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Jan 23rd, 2020
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  1. import pygame
  2. #from pygame.locals import *  # this only causes confusion
  3. # import sys  # you don't need this
  4.  
  5.  
  6. WIDTH = 600
  7. HEIGHT = 400
  8.  
  9. # classes and function definitions should come before the main program
  10.  
  11. class player(pygame.sprite.Sprite):
  12.     def __init__(self):
  13.         pygame.sprite.Sprite.__init__(self)
  14.         self.x = 300
  15.         self.y = 300
  16.         self.playersprite = pygame.image.load(r'player.png')
  17.         self.image = self.playersprite
  18.         self.rect = self.image.get_rect()
  19.         self.rect.center = (self.x, self.y)
  20.  
  21.     def move(self):
  22.         keys=pygame.key.get_pressed()
  23.         if keys[pygame.K_LEFT]:
  24.             self.x -= 2
  25.         if keys[pygame.K_RIGHT]:
  26.             self.x += 2
  27.         if keys[pygame.K_UP]:
  28.             self.y -=2
  29.         if keys[pygame.K_DOWN]:
  30.             self.y += 2
  31.         self.rect.center = (self.x, self.y)
  32.  
  33.  
  34. class Testsprite(pygame.sprite.Sprite):
  35.     def __init__(self, position):
  36.         pygame.sprite.Sprite.__init__(self)
  37.        
  38.         self.image = pygame.Surface((32, 32))
  39.         self.image.fill(pygame.Color('blue'))
  40.         self.rect = self.image.get_rect()
  41.         self.rect.center = position
  42.  
  43.  
  44. class Camera:
  45.     def __init__(self,width,height):
  46.         self.camera = pygame.Rect(0,0,width,height)
  47.         self.width = width
  48.         self.height = height
  49.  
  50.     def apply(self, entity):
  51.         return entity.rect.move(self.camera.topleft)
  52.    
  53.     def apply_rect(self, rect):
  54.         return rect.move(self.camera.topleft)
  55.  
  56.     def update(self, target):
  57.         x = -target.rect.x + int(WIDTH/2)
  58.         y = -target.rect.y + int(HEIGHT /2)
  59.         self.camera = pygame.Rect(x,y,self.width, self.height)
  60.        
  61.  
  62. def draw_env(player, cameraobj):
  63.     mainsurface.blit(background, camera.apply_rect(background_rect))
  64.     player.move()
  65.     for sprite in all_sprites:
  66.         mainsurface.blit(sprite.image, camera.apply(sprite))
  67.  
  68.  
  69.  
  70. pygame.init()
  71. clock = pygame.time.Clock()
  72. isJump = False
  73. jumpCount = 0
  74.  
  75. mainsurface = pygame.display.set_mode((WIDTH, HEIGHT))
  76. currentfloorlevel = 0
  77. run = True
  78.  
  79. background = pygame.image.load(r"testbg.jpg")
  80. bgwidth = 1280
  81. bgheight = 720
  82. background_rect = background.get_rect() # this is new
  83.  
  84. playerrender = player()
  85. camera= Camera(bgwidth, bgheight)
  86. all_sprites = pygame.sprite.Group()
  87.  
  88. all_sprites.add(playerrender)
  89.  
  90. all_sprites.add(Testsprite((100, 100)))
  91. all_sprites.add(Testsprite((140, 200)))
  92. all_sprites.add(Testsprite((1020, 600)))
  93. all_sprites.add(Testsprite((500, 400)))
  94.  
  95.  
  96. while run == True:
  97.     for event in pygame.event.get():
  98.         if event.type == pygame.QUIT:
  99.             run = False
  100.  
  101.     draw_env(playerrender, camera)
  102.     camera.update(playerrender)
  103.     pygame.display.update()
  104.     clock.tick(60)
  105.  
  106. pygame.quit()
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