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annotate gamelib/engine.py @ 11:5d58a5b13731

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Extremely rudimentary game engine.
author Simon Cross <hodgestar@gmail.com>
date Sun, 30 Aug 2009 15:11:44 +0000
parents
children 8a7319e4853a
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11
5d58a5b13731 Extremely rudimentary game engine.
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1 """Game engine and states."""
5d58a5b13731 Extremely rudimentary game engine.
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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
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6
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7 class Engine(Game):
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8 def __init__(self, main_menu_app):
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9 self.main_menu_app = main_menu_app
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10 self.clock = pygame.time.Clock()
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11
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12 def tick(self):
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13 """Tic toc."""
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14 pygame.time.wait(10)
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15
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16 class MainMenuState(State):
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17 def event(self, e):
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18 if events_equal(e, START_DAY):
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19 return DayState(self.game)
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20 elif e.type is KEYDOWN and e.key == K_ESCAPE:
5d58a5b13731 Extremely rudimentary game engine.
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21 return Quit(self.game)
5d58a5b13731 Extremely rudimentary game engine.
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22 elif e.type is not QUIT:
5d58a5b13731 Extremely rudimentary game engine.
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23 self.game.main_menu_app.event(e)
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24
5d58a5b13731 Extremely rudimentary game engine.
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25 def paint(self, screen):
5d58a5b13731 Extremely rudimentary game engine.
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26 screen.fill((0,0,0))
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27 self.game.main_menu_app.paint(screen)
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28 pygame.display.flip()
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29
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30 class DayState(State):
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31 def event(self, e):
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32 if events_equal(e, START_NIGHT):
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33 return NightState(self.game)
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34 elif e.type is KEYDOWN and e.key == K_ESCAPE:
5d58a5b13731 Extremely rudimentary game engine.
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35 return MainMenuState(self.game)
5d58a5b13731 Extremely rudimentary game engine.
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36 elif events_equal(e, GO_MAIN_MENU):
5d58a5b13731 Extremely rudimentary game engine.
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37 return MainMenuState(self.game)
5d58a5b13731 Extremely rudimentary game engine.
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38
5d58a5b13731 Extremely rudimentary game engine.
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39 class NightState(State):
5d58a5b13731 Extremely rudimentary game engine.
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40 def event(self, e):
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41 if events_equal(e, START_DAY):
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42 return DayState(self.game)
5d58a5b13731 Extremely rudimentary game engine.
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43
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44 # pygame events
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45
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46 def events_equal(e1, e2):
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47 """Compare two user events."""
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48 return (e1.type is e2.type and e1.name == e2.name)
5d58a5b13731 Extremely rudimentary game engine.
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49
5d58a5b13731 Extremely rudimentary game engine.
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50 START_DAY = pygame.event.Event(USEREVENT, name="START_DAY")
5d58a5b13731 Extremely rudimentary game engine.
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51 START_NIGHT = pygame.event.Event(USEREVENT, name="START_NIGHT")
5d58a5b13731 Extremely rudimentary game engine.
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52 GO_MAIN_MENU = pygame.event.Event(USEREVENT, name="GO_MAIN_MENU")
5d58a5b13731 Extremely rudimentary game engine.
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53 QUIT = pygame.event.Event(QUIT)