Mercurial > pyntnclick
annotate pyntnclick/engine.py @ 600:fabce47e542f pyntnclick
Stop using albow (at least for the menu). Breaks the world. Please fix it, kthx
author | Stefano Rivera <stefano@rivera.za.net> |
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date | Sat, 11 Feb 2012 19:56:30 +0200 |
parents | 5496dcd16a84 |
children | f2b1ddcc4986 |
rev | line source |
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1 """Game engine and top-level game loop.""" |
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2 |
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3 import pygame |
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4 import pygame.event |
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5 import pygame.display |
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6 import pygame.time |
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7 from pygame.locals import QUIT, USEREVENT |
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8 |
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9 |
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10 class Engine(object): |
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11 def __init__(self, game_description): |
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12 self._screen = None |
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13 self._game_description = game_description |
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14 |
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15 def set_screen(self, screen): |
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16 if self._screen is not None: |
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17 self._screen.on_exit() |
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18 self._screen = screen |
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19 if self._screen is not None: |
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20 self._screen.on_enter() |
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21 |
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22 def run(self): |
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23 """Game loop.""" |
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24 |
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25 get_events = pygame.event.get |
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26 flip = pygame.display.flip |
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27 clock = pygame.time.Clock() |
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28 while True: |
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29 events = get_events() |
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30 for ev in events: |
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31 if ev.type == QUIT: |
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32 return |
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33 elif ScreenChangeEvent.matches(ev): |
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34 self.set_screen(ev.screen) |
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35 else: |
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36 self._screen.dispatch(ev) |
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37 surface = pygame.display.get_surface() |
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38 self._screen.draw(surface) |
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39 flip() |
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40 self._fps = 1000.0 / clock.tick( |
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41 self._game_description.constants.frame_rate) |
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42 |
fabce47e542f
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43 |
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44 class Screen(object): |
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45 """A top level object for the screen being displayed""" |
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46 |
fabce47e542f
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47 def __init__(self, game_description): |
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48 # Avoid import loop |
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49 from pyntnclick.widgets.base import Container |
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50 |
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51 self.game_description = game_description |
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52 self.resource = game_description.resource |
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53 |
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54 self.surface_size = game_description.constants.screen |
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55 self.surface = None |
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56 self.container = Container(pygame.Rect((0, 0), self.surface_size)) |
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57 self.setup() |
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58 |
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59 def on_enter(self): |
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60 """Called when this becomes the current screen.""" |
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61 # Create the surface here as flipping between editor and |
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62 # other things kills pygame.display |
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63 self.surface = pygame.Surface(self.surface_size) |
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64 |
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65 def on_exit(self): |
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66 """Called when this stops being the current screen.""" |
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67 self.surface = None |
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68 |
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69 def setup(self): |
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70 """Override for initialization""" |
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71 pass |
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72 |
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73 def dispatch(self, ev): |
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74 self.container.event(ev) |
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75 |
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76 def draw_background(self): |
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77 self.surface.fill(pygame.Color('gray')) |
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78 |
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79 def draw(self, surface): |
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80 if self.surface: |
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81 self.draw_background() |
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82 self.container.draw(self.surface) |
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83 surface.blit(self.surface, self.surface.get_rect()) |
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84 |
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85 def display_dialog(self, dialog): |
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86 self.container.paused = True |
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87 self.container.add(dialog) |
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88 dialog.grab_focus() |
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89 |
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90 |
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91 class UserEvent(object): |
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92 """A user event type allowing subclassing, |
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93 to provide an infinate number of user-defined events |
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94 """ |
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95 |
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96 TYPE = "UNKNOWN" |
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97 |
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98 @classmethod |
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99 def post(cls, **kws): |
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100 ev = pygame.event.Event(USEREVENT, utype=cls.TYPE, **kws) |
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101 pygame.event.post(ev) |
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102 |
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103 @classmethod |
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104 def matches(cls, ev): |
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105 return ev.type == USEREVENT and ev.utype == cls.TYPE |
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106 |
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107 |
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108 class ScreenChangeEvent(UserEvent): |
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109 |
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110 TYPE = "SCREEN_CHANGE" |
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111 |
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112 @classmethod |
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113 def post(cls, screen): |
5496dcd16a84
Add pyntnclick.engine, based on mamba
Stefano Rivera <stefano@rivera.za.net>
parents:
diff
changeset
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114 super(ScreenChangeEvent, cls).post(screen=screen) |