pygame study notes (6) : complete a simple game

After learning Pygame for such a long time, 1 wanted to write a real game 1. What seems like an easy game to write is how hard it is. Originally want to write a tetris, think for a long time how to achieve, want to think, also did not write out, so simply download someone else's code to read. Later, I wanted to write a game to help me memorize the treasure box, but I didn't finish it. Only 1 has been completed, which is the following game of gold coin catching by the little man. It is super simple, controlling the little man's movement to catch the gold coin from the air through the left and right keys. If you catch the gold coin, you will get 5 points. After finishing this code, I still feel that this code is poorly written. Indeed, I have only scratched the surface of pygame, but I still don't have a thorough understanding of surface and sprite. Here to write out the code, have time to help the cattle can point 1, let me also improve.

# -*- coding: cp936 -*-
'''
1 Super simple game 
 Around the key control SIMS move to catch the air down the gold, gold to catch 5 Points, can not catch the end of the game, gold coin speed will follow level The number of customs 
 And faster and faster 
'''
import pygame,sys,os,random
pygame.init()

class rect():# Draw a dog 
  def __init__(self,filename,initial_position):
    self.image=pygame.image.load(filename)
    self.rect=self.image.get_rect()
    self.rect.topleft=initial_position
    
class goldrect(pygame.sprite.Sprite):# Draw gold COINS 
  def __init__(self,gold_position,speed):
    pygame.sprite.Sprite.__init__(self)
    self.image=pygame.image.load('image\\gold.png')
    self.rect=self.image.get_rect()
    self.rect.topleft=gold_position
    self.speed=speed
  def move(self):
    self.rect=self.rect.move(self.speed)

    
    


def drawback(): # Draw the background picture 
  my_back=pygame.image.load('image\\qi3.jpg') 
  bakscreen.blit(my_back,[0,0])

    
def loadtext(levelnum,score,highscore):# Draw grades, level , highest grade 
  my_font=pygame.font.SysFont(None,24)
  levelstr='Level:'+str(levelnum)
  text_screen=my_font.render(levelstr, True, (255, 0, 0))
  bakscreen.blit(text_screen, (650,50))
  highscorestr='Higescore:'+str(highscore)
  text_screen=my_font.render(highscorestr, True, (255, 0, 0))
  bakscreen.blit(text_screen, (650,80))
  scorestr='Score:'+str(score)
  text_screen=my_font.render(scorestr, True, (255, 0, 0))
  bakscreen.blit(text_screen, (650,110))  

def loadgameover(scorenum,highscore):# draw GAME OVER
  my_font=pygame.font.SysFont(None,50)
  levelstr='GAME OVER'
  over_screen=my_font.render(levelstr, True, (255, 0, 0))
  bakscreen.blit(over_screen, (300,240))
  highscorestr='YOUR SCORE IS '+str(scorenum)
  over_screen=my_font.render(highscorestr, True, (255, 0, 0))
  bakscreen.blit(over_screen, (280,290))
  if scorenum>int(highscore):# Write maximum score 
    highscorestr='YOUR HAVE GOT THE HIGHEST SCORE!'
    text_screen=my_font.render(highscorestr, True, (255, 0, 0))
    bakscreen.blit(text_screen, (100,340))
    highfile=open('highscore','w')
    highfile.writelines(str(scorenum)) 
    highfile.close() 
  
def gethighscore(): # Read maximum score 
  if os.path.isfile('highscore'):
    highfile=open('highscore','r')
    highscore=highfile.readline() 
    highfile.close() 
  else:
    highscore=0
  return highscore
         
bakscreen=pygame.display.set_mode([800,600])
bakscreen.fill([0,160,233])
pygame.display.set_caption('Dig!Dig!')
drawback()



levelnum=1 #level
scorenum=0 # score 
highscore=gethighscore()# The highest 
ileft=1 # Record the number of left moves to control the image 
iright=10 # Record the number of steps to the right to control the image 
x=100
y=450
filename='image\\1.png'
backimg_ren=rect(filename,[x,y])
bakscreen.blit(backimg_ren.image,backimg_ren.rect)
loadtext(levelnum,scorenum,highscore)
goldx=random.randint(50,580)
speed=[0,levelnum]
mygold=goldrect([goldx,100],speed) 
pygame.display.update()

while True:
  if scorenum>0 and scorenum/50.0==int(scorenum/50.0):# When the score was 50 Is modified when multiple of level
    levelnum=scorenum/50+1
    speed=[0,levelnum]
  
  for event in pygame.event.get():
    if event.type==pygame.QUIT:
      sys.exit()
  #make gold  

  pressed_keys = pygame.key.get_pressed()
  if pressed_keys[pygame.K_LEFT]:# Press the left key 

    drawback() 
    loadtext(levelnum,scorenum,highscore)

    if iright > 14 :iright=10
    iright=iright+1
    filename='image\\'+str(iright)+'.png'
    if x<50 :
      x=50
    else:
      x=x-10

    backimg_surface=rect(filename,[x,y])
    bakscreen.blit(backimg_surface.image,backimg_surface.rect)

    
  if pressed_keys[pygame.K_RIGHT]:# Press the right 

    drawback()
    loadtext(levelnum,scorenum,highscore)

    if ileft > 4 :ileft=0
    ileft=ileft+1
    filename='image\\'+str(ileft)+'.png'
    if x>560:
      x=560
    else:
      x=x+10

    backimg_surface=rect(filename,[x,y])
    bakscreen.blit(backimg_surface.image,backimg_surface.rect)

  drawback()
  loadtext(levelnum,scorenum,highscore)
  mygold.move()
  bakscreen.blit(mygold.image,mygold.rect) 
  
  backimg_surface=rect(filename,[x,y])
  bakscreen.blit(backimg_surface.image,backimg_surface.rect)
  if mygold.rect.top>600:# To see if the gold coin touched the ground, 1 But land, game over 
    loadgameover(scorenum,highscore)
  if mygold.rect.colliderect(backimg_surface.rect):# Judge whether the gold coin collides with the little man. If the collision means that the little man catches the gold coin 
    scorenum+=5
    loadtext(levelnum,scorenum,highscore)
    goldx=random.randint(50,580)
    mygold=goldrect([goldx,100],speed) 
  pygame.display.update()

Program used in resources can be downloaded from here: file name: gold. 7 z, access address: http: / / www kuaipan. cn/file/id_16699292408348719 htm