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python game with curses

P: n/a
Hi,

I have wrote a game with python curses. The problem is that I want to
confirm before quitting, while my implementation doesn't seem to work.
Anyone can help me?
Expand|Select|Wrap|Line Numbers
  1. #!/usr/bin/python
  2. #
  3. # Brick & Ball in Python
  4. # by Jerry Fleming <je**********@etang.com>
  5. #
  6. # This is a small game adapted from that in Motorola Mobile C289, and my
  7. first game in python :)
  8. #
  9. # This progrma is best run under linux. Since Windows port of Python has
  10. poor curses support,
  11. # play it under Windows is not recommended. If you have no linux box
  12. available, try Cygwin,
  13. # though it too has poor curses support.
  14. #
  15. # As I am a newbie to python, please tell me if you have a better
  16. implementation or any suggestions.
  17. #
  18. # TODO:
  19. # re-implemente it with wxPython, so one does not have to rely on the
  20. ugly curses.
  21. # session support.
  22. # pausing, especially when confirming
  23. # resize terminal at run time
  24. #
  25. # HISTORY
  26. # 2006-04-19: first version
  27. #
  28. #
  29.  
  30. import curses
  31. import _curses
  32. import thread
  33. from time import sleep
  34. from string import split
  35. from random import randint
  36.  
  37. # parameters: adjust them to fit you terminal
  38. brick_width = 7
  39. brick_gap_x = 1
  40. brick_gap_y = 1
  41. speed = 0.05 # sleep time to control moving speed of the ball
  42. pause = 1 # time to pause
  43.  
  44. # terminal initialization
  45. stdscr = curses.initscr()
  46. curses.noecho()
  47. curses.cbreak()
  48. curses.curs_set(0)
  49. stdscr.keypad(1)
  50. screen_height, screen_width = stdscr.getmaxyx()
  51. screen_height = screen_height - 1
  52. screen_width = screen_width - 1
  53. brick_rows = screen_height / 4
  54. if brick_rows > 7: brick_rows = 7
  55. brick_cols = (screen_width + brick_gap_x) / (brick_width + brick_gap_x)
  56. brick_margin = (screen_width - brick_cols * (brick_width + brick_gap_x)
  57. + brick_gap_x)/2
  58. pad_position = randint(0, screen_width - brick_width)
  59. ball_position = [screen_height - 3, randint(0, screen_width - brick_width)]
  60. ball_direction = [-1, 1] # abs(tan(a)) must be 1
  61. char = ''
  62. bricks = []
  63. game_score = 0
  64. ScreenSizeError = 'ScreenSizeError'
  65.  
  66. tStart = '''
  67. ______        _       _         ___      ______        _ _     _
  68. ______             _
  69. (____  \      (_)     | |       / _ \    (____  \      | | |   (_)
  70. (_____ \        _  | |
  71. ____)  ) ____ _  ____| |  _   ( (_) )    ____)  )_____| | |    _ ____
  72. _____) )   _ _| |_| |__   ___  ____
  73. |  __  ( / ___) |/ ___) |_/ )   ) _ (    |  __  ((____ | | |   | |  _ \
  74. |  ____/ | | (_   _)  _ \ / _ \|  _ \
  75. | |__)  ) |   | ( (___|  _ (   ( (/  \   | |__)  ) ___ | | |   | | | | |
  76. | |    | |_| | | |_| | | | |_| | | | |
  77. |______/|_|   |_|\____)_| \_)   \__/\_)  |______/\_____|\_)_)  |_|_| |_|
  78. |_|     \__  |  \__)_| |_|\___/|_| |_|
  79.  
  80. (____/
  81.  
  82.  
  83. by Jerry Fleming <je**********@etang.com>
  84.  
  85.  
  86. GAME STARTING ...
  87.  
  88. (this assumes that your terminal be larger that
  89. 130x40)
  90. '''
  91.  
  92. tExit = '''
  93. 88888
  94. 88888
  95. 88888888888             88       ad88888ba     88 8b        d8      d8
  96. 88
  97. 88                      ""   ,d d8"     "8b    88  Y8,    ,8P     ,8P'
  98. 88
  99. 88                           88 ""      a8P    88   Y8,  ,8P     d8"
  100. 88
  101. 88aaaaa     8b,     ,d8 88 MM88MMM   ,a8P"     88    "8aa8"    ,8P'
  102. 8b,dPPYba,  88
  103. 88"""""      `Y8, ,8P'  88   88     d8"        88     `88'    d8"   88P'
  104. `"8a 88
  105. 88             )888(    88   88     ""         88      88   ,8P'    88
  106. 88 88
  107. 88           ,d8" "8b,  88   88,    aa         88      88  d8"      88
  108. 88 88
  109. 88888888888 8P'     `Y8 88   "Y888  88         88      88 8P'       88
  110. 88 88
  111. 88888
  112. 88888
  113. '''
  114.  
  115. tOver = '''
  116. ,ad8888ba,
  117. 88
  118. d8"'    `"8b
  119. 88
  120. d8'
  121. 88
  122. 88            ,adPPYYba, 88,dPYba,,adPYba,   ,adPPYba,     ,adPPYba,  8b
  123. d8  ,adPPYba, 8b,dPPYba, 88
  124. 88      88888 ""     `Y8 88P'   "88"    "8a a8P_____88    a8"     "8a
  125. `8b     d8' a8P_____88 88P'   "Y8 88
  126. Y8,        88 ,adPPPPP88 88      88      88 8PP"""""""    8b       d8
  127. `8b   d8'  8PP""""""" 88         ""
  128. Y8a.    .a88 88,    ,88 88      88      88 "8b,   ,aa    "8a,   ,a8"
  129. `8b,d8'   "8b,   ,aa 88         aa
  130. `"Y88888P"  `"8bbdP"Y8 88      88      88  `"Ybbd8"'     `"YbbdP"'
  131. "8"      `"Ybbd8"' 88         88
  132. '''
  133.  
  134. tGoon = '''
  135. 88888
  136. 88888
  137. ,ad8888ba,                                      ad88888ba     88 8b
  138. d8      d8          88
  139. d8"'    `"8b                                    d8"     "8b    88  Y8,
  140. ,8P     ,8P'          88
  141. d8'                                              ""      a8P    88   Y8,
  142. ,8P     d8"            88
  143. 88             ,adPPYba,      ,adPPYba,  8b,dPPYba,   ,a8P"     88
  144. "8aa8"    ,8P' 8b,dPPYba,  88
  145. 88      88888 a8"     "8a    a8"     "8a 88P'   `"8a d8"        88
  146. `88'    d8"   88P'   `"8a 88
  147. Y8,        88 8b       d8    8b       d8 88       88 ""         88
  148. 88   ,8P'    88       88 88
  149. Y8a.    .a88 "8a,   ,a8"    "8a,   ,a8" 88       88 aa         88
  150. 88  d8"      88       88 88
  151. `"Y88888P"   `"YbbdP"'      `"YbbdP"'  88       88 88         88
  152. 88 8P'       88       88 88
  153. 88888
  154. 88888
  155. '''
  156.  
  157. def init_game():
  158. '''Game initializing.'''
  159. global bricks
  160. # display the bricks
  161. for row in range(brick_rows):
  162. y = row * (1 + brick_gap_y)
  163. for col in range(brick_cols):
  164. x = col * (brick_gap_x + brick_width) + brick_margin
  165. stdscr.addstr(y, x, ' ' * brick_width, curses.A_REVERSE)
  166. bricks.append([y, x])
  167. # move the pad to center of bottom at starting up
  168. stdscr.addstr(screen_height - 1, pad_position, ' ' * brick_width,
  169. curses.A_REVERSE)
  170. # move the ball to left bottom side at starting up
  171. stdscr.addstr(ball_position[0], ball_position[1], ' ', curses.A_REVERSE)
  172. # display score board
  173. stdscr.addstr(screen_height, 0, ' SCORE: '+ ('%03d' % game_score) + '
  174. '* 4, curses.A_REVERSE)
  175. stdscr.addstr(screen_height, 15, 'USE q to quit' + ' '* (screen_width -
  176. 28), curses.A_REVERSE)
  177. # final step to init display
  178. stdscr.refresh()
  179.  
  180. def move_pad(lock):
  181. '''Move the pad to catch the ball.'''
  182. global char, pad_position
  183. char = stdscr.getch()
  184. if char == ord('q'): quit_game(lock)
  185. if char == curses.KEY_LEFT: pad_position = pad_position - 1
  186. if char == curses.KEY_RIGHT: pad_position = pad_position + 1
  187. if pad_position < 0: pad_position = 0
  188. if pad_position >= screen_width - brick_width: pad_position =
  189. screen_width - brick_width
  190. stdscr.addstr(screen_height - 1, 0, ' ' * screen_width)
  191. stdscr.addstr(screen_height - 1, pad_position, ' ' * brick_width,
  192. curses.A_REVERSE)
  193. stdscr.refresh()
  194.  
  195. def move_ball(lock):
  196. '''Move the ball to a direction.'''
  197. global ball_position, ball_direction
  198. # clear the old position, do not if in pad
  199. if ball_position[0] != screen_height - 1:
  200. stdscr.addstr(ball_position[0], ball_position[1], ' ')
  201. ball_position[0] = ball_position[0] + ball_direction[0]
  202. ball_position[1] = ball_position[1] + ball_direction[1]
  203. stdscr.addstr(ball_position[0], ball_position[1], ' ', curses.A_REVERSE)
  204. detect_collision(lock)
  205. stdscr.refresh()
  206. sleep(speed)
  207.  
  208. def detect_collision(lock):
  209. '''Detect whether the ball has hit something, change direction if yes.'''
  210. global bricks, ball_direction, game_score
  211. # hit upper wall
  212. if ball_position[0] == 0 :
  213. ball_direction = [- ball_direction[0], ball_direction[1]]
  214. # hit left and right wall
  215. if ball_position[1] == 0 or ball_position[1] == screen_width:
  216. ball_direction = [ball_direction[0], - ball_direction[1]]
  217. # hit brick
  218. for brick in bricks:
  219. # hit from bottom or upper direction
  220. if brick[1] <= ball_position[1] + ball_direction[1] <= brick[1] +
  221. brick_width \
  222. and ball_position[0] + ball_direction[0] == brick[0]:
  223. ball_direction[0] = - ball_direction[0]
  224. stdscr.addstr(brick[0], brick[1], ' '* brick_width)
  225. game_score = game_score + 10
  226. stdscr.addstr(screen_height, 8, '%03d' % game_score, curses.A_REVERSE)
  227. bricks.remove(brick)
  228. # another level to continue the game
  229. if not len(bricks): another_level()
  230. # hit body of pad
  231. if ball_position[0] == screen_height - 2 and pad_position <=
  232. ball_position[1] <= pad_position + brick_width:
  233. ball_direction[0] = - ball_direction[0]
  234. # hit bottom
  235. elif ball_position[0] == screen_height - 1:
  236. ball_direction[0] = - ball_direction[0]
  237. # hit left side of pad (hit bottom already)
  238. if ball_position[1] == pad_position and  char == curses.KEY_LEFT and
  239. ball_direction[1]:
  240. ball_direction[1] = - ball_direction[1]
  241. # hit right side of pad (hit bottom already)
  242. if ball_position[1] == pad_position + brick_width and  char ==
  243. curses.KEY_RIGHT and not ball_direction[1]:
  244. ball_direction[1] = - ball_direction[1]
  245. # hit bottom wall, game over
  246. if ball_position[0] == screen_height - 1 and not pad_position <=
  247. ball_position[1] <= pad_position + brick_width:
  248. line_num = 0
  249. for line in split(tOver, "\n"):
  250. stdscr.addstr(screen_height / 2 + line_num, 10, line)
  251. line_num = line_num + 1
  252. stdscr.refresh()
  253. curses.flash()
  254. sleep(1)
  255. curses.flash()
  256. sleep(1)
  257. lock.release()
  258.  
  259. def quit_game(lock):
  260. '''Confirm quit the game.'''
  261. global char, speed
  262. if char != ord('q'): return
  263. speed_old = speed # store the value for resume
  264. speed = pause # wait for a long time
  265. line_num = 0
  266. for line in split(tExit, "\n"):
  267. stdscr.addstr(screen_height / 2 + line_num, 10, line)
  268. line_num = line_num + 1
  269. stdscr.addstr(screen_height, 15, 'USE n to continue, any other key to
  270. quit' + ' '* (screen_width - 40), curses.A_REVERSE)
  271. stdscr.refresh()
  272. #char = stdscr.getch() ## fix me: why can't we use the global char?
  273. if char == ord('n'):
  274. speed = speed_old
  275. line_num = 0
  276. for line in split(tExit, "\n"):
  277. stdscr.addstr(screen_height / 2 + line_num, 10, ' ' * len(line) )
  278. line_num = line_num + 1
  279. stdscr.refresh()
  280. else:
  281. lock.release()
  282.  
  283. def another_level():
  284. '''Confirm another level of the game.'''
  285. global speed, char
  286. speed_old = speed # store the value for resume
  287. speed = pause # wait for a long time
  288. line_num = 0
  289. for line in split(tGoon, "\n"):
  290. stdscr.addstr(screen_height / 2 + line_num, 10, line)
  291. line_num = line_num + 1
  292. stdscr.addstr(screen_height, 15, 'USE n to quit, any other key to
  293. continue' + ' '* (screen_width - 40), curses.A_REVERSE)
  294. stdscr.refresh()
  295. #char = stdscr.getch()
  296. if char == ord('n'):
  297. lock.release()
  298. else:
  299. stdscr.erase()
  300. speed = speed / 2
  301. init_game()
  302.  
  303. def looper(fun, lock):
  304. '''Dispatcher to drive th ball and pad.'''
  305. try:
  306. while lock.locked(): globals()[fun](lock)
  307. except _curses.error, diag:
  308. if lock.locked(): lock.release()
  309.  
  310. # main loop starts here
  311. if __name__ == "__main__":
  312. try:
  313. line_num = 0
  314. for line in split(tStart, "\n"):
  315. stdscr.addstr(screen_height /4 + line_num, 10, line)
  316. line_num = line_num + 1
  317. stdscr.refresh()
  318. sleep(1)
  319. stdscr.erase()
  320. init_game()
  321. locks = []
  322. for i in range(2):
  323. lock = thread.allocate_lock()
  324. lock.acquire()
  325. locks.append(lock)
  326. thread.start_new_thread(looper, ('move_ball', locks[0]))
  327. thread.start_new_thread(looper, ('move_pad', locks[1]))
  328. while locks[0].locked() and locks[1].locked: pass # main loop
  329. except _curses.error, diag:
  330. msg = 'Your terminal is too small: ' + str(diag)
  331. except 'dd':
  332. msg = 'Game exit abnormally.'
  333. else:
  334. msg = 'Game stopped.'
  335. # out of loop means stop
  336. for i in range(2):
  337. if locks[i].locked(): locks[i].release()
  338. height, width = stdscr.getmaxyx()
  339. if height - 1 < screen_height or width - 1 < screen_width:
  340. msg = 'Your terminal is shrinked.'
  341. # out of loop means stop
  342. curses.curs_set(1)
  343. stdscr.keypad(0)
  344. curses.nocbreak()
  345. curses.echo()
  346. curses.endwin()
  347. print msg
  348.  
  349.  
Apr 28 '06 #1
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P: n/a
Jerry,

if you want anyone to answer your question, please read this:
http://www.catb.org/~esr/faqs/smart-questions.html

Apr 28 '06 #2

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