暂停，我应该添加一个条件来停止）
这里的问题是如何执行changeTurn()方法，以在执行游戏时停止游戏循环。
我想到的第一种方法是使用异常，但这不会起作用，因为它们是两个单独的线程，因此异常在CustomTimerTask处停止。