Small game cases of aircraft dodging bullets

                      Small game cases of aircraft dodging bullets 

Today's online world , A variety of small games emerge in endlessly , But with the development of the game industry , Some small games fade out of the players' vision , Some small games are changed to other forms by programmers according to the preferences of current players , Continue to accompany the player . Although I pay less attention to these small games , But my childhood memories of playing games didn't fade out . About this case , I remember playing such a similar plane game when I was a child , Unlike what I wrote, there are no hostile planes in my game , Only bullets . The bullet will not disappear, but will bounce after touching the edge of the window , Players must operate the aircraft to move and avoid , Until I can't hide , The plane will be destroyed , The code will remember when you have to play , The survival time of ejecting the plane after you lose .
use JFrame Game window implementation , Put on the background picture 、 Picture of the plane , Regenerate shells

Sleep through threads 、 Redraw , Generate animation .
Operation of the aircraft
public void drawSelf(Graphics g) {
if(live) {
g.drawImage(img, (int)x, (int)y, null);
if(left) {
x -=speed;
}
if(right) {
x +=speed;
}
if(top) {
y -=speed;
}
if(down) {
y +=speed;
}
}else {
}
}
Modify coordinate values , When redrawing , The position of the aircraft will change .
The flight angle of the shell , And the return effect of the shell when it touches the end
double degree;
public shell() {
x = 200;
y = 200;
width = 10;
height =10;
speed = 3;
degree =Math.random()Math.PI2;
System.out.println(“ Round table rate ”+degree);
}

 public void draw(Graphics g) {
	// TODO Auto-generated method stub
     Color c =g.getColor();
     g.setColor(Color.YELLOW);
     g.fillOval((int)x, (int)y, width, height);
     x +=speed*Math.cos(degree);
     y +=speed*Math.sin(degree);
    
     if(x<0||x>Constant.GAME_WIDTH-width) {
    	 degree = Math.PI-degree;
     }
     
     if(y<30||y>Constant.GAME_HIGHT-height) {
    	 degree =-degree;
     }
}

The shell touched the plane and made it explode
Intersects Will judge whether the range of two objects coincides , Return after coincidence true, Return to the position of the aircraft , Judgment for true after , Traverse the prepared pictures , Replace the picture of the aircraft in the position of the aircraft , Produce the effect of aircraft explosion .
The code is roughly like this , I'm not first-hand at the code .