54 lines
1.3 KiB
Python
54 lines
1.3 KiB
Python
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#!/usr/bin/env python3
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# Move a single pixel around the screen without crashing against the borders.
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# (and exit the program once crashed)
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import sys
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from colors import *
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from screen import *
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def main():
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# Position of the pixel.
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x = WIDTH / 2
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y = HEIGHT / 2
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# Direction of the pixel.
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dir_x = 0
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dir_y = -1
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clock = pygame.time.Clock()
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running = True
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while running:
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x += dir_x
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y += dir_y
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if x <= 0 or x >= WIDTH or y <= 0 or y >= HEIGHT:
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print("Crash!")
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running = False
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screen.fill(BLACK)
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screen.set_at((int(x), int(y)), WHITE)
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for event in pygame.event.get():
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if event.type == pygame.QUIT:
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running = False
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elif event.type == pygame.KEYDOWN:
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if event.key == pygame.K_UP:
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dir_x = 0
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dir_y = -1
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elif event.key == pygame.K_DOWN:
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dir_x = 0
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dir_y = 1
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elif event.key == pygame.K_LEFT:
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dir_x = -1
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dir_y = 0
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elif event.key == pygame.K_RIGHT:
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dir_x = 1
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dir_y = 0
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pygame.display.flip()
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clock.tick(120)
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if __name__ == "__main__": main()
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