annotate gamelib/engine.py @ 336:82a18615a0ab

Ask 'Are you sure?'
author Neil Muller <drnlmuller@gmail.com>
date Sat, 05 Sep 2009 22:30:17 +0000
parents 9bf0e701a36e
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1 """Game engine and states."""
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2 from pgu.engine import Game, State, Quit
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3 import pygame
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4 from pygame.locals import USEREVENT, QUIT, KEYDOWN, K_ESCAPE, K_n, K_d, K_s, K_i
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6 import gameboard
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7 import gameover
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8 import sound
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9 import constants
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10 import mainmenu
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11 import helpscreen
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12 from misc import check_exit
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13
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14 class Engine(Game):
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15 def __init__(self, main_app):
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16 self.main_app = main_app
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17 self.clock = pygame.time.Clock()
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18 self.main_menu = mainmenu.make_main_menu()
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19 self._open_window = None
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20 self.scoreboard = gameover.ScoreTable()
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21 self.gameboard = None
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23 def tick(self):
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24 """Tic toc."""
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25 pygame.time.wait(10)
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27 def open_window(self, window):
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28 """Open a widget as the main window."""
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29 if self._open_window is not None:
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30 self.main_app.close(self._open_window)
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31 self.main_app.open(window)
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32 self._open_window = window
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33
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34 def create_game_board(self):
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35 """Create and open a gameboard window."""
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36 self.gameboard = gameboard.GameBoard(self.main_app)
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37 self.open_window(self.gameboard.get_top_widget())
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39 def set_main_menu(self):
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40 """Open the main menu"""
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41 self.open_window(self.main_menu)
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42
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43 def set_help_screen(self):
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44 """Open the main menu"""
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45 help_screen = helpscreen.make_help_screen()
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46 self.open_window(help_screen)
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48 def create_game_over(self):
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49 """Create and open the Game Over window"""
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50 for mode, days in constants.TURN_LIMITS.iteritems():
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51 if days == constants.TURN_LIMIT:
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52 game_over = gameover.create_game_over(self.gameboard,
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53 self.scoreboard[mode], mode)
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54 self.gameboard = None
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55 self.open_window(game_over)
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56
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57 def event(self, e):
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58 if not Game.event(self, e):
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59 if self.gameboard:
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60 return self.gameboard.event(e)
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61 return False
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62 return True
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64
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65 class MainMenuState(State):
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66 def init(self):
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67 sound.stop_background_music()
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68 self.game.set_main_menu()
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69
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70 def event(self, e):
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71 if events_equal(e, START_DAY):
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72 self.game.create_game_board()
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73 return DayState(self.game)
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74 elif events_equal(e, GO_HELP_SCREEN):
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75 return HelpScreenState(self.game)
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76 elif e.type is KEYDOWN:
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77 if e.key == K_ESCAPE:
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78 return Quit(self.game)
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79 elif e.key == K_s:
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80 self.game.create_game_board()
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81 return DayState(self.game)
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82 elif e.key == K_i:
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83 return HelpScreenState(self.game)
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84 elif e.type is not QUIT:
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85 self.game.main_app.event(e)
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87 def paint(self, screen):
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88 screen.fill((0,0,0))
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89 self.game.main_app.paint(screen)
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90 pygame.display.flip()
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92 def update(self, screen):
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93 update = self.game.main_app.update(screen)
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94 pygame.display.update(update)
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96 class HelpScreenState(State):
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97 def init(self):
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98 sound.stop_background_music()
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99 self.game.set_help_screen()
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100
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101 def event(self, e):
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102 if e.type is KEYDOWN and e.key == K_ESCAPE:
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103 return MainMenuState(self.game)
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104 elif events_equal(e, GO_MAIN_MENU):
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105 return MainMenuState(self.game)
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106 elif e.type is not QUIT:
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107 self.game.main_app.event(e)
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108
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109 def paint(self, screen):
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110 screen.fill((0,0,0))
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111 self.game.main_app.paint(screen)
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112 pygame.display.flip()
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113
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114 def update(self, screen):
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115 update = self.game.main_app.update(screen)
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116 pygame.display.update(update)
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117
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118 class DayState(State):
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119 def init(self):
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120 """Add some chickens to the farm"""
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121 sound.stop_background_music()
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122 self.game.gameboard.start_day()
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123
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124 sound.play_sound("daybreak.ogg")
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125 # disable timer
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126 pygame.time.set_timer(MOVE_FOX_ID, 0)
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127 pygame.time.set_timer(ANIM_ID, SLOW_ANIM_SPEED)
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128 self.game.gameboard.advance_day()
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129 self.game.gameboard.clear_foxes()
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130 sound.background_music("daytime.ogg")
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131 self.game.gameboard.hatch_eggs()
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132 self.dialog = None
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133
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134 def event(self, e):
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135 if self.dialog and self.dialog.running:
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136 if self.dialog.event(e):
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137 return
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138 elif self.dialog:
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139 if self.dialog.do_quit:
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140 self.dialog = None
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diff changeset
141 self.game.gameboard.reset_states()
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parents: 320
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142 return GameOver(self.game)
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parents: 320
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143 self.dialog=None
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parents: 320
diff changeset
144 return
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parents:
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145 if events_equal(e, START_NIGHT):
245
634491bf37e8 Change toolbar to gui.Toolbar -- gives nicer highlighting.
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parents: 237
diff changeset
146 self.game.gameboard.reset_states()
11
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147 return NightState(self.game)
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148 elif e.type is KEYDOWN and e.key == K_ESCAPE:
336
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diff changeset
149 self.dialog = check_exit()
202
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parents: 183
diff changeset
150 elif e.type is ANIM_ID:
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parents: 183
diff changeset
151 self.game.gameboard.run_animations()
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152 elif e.type is KEYDOWN and e.key == K_n:
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153 return pygame.event.post(START_NIGHT)
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parents:
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154 elif events_equal(e, GO_MAIN_MENU):
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parents:
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155 return MainMenuState(self.game)
14
d7f295c06a4b Split gameboard screen.
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parents: 12
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156 elif e.type is not QUIT:
151
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parents: 142
diff changeset
157 self.game.main_app.event(e)
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158
12
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159 def paint(self, screen):
151
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parents: 142
diff changeset
160 self.game.main_app.paint(screen)
12
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parents: 11
diff changeset
161 pygame.display.flip()
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parents: 11
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162
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diff changeset
163 def update(self, screen):
151
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parents: 142
diff changeset
164 self.game.gameboard.update()
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parents: 142
diff changeset
165 update = self.game.main_app.update(screen)
12
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parents: 11
diff changeset
166 pygame.display.update(update)
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parents: 11
diff changeset
167
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168 def loop(self):
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169 self.game.gameboard.loop()
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170
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parents:
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171 class NightState(State):
25
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172 def init(self):
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173 """Add some foxes to the farm"""
99
f5d56688943b Added background music support, and daytime and night time music (really animal sounds, not music)
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174 sound.stop_background_music()
223
527a5d4e3fa3 Disable tools at night.
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175 self.game.gameboard.start_night()
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2eec29085060 Color night and day.
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parents: 29
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176
98
725b292ca07b Added sounds killing foxes and chickens, and nightfall
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parents: 94
diff changeset
177 sound.play_sound("nightfall.ogg")
29
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178 # Add a timer to the event queue
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179 self.cycle_count = 0
233
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diff changeset
180 self.cycle_time = SLOW_ANIM_SPEED
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parents: 229
diff changeset
181 pygame.time.set_timer(MOVE_FOX_ID, 4*self.cycle_time)
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parents: 229
diff changeset
182 pygame.time.set_timer(ANIM_ID, self.cycle_time)
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18db99fda6bd Move spawing code from engine to gameboard - seems more natural.
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parents: 31
diff changeset
183 self.game.gameboard.spawn_foxes()
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parents: 98
diff changeset
184 sound.background_music("nighttime.ogg")
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parents: 15
diff changeset
185
116
d539ef5a3333 Add basic chicken->egg cycle
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parents: 99
diff changeset
186 self.game.gameboard.lay_eggs()
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parents: 99
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187
11
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parents:
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188 def event(self, e):
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parents:
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189 if events_equal(e, START_DAY):
139
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diff changeset
190 if self.game.gameboard.is_game_over():
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parents: 122
diff changeset
191 return GameOver(self.game)
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parents:
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192 return DayState(self.game)
320
9bf0e701a36e Switch between 'Finished Day' and 'Fast Forward' modes
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parents: 312
diff changeset
193 elif (e.type is KEYDOWN and e.key == K_d) or \
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parents: 312
diff changeset
194 events_equal(e, FAST_FORWARD):
233
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parents: 229
diff changeset
195 if self.cycle_time > FAST_ANIM_SPEED:
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parents: 229
diff changeset
196 self.cycle_time = FAST_ANIM_SPEED
222
322e6d3a46e4 Turn 'd' into a fast forward / normal speed toggle at night
Neil Muller <drnlmuller@gmail.com>
parents: 213
diff changeset
197 else:
233
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parents: 229
diff changeset
198 self.cycle_time = SLOW_ANIM_SPEED
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parents: 229
diff changeset
199 pygame.time.set_timer(ANIM_ID, self.cycle_time)
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parents: 229
diff changeset
200 pygame.time.set_timer(MOVE_FOX_ID, 4*self.cycle_time)
25
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parents: 15
diff changeset
201 elif e.type is KEYDOWN and e.key == K_ESCAPE:
336
82a18615a0ab Ask 'Are you sure?'
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parents: 320
diff changeset
202 if check_dialog(self.game.main_app):
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parents: 320
diff changeset
203 self.game.gameboard.reset_states()
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parents: 320
diff changeset
204 return GameOver(self.game)
202
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parents: 183
diff changeset
205 elif e.type is ANIM_ID:
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parents: 183
diff changeset
206 self.game.gameboard.run_animations()
29
2e88c680672c Minimal fox raid logic
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parents: 25
diff changeset
207 elif e.type is MOVE_FOX_ID:
233
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parents: 229
diff changeset
208 # Timer aren't nessecairly ordered, so we make sure
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Neil Muller <drnlmuller@gmail.com>
parents: 229
diff changeset
209 # we don't get a ANIM event until at least cycle after this
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parents: 229
diff changeset
210 pygame.time.set_timer(ANIM_ID, self.cycle_time)
237
4a87bfa5cc63 Twiddle animation cycle
Neil Muller <drnlmuller@gmail.com>
parents: 233
diff changeset
211 # Ensure any outstanding animitions get cleaned up
4a87bfa5cc63 Twiddle animation cycle
Neil Muller <drnlmuller@gmail.com>
parents: 233
diff changeset
212 self.game.gameboard.run_animations()
29
2e88c680672c Minimal fox raid logic
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parents: 25
diff changeset
213 self.cycle_count += 1
139
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parents: 122
diff changeset
214 if self.cycle_count > constants.NIGHT_LENGTH:
29
2e88c680672c Minimal fox raid logic
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parents: 25
diff changeset
215 return pygame.event.post(START_DAY)
122
d2b19131d537 Don't continue the night if we're not doing anything anymore
Neil Muller <drnlmuller@gmail.com>
parents: 118
diff changeset
216 if self.game.gameboard.move_foxes():
d2b19131d537 Don't continue the night if we're not doing anything anymore
Neil Muller <drnlmuller@gmail.com>
parents: 118
diff changeset
217 # All foxes are gone/safe, so dawn happens
d2b19131d537 Don't continue the night if we're not doing anything anymore
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parents: 118
diff changeset
218 return pygame.event.post(START_DAY)
25
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parents: 15
diff changeset
219 elif e.type is not QUIT:
151
082868bea873 Refactor UI so that only a single gui.App is used. Pass all UI events via main_app. Change Toolbar table to use .td() everywhere. Move toolbar to top.
Simon Cross <hodgestar@gmail.com>
parents: 142
diff changeset
220 self.game.main_app.event(e)
25
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parents: 15
diff changeset
221
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parents: 15
diff changeset
222 def loop(self):
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parents: 15
diff changeset
223 self.game.gameboard.loop()
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parents: 15
diff changeset
224
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parents: 15
diff changeset
225 def paint(self, screen):
151
082868bea873 Refactor UI so that only a single gui.App is used. Pass all UI events via main_app. Change Toolbar table to use .td() everywhere. Move toolbar to top.
Simon Cross <hodgestar@gmail.com>
parents: 142
diff changeset
226 self.game.main_app.paint(screen)
25
6d6ab0c1479d Add placing some chickens and foxes
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parents: 15
diff changeset
227 pygame.display.flip()
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parents: 15
diff changeset
228
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parents: 15
diff changeset
229 def update(self, screen):
151
082868bea873 Refactor UI so that only a single gui.App is used. Pass all UI events via main_app. Change Toolbar table to use .td() everywhere. Move toolbar to top.
Simon Cross <hodgestar@gmail.com>
parents: 142
diff changeset
230 self.game.gameboard.update()
082868bea873 Refactor UI so that only a single gui.App is used. Pass all UI events via main_app. Change Toolbar table to use .td() everywhere. Move toolbar to top.
Simon Cross <hodgestar@gmail.com>
parents: 142
diff changeset
231 update = self.game.main_app.update(screen)
25
6d6ab0c1479d Add placing some chickens and foxes
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parents: 15
diff changeset
232 pygame.display.update(update)
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parents: 15
diff changeset
233
139
1d73de63bd71 Add basic game over screen
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parents: 122
diff changeset
234 class GameOver(State):
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parents: 122
diff changeset
235 def init(self):
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parents: 122
diff changeset
236 """Setup everything"""
156
210fc1ea0516 Stop background music whenever state changes.
Simon Cross <hodgestar@gmail.com>
parents: 151
diff changeset
237 sound.stop_background_music()
151
082868bea873 Refactor UI so that only a single gui.App is used. Pass all UI events via main_app. Change Toolbar table to use .td() everywhere. Move toolbar to top.
Simon Cross <hodgestar@gmail.com>
parents: 142
diff changeset
238 self.game.create_game_over()
142
1597081e5a84 Disable timer when game is over
Neil Muller <drnlmuller@gmail.com>
parents: 141
diff changeset
239 pygame.time.set_timer(MOVE_FOX_ID, 0)
202
3074784c93f4 Animation support
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parents: 183
diff changeset
240 pygame.time.set_timer(ANIM_ID, 0)
139
1d73de63bd71 Add basic game over screen
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parents: 122
diff changeset
241
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parents: 122
diff changeset
242 def event(self, e):
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parents: 122
diff changeset
243 if e.type is KEYDOWN:
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parents: 122
diff changeset
244 if e.key == K_ESCAPE:
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Neil Muller <drnlmuller@gmail.com>
parents: 122
diff changeset
245 return MainMenuState(self.game)
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parents: 122
diff changeset
246 elif events_equal(e, GO_MAIN_MENU):
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parents: 122
diff changeset
247 return MainMenuState(self.game)
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parents: 122
diff changeset
248 elif e.type is not QUIT:
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parents: 122
diff changeset
249 self.game.main_app.event(e)
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parents: 122
diff changeset
250
1d73de63bd71 Add basic game over screen
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parents: 122
diff changeset
251 def paint(self, screen):
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parents: 122
diff changeset
252 screen.fill((0,0,0))
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parents: 122
diff changeset
253 self.game.main_app.paint(screen)
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parents: 122
diff changeset
254 pygame.display.flip()
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parents: 122
diff changeset
255
1d73de63bd71 Add basic game over screen
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parents: 122
diff changeset
256 def update(self, screen):
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parents: 122
diff changeset
257 update = self.game.main_app.update(screen)
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parents: 122
diff changeset
258 pygame.display.update(update)
1d73de63bd71 Add basic game over screen
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parents: 122
diff changeset
259
11
5d58a5b13731 Extremely rudimentary game engine.
Simon Cross <hodgestar@gmail.com>
parents:
diff changeset
260 # pygame events
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parents:
diff changeset
261
5d58a5b13731 Extremely rudimentary game engine.
Simon Cross <hodgestar@gmail.com>
parents:
diff changeset
262 def events_equal(e1, e2):
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Simon Cross <hodgestar@gmail.com>
parents:
diff changeset
263 """Compare two user events."""
5d58a5b13731 Extremely rudimentary game engine.
Simon Cross <hodgestar@gmail.com>
parents:
diff changeset
264 return (e1.type is e2.type and e1.name == e2.name)
5d58a5b13731 Extremely rudimentary game engine.
Simon Cross <hodgestar@gmail.com>
parents:
diff changeset
265
5d58a5b13731 Extremely rudimentary game engine.
Simon Cross <hodgestar@gmail.com>
parents:
diff changeset
266 START_DAY = pygame.event.Event(USEREVENT, name="START_DAY")
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Simon Cross <hodgestar@gmail.com>
parents:
diff changeset
267 START_NIGHT = pygame.event.Event(USEREVENT, name="START_NIGHT")
5d58a5b13731 Extremely rudimentary game engine.
Simon Cross <hodgestar@gmail.com>
parents:
diff changeset
268 GO_MAIN_MENU = pygame.event.Event(USEREVENT, name="GO_MAIN_MENU")
179
e2b5262c2b11 Add basic help screen
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parents: 162
diff changeset
269 GO_HELP_SCREEN = pygame.event.Event(USEREVENT, name="GO_HELP_SCREEN")
320
9bf0e701a36e Switch between 'Finished Day' and 'Fast Forward' modes
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parents: 312
diff changeset
270 FAST_FORWARD = pygame.event.Event(USEREVENT, name="FAST_FORWARD")
29
2e88c680672c Minimal fox raid logic
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parents: 25
diff changeset
271 MOVE_FOX_ID = USEREVENT + 1
202
3074784c93f4 Animation support
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parents: 183
diff changeset
272 ANIM_ID = USEREVENT + 6
29
2e88c680672c Minimal fox raid logic
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parents: 25
diff changeset
273 MOVE_FOXES = pygame.event.Event(MOVE_FOX_ID, name="MOVE_FOXES")
11
5d58a5b13731 Extremely rudimentary game engine.
Simon Cross <hodgestar@gmail.com>
parents:
diff changeset
274 QUIT = pygame.event.Event(QUIT)
233
d3d5352f5853 Twek speed loop. Document animation assumptions
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parents: 229
diff changeset
275
d3d5352f5853 Twek speed loop. Document animation assumptions
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parents: 229
diff changeset
276 # Due to the way pgu's loop timing works, these will only get proceesed
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parents: 229
diff changeset
277 # at intervals of 10ms, so there's no point in them not being multiples of 10
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parents: 229
diff changeset
278 FAST_ANIM_SPEED=20
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parents: 229
diff changeset
279 SLOW_ANIM_SPEED=50