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+<code python>
+"""
+Nibbles the video game.
+Written by Grant Jenks
+http://www.grantjenks.com/
+DISCLAIMER
+THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE
+LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR
+OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND,
+EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE
+ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU.
+SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY
+SERVICING, REPAIR OR CORRECTION.
+Copyright
+This work is licensed under the
+Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License.
+To view a copy of this license, visit
+http://creativecommons.org/licenses/by-nc-nd/3.0/
+or send a letter to Creative Commons, 171 Second Street, Suite 300,
+San Francisco, California, 94105, USA
+"""
+import sys, pygame
+from random import randrange
+from pygame.locals import *
+from collections import deque
+from itertools import count
+pygame.init()
+size = width, height = 480, 480
+font = pygame.font.Font(None, 14)
+up, right, down, left = (0, -10), (10, 0), (0, 10), (-10, 0)
+clock = pygame.time.Clock()
+screen = pygame.display.set_mode(size)
+snake_len, snake_dir, food, dead = 20, down, None, False
+snake = deque(pygame.Rect(10, 10 + cnt * 10, 10, 10)
+              for cnt in range(snake_len))
+foreground, background = (255, 255, 255), (0, 0, 0)
+for counter in count():
+    event = pygame.event.poll()
+    if event.type == pygame.QUIT:
+        pygame.quit()
+        sys.exit()
+    elif event.type == KEYDOWN:
+        if event.key == K_UP and snake_dir != down:
+            snake_dir = up
+        elif event.key == K_RIGHT and snake_dir != left:
+            snake_dir = right
+        elif event.key == K_DOWN and snake_dir != up:
+            snake_dir = down
+        elif event.key == K_LEFT and snake_dir != right:
+            snake_dir = left
+        elif event.key == K_r:
+            snake_len, snake_dir, food, dead = 20, down, None, False
+            snake = deque(pygame.Rect(10, 10 + cnt * 10, 10, 10)
+                          for cnt in range(snake_len))
+            foreground, background = (255, 255, 255), (0, 0, 0)
+        elif event.key == K_q:
+            pygame.event.post(pygame.event.Event(QUIT))
+    if dead:
+        continue
+    next = snake[-1].move(snake_dir)
+    if next.left < 0: next.left = width - 10
+    if next.left >= width: next.left = 0
+    if next.top < 0: next.top = height - 10
+    if next.top >= height: next.top = 0
+    if next in snake:
+        dead = True
+        foreground, background = background, foreground
+    else:
+        snake.append(next)
+        if food and next == food:
+            food = None
+            snake_len += 1
+        else:
+            snake.popleft()
+    if food is None and counter % 50 == 0:
+        food = pygame.Rect(randrange(48) * 10, randrange(48) * 10, 10, 10)
+    screen.fill(background)
+    for rect in snake:
+        pygame.draw.rect(screen, foreground, rect)
+    if food:
+        pygame.draw.rect(screen, foreground, food)
+    surface = font.render(str(snake_len), True, foreground)
+    screen.blit(surface, (0, 0))
+    pygame.display.flip()
+    clock.tick(min(5 + (snake_len / 4), 30))
+</code>

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random/nibbles_the_video_game.txt · Last modified: 2012/02/19 20:37 by grant