如何让玩家在没有速度的情况下跳过java中的对象

Question

我的问题是我想让我的角色（玩家）跳过我稍后会添加的对象。我以为Tile Collision会起作用，但我不了解它的方方面面。除了我的游戏一次只有一个级别，而不是整个游戏。

这是我到目前为止所拥有的。 （我没有写代码让玩家跳上任何东西，因为我不知道从哪里开始）：

Game.java：

public class Game extends gameLoop{

    public void init()
    {
        setSize(854,480);
        Thread th = new Thread(this);
        th.start();
        offscreen = createImage(854, 480);
        d = offscreen.getGraphics();
        addKeyListener(this);

    }

    public void paint(Graphics g){
        d.clearRect(0, 0, 854, 480);
        d.drawImage(background, 0 , 0 , this);
        d.drawImage(Player, x, y, this);
        g.drawImage(offscreen, 0 , 0, this);    
    }
    public void update(Graphics g){
        paint(g);
    }
}

gameLoop.java：

public class gameLoop extends Applet implements Runnable, KeyListener {

    public int x ,y;
    public Image offscreen;
    public Graphics d;
    public boolean up, down, left, right;
    public BufferedImage background, run1, run2, run3, run4, run5, run6, run7, run8, runL1, runL2, runL3, runL4, runL5, stand, Player;
    public int counter;
    public int counterLeft;
    public double counter2 = 4; 


    public void run(){
        x = 100;
        y = 100;
        try {
            background = ImageIO.read(new File("background2.png"));
            stand = ImageIO.read(new File("stick.gif"));
            run1 = ImageIO.read(new File("Runner.png"));
            run2 = ImageIO.read(new File("Runner1.png"));
            run3 = ImageIO.read(new File("Runner2.png"));
            run4 = ImageIO.read(new File("Runner3.png"));
            run5 = ImageIO.read(new File("Runner4.png"));
            runL1 = ImageIO.read(new File("Runner(1).png"));
            runL2 = ImageIO.read(new File("Runner1(1).png"));
            runL3 = ImageIO.read(new File("Runner2(1).png"));
            runL4 = ImageIO.read(new File("Runner3(1).png"));
            runL5 = ImageIO.read(new File("Runner4(1).png"));

        } catch (IOException e1) {
            e1.printStackTrace();
        }

        Player = stand;
        while(true){
            if(y <= 319 && up != true){
                y+=10;
            }



            counter++;
            counterLeft ++;
            if (counter >= 90){
                counter = 0;
            }
            if (counter >= 10 &&  right == true && left == false){
                Player = run1;
            }
            if (counter >= 20 &&  right == true && left == false){
                Player = run2;
            }
            if (counter >= 30 &&  right == true && left == false){
                Player = run3;
            }
            if (counter >= 40 &&  right == true && left == false){
                Player = run4;
            }
            if (counter >= 50 &&   right == true && left == false){
                Player = run5;
            }
            if (counter >= 60 &&  right == true && left == false){
                Player = run1;
            }
            if (counter >= 70 &&  right == true && left == false){
                Player = run2;
            }
            if(counter >= 80 && right == true && left == false){
                Player = run3;
            }

            // LEFT
            if (counterLeft >= 55){
                counterLeft = 0;
            }
            if (counterLeft >= 10 &&  left == true && right == false){
                Player = runL1;
            }
            if (counterLeft >= 20 &&  left == true && right == false){
                Player = runL2;
            }
            if (counterLeft >= 30 && left == true && right == false){
                Player = runL3;
             }
            if (counterLeft >= 40 && left == true && right == false){
                Player = runL4;
            }
            if (counterLeft >= 50 && left == true && right == false){
                Player = runL5;
            }




            if (left == true){
                x--;
            }
            if (right == true){
                x++;
            }

            if (up == true){
                counter2 += 0.05;
                y = y + (int) ((Math.sin(counter2) + Math.cos(counter2))* 5);
                if(counter2 >= 7){
                    counter2 = 4;

                }
            }
            if(down == true){
                y++;
            }
            if(y >= 319){
                y = 319;
            }


            repaint();
            try {
                Thread.sleep(5);
            }catch (InterruptedException e) {
                e.printStackTrace();
            }

        }
        }



    public void keyPressed(KeyEvent e) {
        if (e.getKeyCode() == 37 && e.getKeyCode() != 38){ //left
            left = true;
        }
        if (e.getKeyCode() == 38 && e.getKeyCode() != 37){ //up or jump
            up = true;
        }
        if (e.getKeyCode() == 39){ //right
            right = true;
        }
        if (e.getKeyCode() == 40){ //down
            down = true;
        }

    }


    public void keyReleased(KeyEvent e) {
        if (e.getKeyCode() == 37){  
            left = false;
            Player = stand;
        }
        if (e.getKeyCode() == 38){
            up = false;
            Player = stand;

        }
        if (e.getKeyCode() == 39){
            right = false;
            Player = stand;
        }
        if (e.getKeyCode() == 40){
            down = false;
            Player = stand;
        }
    }


    public void keyTyped(KeyEvent e) {}
}

到目前为止，他所能做的就是跑步和跳跃。