Mercurial > rinkhals

annotate gamelib/engine.py @ 139:1d73de63bd71

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Add basic game over screen
author Neil Muller <drnlmuller@gmail.com>
date Wed, 02 Sep 2009 22:48:39 +0000
parents d2b19131d537
children dc4bb10cc54c
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1 """Game engine and states."""
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2
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3 from pgu.engine import Game, State, Quit
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4 import pygame
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5 from pygame.locals import USEREVENT, QUIT, KEYDOWN, K_ESCAPE, K_n, K_d, K_s
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6
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7 import gameboard
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8 import gameover
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9 import sound
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10 import constants
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11 import mainmenu
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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
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18 def tick(self):
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19 """Tic toc."""
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20 pygame.time.wait(10)
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21
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22 def create_game_board(self):
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23 self.gameboard = gameboard.GameBoard()
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24
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25 def set_main_menu(self):
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26 """Create the main menu"""
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27 mainmenu.add_main_menu(self.main_app)
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28
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29 def generate_score(self):
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30 """Create the Game Over state"""
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31 gameover.add_game_over(self.main_app, self.gameboard)
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32
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33 class MainMenuState(State):
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34 def init(self):
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35 self.game.set_main_menu()
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36
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37 def event(self, e):
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38 if events_equal(e, START_DAY):
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39 self.game.create_game_board()
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40 return DayState(self.game)
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41 elif e.type is KEYDOWN:
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42 if e.key == K_ESCAPE:
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43 return Quit(self.game)
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44 elif e.key == K_s:
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45 self.game.create_game_board()
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46 return DayState(self.game)
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47 elif e.type is not QUIT:
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48 self.game.main_app.event(e)
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49
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50 def paint(self, screen):
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51 screen.fill((0,0,0))
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52 self.game.main_app.paint(screen)
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53 pygame.display.flip()
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54
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55 def update(self, screen):
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56 update = self.game.main_app.update(screen)
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57 pygame.display.update(update)
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58
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59 class DayState(State):
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60 def init(self):
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61 """Add some chickens to the farm"""
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62 sound.stop_background_music()
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63 self.game.gameboard.tv.sun(True)
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64
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65 sound.play_sound("daybreak.ogg")
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66 # disable timer
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67 pygame.time.set_timer(MOVE_FOX_ID, 0)
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68 self.game.gameboard.advance_day()
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69 self.game.gameboard.clear_foxes()
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70 sound.background_music("daytime.ogg")
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71 self.game.gameboard.hatch_eggs()
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72
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73 def event(self, e):
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74 if events_equal(e, START_NIGHT):
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75 return NightState(self.game)
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76 elif e.type is KEYDOWN and e.key == K_ESCAPE:
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77 return MainMenuState(self.game)
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78 elif e.type is KEYDOWN and e.key == K_n:
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79 return pygame.event.post(START_NIGHT)
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80 elif events_equal(e, GO_MAIN_MENU):
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81 return MainMenuState(self.game)
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82 elif e.type is not QUIT:
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83 self.game.gameboard.event(e)
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84
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85 def paint(self, screen):
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86 self.game.gameboard.paint(screen)
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87 pygame.display.flip()
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88
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89 def update(self, screen):
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90 update = self.game.gameboard.update(screen)
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91 pygame.display.update(update)
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92
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93 def loop(self):
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94 self.game.gameboard.loop()
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95
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96 class NightState(State):
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97 def init(self):
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98 """Add some foxes to the farm"""
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99 sound.stop_background_music()
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100 self.game.gameboard.tv.sun(False)
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101
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102 sound.play_sound("nightfall.ogg")
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103 # Add a timer to the event queue
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104 self.cycle_count = 0
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105 pygame.time.set_timer(MOVE_FOX_ID, 200)
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106 self.game.gameboard.spawn_foxes()
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107 sound.background_music("nighttime.ogg")
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108
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109 self.game.gameboard.lay_eggs()
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110
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111 def event(self, e):
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112 if events_equal(e, START_DAY):
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113 if self.game.gameboard.is_game_over():
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114 return GameOver(self.game)
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115 return DayState(self.game)
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116 elif e.type is KEYDOWN and e.key == K_d:
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117 return pygame.event.post(START_DAY)
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118 elif e.type is KEYDOWN and e.key == K_ESCAPE:
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119 return MainMenuState(self.game)
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120 elif e.type is MOVE_FOX_ID:
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121 self.cycle_count += 1
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122 if self.cycle_count > constants.NIGHT_LENGTH:
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123 return pygame.event.post(START_DAY)
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124 if self.game.gameboard.move_foxes():
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125 # All foxes are gone/safe, so dawn happens
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126 return pygame.event.post(START_DAY)
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127 elif e.type is not QUIT:
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128 self.game.gameboard.event(e)
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129
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130 def loop(self):
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131 self.game.gameboard.loop()
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132
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133 def paint(self, screen):
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134 self.game.gameboard.paint(screen)
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135 pygame.display.flip()
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136
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137 def update(self, screen):
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138 update = self.game.gameboard.update(screen)
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139 pygame.display.update(update)
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140
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141 class GameOver(State):
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142 def init(self):
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143 """Setup everything"""
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144 self.game.gameboard.tv.sun(True)
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145 self.game.generate_score()
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146
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147 def event(self, e):
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148 if e.type is KEYDOWN:
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149 if e.key == K_ESCAPE:
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150 return MainMenuState(self.game)
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151 elif events_equal(e, GO_MAIN_MENU):
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152 return MainMenuState(self.game)
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153 elif e.type is not QUIT:
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154 self.game.main_app.event(e)
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155
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156 def paint(self, screen):
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157 screen.fill((0,0,0))
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158 self.game.main_app.paint(screen)
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159 pygame.display.flip()
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160
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161 def update(self, screen):
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162 update = self.game.main_app.update(screen)
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163 pygame.display.update(update)
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164
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165 # pygame events
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166
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167 def events_equal(e1, e2):
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168 """Compare two user events."""
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169 return (e1.type is e2.type and e1.name == e2.name)
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170
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171 START_DAY = pygame.event.Event(USEREVENT, name="START_DAY")
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172 START_NIGHT = pygame.event.Event(USEREVENT, name="START_NIGHT")
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173 GO_MAIN_MENU = pygame.event.Event(USEREVENT, name="GO_MAIN_MENU")
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174 MOVE_FOX_ID = USEREVENT + 1
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175 MOVE_FOXES = pygame.event.Event(MOVE_FOX_ID, name="MOVE_FOXES")
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176 QUIT = pygame.event.Event(QUIT)