annotate gamelib/helpscreen.py @ 470:fbbd39cfc975

Alter day counter logic a bit to cater for the case when it stops being the last day.
author Simon Cross <hodgestar@gmail.com>
date Tue, 24 Nov 2009 22:21:06 +0000
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children c34d53edfa12
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1 """Help screen."""
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2
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3 from pgu import gui
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4 import pygame
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5 import constants
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6 import engine
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7 import imagecache
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8
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9 HELP = [
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10 """Welcome to %s
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11
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12 Introduction:
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13
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14 The aim of the game is to make as much money as possible from your chicken
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15 farm. The problem is the foxes, which want to eat your chickens. Since hiring
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16 guards is both too expensive and unreliable, the obvious solution is to help
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17 the chickens defend themselves.
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18
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19 Game mechanics:
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20
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21 You lose if you end a night with no chickens left.
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22
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23 Chickens only lay eggs in henhouses, and must stay on the egg for 2 days to
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24 hatch a new chicken. Chickens that hatch in already full henhouses are
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25 moved to just outside. If there is no space outside, they die immediately
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26 from overcrowding.
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27 """ % constants.NAME,
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28
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29 """Second Page of Help Text.
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30 """
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31 ]
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32
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33 LEVEL_TEXT="""The currently selected level is %(name)s
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34
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35 The goal is:
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36 %(goal)s
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37 """
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38
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39 def make_help_screen(level):
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40 """Create a main menu"""
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41 help_screen = HelpScreen(level, width=600)
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42
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43 c = HelpContainer(align=0, valign=0)
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44 c.add(help_screen, 0, 0)
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45
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46 return c
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47
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48 class HelpContainer(gui.Container):
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49 def paint(self, s):
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50 pygame.display.set_caption('Instructions')
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51 splash = imagecache.load_image("images/splash.png", ["lighten_most"])
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52 pygame.display.get_surface().blit(splash, (0, 0))
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53 gui.Container.paint(self, s)
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54
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55 class HelpScreen(gui.Document):
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56 def __init__(self, level, **params):
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57 gui.Document.__init__(self, **params)
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58
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59 self.cur_page = 0
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60
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61 self.level = level
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62
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63 def done_pressed():
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64 pygame.event.post(engine.GO_MAIN_MENU)
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65
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66 def next_page():
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67 self.cur_page += 1
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68 if self.cur_page >= len(HELP):
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69 self.cur_page = 0
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70 self.redraw()
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71
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72 def prev_page():
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73 self.cur_page -= 1
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74 if self.cur_page < 0:
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75 self.cur_page = len(HELP) - 1
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76 self.redraw()
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77
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78 self.done_button = gui.Button("Return to Main Menu")
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79 self.done_button.connect(gui.CLICK, done_pressed)
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80
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81 self.prev_button = gui.Button("Prev Page")
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82 self.prev_button.connect(gui.CLICK, prev_page)
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83
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84 self.next_button = gui.Button("Next Page")
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85 self.next_button.connect(gui.CLICK, next_page)
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86
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87 self.redraw()
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88
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89 def redraw(self):
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90 for widget in self.widgets[:]:
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91 self.remove(widget)
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92 self.layout._widgets = []
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93 self.layout.init()
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94
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95 space = self.style.font.size(" ")
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96
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97 full_text = HELP[self.cur_page] + '\n\n' + LEVEL_TEXT % {
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98 'name' : self.level.level_name,
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99 'goal' : self.level.goal
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100 }
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101
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102 for paragraph in full_text.split('\n\n'):
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103 self.block(align=-1)
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104 for word in paragraph.split():
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105 self.add(gui.Label(word))
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106 self.space(space)
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107 self.br(space[1])
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108 self.br(space[1])
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109 self.add(self.prev_button, align=-1)
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110 self.add(self.next_button, align=1)
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111 self.add(self.done_button, align=0)