Mercurial > rinkhals

annotate gamelib/engine.py @ 116:d539ef5a3333

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Add basic chicken->egg cycle
author Neil Muller <drnlmuller@gmail.com>
date Wed, 02 Sep 2009 20:04:47 +0000
parents f5d56688943b
children 2c76ed47fc44
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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 sound
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9
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10 class Engine(Game):
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11 def __init__(self, main_menu_app):
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12 self.main_menu_app = main_menu_app
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13 self.clock = pygame.time.Clock()
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14
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15 def tick(self):
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16 """Tic toc."""
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17 pygame.time.wait(10)
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18
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19 def create_game_board(self):
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20 self.gameboard = gameboard.GameBoard()
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21
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22 class MainMenuState(State):
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23 def event(self, e):
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24 if events_equal(e, START_DAY):
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25 self.game.create_game_board()
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26 return DayState(self.game)
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27 elif e.type is KEYDOWN:
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28 if e.key == K_ESCAPE:
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29 return Quit(self.game)
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30 elif e.key == K_s:
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31 self.game.create_game_board()
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32 return DayState(self.game)
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33 elif e.type is not QUIT:
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34 self.game.main_menu_app.event(e)
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35
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36 def paint(self, screen):
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37 screen.fill((0,0,0))
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38 self.game.main_menu_app.paint(screen)
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39 pygame.display.flip()
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40
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41 def update(self, screen):
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42 update = self.game.main_menu_app.update(screen)
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43 pygame.display.update(update)
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44
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45 class DayState(State):
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46 def init(self):
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47 """Add some chickens to the farm"""
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48 sound.stop_background_music()
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49 self.game.gameboard.tv.sun(True)
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50
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51 sound.play_sound("daybreak.ogg")
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52 # disable timer
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53 pygame.time.set_timer(MOVE_FOX_ID, 0)
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54 self.game.gameboard.clear_foxes()
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55 self.game.gameboard.update_chickens()
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56 sound.background_music("daytime.ogg")
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57 self.game.gameboard.hatch_eggs()
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58
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59 def event(self, e):
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60 if events_equal(e, START_NIGHT):
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61 return NightState(self.game)
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62 elif e.type is KEYDOWN and e.key == K_ESCAPE:
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63 return MainMenuState(self.game)
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64 elif e.type is KEYDOWN and e.key == K_n:
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65 return pygame.event.post(START_NIGHT)
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66 elif events_equal(e, GO_MAIN_MENU):
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67 return MainMenuState(self.game)
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68 elif e.type is not QUIT:
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69 self.game.gameboard.event(e)
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71 def paint(self, screen):
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72 self.game.gameboard.paint(screen)
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73 pygame.display.flip()
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74
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75 def update(self, screen):
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76 update = self.game.gameboard.update(screen)
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77 pygame.display.update(update)
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78
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79 def loop(self):
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80 self.game.gameboard.loop()
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81
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82 class NightState(State):
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83 def init(self):
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84 """Add some foxes to the farm"""
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85 sound.stop_background_music()
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86 self.game.gameboard.tv.sun(False)
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87
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88 sound.play_sound("nightfall.ogg")
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89 # Add a timer to the event queue
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90 self.cycle_count = 0
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91 pygame.time.set_timer(MOVE_FOX_ID, 200)
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92 self.game.gameboard.spawn_foxes()
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93 sound.background_music("nighttime.ogg")
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95 self.game.gameboard.lay_eggs()
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96
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97 def event(self, e):
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98 if events_equal(e, START_DAY):
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99 return DayState(self.game)
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100 elif e.type is KEYDOWN and e.key == K_d:
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101 return pygame.event.post(START_DAY)
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102 elif e.type is KEYDOWN and e.key == K_ESCAPE:
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103 return MainMenuState(self.game)
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104 elif e.type is MOVE_FOX_ID:
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105 self.cycle_count += 1
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106 if self.cycle_count > NIGHT_LENGTH:
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107 return pygame.event.post(START_DAY)
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108 return self.game.gameboard.move_foxes()
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109 elif e.type is not QUIT:
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110 self.game.gameboard.event(e)
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111
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112 def loop(self):
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113 self.game.gameboard.loop()
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114
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115 def paint(self, screen):
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116 self.game.gameboard.paint(screen)
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117 pygame.display.flip()
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118
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119 def update(self, screen):
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120 update = self.game.gameboard.update(screen)
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121 pygame.display.update(update)
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122
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123 # pygame events
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124
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125 def events_equal(e1, e2):
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126 """Compare two user events."""
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127 return (e1.type is e2.type and e1.name == e2.name)
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128
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129 START_DAY = pygame.event.Event(USEREVENT, name="START_DAY")
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130 START_NIGHT = pygame.event.Event(USEREVENT, name="START_NIGHT")
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131 GO_MAIN_MENU = pygame.event.Event(USEREVENT, name="GO_MAIN_MENU")
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132 MOVE_FOX_ID = USEREVENT + 1
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133 MOVE_FOXES = pygame.event.Event(MOVE_FOX_ID, name="MOVE_FOXES")
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134 QUIT = pygame.event.Event(QUIT)
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135 NIGHT_LENGTH = 150