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| 1 | + """ | ||
| 2 | + Simple snake | ||
| 3 | + made a python game | ||
| 4 | + hope you like it | ||
| 5 | + | ||
| 6 | + """ | ||
| 7 | + | ||
| 8 | + import pygame | ||
| 9 | + | ||
| 10 | + # --- Globals --- | ||
| 11 | + # Colors | ||
| 12 | + BLACK = (0, 0, 0) | ||
| 13 | + WHITE = (255, 255, 255) | ||
| 14 | + | ||
| 15 | + # Set the width and height of each snake segment | ||
| 16 | + segment_width = 15 | ||
| 17 | + segment_height = 15 | ||
| 18 | + # Margin between each segment | ||
| 19 | + segment_margin = 3 | ||
| 20 | + | ||
| 21 | + # Set initial speed | ||
| 22 | + x_change = segment_width + segment_margin | ||
| 23 | + y_change = 0 | ||
| 24 | + | ||
| 25 | + | ||
| 26 | + class Segment(pygame.sprite.Sprite): | ||
| 27 | + """ Class to represent one segment of the snake. """ | ||
| 28 | + # -- Methods | ||
| 29 | + # Constructor function | ||
| 30 | + def __init__(self, x, y): | ||
| 31 | + # Call the parent's constructor | ||
| 32 | + super().__init__() | ||
| 33 | + | ||
| 34 | + # Set height, width | ||
| 35 | + self.image = pygame.Surface([segment_width, segment_height]) | ||
| 36 | + self.image.fill(WHITE) | ||
| 37 | + | ||
| 38 | + # Make our top-left corner the passed-in location. | ||
| 39 | + self.rect = self.image.get_rect() | ||
| 40 | + self.rect.x = x | ||
| 41 | + self.rect.y = y | ||
| 42 | + | ||
| 43 | + # Call this function so the Pygame library can initialize itself | ||
| 44 | + pygame.init() | ||
| 45 | + | ||
| 46 | + # Create an 800x600 sized screen | ||
| 47 | + screen = pygame.display.set_mode([800, 600]) | ||
| 48 | + | ||
| 49 | + # Set the title of the window | ||
| 50 | + pygame.display.set_caption('Snake Example') | ||
| 51 | + | ||
| 52 | + allspriteslist = pygame.sprite.Group() | ||
| 53 | + | ||
| 54 | + # Create an initial snake | ||
| 55 | + snake_segments = [] | ||
| 56 | + for i in range(15): | ||
| 57 | + x = 250 - (segment_width + segment_margin) * i | ||
| 58 | + y = 30 | ||
| 59 | + segment = Segment(x, y) | ||
| 60 | + snake_segments.append(segment) | ||
| 61 | + allspriteslist.add(segment) | ||
| 62 | + | ||
| 63 | + | ||
| 64 | + clock = pygame.time.Clock() | ||
| 65 | + done = False | ||
| 66 | + | ||
| 67 | + while not done: | ||
| 68 | + | ||
| 69 | + for event in pygame.event.get(): | ||
| 70 | + if event.type == pygame.QUIT: | ||
| 71 | + done = True | ||
| 72 | + | ||
| 73 | + # Set the speed based on the key pressed | ||
| 74 | + # We want the speed to be enough that we move a full | ||
| 75 | + # segment, plus the margin. | ||
| 76 | + if event.type == pygame.KEYDOWN: | ||
| 77 | + if event.key == pygame.K_LEFT: | ||
| 78 | + x_change = (segment_width + segment_margin) * -1 | ||
| 79 | + y_change = 0 | ||
| 80 | + if event.key == pygame.K_RIGHT: | ||
| 81 | + x_change = (segment_width + segment_margin) | ||
| 82 | + y_change = 0 | ||
| 83 | + if event.key == pygame.K_UP: | ||
| 84 | + x_change = 0 | ||
| 85 | + y_change = (segment_height + segment_margin) * -1 | ||
| 86 | + if event.key == pygame.K_DOWN: | ||
| 87 | + x_change = 0 | ||
| 88 | + y_change = (segment_height + segment_margin) | ||
| 89 | + | ||
| 90 | + # Get rid of last segment of the snake | ||
| 91 | + # .pop() command removes last item in list | ||
| 92 | + old_segment = snake_segments.pop() | ||
| 93 | + allspriteslist.remove(old_segment) | ||
| 94 | + | ||
| 95 | + # Figure out where new segment will be | ||
| 96 | + x = snake_segments[0].rect.x + x_change | ||
| 97 | + y = snake_segments[0].rect.y + y_change | ||
| 98 | + segment = Segment(x, y) | ||
| 99 | + | ||
| 100 | + # Insert new segment into the list | ||
| 101 | + snake_segments.insert(0, segment) | ||
| 102 | + allspriteslist.add(segment) | ||
| 103 | + | ||
| 104 | + # -- Draw everything | ||
| 105 | + # Clear screen | ||
| 106 | + screen.fill(BLACK) | ||
| 107 | + | ||
| 108 | + allspriteslist.draw(screen) | ||
| 109 | + | ||
| 110 | + # Flip screen | ||
| 111 | + pygame.display.flip() | ||
| 112 | + | ||
| 113 | + # Pause | ||
| 114 | + clock.tick(5) | ||
| 115 | + | ||
| 116 | + pygame.quit() | ||
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