Java_ Pinball Games

Pinball Game Implementation principle:

Redraw the image at a certain time (less than 1 seconds) because the graphics class is an abstract class that requires rewriting all the methods involved when creating subclasses, so this is done by creating a subclass of the canvas, just overriding its paint () method. Here we use the keyboard to listen to events, Timer class and so on.

Game Description:

The ball in the pinball game increases speed over time and speeds up to 10 of the horizontal and vertical velocities. When the y-coordinate (vertical coordinate) of the ball is greater than the y-coordinate of the racket (vertical coordinate), the game ends. The console shows the speed of the X-direction of the ball and the speed of the Y-direction.

1Import java.awt.*;2ImportJava.util.Random;3ImportJavax.swing.Timer;4Import java.awt.event.*;5PublicClassPinball6{7Private Frame f=New Frame ("Pinball Game");8 Random rand=NewRandom ();9//Width and height of the desktop10PrivateFinalint table_width=300;11PrivateFinalint table_height=400;12//Width and height of racquet, horizontal position, vertical position13PrivateFinalint racket_width=60;14PrivateFinalint racket_height=20;15Privateint Racketx=rand.nextint (24) *10;16Privateint rackety=300;17//The size, speed, and coordinates of the ball18PrivateFinalint ball_size=16;19Privateint yspeed=1;20PrivateDouble xyrate=1;21stPrivateint xspeed= (int) (xyrate*Yspeed);22Privateint Ballx=rand.nextint (284);23Privateint Bally=1;24//Create a canvas25Private MyCanvas tablearea=NewMyCanvas ();26//Defining Time Classes27Timer timer;28//Flag of whether the game is over29PrivateBoolean islose=False;30//Set the game level31Privateint Time_times=1;32PublicvoidInit () {Tablearea.setpreferredsize (NewDimension (table_width,table_height));34F.add (Tablearea);35//Defining keyboard listenersKeyadapter keyprocessor=NewKeyadapter ()37{38Publicvoidkeypressed (KeyEvent ke) {39if (ke.getkeycode () = =Keyevent.vk_left) {40if (racketx>0)racketx-=10;42}43if (ke.getkeycode () = =Keyevent.vk_right) {44if (racketx<table_width-Racket_width)racketx+=10;46}47}4849};50F.addkeylistener (Keyprocessor);51//Tablearea.addkeylistener (Keyprocessor);ActionListener taskperformer=evt->53{54//The ball touches the left or right border.55if (ballx<=0| | ballx>=table_width-Ball_size) {xspeed=-XSpeed;57}58if (bally>rackety-ball_size&& (ballx<racketx| | ballx>racketx+racket_width-Ball_size)) {59Timer.stop ();Islose=True;61Tablearea.repaint ();62}Elseif (bally<=0| | (bally>=rackety-ball_size&&ballx>racketx&&ballx<=racketx+Racket_width)) {yspeed=-Yspeed;64} Bally+=yspeed; Ballx+=xspeed; Tablearea.repaint (); (xspeed<10&&xspeed>-10 && (yspeed<10&&yspeed>-10)) {time_times++; 70} if (time_times==10) {xspeed>0) {xspeed++;}else{, xspeed--, and (yspeed>0) {yspeed++,}e lse{yspeed--, Bayi} time_times-=10; System.out.println (xspeed+ "" +yspeed); 84} 85}; Timer=new timer (100,taskperformer); Timer.start (); F.pack (); F.setvisible (TRUE); The MyCanvas extends Canvas (Graphics g) {94 if (Islose) {G.setcolor 255,0 (new Color, 0)); G.setfont (New Font ("Times", font.bold,30)); g.DrawString ("Game Over", 50,200); 98}else{G.setcolor (New Color (240,240,80)), G.filloval (ballx,bally,ball_size,ball_size); 101 G.setcolor (new Color (80,80,200)); 102 G.fillrect (Racketx,rackety,racket_width,racket_height); 103}104}105}106 public static void Main (string[] args) 107 {108 New Pinball (). Init (); 109}110}

Java_ Pinball Games