"Father and son of the programming journey-with little Carter to learn Python" 18th Chapter __ Programming

The 18th chapter: a new input-event

18.1 Events
18.2 keyboard Events
18-01

#-*-coding:utf-8-*-#__author__ = ' janvn ' # 2015/08/04 ' Bounce Ball Program, add animated Sprite and Clock.tick () ' Import Pygame,sys pygame.init () Screen=pygame.display.set_mode ([640,480]) background=pygame.
Surface (Screen.get_size ()) Background.fill ([255,255,255]) Clock=pygame.time.clock () #定义一个时间对象 #Ball类, including the Move () method Class Ball (Pygame.sprite.Sprite): def __init__ (self,image_file,speed,location): pygame.sprite.sprite.__init__ ( Self) self.image=pygame.image.load (image_file) self.rect=self.image.get_rect () #得到图像边界的矩阵 Self.rec T.left,self.rect.top=location self.speed=speed def Move (self): if Self.rect.left<=screen.get_rect (). Left or \ self.rect.right>=screen.get_rect (). right:self.speed[0]=-self.speed[0] New Pos=self.rect.move (self.speed) self.rect=newpos my_ball=ball (' beach_ball.png ', [10,0],[20,20]) #横向速度10, vertical speed 0 run Ning=true while Running:for event in Pygame.event.get (): If Event.type==pygamE.quit:running=false Clock.tick (m) #计算时间 (MS), parameter 30 is the maximum frame rate screen.blit (background, (0,0)) My_ball.mo ve () screen.blit (My_ball.image,my_ball.rect) Pygame.display.flip () Pygame.quit ()

18-02 Key Events

#-*-coding:utf-8-*-#__author__ = ' janvn ' # 2015/08/04 ' Bounce Ball program, add animation Sprite and Clock.tick, add key event ' Import Pygame,sys Pygame . Init () Screen=pygame.display.set_mode ([640,480]) background=pygame.
Surface (Screen.get_size ()) Background.fill ([255,255,255]) Clock=pygame.time.clock () #定义一个时间对象 #Ball类, including the Move () method Class Ball (Pygame.sprite.Sprite): def __init__ (self,image_file,speed,location): pygame.sprite.sprite.__init__ ( Self) self.image=pygame.image.load (image_file) self.rect=self.image.get_rect () #得到图像边界的矩阵 Self.rec T.left,self.rect.top=location self.speed=speed def Move (self): if Self.rect.left<=screen.get_rect (). Left or \ self.rect.right>=screen.get_rect (). right:self.speed[0]=-self.speed[0] New Pos=self.rect.move (self.speed) self.rect=newpos my_ball=ball (' beach_ball.png ', [10,0],[20,20]) #横向速度10, vertical speed 0 run Ning=true while Running:for event in Pygame.event.get (): If event.type==Pygame. Quit:running=false elif Event.type==pygame. Keydown:if Event.key==pygame. K_UP: #按下向上键 my_ball.rect.top=my_ball.rect.top-10 #让球上移10个像素 elif event.key==pygame. K_down: #按下向下键 my_ball.rect.top=my_ball.rect.top+10 Clock.tick (ms), parameter 30 is the maximum frame rate screen.bl It (background, (0,0)) My_ball.move () screen.blit (My_ball.image,my_ball.rect) Pygame.display.flip () Pygame.quit (

 )

Add repeat key

#-*-coding:utf-8-*-#__author__ = ' janvn ' # 2015/08/04 ' Bounce Ball program, add animation Sprite and Clock.tick, add key event ' Import Pygame,sys Pygame . Init () Screen=pygame.display.set_mode ([640,480]) background=pygame. Surface (Screen.get_size ()) Background.fill ([255,255,255]) Clock=pygame.time.clock () #定义一个时间对象 #重复按键 delay=100 #开始重复之 How long before waiting interval=50 #按键要以多快的速度重复 pygame.key.set_repeat (delay,interval) #Ball类, including Move () method class Ball (
        Pygame.sprite.Sprite): Def __init__ (self,image_file,speed,location): pygame.sprite.sprite.__init__ (self) Self.image=pygame.image.load (image_file) self.rect=self.image.get_rect () #得到图像边界的矩阵 self.rect.left,self . rect.top=location Self.speed=speed def Move (self): if Self.rect.left<=screen.get_rect (). Left or \ self.rect.right>=screen.get_rect (). right:self.speed[0]=-self.speed[0] Newpos=self.re Ct.move (self.speed) self.rect=newpos my_ball=ball (' beach_ball.png ', [10,0],[20,20]) #横向速度10, longitudinal speed 0 running=true while Running:for event in Pygame.event.get (): If Event.type==pygame. Quit:running=false elif Event.type==pygame. Keydown:if Event.key==pygame. K_UP: #按下向上键 my_ball.rect.top=my_ball.rect.top-10 #让球上移10个像素 elif event.key==pygame. K_down: #按下向下键 my_ball.rect.top=my_ball.rect.top+10 Clock.tick (ms), parameter 30 is the maximum frame rate screen.bl It (background, (0,0)) My_ball.move () screen.blit (My_ball.image,my_ball.rect) Pygame.display.flip () Pygame.quit (

 )

18.3 Mouse Events

#-*-coding:utf-8-*-#__author__ = ' janvn ' # 2015/08/04 ' Bounce Ball program, add animation Sprite and Clock.tick, add keyboard event ' Import Pygame,sys Pygame . Init () Screen=pygame.display.set_mode ([640,480]) background=pygame. Surface (Screen.get_size ()) Background.fill ([255,255,255]) Clock=pygame.time.clock () #定义一个时间对象 #重复按键 delay=100 #开始重复之 How long before waiting interval=50 #按键要以多快的速度重复 pygame.key.set_repeat (delay,interval) Held_down=false #Ball类, including the Move () method class Ball (
        Pygame.sprite.Sprite): Def __init__ (self,image_file,speed,location): pygame.sprite.sprite.__init__ (self) Self.image=pygame.image.load (image_file) self.rect=self.image.get_rect () #得到图像边界的矩阵 self.rect.left,self . rect.top=location Self.speed=speed def Move (self): if Self.rect.left<=screen.get_rect (). Left or \ self.rect.right>=screen.get_rect (). right:self.speed[0]=-self.speed[0] Newpos=self.re Ct.move (self.speed) self.rect=newpos my_ball=ball (' beach_ball.png ', [10,0],[20,20]) #横向速度10, longitudinal speed 0 running=true while Running:for event in Pygame.event.get (): If Event.type==pygame. Quit:running=false elif Event.type==pygame. Mousebuttondown:held_down=true elif Event.type==pygame. Mousebuttonup:held_down=false elif Event.type==pygame. Mousemotion:if held_down:my_ball.rect.center=event.pos #event. Pos Gets the location of the mouse (x,y) clock.ti CK #计算时间 (MS), parameter 30 is the maximum frame rate screen.blit (background, (0,0)) My_ball.move () Screen.blit (My_ball.image,my_ball.rec

 T) Pygame.display.flip () Pygame.quit ()

Timer Events

#-*-coding:utf-8-*-#__author__ = ' janvn ' # 2015/08/04 ' Use a timer event to move the ball up and down ' import Pygame,sys pygame.init () screen =pygame.display.set_mode ([640,480]) background=pygame.
Surface (Screen.get_size ()) Background.fill ([255,255,255]) Clock=pygame.time.clock () #定义一个时间对象 #Ball类, including the Move () method Class Ball (Pygame.sprite.Sprite): def __init__ (self,image_file,speed,location): pygame.sprite.sprite.__init__ ( Self) self.image=pygame.image.load (image_file) self.rect=self.image.get_rect () #得到图像边界的矩阵 Self.rec T.left,self.rect.top=location self.speed=speed def Move (self): if Self.rect.left<=screen.get_rect (). Left or \ self.rect.right>=screen.get_rect (). right:self.speed[0]=-self.speed[0] New Pos=self.rect.move (self.speed) self.rect=newpos my_ball=ball (' beach_ball.png ', [10,0],[20,20]) #横向速度10, longitudinal speed 0 #创建 A timer 1000ms=1 seconds Pygame.time.set_timer (pygame. userevent,1000) Direction=1 Running=true while running:
    For event in Pygame.event.get (): If Event.type==pygame. Quit:running=false elif Event.type==pygame. 
                userevent:my_ball.rect.centery=my_ball.rect.centery+ (30*direction) if my_ball.rect.top<=0 or \   My_ball.rect.bottom>=screen.get_rect (). Bottom:direction=-direction Clock.tick (30)
    #计算时间 (MS), parameter 30 is the maximum frame rate screen.blit (background, (0,0)) My_ball.move () Screen.blit (My_ball.image,my_ball.rect) Pygame.display.flip () Pygame.quit ()

Final Pypong code:

#-*-Coding:utf-8-*-# author:janvn # 2015/08/04 ' The first version of ' Pypong ' import pygame, sys from pygame.locals import * # Class defintion for the ball class Myballclass (pygame.sprite.Sprite): Def __init__ (self, image_file, speed, location) : pygame.sprite.sprite.__init__ (self) self.image = Pygame.image.load (image_file) self.rect = self.
        Image.get_rect () self.rect.left, self.rect.top = Location Self.speed = Speed def move (self): Global Score,score_font,score_surf Self.rect = Self.rect.move (self.speed) # Bounce off the sides of the WI Ndow if Self.rect.left < 0 or self.rect.right > screen.get_width (): self.speed[0] =-self.speed[ 0] # Bounce off the top of the window if Self.rect.top <= 0:self.speed[1] =-self.speed[ 1] score=score+1 Score_surf=score_font.render (str (score), 1, (0,0,0)) # Class definition for the PA Ddle class Mypaddleclass(pygame.sprite.Sprite): Def __init__ (self, location): pygame.sprite.sprite.__init__ (self) IMAGE_SURFAC
        E = Pygame.surface.Surface ([m]) Image_surface.fill ([0,0,0]) Self.image = Image_surface.convert () Self.rect = Self.image.get_rect () self.rect.left, self.rect.top = Location pygame.init () screen = Pygame.dis Play.set_mode ([640,480]) Clock = pygame.time.Clock () Myball = Myballclass (' wackyball.bmp ', [10,5], [M]) #  Stance of the ball Ballgroup = Pygame.sprite.Group (myball) # Add the ball to a sprite Group paddle = Mypaddleclass ([270, ] # Make a instance of the paddle score=0 Score_font=pygame.font.font (none,50) score_surf=score_font.render (str ( Score), 1, (0,0,0)) score_pos=[10,10] lives=3 done=false running = True #主程序 while Running:clock.tick () screen.f Ill ([255, 255, 255]) Screen.blit (score_surf,score_pos) for I in Range (lives): Width=screen.get_rect (). wid Th Screen.blit (MYBALL.IMAGE,[WIDTH-40*I,20]) for event in Pygame.event.get (): if Event.type = = Quit:running = Fa LSE Elif Event.type = = Pygame. Mousemotion: # Move the paddle if the Paddle.rect.centerx = event.pos[0] # mouse moves if Pygam                      E.sprite.spritecollide (paddle, Ballgroup, False): # Bounce the ball if it myball.speed[1] =-myball.speed[1]
        # hits the paddle myball.move () if not done:screen.blit (Myball.image, Myball.rect)
            Screen.blit (Paddle.image, Paddle.rect) screen.blit (score_surf,score_pos) for I in Range (lives):

    Width=screen.get_width () Screen.blit (myball.image,[width-40*i,20]) Pygame.display.flip () If Myball.rect.top>=screen.get_rect (). bottom:lives=lives-1 if lives = = 0:final_text1 = " Game over "final_text2 =" Your Final score is: "+ str (score) Ft1_font = Pygame.fonT.font (None) Ft1_surf = Ft1_font.render (Final_text1, 1, (0, 0, 0)) Ft2_font = Pygame.font.Font (None) Ft2_surf = Ft2_font.render (final_text2, 1, (0, 0, 0)) Screen.blit (Ft1_surf, [screen.get _width ()/2-ft1_surf.get_width ()/2 (M)) Screen.blit (Ft2_surf, [Screen.get_width ()
        /2-[Ft2_surf.get_width ()/2]) pygame.display.flip () done = True else: #wait 2 seconds, then start the next ball Pygame.time.delay (Watts) myBall.rect.topleft
 = [A] Pygame.quit ()