Mercurial > parpg-source
annotate bGrease/impl/controls.py @ 65:e856b604b650
Changed "import bGrease" to "import parpg.bGrease".
| author | KarstenBock@gmx.net |
|---|---|
| date | Wed, 21 Sep 2011 16:10:14 +0200 |
| parents | ff3e395abf91 |
| children | a6bbb732b27b |
| rev | line source |
|---|---|
| 5 | 1 ############################################################################# |
| 2 # | |
| 3 # Copyright (c) 2010 by Casey Duncan | |
| 4 # All Rights Reserved. | |
| 5 # | |
| 6 # This software is subject to the provisions of the MIT License | |
| 7 # A copy of the license should accompany this distribution. | |
| 8 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
| 9 # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
| 10 # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. | |
| 11 # | |
| 12 ############################################################################# | |
| 13 """Control systems for binding controls to game logic""" | |
| 14 | |
|
41
ff3e395abf91
Renamed grease to bGrease (Basic Grease) to get rid of conflicts with an already installed grease.
KarstenBock@gmx.net
parents:
5
diff
changeset
|
15 import bGrease |
| 5 | 16 from pyglet.window import key |
| 17 | |
| 18 class KeyControls(grease.System): | |
| 19 """System that maps subclass-defined action methods to keys. | |
| 20 | |
| 21 Keys may be mapped in the subclass definition using decorators | |
| 22 defined here as class methods or at runtime using the ``bind_key_*`` | |
| 23 instance methods. | |
| 24 | |
| 25 See :ref:`an example implementation in the tutorial <tut-controls-example>`. | |
| 26 """ | |
| 27 MODIFIER_MASK = ~(key.MOD_NUMLOCK | key.MOD_SCROLLLOCK | key.MOD_CAPSLOCK) | |
| 28 """The MODIFIER_MASK allows you to filter out modifier keys that should be | |
| 29 ignored by the application. By default, capslock, numlock, and scrolllock | |
| 30 are ignored. | |
| 31 """ | |
| 32 | |
| 33 world = None | |
| 34 """:class:`grease.World` object this system is bound to""" | |
| 35 | |
| 36 def __init__(self): | |
| 37 self._key_press_map = {} | |
| 38 self._key_release_map = {} | |
| 39 self._key_hold_map = {} | |
| 40 for name in self.__class__.__dict__: | |
| 41 member = getattr(self, name) | |
| 42 if hasattr(member, '_grease_hold_key_binding'): | |
| 43 for binding in member._grease_hold_key_binding: | |
| 44 self.bind_key_hold(member, *binding) | |
| 45 if hasattr(member, '_grease_press_key_binding'): | |
| 46 for binding in member._grease_press_key_binding: | |
| 47 self.bind_key_press(member, *binding) | |
| 48 if hasattr(member, '_grease_release_key_binding'): | |
| 49 for binding in member._grease_release_key_binding: | |
| 50 self.bind_key_release(member, *binding) | |
| 51 self.held_keys = set() | |
| 52 | |
| 53 ## decorator methods for binding methods to key input events ## | |
| 54 | |
| 55 @classmethod | |
| 56 def key_hold(cls, symbol, modifiers=0): | |
| 57 """Decorator to bind a method to be executed where a key is held down""" | |
| 58 def bind(f): | |
| 59 if not hasattr(f, '_grease_hold_key_binding'): | |
| 60 f._grease_hold_key_binding = [] | |
| 61 f._grease_hold_key_binding.append((symbol, modifiers & cls.MODIFIER_MASK)) | |
| 62 return f | |
| 63 return bind | |
| 64 | |
| 65 @classmethod | |
| 66 def key_press(cls, symbol, modifiers=0): | |
| 67 """Decorator to bind a method to be executed where a key is initially depressed""" | |
| 68 def bind(f): | |
| 69 if not hasattr(f, '_grease_press_key_binding'): | |
| 70 f._grease_press_key_binding = [] | |
| 71 f._grease_press_key_binding.append((symbol, modifiers & cls.MODIFIER_MASK)) | |
| 72 return f | |
| 73 return bind | |
| 74 | |
| 75 @classmethod | |
| 76 def key_release(cls, symbol, modifiers=0): | |
| 77 """Decorator to bind a method to be executed where a key is released""" | |
| 78 def bind(f): | |
| 79 if not hasattr(f, '_grease_release_key_binding'): | |
| 80 f._grease_release_key_binding = [] | |
| 81 f._grease_release_key_binding.append((symbol, modifiers & cls.MODIFIER_MASK)) | |
| 82 return f | |
| 83 return bind | |
| 84 | |
| 85 ## runtime binding methods ## | |
| 86 | |
| 87 def bind_key_hold(self, method, key, modifiers=0): | |
| 88 """Bind a method to a key at runtime to be invoked when the key is | |
| 89 held down, this replaces any existing key hold binding for this key. | |
| 90 To unbind the key entirely, pass ``None`` for method. | |
| 91 """ | |
| 92 if method is not None: | |
| 93 self._key_hold_map[key, modifiers & self.MODIFIER_MASK] = method | |
| 94 else: | |
| 95 try: | |
| 96 del self._key_hold_map[key, modifiers & self.MODIFIER_MASK] | |
| 97 except KeyError: | |
| 98 pass | |
| 99 | |
| 100 def bind_key_press(self, method, key, modifiers=0): | |
| 101 """Bind a method to a key at runtime to be invoked when the key is initially | |
| 102 pressed, this replaces any existing key hold binding for this key. To unbind | |
| 103 the key entirely, pass ``None`` for method. | |
| 104 """ | |
| 105 if method is not None: | |
| 106 self._key_press_map[key, modifiers & self.MODIFIER_MASK] = method | |
| 107 else: | |
| 108 try: | |
| 109 del self._key_press_map[key, modifiers & self.MODIFIER_MASK] | |
| 110 except KeyError: | |
| 111 pass | |
| 112 | |
| 113 def bind_key_release(self, method, key, modifiers=0): | |
| 114 """Bind a method to a key at runtime to be invoked when the key is releaseed, | |
| 115 this replaces any existing key hold binding for this key. To unbind | |
| 116 the key entirely, pass ``None`` for method. | |
| 117 """ | |
| 118 if method is not None: | |
| 119 self._key_release_map[key, modifiers & self.MODIFIER_MASK] = method | |
| 120 else: | |
| 121 try: | |
| 122 del self._key_release_map[key, modifiers & self.MODIFIER_MASK] | |
| 123 except KeyError: | |
| 124 pass | |
| 125 | |
| 126 def step(self, dt): | |
| 127 """invoke held key functions""" | |
| 128 already_run = set() | |
| 129 for key in self.held_keys: | |
| 130 func = self._key_hold_map.get(key) | |
| 131 if func is not None and func not in already_run: | |
| 132 already_run.add(func) | |
| 133 func(dt) | |
| 134 | |
| 135 def on_key_press(self, key, modifiers): | |
| 136 """Handle pyglet key press. Invoke key press methods and | |
| 137 activate key hold functions | |
| 138 """ | |
| 139 key_mod = (key, modifiers & self.MODIFIER_MASK) | |
| 140 if key_mod in self._key_press_map: | |
| 141 self._key_press_map[key_mod]() | |
| 142 self.held_keys.add(key_mod) | |
| 143 | |
| 144 def on_key_release(self, key, modifiers): | |
| 145 """Handle pyglet key release. Invoke key release methods and | |
| 146 deactivate key hold functions | |
| 147 """ | |
| 148 key_mod = (key, modifiers & self.MODIFIER_MASK) | |
| 149 if key_mod in self._key_release_map: | |
| 150 self._key_release_map[key_mod]() | |
| 151 self.held_keys.discard(key_mod) | |
| 152 | |
| 153 | |
| 154 if __name__ == '__main__': | |
| 155 import pyglet | |
| 156 | |
| 157 class TestKeyControls(KeyControls): | |
| 158 | |
| 159 MODIFIER_MASK = ~(key.MOD_NUMLOCK | key.MOD_SCROLLLOCK | key.MOD_CTRL) | |
| 160 | |
| 161 remapped = False | |
| 162 | |
| 163 @KeyControls.key_hold(key.UP) | |
| 164 @KeyControls.key_hold(key.W) | |
| 165 def up(self, dt): | |
| 166 print 'UP!' | |
| 167 | |
| 168 @KeyControls.key_hold(key.LEFT) | |
| 169 @KeyControls.key_hold(key.A) | |
| 170 def left(self, dt): | |
| 171 print 'LEFT!' | |
| 172 | |
| 173 @KeyControls.key_hold(key.RIGHT) | |
| 174 @KeyControls.key_hold(key.D) | |
| 175 def right(self, dt): | |
| 176 print 'RIGHT!' | |
| 177 | |
| 178 @KeyControls.key_hold(key.DOWN) | |
| 179 @KeyControls.key_hold(key.S) | |
| 180 def down(self, dt): | |
| 181 print 'DOWN!' | |
| 182 | |
| 183 @KeyControls.key_press(key.SPACE) | |
| 184 def fire(self): | |
| 185 print 'FIRE!' | |
| 186 | |
| 187 @KeyControls.key_press(key.R) | |
| 188 def remap_keys(self): | |
| 189 if not self.remapped: | |
| 190 self.bind_key_hold(None, key.W) | |
| 191 self.bind_key_hold(None, key.A) | |
| 192 self.bind_key_hold(None, key.S) | |
| 193 self.bind_key_hold(None, key.D) | |
| 194 self.bind_key_hold(self.up, key.I) | |
| 195 self.bind_key_hold(self.left, key.J) | |
| 196 self.bind_key_hold(self.right, key.L) | |
| 197 self.bind_key_hold(self.down, key.K) | |
| 198 else: | |
| 199 self.bind_key_hold(None, key.I) | |
| 200 self.bind_key_hold(None, key.J) | |
| 201 self.bind_key_hold(None, key.K) | |
| 202 self.bind_key_hold(None, key.L) | |
| 203 self.bind_key_hold(self.up, key.W) | |
| 204 self.bind_key_hold(self.left, key.A) | |
| 205 self.bind_key_hold(self.right, key.D) | |
| 206 self.bind_key_hold(self.down, key.S) | |
| 207 self.remapped = not self.remapped | |
| 208 | |
| 209 | |
| 210 window = pyglet.window.Window() | |
| 211 window.clear() | |
| 212 controls = TestKeyControls() | |
| 213 window.push_handlers(controls) | |
| 214 pyglet.clock.schedule_interval(controls.step, 0.5) | |
| 215 pyglet.app.run() | |
| 216 |