Mercurial > mamba
annotate mamba/engine.py @ 92:1e9da4893d51
Add size parameter to habitats
author | Neil Muller <drnlmuller@gmail.com> |
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date | Sun, 11 Sep 2011 19:09:50 +0200 |
parents | 2aa652b92449 |
children | 6c11991e23fb |
rev | line source |
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12 | 1 """Game engine and top-level game loop.""" |
2 | |
38 | 3 from mamba.constants import SCREEN |
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4 from mamba.widgets.base import Container |
38 | 5 |
12 | 6 import pygame.event |
7 import pygame.display | |
38 | 8 import pygame |
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9 from pygame.locals import QUIT, USEREVENT |
12 | 10 |
11 | |
12 class Engine(object): | |
13 def __init__(self): | |
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14 self._habitat = None |
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15 |
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16 def set_habitat(self, habitat): |
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17 if self._habitat is not None: |
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18 self._habitat.on_exit() |
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19 self._habitat = habitat |
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20 if self._habitat is not None: |
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21 self._habitat.on_enter() |
12 | 22 |
23 def run(self): | |
24 """Game loop.""" | |
25 get_events = pygame.event.get | |
26 flip = pygame.display.flip | |
27 while True: | |
28 events = get_events() | |
29 for ev in events: | |
30 if ev.type is QUIT: | |
31 return | |
61 | 32 elif NewHabitatEvent.matches(ev): |
33 self.set_habitat(ev.habitat) | |
34 else: | |
35 self._habitat.dispatch(ev) | |
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36 surface = pygame.display.get_surface() |
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37 self._habitat.draw(surface) |
12 | 38 flip() |
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39 |
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40 |
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41 class Habitat(object): |
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42 |
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43 def __init__(self, size=SCREEN): |
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44 self.surface_size = size |
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45 self.surface = None |
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46 self.container = Container(pygame.Rect((0, 0), self.surface_size, |
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47 root=True)) |
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48 |
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49 def on_enter(self): |
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50 """Called when this becomes the current habitat.""" |
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51 # Create the surface here as flipping between editor and |
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52 # other things kills pygame.display |
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parents:
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53 self.surface = pygame.Surface(self.surface_size) |
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parents:
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54 |
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parents:
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55 def on_exit(self): |
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56 """Called when this stops being the current habitat.""" |
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57 self.surface = None |
51
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Simon Cross <hodgestar@gmail.com>
parents:
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58 |
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parents:
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59 def dispatch(self, ev): |
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Stefano Rivera <stefano@rivera.za.net>
parents:
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60 self.container.event(ev) |
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parents:
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61 |
19
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Simon Cross <hodgestar@gmail.com>
parents:
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62 def draw(self, surface): |
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parents:
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63 if self.surface: |
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64 self.surface.fill(pygame.Color('black')) |
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parents:
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65 self.container.draw(self.surface) |
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parents:
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66 surface.blit(self.surface, self.surface.get_rect()) |
15
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Simon Cross <hodgestar@gmail.com>
parents:
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67 |
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Simon Cross <hodgestar@gmail.com>
parents:
13
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68 |
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parents:
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69 class UserEvent(object): |
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70 |
61 | 71 TYPE = "UNKNOWN" |
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72 |
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73 @classmethod |
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74 def post(cls, **kws): |
61 | 75 ev = pygame.event.Event(USEREVENT, utype=cls.TYPE, **kws) |
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parents:
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76 pygame.event.post(ev) |
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parents:
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77 |
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parents:
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78 @classmethod |
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79 def matches(cls, ev): |
61 | 80 return ev.type is USEREVENT and ev.utype == cls.TYPE |
81 | |
82 | |
83 class NewHabitatEvent(UserEvent): | |
84 | |
85 TYPE = "NEW_HABITAT" | |
86 | |
87 @classmethod | |
88 def post(cls, habitat): | |
62 | 89 super(NewHabitatEvent, cls).post(habitat=habitat) |