我正在使用 eclipse 在 java 中进行 pacman 克隆,有时它看起来很滞后,更具体地说是 pacman/ghosts 的移动很慢,有时很好。一旦它在我运行它时发生,所以它不是在我添加代码之后,它似乎也不是在游戏中的任何特定事件之后。我找不到任何触发器或故意产生滞后
资源管理器显示相同的 cpu 使用率(仅 50% 左右)/内存使用率。此外,FPS 似乎一直在 200 左右,通过滞后和运行良好的时期。
有谁知道这可能是什么?
有没有我遗漏的信息可以使用?
编辑-我基于计时器的运动是不是很糟糕?我将在下面发布与运动相关的代码,有没有一种好的方法可以在这里发布整个代码?
Timer movement = new Timer(20, new ActionListener()//500 is time in milliseconds between
//calls to actionPerformed as far as I know.
{
public void actionPerformed(ActionEvent arg0)
{
if(movingUp == true)
{
moveUp();
}
else if(movingDown == true)
{
moveDown();
}
else if(movingRight == true)
{
moveRight();
}
else if(movingLeft == true)
{
moveLeft();
}
}
});
public void moveUp()
{
yPos -= 1;
this.rect.y -= 1;
}
public void setDirUp()
{
movingUp = true;
movingDown = false;
movingRight = false;
movingLeft = false;
}
在 public void keyPressed 的主类中:
if(keyCode == KeyEvent.VK_W)
{
if(pacMan.isUpHittingWall == false)
{
pacMan.setDirUp();
pacMan.isDownHittingWall = false;
pacMan.isRightHittingWall = false;
pacMan.isLeftHittingWall = false;
}
}
编辑 2 - 感谢您的帮助。我现在使用系统时间进行移动,它似乎已经解决了这个问题,因为我一开始只为 pacman 实现了它,而且幽灵仍然很慢。现在有一个问题,向右和向下移动比向左或向上移动慢得多。我看到的唯一区别是向右和向下都是加法,向左和向上是减法。我能做些什么呢?
更新后的代码如下。
//updated movement code
public void moveUp(long timePassed)
{
yPos -= vy * timePassed;
this.rect.y -= vy * timePassed;
}
public void moveDown(long timePassed)
{
yPos += vy * timePassed;
this.rect.y += vy * timePassed;
}
public void moveRight(long timePassed)
{
xPos += vx * timePassed;
this.rect.x += vx * timePassed;
}
public void moveLeft(long timePassed)
{
xPos -= vx * timePassed;
this.rect.x -= vx * timePassed;
}
//I passed timePassed through a globalInputObject because my input is handled in public //void keyPressed(KeyEvent e) and I didnt know how else to get timePassed in to the //movement method
//Here is the code in gameLoop()
globalInputObject.isPacManMovingUp(timePassed);
globalInputObject.isPacManMovingDown(timePassed);
globalInputObject.isPacManMovingRight(timePassed);
globalInputObject.isPacManMovingLeft(timePassed);
//This is inside the GlobalInputObject
public void isPacManMovingUp(long timePassed)
{
if(pacMan.movingUp == true)
{
pacMan.moveUp(timePassed);
}
}
public void isPacManMovingDown(long timePassed)
{
if(pacMan.movingDown == true)
{
pacMan.moveDown(timePassed);
}
}
public void isPacManMovingRight(long timePassed)
{
if(pacMan.movingRight == true)
{
pacMan.moveRight(timePassed);
}
}
public void isPacManMovingLeft(long timePassed)
{
if(pacMan.movingLeft == true)
{
pacMan.moveLeft(timePassed);
}
}