Collsion在Java Applet中的檢測，障礙以及玩家正在移動

sir/Ma'am 對不起，由於我是新手，請幫助我檢測橢圓障礙物在螺紋和玩家一個矩形正在箭頭鍵（使用Keylistener）的幫助下移動。這是代碼Collsion在Java Applet中的檢測，障礙以及玩家正在移動

public void init() 
{ 
    r = new Rectangle(0, 0, 50, 20); 
    addKeyListener(this); 
    Collision(); 

} 
public void Collision() 
    { 
     if((r.x==x_pos) || (r.y==y_pos)) 
     System.exit(0); 
    } 

    public void paint (Graphics g) 
{ 
    g.drawString("first click the left button of mouse keeping it over the rectangle then move the rectangle by arrow keys",20,10); 

    g.fillRect(r.x, r.y, r.width, r.height); 
    g.setColor (Color.red); 
    g.fillOval (x_pos , 10 , 2*radius, 2*radius); 
    g.setColor (Color.black); 
    g.fillOval (10 , y_pos , 4*radius, 1*radius); 
    g.setColor (Color.pink); 
    g.fillOval (x_pos , 40 , 2*radius, 2*radius); 
    g.setColor (Color.yellow); 
    g.fillOval (x_pos , 120 , 4*radius, 2*radius); 
    g.setColor (Color.gray); 
    g.fillOval (120 , y_pos , 2*radius, 1*radius); 
    g.setColor (Color.orange); 
    g.fillOval (x_pos , 150, 2*radius, 2*radius); 
    g.setColor (Color.magenta); 
    g.fillOval (x_pos, 260 , 3*radius, 2*radius); 
    g.setColor (Color.cyan); 
    g.fillOval (240 , y_pos , 2*radius, 2*radius); 
    g.setColor (Color.green); 
    g.fillOval (280 , y_pos , 2*radius, 2*radius); 
    g.setColor (Color.blue); 
    g.fillOval (x_pos , 290 , 2*radius, 2*radius); 
    g.setColor (Color.orange); 
    g.fillOval (x_pos , y_pos , 2*radius, 2*radius); 
    g.setColor (Color.magenta); 
    g.fillOval (x_pos , 360 , 2*radius, 2*radius); 
    g.setColor (Color.darkGray); 
    g.fillOval (x_pos , 390 , 2*radius, 2*radius); 

} 


public void start() 
{ 

    Thread th1 = new Thread (this); 
    th1.start(); 

} 

       public void stop() 
{ 

} 

public void destroy() 
{ 

} 

public void run() 
{ 

    while(true) 
    { 

     x_pos++; 
     try 
     { 
      Thread.sleep(10); 
     } 
     catch(InterruptedException e){} 
     if(x_pos++> getSize().width) 
     x_pos=0; 
     repaint(); 

     y_pos++; 
     try 
     { 
      Thread.sleep(10); 
     } 
     catch(InterruptedException e){} 
     if(y_pos++> getSize().height) 
     y_pos=0; 
     repaint(); 

    } 
    } 


    public void keyPressed(KeyEvent e) 
    { 
     int keyCode = e.getKeyCode(); 

     if(keyCode == KeyEvent.VK_LEFT) 
     { 
      r.x -= 10; 
      if(r.x < 0) 
      r.x = 0; 
      repaint(); 
     } 
     else if(keyCode == KeyEvent.VK_RIGHT) 
     { 
      r.x += 10; 
      if(r.x > getSize().width-r.width) 
      { 
       r.x = getSize().width-r.width; 
      } 
      repaint(); 
     } 
     else if(keyCode == KeyEvent.VK_UP) 
     { 
      r.y -= 10; 
      if(r.y < 0) r.y = 0; 
      repaint(); 
     } 
     else if(keyCode == KeyEvent.VK_DOWN) 
     { 
      r.y += 10; 
      if(r.y > getSize().height-r.height) 
      { 
       r.y = getSize().height-r.height; 
      } 
      repaint(); 
     } 

    } 
     public void keyReleased(KeyEvent e){} 
     public void keyTyped(KeyEvent e){}

}

來源

2012-07-24 Preeti Chaurasia

Plz添加完整的課程。 – 2012-07-24 11:26:08

1.刪除所有不必要的代碼。 2.在發佈之前進行格式化。 3.你的問題是什麼？ – Keppil 2012-07-24 11:26:20

這是一個基本的乒乓遊戲的代碼也許它會解決你的問題，幫助....

package com.piyush; 

import java.awt.Color; 
import java.awt.Graphics; 
import java.awt.event.KeyEvent; 

import javax.swing.JPanel; 

public class GamePanel extends JPanel implements Runnable{ 

boolean player1Flag1,player1Flag2, player2Flag1, player2Flag2; 
boolean flag,gameOver; 
private int ballX = 10, ballY = 100, player1X=10, player1Y=100, player2X=230, player2Y=100; 
int scorePlayer1=0, scorePlayer2=0; 
int right=5; // to the right 
int left= -5; //to the left 
int up=5; // upward 
int down= -5; // down 
int width, height; // Width and height of the ball 

Thread t; 

public GamePanel() { 
    super(); 
    flag=true; 
    this.setBackground(Color.GRAY); 
    t=new Thread(this); 
    t.start(); 
    // TODO Auto-generated constructor stub 
} 
public void keyPressed(KeyEvent evt) 
{ 
    switch(evt.getKeyCode()) 
    { 

     case KeyEvent.VK_W : 
      player1Flag1 = true; 
      break; 
     case KeyEvent.VK_S : 
      player1Flag2 = true; 
      break; 


     case KeyEvent.VK_UP: 
      player2Flag1=true; 
      break; 
     case KeyEvent.VK_DOWN: 
      player2Flag2=true; 
      break; 
    } 

} 
public void keyReleased(KeyEvent evt) 
{ 
    switch(evt.getKeyCode()) 
    { 

     case KeyEvent.VK_W : 
      player1Flag1 = false; 
      break; 
     case KeyEvent.VK_S : 
      player1Flag2 = false; 
      break; 


     case KeyEvent.VK_UP: 
      player2Flag1=false; 
      break; 
     case KeyEvent.VK_DOWN: 
      player2Flag2=false; 
      break; 
    } 

} 

public void paintComponent(Graphics gc){ 

    super.paintComponent(gc); 


    gc.setColor(Color.black); 
    gc.fillOval(ballX, ballY, 8,8); 


    gc.fillRect(player1X, player1Y, 10, 25); 
    gc.fillRect(player2X, player2Y, 10, 25); 


    gc.drawString("Player1: "+scorePlayer1, 25, 10); 
    gc.drawString("Player2: "+scorePlayer2, 150, 10); 

    if(gameOver) 
     gc.drawString("Game Over", 100, 125); 
} 


public void positionBall(int nx, int ny) 
{ 
    ballX= nx; 
    ballY= ny; 
    this.width=this.getWidth(); 
    this.height=this.getHeight(); 
    repaint(); 
} 
public void moverPlayer1() 
    { 
     if (player1Flag1 == true && player1Y >= 0) 
      player1Y += down; 
     if (player1Flag2 == true && player1Y <= (this.getHeight()-25)) 
      player1Y += up; 
     positionPlayer1(player1X, player1Y); 
    } 


    public void moverPlayer2() 
    { 
     if (player2Flag1 == true && player2Y >= 0) 
      player2Y += down; 
     if (player2Flag2 == true && player2Y <= (this.getHeight()-25)) 
      player2Y += up; 
     positionPlayer2(player2X, player2Y); 
    } 


    public void positionPlayer1(int x, int y){ 
     this.player1X=x; 
     this.player1Y=y; 
     repaint(); 
    } 

    public void positionPlayer2(int x, int y){ 
     this.player2X=x; 
     this.player2Y=y; 
     repaint(); 
    } 

@Override 
public void run() { 
    boolean rToL=false; 
    boolean dToU=false; 

    while(true){ 

     if(flag){ 

     if (rToL) 
     { 

      ballX += right; 
      if (ballX >= (width - 8)) 
       rToL= false; 
     } 
     else 
     { 

      ballX += left; 
      if (ballX <= 0) 
       rToL = true; 
     } 



     if (dToU) 
     { 

      ballY += up; 
      if (ballY >= (height - 8)) 
       dToU= false; 

     } 
     else 
     { 

      ballY += down; 
      if (ballY <= 0) 
       dToU = true; 
     } 
     positionBall(ballX, ballY); 


     try 
     { 
      Thread.sleep(50); 
     } 
     catch(InterruptedException ex) 
     { 

     } 


     moverPlayer1(); 


     moverPlayer2(); 


     if (ballX >= (width - 8)) 
      scorePlayer1++; 


     if (ballX == 0) 
      scorePlayer2++; 


     if(scorePlayer1==5 || scorePlayer2==5){ 
      flag=false; 
      gameOver=true; 
     } 


     if(ballX==player1X+10 && ballY>=player1Y && ballY<=(player1Y+25)) 
      rToL=true; 


     if(ballX==(player2X-5) && ballY>=player2Y && ballY<=(player2Y+25)) 
      rToL=false; 
     } 
    } 

} 

}

，並且測試類如下：

package com.piyush; 

import java.awt.BorderLayout; 
import java.awt.Color; 
import java.awt.Dimension; 
import java.awt.Rectangle; 
import java.awt.event.KeyAdapter; 
import java.awt.event.KeyEvent; 

import javax.swing.JFrame; 
import javax.swing.JPanel; 
import javax.swing.SwingUtilities; 

    public class Test extends JFrame{ 


private JPanel jContentPane = null; 

private GamePanel panel = null; 

private GamePanel getPanel() { 
    if (panel == null) { 
     panel = new GamePanel(); 
    } 
    return panel; 
} 

/** 
* This is the default constructor 
*/ 
public Test() { 
    super(); 
    initialize(); 
      this.addKeyListener(new KeyAdapter() { 

     public void keyPressed(KeyEvent evt) { 
      formKeyPressed(evt); 
     } 

     public void keyReleased(KeyEvent evt) { 
      formKeyReleased(evt); 
     } 
    }); 

} 


private void formKeyPressed(KeyEvent evt) 
{ 
    panel.keyPressed(evt); 
} 

private void formKeyReleased(KeyEvent evt) 
{ 
    panel.keyReleased(evt); 
} 


private void initialize() { 
    this.setResizable(false); 
    this.setBounds(new Rectangle(312, 184, 250, 250)); 
    this.setMinimumSize(new Dimension(250, 250)); 
    this.setMaximumSize(new Dimension(250, 250)); 
    this.setBackground(Color.gray);  
    this.setContentPane(getJContentPane()); 
    this.setTitle("Pong"); 
} 

/** 
* This method initializes jContentPane 
* 
* @return javax.swing.JPanel 
*/ 
private JPanel getJContentPane() { 
    if (jContentPane == null) { 
     jContentPane = new JPanel(); 
     jContentPane.setLayout(new BorderLayout()); 
     jContentPane.add(getPanel(), BorderLayout.CENTER); 
     jContentPane.setBackground(Color.gray); 
    } 
    return jContentPane; 
} 

public static void main(String[] args) { 
    // TODO Auto-generated method stub 
    SwingUtilities.invokeLater(new Runnable() { 
     public void run() { 
      Test m = new Test(); 
      m.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 
      m.setVisible(true); 
     } 
    }); 
} 

}

讓我知道如果你不明白任何部分。

來源

2012-07-24 11:31:22

謝謝你懸掛piyush，我已經解決了我的問題..謝謝你 – 2012-07-24 12:32:51

如果你發現我的答案有用而不是接受它，並將問題標記爲已解決。 – 2012-07-24 12:55:55

Collsion在Java Applet中的檢測，障礙以及玩家正在移動

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