utility.py

   1 # utility functions for the game
   2 import pygame
   3 import sys
   4 import os.path
   5
   6 # function to draw text on surface
   7 def put_text (surface,  x, y, size, (r,g,b), text):
   8         harisfont = os.path.join ("font", "harisgamefont.ttf")
   9         textsurf = pygame.font.Font (harisfont, size).render (text, True, pygame.Color (r,g,b))
  10         surface.blit (textsurf, (x, y))
  11
  12 # function to draw several lines of text, centered horizontally and vertically on surface
  13 def put_lines (surface, text_lines):
  14         textsurfs = []
  15         height = 0
  16         harisfont = os.path.join ("font", "harisgamefont.ttf")
  17
  18         for size, r, g, b, text in text_lines:
  19                 s = pygame.font.Font (harisfont, size).render (text, True, pygame.Color (r,g,b))
  20                 # add spacing
  21                 height = height + s.get_height()*1.5
  22                 textsurfs.append (s)
  23
  24         scrwidth = surface.get_width ()
  25         scrheight = surface.get_height ()
  26         i = 0
  27         for s in textsurfs:
  28                 surface.blit (s, (scrwidth/2 - s.get_width()/2, scrheight/2 - height/2+ i* (s.get_height()*1.5)))
  29                 i += 1
  30
  31 # function to ask a question and return answer
  32 def ask_question (surface, question, answers, bgscreen):
  33
  34         sel_answer = 1
  35
  36         while 1:
  37                 textarray = [ [ 10, 128, 0, 0, question ] ]
  38
  39                 i = 1
  40                 for answer in answers:
  41                         if sel_answer == i:
  42                                 r, g, b = 0, 0, 216
  43                         else:
  44                                 r, g, b = 0, 0, 0
  45                         textarray.append ( [10, r, g, b, answer] )
  46
  47                         i += 1
  48
  49                 surface.blit (bgscreen, (surface.get_width()/2 - bgscreen.get_width()/2,
  50                                                                         surface.get_height()/2 - bgscreen.get_height()/2))
  51                 put_lines (surface, textarray)
  52
  53                 pygame.display.update ()
  54
  55                 for event in pygame.event.get ():
  56                         if event.type == pygame.QUIT:
  57                                 sys.exit (0)
  58                         elif event.type == pygame.KEYDOWN:
  59                                 if event.key == pygame.K_UP:
  60                                         sel_answer -= 1
  61                                         if sel_answer < 1:
  62                                                 sel_answer = 1
  63                                 elif event.key == pygame.K_DOWN:
  64                                         sel_answer += 1
  65                                         if sel_answer > len(answers):
  66                                                 sel_answer = len(answers)
  67                                 elif event.key == pygame.K_RETURN:
  68                                         return sel_answer
  69