Mercurial > skaapsteker
annotate skaapsteker/engine.py @ 262:de60329cfc9f
Factor out sound stuff
author | Neil Muller <drnlmuller@gmail.com> |
---|---|
date | Fri, 08 Apr 2011 11:29:37 +0200 |
parents | 8d7edd77bfbf |
children | afd9256ad682 |
rev | line source |
---|---|
11
249814efa91b
Create game engine. Enable quitting.
Simon Cross <hodgestar@gmail.com>
parents:
diff
changeset
|
1 """Top-level engine for switching scenes.""" |
249814efa91b
Create game engine. Enable quitting.
Simon Cross <hodgestar@gmail.com>
parents:
diff
changeset
|
2 |
249814efa91b
Create game engine. Enable quitting.
Simon Cross <hodgestar@gmail.com>
parents:
diff
changeset
|
3 import pygame.display |
249814efa91b
Create game engine. Enable quitting.
Simon Cross <hodgestar@gmail.com>
parents:
diff
changeset
|
4 import pygame.time |
249814efa91b
Create game engine. Enable quitting.
Simon Cross <hodgestar@gmail.com>
parents:
diff
changeset
|
5 import pygame.event |
14 | 6 from pygame.locals import QUIT, USEREVENT |
11
249814efa91b
Create game engine. Enable quitting.
Simon Cross <hodgestar@gmail.com>
parents:
diff
changeset
|
7 |
127
e1dd3b785269
Initial game state stuff.
Jeremy Thurgood <firxen@gmail.com>
parents:
126
diff
changeset
|
8 |
11
249814efa91b
Create game engine. Enable quitting.
Simon Cross <hodgestar@gmail.com>
parents:
diff
changeset
|
9 class Engine(object): |
249814efa91b
Create game engine. Enable quitting.
Simon Cross <hodgestar@gmail.com>
parents:
diff
changeset
|
10 |
262 | 11 def __init__(self, soundsystem): |
250
8d7edd77bfbf
Start hooking up NPC interactions.
Simon Cross <hodgestar@gmail.com>
parents:
249
diff
changeset
|
12 # avoid circular imports |
8d7edd77bfbf
Start hooking up NPC interactions.
Simon Cross <hodgestar@gmail.com>
parents:
249
diff
changeset
|
13 from .gamestate import GameState |
11
249814efa91b
Create game engine. Enable quitting.
Simon Cross <hodgestar@gmail.com>
parents:
diff
changeset
|
14 self._framerate = 60 |
14 | 15 self._current_scene = None |
123 | 16 self._fpss = [self._framerate] * 100 |
17 self._cur_frame = 0 | |
189
9d08f99b5ddf
Add npcs to gamestate. Update gamestate. Pass world around a bit. Some other stuff.
Simon Cross <hodgestar@gmail.com>
parents:
165
diff
changeset
|
18 self.game_state = GameState("game.json") |
262 | 19 self.soundsystem = soundsystem |
14 | 20 |
21 def change_scene(self, next_scene): | |
262 | 22 self.soundsystem.stop_music() |
14 | 23 if self._current_scene is not None: |
24 self._current_scene.leave() | |
25 self._current_scene = next_scene | |
26 self._current_scene.enter() | |
11
249814efa91b
Create game engine. Enable quitting.
Simon Cross <hodgestar@gmail.com>
parents:
diff
changeset
|
27 |
249814efa91b
Create game engine. Enable quitting.
Simon Cross <hodgestar@gmail.com>
parents:
diff
changeset
|
28 def run(self): |
249814efa91b
Create game engine. Enable quitting.
Simon Cross <hodgestar@gmail.com>
parents:
diff
changeset
|
29 """Run the game loop dispatching events as necessary.""" |
14 | 30 assert self._current_scene is not None |
11
249814efa91b
Create game engine. Enable quitting.
Simon Cross <hodgestar@gmail.com>
parents:
diff
changeset
|
31 clock = pygame.time.Clock() |
14 | 32 surface = pygame.display.get_surface() |
11
249814efa91b
Create game engine. Enable quitting.
Simon Cross <hodgestar@gmail.com>
parents:
diff
changeset
|
33 while True: |
249814efa91b
Create game engine. Enable quitting.
Simon Cross <hodgestar@gmail.com>
parents:
diff
changeset
|
34 events = pygame.event.get() |
249814efa91b
Create game engine. Enable quitting.
Simon Cross <hodgestar@gmail.com>
parents:
diff
changeset
|
35 for ev in events: |
249814efa91b
Create game engine. Enable quitting.
Simon Cross <hodgestar@gmail.com>
parents:
diff
changeset
|
36 if ev.type is QUIT: |
249814efa91b
Create game engine. Enable quitting.
Simon Cross <hodgestar@gmail.com>
parents:
diff
changeset
|
37 return |
14 | 38 if ChangeScene.matches(ev): |
249 | 39 next_scene = ev.next_scene |
40 if not isinstance(next_scene, Scene): | |
41 next_scene = next_scene[0](self.game_state, *(next_scene[1:])) | |
42 self.change_scene(next_scene) | |
14 | 43 break |
44 self._current_scene.dispatch(ev) | |
123 | 45 self._current_scene.draw(surface, self) |
14 | 46 pygame.display.flip() |
126
9cae256b91d7
Fix bug in FPS calculation. Phew -- we're still fast.
Simon Cross <hodgestar@gmail.com>
parents:
123
diff
changeset
|
47 self._fpss[self._cur_frame] = 1000.0 / clock.tick(self._framerate) |
123 | 48 self._cur_frame = self._cur_frame + 1 if self._cur_frame < 99 else 0 |
49 | |
50 def get_fps(self): | |
51 return sum(self._fpss) / 100 | |
14 | 52 |
53 | |
54 class Scene(object): | |
55 | |
262 | 56 def __init__(self, game_state, soundsystem): |
79
fe8652a060df
Simple menu screen and TextChoice widget
Stefano Rivera <stefano@rivera.za.net>
parents:
14
diff
changeset
|
57 self.widgets = [] |
165
8d45715c587d
Rename ._game_state to game_state for consistency with engine and since everyone and their dog has access to it. :)
Simon Cross <hodgestar@gmail.com>
parents:
133
diff
changeset
|
58 self.game_state = game_state |
262 | 59 self._soundsystem = soundsystem |
14 | 60 |
61 def post(self, ev): | |
62 """Post an event to pygame's event loop.""" | |
63 pygame.event.post(ev) | |
64 | |
65 def enter(self): | |
66 """Enter the scene.""" | |
67 pass | |
68 | |
69 def leave(self): | |
70 """Exit the scene.""" | |
71 pass | |
72 | |
73 def dispatch(self, ev): | |
74 """Dispatch an event.""" | |
79
fe8652a060df
Simple menu screen and TextChoice widget
Stefano Rivera <stefano@rivera.za.net>
parents:
14
diff
changeset
|
75 for widget in self.widgets: |
fe8652a060df
Simple menu screen and TextChoice widget
Stefano Rivera <stefano@rivera.za.net>
parents:
14
diff
changeset
|
76 widget.dispatch(ev) |
14 | 77 |
133
aca8b7456c72
Pass engine to all Scene draw() methods
Stefano Rivera <stefano@rivera.za.net>
parents:
127
diff
changeset
|
78 def draw(self, surface, engine): |
14 | 79 """Update the scene surface.""" |
79
fe8652a060df
Simple menu screen and TextChoice widget
Stefano Rivera <stefano@rivera.za.net>
parents:
14
diff
changeset
|
80 for widget in self.widgets: |
fe8652a060df
Simple menu screen and TextChoice widget
Stefano Rivera <stefano@rivera.za.net>
parents:
14
diff
changeset
|
81 widget.draw(surface) |
14 | 82 |
83 | |
84 class UserEvent(object): | |
85 | |
86 utype = "UNKNOWN" | |
87 | |
88 @classmethod | |
89 def post(cls, **kws): | |
90 ev = pygame.event.Event(USEREVENT, utype=cls.utype, **kws) | |
91 pygame.event.post(ev) | |
92 | |
93 @classmethod | |
94 def matches(cls, ev): | |
95 return ev.type is USEREVENT and ev.utype == cls.utype | |
96 | |
97 class ChangeScene(UserEvent): | |
98 | |
99 utype = "CHANGE_SCENE" | |
100 | |
101 @classmethod | |
102 def post(cls, next_scene): | |
103 super(ChangeScene, cls).post(next_scene=next_scene) | |
244
5bbf90e6a94b
Add minimal support for player death
Neil Muller <drnlmuller@gmail.com>
parents:
189
diff
changeset
|
104 |
5bbf90e6a94b
Add minimal support for player death
Neil Muller <drnlmuller@gmail.com>
parents:
189
diff
changeset
|
105 class PlayerDied(UserEvent): |
5bbf90e6a94b
Add minimal support for player death
Neil Muller <drnlmuller@gmail.com>
parents:
189
diff
changeset
|
106 |
5bbf90e6a94b
Add minimal support for player death
Neil Muller <drnlmuller@gmail.com>
parents:
189
diff
changeset
|
107 utype = "PLAYER_DIED" |
5bbf90e6a94b
Add minimal support for player death
Neil Muller <drnlmuller@gmail.com>
parents:
189
diff
changeset
|
108 |
5bbf90e6a94b
Add minimal support for player death
Neil Muller <drnlmuller@gmail.com>
parents:
189
diff
changeset
|
109 @classmethod |
5bbf90e6a94b
Add minimal support for player death
Neil Muller <drnlmuller@gmail.com>
parents:
189
diff
changeset
|
110 def post(cls): |
5bbf90e6a94b
Add minimal support for player death
Neil Muller <drnlmuller@gmail.com>
parents:
189
diff
changeset
|
111 super(PlayerDied, cls).post() |
250
8d7edd77bfbf
Start hooking up NPC interactions.
Simon Cross <hodgestar@gmail.com>
parents:
249
diff
changeset
|
112 |
8d7edd77bfbf
Start hooking up NPC interactions.
Simon Cross <hodgestar@gmail.com>
parents:
249
diff
changeset
|
113 class OpenDialog(UserEvent): |
8d7edd77bfbf
Start hooking up NPC interactions.
Simon Cross <hodgestar@gmail.com>
parents:
249
diff
changeset
|
114 |
8d7edd77bfbf
Start hooking up NPC interactions.
Simon Cross <hodgestar@gmail.com>
parents:
249
diff
changeset
|
115 utype = "OPEN_DIALOG" |
8d7edd77bfbf
Start hooking up NPC interactions.
Simon Cross <hodgestar@gmail.com>
parents:
249
diff
changeset
|
116 |
8d7edd77bfbf
Start hooking up NPC interactions.
Simon Cross <hodgestar@gmail.com>
parents:
249
diff
changeset
|
117 @classmethod |
8d7edd77bfbf
Start hooking up NPC interactions.
Simon Cross <hodgestar@gmail.com>
parents:
249
diff
changeset
|
118 def post(cls, npc): |
8d7edd77bfbf
Start hooking up NPC interactions.
Simon Cross <hodgestar@gmail.com>
parents:
249
diff
changeset
|
119 # request to open dialog box for given NPC sprite |
8d7edd77bfbf
Start hooking up NPC interactions.
Simon Cross <hodgestar@gmail.com>
parents:
249
diff
changeset
|
120 # will do nothing if the NPC's current state has |
8d7edd77bfbf
Start hooking up NPC interactions.
Simon Cross <hodgestar@gmail.com>
parents:
249
diff
changeset
|
121 # no text |
8d7edd77bfbf
Start hooking up NPC interactions.
Simon Cross <hodgestar@gmail.com>
parents:
249
diff
changeset
|
122 super(OpenDialog, cls).post(npc=npc) |
8d7edd77bfbf
Start hooking up NPC interactions.
Simon Cross <hodgestar@gmail.com>
parents:
249
diff
changeset
|
123 |
8d7edd77bfbf
Start hooking up NPC interactions.
Simon Cross <hodgestar@gmail.com>
parents:
249
diff
changeset
|
124 class CloseDialog(UserEvent): |
8d7edd77bfbf
Start hooking up NPC interactions.
Simon Cross <hodgestar@gmail.com>
parents:
249
diff
changeset
|
125 |
8d7edd77bfbf
Start hooking up NPC interactions.
Simon Cross <hodgestar@gmail.com>
parents:
249
diff
changeset
|
126 utype = "CLOSE_DIALOG" |
8d7edd77bfbf
Start hooking up NPC interactions.
Simon Cross <hodgestar@gmail.com>
parents:
249
diff
changeset
|
127 |
8d7edd77bfbf
Start hooking up NPC interactions.
Simon Cross <hodgestar@gmail.com>
parents:
249
diff
changeset
|
128 @classmethod |
8d7edd77bfbf
Start hooking up NPC interactions.
Simon Cross <hodgestar@gmail.com>
parents:
249
diff
changeset
|
129 def post(cls, npc): |
8d7edd77bfbf
Start hooking up NPC interactions.
Simon Cross <hodgestar@gmail.com>
parents:
249
diff
changeset
|
130 # close dialog box for given NPC sprite |
8d7edd77bfbf
Start hooking up NPC interactions.
Simon Cross <hodgestar@gmail.com>
parents:
249
diff
changeset
|
131 # will do nothing if the sprite has no dialog open |
8d7edd77bfbf
Start hooking up NPC interactions.
Simon Cross <hodgestar@gmail.com>
parents:
249
diff
changeset
|
132 super(CloseDialog, cls).post(npc=npc) |
8d7edd77bfbf
Start hooking up NPC interactions.
Simon Cross <hodgestar@gmail.com>
parents:
249
diff
changeset
|
133 |
8d7edd77bfbf
Start hooking up NPC interactions.
Simon Cross <hodgestar@gmail.com>
parents:
249
diff
changeset
|
134 class NpcEvent(UserEvent): # TODO: Needed? |
8d7edd77bfbf
Start hooking up NPC interactions.
Simon Cross <hodgestar@gmail.com>
parents:
249
diff
changeset
|
135 |
8d7edd77bfbf
Start hooking up NPC interactions.
Simon Cross <hodgestar@gmail.com>
parents:
249
diff
changeset
|
136 utype = "NPC_EVENT" |
8d7edd77bfbf
Start hooking up NPC interactions.
Simon Cross <hodgestar@gmail.com>
parents:
249
diff
changeset
|
137 |
8d7edd77bfbf
Start hooking up NPC interactions.
Simon Cross <hodgestar@gmail.com>
parents:
249
diff
changeset
|
138 @classmethod |
8d7edd77bfbf
Start hooking up NPC interactions.
Simon Cross <hodgestar@gmail.com>
parents:
249
diff
changeset
|
139 def post(cls, npc, ev): |
8d7edd77bfbf
Start hooking up NPC interactions.
Simon Cross <hodgestar@gmail.com>
parents:
249
diff
changeset
|
140 """npc is an NPC sprite. |
8d7edd77bfbf
Start hooking up NPC interactions.
Simon Cross <hodgestar@gmail.com>
parents:
249
diff
changeset
|
141 ev is a DsmEvent for that sprite. |
8d7edd77bfbf
Start hooking up NPC interactions.
Simon Cross <hodgestar@gmail.com>
parents:
249
diff
changeset
|
142 """ |
8d7edd77bfbf
Start hooking up NPC interactions.
Simon Cross <hodgestar@gmail.com>
parents:
249
diff
changeset
|
143 super(NpcEvent, cls).post(npc=npc, ev=ev) |
8d7edd77bfbf
Start hooking up NPC interactions.
Simon Cross <hodgestar@gmail.com>
parents:
249
diff
changeset
|
144 |
8d7edd77bfbf
Start hooking up NPC interactions.
Simon Cross <hodgestar@gmail.com>
parents:
249
diff
changeset
|
145 class GlobalNpcEvent(UserEvent): # TODO: Needed? |
8d7edd77bfbf
Start hooking up NPC interactions.
Simon Cross <hodgestar@gmail.com>
parents:
249
diff
changeset
|
146 |
8d7edd77bfbf
Start hooking up NPC interactions.
Simon Cross <hodgestar@gmail.com>
parents:
249
diff
changeset
|
147 utype = "GLOBAL_NPC_EVENT" |
8d7edd77bfbf
Start hooking up NPC interactions.
Simon Cross <hodgestar@gmail.com>
parents:
249
diff
changeset
|
148 |
8d7edd77bfbf
Start hooking up NPC interactions.
Simon Cross <hodgestar@gmail.com>
parents:
249
diff
changeset
|
149 @classmethod |
8d7edd77bfbf
Start hooking up NPC interactions.
Simon Cross <hodgestar@gmail.com>
parents:
249
diff
changeset
|
150 def post(cls, ev): |
8d7edd77bfbf
Start hooking up NPC interactions.
Simon Cross <hodgestar@gmail.com>
parents:
249
diff
changeset
|
151 """Send a DsmEvent event to all NPCs. |
8d7edd77bfbf
Start hooking up NPC interactions.
Simon Cross <hodgestar@gmail.com>
parents:
249
diff
changeset
|
152 """ |
8d7edd77bfbf
Start hooking up NPC interactions.
Simon Cross <hodgestar@gmail.com>
parents:
249
diff
changeset
|
153 super(GlobalNpcEvent, cls).post(ev=ev) |