我目前正在编写一个简单的破砖游戏，但是我遇到了一个巨大的障碍。我宣称的碰撞有时会在错误的砖块上发生，同时还有很多内部弹跳的球。最重要的是，绘制非命中区块的循环超出范围，但无论我多么努力修补它，我都无法解决它。任何帮助将非常感激。提前谢谢。
import java.applet.*;
import java.awt.*;
import java.awt.event.*;
public class brickBreakerApplet extends Applet implements Runnable, KeyListener, MouseListener, MouseMotionListener
{
private int speed;
int currentLine;
int x_pos = 30;
int y_pos = 100;
int x_speed = 1;
int y_speed = 1;
int radius = 5;
int appletsize_x = 400;
int appletsize_y = 300;
int mousex=0;
int mousey=0;
int score=0;
int life=3;
int counter=0;
int[] bricks;
Boolean game=false;
Image background;
private Image dbImage;
private Graphics dbg;
public void init()
{
setBackground (Color.blue);
background = getImage(getCodeBase(), "background.gif");
bricks=new int[50];
for (int x=0; x<50; x++){
bricks[x]=1;
}
currentLine = 10;
addKeyListener(this);
addMouseListener(this);
addMouseMotionListener(this);
}
public void start ()
{
Thread th = new Thread (this);
th.start ();
}
public void stop()
{
}
public void keyPressed(KeyEvent e)
{
if (e.getKeyChar() == 'r'){
x_pos=0;
y_pos=0;
x_speed=1;
y_speed=1;
}
currentLine+=20;
}
public void keyReleased(KeyEvent e)
{
// System.out.println("User released key " + e.getKeyChar());
// currentLine+=20;
}
public void keyTyped(KeyEvent e)
{
}
public void mouseClicked(MouseEvent e)
{
// System.out.println("User clicked mouse " + e.getClickCount() + " times!");
// currentLine+=20;
}
public void mouseEntered(MouseEvent e)
{
// System.out.println("Mouse entered applet at " + e.getX() + " " + e.getY());
// currentLine += 20;
}
public void mouseExited(MouseEvent e)
{
}
public void mousePressed(MouseEvent e)
{
if (game==false){
x_speed=1;
y_speed=-1;
game=true;
}
if (life==0){
x_pos=0;
y_pos=0;
x_speed=1;
y_speed=1;
life=3;
score=0;
game=false;
}
}
public void mouseReleased(MouseEvent e)
{
}
public void mouseMoved(MouseEvent e)
{
mousex=e.getX();
mousey=e.getY();
}
public void mouseDragged(MouseEvent e)
{
}
public void destroy()
{
}
public void run ()
{
Thread.currentThread().setPriority(Thread.MIN_PRIORITY);
while (true)
{
if (x_pos > appletsize_x - radius)
{
if (x_speed==1){
x_speed = -1;
}
if (x_speed==2){
x_speed = -2;
}
}
else if (x_pos < radius)
{
if (x_speed==-1){
x_speed = +1;
}
if (x_speed==-2){
x_speed= 2;
}
}
else if (y_pos < radius)
{
y_speed = +1;
}
else if (y_pos > appletsize_y - radius)
{
death();
}
if (game==true){
x_pos += x_speed;
y_pos += y_speed;
//HITTING TWICE, LOTS OF ERRORS WHILE RUNNING CODE, ASK SIR FOR ASSISTANCE TOMORROW. LOOKS PRETTY GOOD THOUGH.
counter=0;
for (int y=0; y<5; y++){
for (int x=0; x<10; x++){
if (y_pos-(radius)==(40+y*10) &&((x_pos+(radius)>=(x*40) && (x_pos+radius<= 40+(x*40)))) && bricks[counter]==1 && y_speed==-1){
bricks[counter]=0;
score++;
y_speed=1;
}
counter++;
}
}
counter=0;
for (int y=0; y<5; y++){
for (int x=0; x<10; x++){
if (y_pos+(radius)==(30+y*10) && ((x_pos+(radius)>=(x*40) && (x_pos+radius<= 40+(x*40)))) && bricks[counter]==1 && y_speed==1){
bricks[counter]=0;
score++;
y_speed=-1;
}
counter++;
}
}
counter=0;
for (int y=0; y<5; y++){
for (int x=0; x<10; x++){
if (x_pos+radius==(x*40) && ((y_pos>=(30+(y*10)) && (y_pos<= 40+(y*10)))) && bricks[counter]==1){
bricks[counter]=0;
score++;
x_speed=-1;
}
counter++;
}
}
counter=0;
for (int y=0; y<5; y++){
for (int x=0; x<10; x++){
if (x_pos-radius==(40+(x*40)) && ((y_pos>=(30+(y*10)) && (y_pos<= 40+(y*10)))) && bricks[counter]==1){
bricks[counter]=0;
score++;
x_speed=1;
}
counter++;
}
}
if (y_pos >= 280-(radius))
{
{
if ((x_pos+(radius) >= mousex-30) && (x_pos+(radius) <= mousex-20)){
score++;
difficulty();
x_speed=-2;
java.awt.Toolkit.getDefaultToolkit().beep();
}
if ((x_pos+(radius) >= mousex-20) && (x_pos+(radius) <= mousex)){
score++;
difficulty();
x_speed=-1;
java.awt.Toolkit.getDefaultToolkit().beep();
}
if ((x_pos+(radius) >= mousex) && (x_pos+(radius) <= mousex+20)){
score++;
difficulty();
x_speed=1;
java.awt.Toolkit.getDefaultToolkit().beep();
}
if ((x_pos+(radius) >= mousex+20) && (x_pos+(radius) <= mousex+30)){
score++;
difficulty();
x_speed=2;
java.awt.Toolkit.getDefaultToolkit().beep();
}
}
}
}
if (game==false){
x_pos=mousex;
y_pos= 279-radius;
}
repaint();
try
{
Thread.sleep (5);
}
catch (InterruptedException ex)
{
// do nothing
}
Thread.currentThread().setPriority(Thread.MAX_PRIORITY);
}
}
public void update (Graphics g)
{
if (dbImage == null)
{
dbImage = createImage (this.getSize().width, this.getSize().height);
dbg = dbImage.getGraphics ();
}
dbg.setColor (getBackground ());
dbg.fillRect (0, 0, this.getSize().width, this.getSize().height);
dbg.setColor (getForeground());
paint (dbg);
g.drawImage (dbImage, 0, 0, this);
}
public void paint (Graphics g)
{
if (life>0){
g.drawImage(background,0,0,this);
g.setColor (Color.cyan);
g.fillOval (x_pos - radius, y_pos - radius, 2 * radius, 2 * radius);
g.setColor (Color.blue);
g.fillRect (mousex-30, 280, 60, 5);
g.setFont(new Font("Comic Sans MS", Font.PLAIN, 20));
g.setColor (Color.cyan);
g.drawString ("Score: "+score, 5,20);
g.drawString ("Life: "+life, 330,20);
counter=0;
for (int y=0; y<5; y++){
for (int x=0; x<10; x++){
if (bricks[counter]==1){
g.setColor(Color.blue);
g.fillRect(x*40, 30+(y*10),40,10);
g.setColor(Color.black);
g.drawRect(x*40, 30+(y*10),40,10);
}
counter++;
}
}
}
if (life==0){
g.setColor (Color.black);
g.fillRect (0,0,400,400);
g.setColor (Color.white);
g.setFont (new Font("Times New Roman", Font.BOLD, 48));
g.drawString ("GAME OVER", 50, 150);
g.setFont (new Font("Times New Roman", Font.PLAIN, 12));
g.drawString ("To Try Again, Press Screen", 130, 160);
g.drawString ("Your Score Was: "+score, 155, 170);
}
}
public void death ()
{
game=false;
y_pos= 279-radius;
life--;
}
public void difficulty()
{
y_speed=-1;
}
}