JAVA小游戏“飞翔的小鸟”
第一步是创建项目 项目名自拟
第二步创建个包名 来规范class
再创建一个包 来存储照片
如下：
代码如下：
package game;
import java.awt.*;
import javax.swing.*;
import javax.imageio.ImageIO;
public class Bird {
Image image;
int x,y;
int width,height;
int size;
double g;
double t;
double v0;
double speed;
double s;
double alpha;
//֡
Image[] images;
int index;
public Bird() throws Exception
{
image=new ImageIcon("source/0.png").getImage();
width = image.getWidth(null);
height = image.getHeight(null);
x=132;
y=280;
size=40;
g=4;
v0=20;
t=0.25;
speed=v0;
s=0;
alpha=0;
images=new Image[8];
for(int i=0;i<8;i++)
{
images[i]=new ImageIcon("source/"+i+".png").getImage();
}
index=0;
}
public void fly()
{
index++;
image=images[(index/12)%8];
}
public void step()
{
double v0=speed;
s=v0*t+g*t*t/2;
y=y-(int)s;
double v=v0-g*t;
speed =v;
alpha=Math.atan(s/8);
}
public void flappy()
{
speed=v0;
}
public boolean hit(Ground ground)
{
boolean hit =y+size/2>ground.y;
if(hit)
{
y=ground.y-size/2;
alpha=Math.PI/2;
}
return hit;
}
public boolean hit(Column column)
{
if(x>column.x-column.width/2-size/2&&x
if(y>column.y-column.gap/2+size/2&&y
}
return false;
}
}
package game;
import javax.imageio.ImageIO;
import java.util.*;
import javax.swing.*;
import java.awt.Graphics;
import java.awt.event.MouseAdapter;
import java.awt.event.*;
import java.awt.image.BufferedImage;
import javax.imageio.*;
import java.awt.*;
public class BirdGame extends JPanel {
Image background;
Image startImage;
Image overImage;
Ground ground;//����
Column column1,column2;
Bird bird;
int score;
int state;//״̬
//״̬����
public static final int START=0;
public static final int RUNNING=1;
public static final int GAME_OVER=2;
public BirdGame() throws Exception
{
background = new ImageIcon("./source/bg.png").getImage();
startImage = new ImageIcon("./source/start.png").getImage();
overImage=new ImageIcon("./source/gameover.png").getImage();
//״̬
ground=new Ground();
column1=new Column(1);
column2=new Column(2);
bird=new Bird();
score=0;
state=0;
}
public void paint(Graphics g)
{
g.drawImage(background, 0, 0,null);
g.drawImage(ground.image, ground.x, ground.y, null);
g.drawImage(column1.image,column1.x-column1.width/2,column1.y-column1.height/2,null);
g.drawImage(column2.image,column2.x-column2.width/2,column2.y-column2.height/2,null);
Graphics2D g2=(Graphics2D) g;
g2.rotate(-bird.alpha,bird.x,bird.y);
g.drawImage(bird.image,bird.x-bird.width/2,bird.y-bird.height/2,null);
g2.rotate(bird.alpha,bird.x,bird.y);
Font f=new Font(Font.SANS_SERIF,Font.BOLD,40);
g.setFont(f);
g.drawString(""+score, 40, 60);
g.setColor(Color.WHITE);
g.drawString(""+score,40-3, 60-3);
switch(state)
{
case START:
g.drawImage(startImage, 0, 0, null);
break;
case GAME_OVER:
g.drawImage(overImage, 0, 0, null);
break;
}
}
public void action() throws Exception
{
MouseListener l=new MouseAdapter()
{
public void mousePressed(MouseEvent e)
{
try {
switch(state) {
case START:
//״̬
state=RUNNING;
break;
case RUNNING:
bird.flappy();
break;
case GAME_OVER:
column1=new Column(1);
column2=new Column(2);
bird=new Bird();
score=0;
state=START;
break;
}
}
catch (Exception ex)
{
ex.printStackTrace();
}
}
};
addMouseListener(l);
while(true)
{
switch(state)
{
case START:
bird.fly();
ground.step();
break;
case RUNNING:
ground.step();
column1.step();
column2.step();
bird.fly();
bird.step();
score++;
//
if(bird.hit(ground)||bird.hit(column1)||bird.hit(column2))
{
state=GAME_OVER;
}
break;
}
Thread.sleep(1000/60);
repaint();
}
}
public static void main(String[] args) throws Exception
{
JFrame frame=new JFrame();
BirdGame game=new BirdGame();
frame.add(game);
frame.setSize(440,670);
frame.setLocationRelativeTo(null);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setVisible(true);
game.action();
}
}
package game;
import java.util.*;
import java.awt.*;
import javax.imageio.ImageIO;
import javax.swing.*;
public class Column {
Image image;
int x,y;
int width,height;
int gap;
int distance;
Random random =new Random();
public Column(int n) throws Exception
{
image=new ImageIcon("source/column.png").getImage();
width=image.getWidth(null);
height=image.getHeight(null);
gap=144;
distance=245;
x=550+(n-1)*distance;
y=random.nextInt(218)+132;
}
public void step()
{
x-=4;
if(x<= -width/2)
{
x=distance*2-width/2;
y=random.nextInt(218);
}
}
}
package game;
import javax.swing.*;
import java.awt.*;
public class Ground {
Image image;
int x,y;
int width,height;
public Ground() throws Exception
{
image =new ImageIcon("source/ground.png").getImage();
width=image.getWidth(null);
height=image.getHeight(null);
x=0;
y=500;
}
public void step()
{
x-=4;
if(x<=-109)
{
x=0;
}
}
}
运行结果如下所示：
