Mercurial > pyntnclick
annotate gamelib/state.py @ 191:278774b31d3c
CloneableItems.
author | Jeremy Thurgood <firxen@gmail.com> |
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date | Wed, 25 Aug 2010 21:32:38 +0200 |
parents | fbfd8e748ac0 |
children | 738608e90e9c |
rev | line source |
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1 """Utilities and base classes for dealing with scenes.""" |
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2 |
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3 from albow.resource import get_image |
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4 from albow.utils import frame_rect |
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5 from widgets import BoomLabel |
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6 from pygame.locals import BLEND_ADD |
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7 from pygame.rect import Rect |
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8 from pygame.surface import Surface |
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9 from pygame.color import Color |
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10 |
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11 import constants |
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12 from sound import get_sound |
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13 from cursor import HAND |
11 | 14 |
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15 # override the initial scene to for debugging |
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16 DEBUG_SCENE = None |
124 | 17 |
78 | 18 class Result(object): |
19 """Result of interacting with a thing""" | |
20 | |
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21 def __init__(self, message=None, soundfile=None, detail_view=None): |
78 | 22 self.message = message |
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23 self.sound = None |
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24 if soundfile: |
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25 self.sound = get_sound(soundfile) |
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26 self.detail_view = detail_view |
78 | 27 |
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28 def process(self, scene_widget): |
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29 """Helper function to do the right thing with a result object""" |
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30 if self.sound: |
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31 self.sound.play() |
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32 if self.message: |
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33 scene_widget.show_message(self.message) |
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34 if self.detail_view: |
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35 scene_widget.show_detail(self.detail_view) |
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36 |
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37 def initial_state(): |
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38 """Load the initial state.""" |
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39 state = State() |
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40 state.load_scenes("cryo") |
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41 state.load_scenes("bridge") |
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42 state.load_scenes("mess") |
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43 state.load_scenes("engine") |
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44 state.load_scenes("machine") |
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45 state.load_scenes("map") |
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46 initial_scene = "cryo" if DEBUG_SCENE is None else DEBUG_SCENE |
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47 state.set_current_scene(initial_scene) |
120 | 48 state.set_do_enter_leave() |
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49 return state |
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50 |
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51 |
7
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52 class State(object): |
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53 """Complete game state. |
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54 |
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55 Game state consists of: |
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56 |
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57 * items |
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58 * scenes |
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59 """ |
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60 |
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61 def __init__(self): |
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62 # map of scene name -> Scene object |
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63 self.scenes = {} |
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64 # map of detail view name -> DetailView object |
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65 self.detail_views = {} |
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66 # map of item name -> Item object |
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67 self.items = {} |
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68 # list of item objects in inventory |
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69 self.inventory = [] |
73 | 70 # currently selected tool (item) |
71 self.tool = None | |
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72 # current scene |
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73 self.current_scene = None |
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74 # current detail view |
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75 self.current_detail = None |
120 | 76 # scene we came from, for enter and leave processing |
77 self.previous_scene = None | |
78 # scene transion helpers | |
79 self.do_check = None | |
80 self.old_pos = None | |
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81 |
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82 def add_scene(self, scene): |
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83 self.scenes[scene.name] = scene |
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84 |
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85 def add_detail_view(self, detail_view): |
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86 self.detail_views[detail_view.name] = detail_view |
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87 |
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88 def add_item(self, item): |
35 | 89 self.items[item.name] = item |
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90 |
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91 def load_scenes(self, modname): |
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92 mod = __import__("gamelib.scenes.%s" % (modname,), fromlist=[modname]) |
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93 for scene_cls in mod.SCENES: |
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94 self.add_scene(scene_cls(self)) |
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95 if hasattr(mod, 'DETAIL_VIEWS'): |
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96 for scene_cls in mod.DETAIL_VIEWS: |
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97 self.add_detail_view(scene_cls(self)) |
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98 |
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99 def set_current_scene(self, name): |
120 | 100 old_scene = self.current_scene |
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101 self.current_scene = self.scenes[name] |
120 | 102 if old_scene and old_scene != self.current_scene: |
103 self.previous_scene = old_scene | |
104 self.set_do_enter_leave() | |
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105 |
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106 def set_current_detail(self, name): |
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107 if name is None: |
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108 self.current_detail = None |
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109 else: |
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110 self.current_detail = self.detail_views[name] |
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111 self.current_scene._current_description = None |
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112 self.current_scene._current_thing = None |
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113 return self.current_detail.get_detail_size() |
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114 |
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115 def add_inventory_item(self, name): |
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116 self.inventory.append(self.items[name]) |
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117 |
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118 def remove_inventory_item(self, name): |
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119 self.inventory.remove(self.items[name]) |
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120 # Unselect tool if it's removed |
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121 if self.tool == self.items[name]: |
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122 self.set_tool(None) |
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123 |
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124 def replace_inventory_item(self, old_item, new_item): |
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125 """Try to replace an item in the inventory with a new one""" |
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126 try: |
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127 index = self.inventory.index(old_item) |
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128 self.inventory[index] = new_item |
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129 if self.tool == old_item: |
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130 self.set_tool(new_item) |
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131 except ValueError: |
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132 return False |
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133 return True |
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134 |
73 | 135 def set_tool(self, item): |
136 self.tool = item | |
137 | |
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138 def draw(self, surface, screen): |
120 | 139 if self.do_check and self.previous_scene and self.do_check == constants.LEAVE: |
140 # We still need to handle leave events, so still display the scene | |
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141 self.previous_scene.draw(surface, screen) |
120 | 142 else: |
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143 self.current_scene.draw(surface, screen) |
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144 |
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145 def draw_detail(self, surface, screen): |
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146 self.current_detail.draw(surface, screen) |
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147 |
73 | 148 def interact(self, pos): |
78 | 149 return self.current_scene.interact(self.tool, pos) |
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150 |
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151 def interact_detail(self, pos): |
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152 return self.current_detail.interact(self.tool, pos) |
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153 |
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154 def animate(self): |
120 | 155 if not self.do_check: |
156 return self.current_scene.animate() | |
157 | |
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158 def check_enter_leave(self, screen): |
120 | 159 if not self.do_check: |
160 return None | |
161 if self.do_check == constants.LEAVE: | |
162 self.do_check = constants.ENTER | |
163 if self.previous_scene: | |
164 return self.previous_scene.leave() | |
165 return None | |
166 elif self.do_check == constants.ENTER: | |
167 self.do_check = None | |
168 # Fix descriptions, etc. | |
169 if self.old_pos: | |
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170 self.current_scene.mouse_move(self.tool, self.old_pos, screen) |
120 | 171 return self.current_scene.enter() |
172 raise RuntimeError('invalid do_check value %s' % self.do_check) | |
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173 |
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174 def mouse_move(self, pos, screen): |
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175 self.current_scene.mouse_move(self.tool, pos, screen) |
120 | 176 # So we can do sensible things on enter and leave |
177 self.old_pos = pos | |
178 | |
179 def set_do_enter_leave(self): | |
180 """Flag that we need to run the enter loop""" | |
181 self.do_check = constants.LEAVE | |
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182 |
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183 def mouse_move_detail(self, pos, screen): |
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184 self.current_detail.mouse_move(self.tool, pos, screen) |
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185 |
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186 |
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187 class StatefulGizmo(object): |
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188 |
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189 # initial data (optional, defaults to none) |
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190 INITIAL_DATA = None |
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191 |
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192 def __init__(self): |
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193 self.data = {} |
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194 if self.INITIAL_DATA: |
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195 self.data.update(self.INITIAL_DATA) |
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196 |
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197 def set_data(self, key, value): |
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198 self.data[key] = value |
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199 |
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200 def get_data(self, key): |
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201 return self.data.get(key, None) |
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202 |
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203 |
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204 class Scene(StatefulGizmo): |
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205 """Base class for scenes.""" |
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206 |
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207 # sub-folder to look for resources in |
22 | 208 FOLDER = None |
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209 |
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210 # name of background image resource |
22 | 211 BACKGROUND = None |
212 | |
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213 # name of scene (optional, defaults to folder) |
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214 NAME = None |
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215 |
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216 # size (for detail views) |
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217 SIZE = constants.SCENE_SIZE |
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218 |
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219 def __init__(self, state): |
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220 StatefulGizmo.__init__(self) |
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221 # scene name |
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222 self.name = self.NAME if self.NAME is not None else self.FOLDER |
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223 # link back to state object |
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224 self.state = state |
22 | 225 # map of thing names -> Thing objects |
226 self.things = {} | |
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227 if self.BACKGROUND is not None: |
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228 self._background = get_image(self.FOLDER, self.BACKGROUND) |
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229 else: |
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230 self._background = None |
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231 self._current_thing = None |
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232 self._current_description = None |
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233 |
35 | 234 def add_item(self, item): |
235 self.state.add_item(item) | |
236 | |
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237 def add_thing(self, thing): |
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238 self.things[thing.name] = thing |
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239 thing.set_scene(self) |
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240 |
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241 def remove_thing(self, thing): |
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242 del self.things[thing.name] |
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243 |
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244 def _make_description(self, text): |
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245 if text is None: |
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246 return None |
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247 label = BoomLabel(text) |
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248 label.set_margin(5) |
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249 label.border_width = 1 |
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250 label.border_color = (0, 0, 0) |
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251 label.bg_color = (127, 127, 127) |
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252 label.fg_color = (0, 0, 0) |
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253 return label |
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254 |
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255 def draw_description(self, surface, screen): |
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256 if self._current_description is not None: |
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257 sub = screen.get_root().surface.subsurface( |
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258 Rect(5, 5, *self._current_description.size)) |
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259 self._current_description.draw_all(sub) |
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260 |
22 | 261 def draw_background(self, surface): |
130
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262 if self._background is not None: |
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263 surface.blit(self._background, (0, 0), None) |
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264 else: |
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265 surface.fill((200, 200, 200)) |
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266 |
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267 def draw_things(self, surface): |
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268 for thing in self.things.itervalues(): |
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269 thing.draw(surface) |
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270 |
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271 def draw(self, surface, screen): |
22 | 272 self.draw_background(surface) |
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273 self.draw_things(surface) |
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274 self.draw_description(surface, screen) |
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275 |
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276 def interact(self, item, pos): |
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277 """Interact with a particular position. |
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278 |
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279 Item may be an item in the list of items or None for the hand. |
78 | 280 |
281 Returns a Result object to provide feedback to the player. | |
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282 """ |
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283 for thing in self.things.itervalues(): |
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284 if thing.contains(pos): |
78 | 285 result = thing.interact(item) |
286 if result: | |
287 if self._current_thing: | |
288 # Also update descriptions if needed | |
289 self._current_description = self._make_description( | |
290 self._current_thing.get_description()) | |
291 return result | |
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292 |
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293 def animate(self): |
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294 """Animate all the things in the scene. |
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295 |
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296 Return true if any of them need to queue a redraw""" |
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297 result = False |
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298 for thing in self.things.itervalues(): |
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299 if thing.animate(): |
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300 result = True |
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301 return result |
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302 |
120 | 303 def enter(self): |
304 return None | |
305 | |
306 def leave(self): | |
307 self._current_description = None | |
308 return None | |
309 | |
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310 def mouse_move(self, item, pos, screen): |
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311 """Call to check whether the cursor has entered / exited a thing. |
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312 |
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313 Item may be an item in the list of items or None for the hand. |
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314 """ |
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315 if self._current_thing is not None: |
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316 if self._current_thing.contains(pos): |
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317 screen.cursor_highlight(True) |
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318 return |
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319 else: |
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320 self._current_thing.leave() |
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321 self._current_thing = None |
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322 self._current_description = None |
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323 for thing in self.things.itervalues(): |
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324 if thing.contains(pos): |
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325 thing.enter(item) |
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326 self._current_thing = thing |
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327 self._current_description = self._make_description( |
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328 thing.get_description()) |
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329 break |
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330 screen.cursor_highlight(self._current_thing is not None) |
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331 |
125
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332 def get_detail_size(self): |
127
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333 return self._background.get_size() |
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334 |
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335 |
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336 class Interact(object): |
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337 |
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338 def __init__(self, image, rect, interact_rect): |
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339 self.image = image |
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340 self.rect = rect |
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341 self.interact_rect = interact_rect |
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342 |
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343 def set_thing(self, thing): |
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344 pass |
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345 |
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346 def draw(self, surface): |
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347 if self.image is not None: |
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348 surface.blit(self.image, self.rect, None) |
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349 |
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350 def animate(self): |
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351 return False |
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352 |
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353 |
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354 class InteractNoImage(Interact): |
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355 |
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356 def __init__(self, x, y, w, h): |
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357 super(InteractNoImage, self).__init__(None, None, Rect(x, y, w, h)) |
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358 |
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359 |
130
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360 class InteractText(Interact): |
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361 """Display box with text to interact with -- mostly for debugging.""" |
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362 |
132
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363 def __init__(self, x, y, text, bg_color=None): |
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364 if bg_color is None: |
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365 bg_color = (127, 127, 127) |
130
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366 label = BoomLabel(text) |
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367 label.set_margin(5) |
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368 label.border_width = 1 |
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369 label.border_color = (0, 0, 0) |
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370 label.bg_color = bg_color |
130
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371 label.fg_color = (0, 0, 0) |
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372 image = Surface(label.size) |
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373 rect = Rect((x, y), label.size) |
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374 label.draw_all(image) |
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375 super(InteractText, self).__init__(image, rect, rect) |
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376 |
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377 |
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378 class InteractRectUnion(Interact): |
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379 |
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380 def __init__(self, rect_list): |
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381 # pygame.rect.Rect.unionall should do this, but is broken |
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382 # in some pygame versions (including 1.8, it appears) |
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383 rect_list = [Rect(x) for x in rect_list] |
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384 union_rect = rect_list[0] |
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385 for rect in rect_list[1:]: |
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386 union_rect = union_rect.union(rect) |
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387 super(InteractRectUnion, self).__init__(None, None, union_rect) |
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388 self.interact_rect = rect_list |
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389 |
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390 |
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391 class InteractImage(Interact): |
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392 |
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393 def __init__(self, x, y, image_name): |
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394 super(InteractImage, self).__init__(None, None, None) |
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395 self._pos = (x, y) |
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396 self._image_name = image_name |
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397 |
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398 def set_thing(self, thing): |
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399 self.image = get_image(thing.folder, self._image_name) |
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400 self.rect = Rect(self._pos, self.image.get_size()) |
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401 self.interact_rect = self.rect |
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402 |
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403 |
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404 class InteractAnimated(Interact): |
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405 """Interactive with an animation rather than an image""" |
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406 |
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407 # FIXME: Assumes all images are the same size |
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408 # anim_seq - sequence of image names |
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409 # delay - number of frames to wait between changing images |
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410 |
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411 def __init__(self, x, y, anim_seq, delay): |
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412 self._pos = (x, y) |
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413 self._anim_pos = 0 |
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414 self._names = anim_seq |
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415 self._frame_count = 0 |
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416 self._anim_seq = None |
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417 self._delay = delay |
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418 |
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419 def set_thing(self, thing): |
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420 self._anim_seq = [get_image(thing.folder, x) for x in self._names] |
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421 self.image = self._anim_seq[0] |
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422 self.rect = Rect(self._pos, self.image.get_size()) |
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423 self.interact_rect = self.rect |
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424 |
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425 def animate(self): |
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426 if self._anim_seq: |
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427 self._frame_count += 1 |
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428 if self._frame_count > self._delay: |
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429 self._frame_count = 0 |
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430 self._anim_pos += 1 |
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431 if self._anim_pos >= len(self._anim_seq): |
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432 self._anim_pos = 0 |
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433 self.image = self._anim_seq[self._anim_pos] |
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434 # queue redraw |
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435 return True |
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|
436 return False |
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|
437 |
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|
438 |
55
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439 class Thing(StatefulGizmo): |
22 | 440 """Base class for things in a scene that you can interact with.""" |
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441 |
86
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442 # name of thing |
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443 NAME = None |
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444 |
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445 # sub-folder to look for resources in (defaults to scenes folder) |
41
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446 FOLDER = None |
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447 |
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448 # list of Interact objects |
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449 INTERACTS = {} |
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450 |
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451 # name first interact |
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452 INITIAL = None |
41
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453 |
68
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454 # Interact rectangle hi-light color (for debugging) |
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455 # (set to None to turn off) |
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456 if constants.DEBUG: |
75 | 457 _interact_hilight_color = Color('red') |
68
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458 else: |
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459 _interact_hilight_color = None |
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460 |
86
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461 def __init__(self): |
55
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462 StatefulGizmo.__init__(self) |
86
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463 # name of the thing |
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464 self.name = self.NAME |
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465 # folder for resource (None is overridden by scene folder) |
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466 self.folder = self.FOLDER |
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467 # interacts |
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468 self.interacts = self.INTERACTS |
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469 # these are set by set_scene |
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470 self.scene = None |
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471 self.state = None |
86
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472 self.current_interact = None |
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473 self.rect = None |
32
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474 # TODO: add masks |
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475 |
39
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476 def set_scene(self, scene): |
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477 assert self.scene is None |
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478 self.scene = scene |
86
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479 if self.folder is None: |
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480 self.folder = scene.FOLDER |
39
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481 self.state = scene.state |
86
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482 for interact in self.interacts.itervalues(): |
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483 interact.set_thing(self) |
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484 self.set_interact(self.INITIAL) |
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|
485 |
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486 def set_interact(self, name): |
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487 self.current_interact = self.interacts[name] |
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488 self.rect = self.current_interact.interact_rect |
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489 assert self.rect is not None, name |
39
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|
490 |
94
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|
491 def contains(self, pos): |
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492 if hasattr(self.rect, 'collidepoint'): |
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493 return self.rect.collidepoint(pos) |
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|
494 else: |
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|
495 # FIXME: add sanity check |
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496 for rect in list(self.rect): |
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|
497 if rect.collidepoint(pos): |
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498 return True |
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|
499 return False |
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|
500 |
63
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diff
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|
501 def get_description(self): |
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|
502 return None |
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diff
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|
503 |
56
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|
504 def is_interactive(self): |
133
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505 return self.current_interact is not None |
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|
506 |
71
99c5506de7ea
Start of interact handling.
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|
507 def enter(self, item): |
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|
508 """Called when the cursor enters the Thing.""" |
139
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|
509 pass |
71
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|
510 |
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|
511 def leave(self): |
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|
512 """Called when the cursr leaves the Thing.""" |
139
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|
513 pass |
71
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|
514 |
22 | 515 def interact(self, item): |
56
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|
516 if not self.is_interactive(): |
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|
517 return |
41
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518 if item is None: |
78 | 519 return self.interact_without() |
41
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|
520 else: |
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|
521 handler = getattr(self, 'interact_with_' + item.name, None) |
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|
522 if handler is not None: |
78 | 523 return handler(item) |
41
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524 else: |
78 | 525 return self.interact_default(item) |
41
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changeset
|
526 |
105
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|
527 def animate(self): |
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528 return self.current_interact.animate() |
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|
529 |
41
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diff
changeset
|
530 def interact_without(self): |
78 | 531 return self.interact_default(None) |
41
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diff
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|
532 |
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|
533 def interact_default(self, item): |
78 | 534 return Result("It doesn't work.") |
22 | 535 |
23
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diff
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|
536 def draw(self, surface): |
86
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|
537 self.current_interact.draw(surface) |
68
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|
538 if self._interact_hilight_color is not None: |
94
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|
539 if hasattr(self.rect, 'collidepoint'): |
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diff
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|
540 frame_rect(surface, self._interact_hilight_color, |
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|
541 self.rect.inflate(1, 1), 1) |
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|
542 else: |
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|
543 for rect in self.rect: |
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|
544 frame_rect(surface, self._interact_hilight_color, |
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|
545 rect.inflate(1, 1), 1) |
23
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22
diff
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|
546 |
22 | 547 |
548 class Item(object): | |
549 """Base class for inventory items.""" | |
550 | |
35 | 551 # image for inventory |
552 INVENTORY_IMAGE = None | |
32
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diff
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|
553 |
35 | 554 def __init__(self, name): |
555 self.name = name | |
556 self.inventory_image = get_image('items', self.INVENTORY_IMAGE) | |
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diff
changeset
|
557 # TODO: needs cursor |
22 | 558 |
34
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|
559 def get_inventory_image(self): |
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Inventory and items. And stuff.
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|
560 return self.inventory_image |
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diff
changeset
|
561 |
167
5845a3ed4dad
Inventory interaction can (surprisingly) affect the inventory
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diff
changeset
|
562 def interact(self, tool, state): |
166
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|
563 handler = getattr(self, 'interact_with_' + tool.name, None) |
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diff
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|
564 inverse_handler = getattr(tool, 'interact_with_' + self.name, None) |
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diff
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|
565 if handler is not None: |
167
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Inventory interaction can (surprisingly) affect the inventory
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diff
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|
566 return handler(tool, state) |
166
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|
567 elif inverse_handler is not None: |
167
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diff
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|
568 return inverse_handler(self, state) |
166
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|
569 else: |
167
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570 return self.interact_default(tool, state) |
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571 |
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572 def interact_default(self, tool, state): |
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573 return Result("That doesn't do anything useful") |
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574 |
191 | 575 |
576 class CloneableItem(Item): | |
577 _counter = 0 | |
578 | |
579 def __init__(self, name): | |
580 my_count = CloneableItem._counter | |
581 CloneableItem._counter += 1 | |
582 super(CloneableItem, self).__init__("%s.%s" % (name, my_count)) |