Mercurial > rinkhals
annotate gamelib/engine.py @ 262:d508248041ff
avoid passing events in twice
| author | Neil Muller <drnlmuller@gmail.com> |
|---|---|
| date | Sat, 05 Sep 2009 13:36:00 +0000 |
| parents | f399e4926c36 |
| children | dd1ffee5ccf5 |
| rev | line source |
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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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5 |
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6 import gameboard |
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7 import gameover |
| 94 | 8 import sound |
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9 import constants |
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10 import mainmenu |
| 179 | 11 import helpscreen |
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12 |
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13 class Engine(Game): |
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14 def __init__(self, main_app): |
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15 self.main_app = main_app |
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16 self.clock = pygame.time.Clock() |
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17 self.main_menu = mainmenu.make_main_menu() |
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18 self._open_window = None |
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19 self.scoreboard = gameover.ScoreTable() |
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20 self.gameboard = None |
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21 |
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22 def tick(self): |
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23 """Tic toc.""" |
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24 pygame.time.wait(10) |
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25 |
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26 def open_window(self, window): |
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27 """Open a widget as the main window.""" |
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28 if self._open_window is not None: |
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29 self.main_app.close(self._open_window) |
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30 self.main_app.open(window) |
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31 self._open_window = window |
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32 |
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33 def create_game_board(self): |
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34 """Create and open a gameboard window.""" |
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35 self.gameboard = gameboard.GameBoard(self.main_app) |
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36 self.open_window(self.gameboard.get_top_widget()) |
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37 |
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38 def set_main_menu(self): |
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39 """Open the main menu""" |
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40 self.open_window(self.main_menu) |
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41 |
| 179 | 42 def set_help_screen(self): |
| 43 """Open the main menu""" | |
| 44 help_screen = helpscreen.make_help_screen() | |
| 45 self.open_window(help_screen) | |
| 46 | |
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47 def create_game_over(self): |
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48 """Create and open the Game Over window""" |
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49 game_over = gameover.create_game_over(self.gameboard, self.scoreboard) |
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50 self.gameboard = None |
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51 self.open_window(game_over) |
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52 |
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53 def event(self, e): |
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54 if not Game.event(self, e): |
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55 if self.gameboard: |
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56 return self.gameboard.event(e) |
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57 return False |
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58 return True |
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59 |
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60 |
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61 class MainMenuState(State): |
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62 def init(self): |
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63 sound.stop_background_music() |
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64 self.game.set_main_menu() |
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65 |
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66 def event(self, e): |
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67 if events_equal(e, START_DAY): |
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68 self.game.create_game_board() |
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69 return DayState(self.game) |
| 179 | 70 elif events_equal(e, GO_HELP_SCREEN): |
| 71 return HelpScreenState(self.game) | |
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72 elif e.type is KEYDOWN: |
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73 if e.key == K_ESCAPE: |
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74 return Quit(self.game) |
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75 elif e.key == K_s: |
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76 self.game.create_game_board() |
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77 return DayState(self.game) |
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78 elif e.key == K_i: |
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79 return HelpScreenState(self.game) |
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80 elif e.type is not QUIT: |
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81 self.game.main_app.event(e) |
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82 |
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83 def paint(self, screen): |
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84 screen.fill((0,0,0)) |
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85 self.game.main_app.paint(screen) |
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86 pygame.display.flip() |
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87 |
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88 def update(self, screen): |
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89 update = self.game.main_app.update(screen) |
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90 pygame.display.update(update) |
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91 |
| 179 | 92 class HelpScreenState(State): |
| 93 def init(self): | |
| 94 sound.stop_background_music() | |
| 95 self.game.set_help_screen() | |
| 96 | |
| 97 def event(self, e): | |
| 98 if e.type is KEYDOWN and e.key == K_ESCAPE: | |
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99 return MainMenuState(self.game) |
| 179 | 100 elif events_equal(e, GO_MAIN_MENU): |
| 101 return MainMenuState(self.game) | |
| 102 elif e.type is not QUIT: | |
| 103 self.game.main_app.event(e) | |
| 104 | |
| 105 def paint(self, screen): | |
| 106 screen.fill((0,0,0)) | |
| 107 self.game.main_app.paint(screen) | |
| 108 pygame.display.flip() | |
| 109 | |
| 110 def update(self, screen): | |
| 111 update = self.game.main_app.update(screen) | |
| 112 pygame.display.update(update) | |
| 113 | |
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114 class DayState(State): |
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115 def init(self): |
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116 """Add some chickens to the farm""" |
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117 sound.stop_background_music() |
| 223 | 118 self.game.gameboard.start_day() |
| 30 | 119 |
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120 sound.play_sound("daybreak.ogg") |
| 29 | 121 # disable timer |
| 122 pygame.time.set_timer(MOVE_FOX_ID, 0) | |
| 237 | 123 pygame.time.set_timer(ANIM_ID, SLOW_ANIM_SPEED) |
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124 self.game.gameboard.advance_day() |
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125 self.game.gameboard.clear_foxes() |
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126 sound.background_music("daytime.ogg") |
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116
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127 self.game.gameboard.hatch_eggs() |
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128 |
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129 def event(self, e): |
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130 if events_equal(e, START_NIGHT): |
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131 self.game.gameboard.reset_states() |
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132 return NightState(self.game) |
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133 elif e.type is KEYDOWN and e.key == K_ESCAPE: |
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134 self.game.gameboard.reset_states() |
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135 return GameOver(self.game) |
| 202 | 136 elif e.type is ANIM_ID: |
| 137 self.game.gameboard.run_animations() | |
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138 elif e.type is KEYDOWN and e.key == K_n: |
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139 return pygame.event.post(START_NIGHT) |
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140 elif events_equal(e, GO_MAIN_MENU): |
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141 return MainMenuState(self.game) |
| 14 | 142 elif e.type is not QUIT: |
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143 self.game.main_app.event(e) |
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144 |
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145 def paint(self, screen): |
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146 self.game.main_app.paint(screen) |
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147 pygame.display.flip() |
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148 |
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149 def update(self, screen): |
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150 self.game.gameboard.update() |
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151 update = self.game.main_app.update(screen) |
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152 pygame.display.update(update) |
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153 |
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154 def loop(self): |
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155 self.game.gameboard.loop() |
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156 |
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157 class NightState(State): |
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158 def init(self): |
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159 """Add some foxes to the farm""" |
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160 sound.stop_background_music() |
| 223 | 161 self.game.gameboard.start_night() |
| 30 | 162 |
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163 sound.play_sound("nightfall.ogg") |
| 29 | 164 # Add a timer to the event queue |
| 165 self.cycle_count = 0 | |
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166 self.cycle_time = SLOW_ANIM_SPEED |
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167 pygame.time.set_timer(MOVE_FOX_ID, 4*self.cycle_time) |
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168 pygame.time.set_timer(ANIM_ID, self.cycle_time) |
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169 self.game.gameboard.spawn_foxes() |
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170 sound.background_music("nighttime.ogg") |
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171 |
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172 self.game.gameboard.lay_eggs() |
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173 |
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174 def event(self, e): |
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175 if events_equal(e, START_DAY): |
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176 if self.game.gameboard.is_game_over(): |
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177 return GameOver(self.game) |
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178 return DayState(self.game) |
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179 elif e.type is KEYDOWN and e.key == K_d: |
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180 if self.cycle_time > FAST_ANIM_SPEED: |
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181 self.cycle_time = FAST_ANIM_SPEED |
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182 else: |
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183 self.cycle_time = SLOW_ANIM_SPEED |
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184 pygame.time.set_timer(ANIM_ID, self.cycle_time) |
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185 pygame.time.set_timer(MOVE_FOX_ID, 4*self.cycle_time) |
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186 elif e.type is KEYDOWN and e.key == K_ESCAPE: |
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187 self.game.gameboard.set_cursor() |
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188 return GameOver(self.game) |
| 202 | 189 elif e.type is ANIM_ID: |
| 190 self.game.gameboard.run_animations() | |
| 29 | 191 elif e.type is MOVE_FOX_ID: |
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192 # Timer aren't nessecairly ordered, so we make sure |
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193 # we don't get a ANIM event until at least cycle after this |
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194 pygame.time.set_timer(ANIM_ID, self.cycle_time) |
| 237 | 195 # Ensure any outstanding animitions get cleaned up |
| 196 self.game.gameboard.run_animations() | |
| 29 | 197 self.cycle_count += 1 |
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198 if self.cycle_count > constants.NIGHT_LENGTH: |
| 29 | 199 return pygame.event.post(START_DAY) |
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200 if self.game.gameboard.move_foxes(): |
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201 # All foxes are gone/safe, so dawn happens |
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202 return pygame.event.post(START_DAY) |
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203 elif e.type is not QUIT: |
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204 self.game.main_app.event(e) |
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205 |
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206 def loop(self): |
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207 self.game.gameboard.loop() |
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208 |
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209 def paint(self, screen): |
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210 self.game.main_app.paint(screen) |
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211 pygame.display.flip() |
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212 |
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213 def update(self, screen): |
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214 self.game.gameboard.update() |
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215 update = self.game.main_app.update(screen) |
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216 pygame.display.update(update) |
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217 |
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218 class GameOver(State): |
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219 def init(self): |
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220 """Setup everything""" |
|
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221 sound.stop_background_music() |
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222 self.game.create_game_over() |
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223 pygame.time.set_timer(MOVE_FOX_ID, 0) |
| 202 | 224 pygame.time.set_timer(ANIM_ID, 0) |
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225 |
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226 def event(self, e): |
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227 if e.type is KEYDOWN: |
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228 if e.key == K_ESCAPE: |
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229 return MainMenuState(self.game) |
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230 elif events_equal(e, GO_MAIN_MENU): |
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231 return MainMenuState(self.game) |
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232 elif e.type is not QUIT: |
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233 self.game.main_app.event(e) |
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234 |
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235 def paint(self, screen): |
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236 screen.fill((0,0,0)) |
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237 self.game.main_app.paint(screen) |
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238 pygame.display.flip() |
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239 |
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240 def update(self, screen): |
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241 update = self.game.main_app.update(screen) |
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242 pygame.display.update(update) |
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243 |
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244 # pygame events |
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245 |
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246 def events_equal(e1, e2): |
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247 """Compare two user events.""" |
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248 return (e1.type is e2.type and e1.name == e2.name) |
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249 |
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250 START_DAY = pygame.event.Event(USEREVENT, name="START_DAY") |
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251 START_NIGHT = pygame.event.Event(USEREVENT, name="START_NIGHT") |
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252 GO_MAIN_MENU = pygame.event.Event(USEREVENT, name="GO_MAIN_MENU") |
| 179 | 253 GO_HELP_SCREEN = pygame.event.Event(USEREVENT, name="GO_HELP_SCREEN") |
| 29 | 254 MOVE_FOX_ID = USEREVENT + 1 |
| 202 | 255 ANIM_ID = USEREVENT + 6 |
| 29 | 256 MOVE_FOXES = pygame.event.Event(MOVE_FOX_ID, name="MOVE_FOXES") |
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257 QUIT = pygame.event.Event(QUIT) |
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258 |
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259 # Due to the way pgu's loop timing works, these will only get proceesed |
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260 # at intervals of 10ms, so there's no point in them not being multiples of 10 |
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261 FAST_ANIM_SPEED=20 |
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262 SLOW_ANIM_SPEED=50 |