Mercurial > boomslang
annotate gamelib/state.py @ 236:f82f017db104
Add bridge screenshot
author | Neil Muller <neil@dip.sun.ac.za> |
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date | Fri, 27 Aug 2010 09:06:06 +0200 |
parents | a5325919342e |
children | b1451b0b906f |
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, style=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 |
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27 self.style = style |
78 | 28 |
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29 def process(self, scene_widget): |
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30 """Helper function to do the right thing with a result object""" |
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31 if self.sound: |
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32 self.sound.play() |
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33 if self.message: |
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34 scene_widget.show_message(self.message, self.style) |
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35 if self.detail_view: |
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36 scene_widget.show_detail(self.detail_view) |
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37 |
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38 |
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39 def handle_result(result, scene_widget): |
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40 """Handle dealing with result or result sequences""" |
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41 if result: |
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42 if hasattr(result, 'process'): |
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43 result.process(scene_widget) |
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44 else: |
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45 for res in result: |
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46 res.process(scene_widget) |
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47 |
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48 def initial_state(): |
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49 """Load the initial state.""" |
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50 state = State() |
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51 state.load_scenes("cryo") |
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52 state.load_scenes("bridge") |
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53 state.load_scenes("mess") |
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54 state.load_scenes("engine") |
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55 state.load_scenes("machine") |
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56 state.load_scenes("map") |
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57 initial_scene = "cryo" if DEBUG_SCENE is None else DEBUG_SCENE |
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58 state.set_current_scene(initial_scene) |
120 | 59 state.set_do_enter_leave() |
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60 return state |
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61 |
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62 |
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63 class State(object): |
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64 """Complete game state. |
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65 |
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66 Game state consists of: |
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67 |
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68 * items |
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69 * scenes |
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70 """ |
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71 |
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72 def __init__(self): |
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73 # map of scene name -> Scene object |
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74 self.scenes = {} |
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75 # map of detail view name -> DetailView object |
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76 self.detail_views = {} |
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77 # map of item name -> Item object |
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78 self.items = {} |
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79 # list of item objects in inventory |
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80 self.inventory = [] |
73 | 81 # currently selected tool (item) |
82 self.tool = None | |
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83 # current scene |
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84 self.current_scene = None |
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85 # current detail view |
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86 self.current_detail = None |
120 | 87 # scene we came from, for enter and leave processing |
88 self.previous_scene = None | |
89 # scene transion helpers | |
90 self.do_check = None | |
91 self.old_pos = None | |
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92 |
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93 def add_scene(self, scene): |
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94 self.scenes[scene.name] = scene |
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95 |
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96 def add_detail_view(self, detail_view): |
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97 self.detail_views[detail_view.name] = detail_view |
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98 |
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99 def add_item(self, item): |
35 | 100 self.items[item.name] = item |
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101 |
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102 def load_scenes(self, modname): |
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103 mod = __import__("gamelib.scenes.%s" % (modname,), fromlist=[modname]) |
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104 for scene_cls in mod.SCENES: |
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105 self.add_scene(scene_cls(self)) |
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106 if hasattr(mod, 'DETAIL_VIEWS'): |
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107 for scene_cls in mod.DETAIL_VIEWS: |
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108 self.add_detail_view(scene_cls(self)) |
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109 |
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110 def set_current_scene(self, name): |
120 | 111 old_scene = self.current_scene |
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112 self.current_scene = self.scenes[name] |
120 | 113 if old_scene and old_scene != self.current_scene: |
114 self.previous_scene = old_scene | |
115 self.set_do_enter_leave() | |
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116 |
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117 def set_current_detail(self, name): |
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118 if name is None: |
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119 self.current_detail = None |
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120 else: |
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121 self.current_detail = self.detail_views[name] |
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122 self.current_scene._current_description = None |
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123 self.current_scene._current_thing = None |
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124 return self.current_detail.get_detail_size() |
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125 |
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126 def add_inventory_item(self, name): |
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127 self.inventory.append(self.items[name]) |
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128 |
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129 def remove_inventory_item(self, name): |
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130 self.inventory.remove(self.items[name]) |
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131 # Unselect tool if it's removed |
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132 if self.tool == self.items[name]: |
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133 self.set_tool(None) |
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134 |
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135 def replace_inventory_item(self, old_item, new_item): |
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136 """Try to replace an item in the inventory with a new one""" |
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137 try: |
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138 index = self.inventory.index(old_item) |
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139 self.inventory[index] = new_item |
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140 if self.tool == old_item: |
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141 self.set_tool(new_item) |
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142 except ValueError: |
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143 return False |
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144 return True |
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145 |
73 | 146 def set_tool(self, item): |
147 self.tool = item | |
148 | |
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149 def draw(self, surface, screen): |
120 | 150 if self.do_check and self.previous_scene and self.do_check == constants.LEAVE: |
151 # We still need to handle leave events, so still display the scene | |
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152 self.previous_scene.draw(surface, screen) |
120 | 153 else: |
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154 self.current_scene.draw(surface, screen) |
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155 |
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156 def draw_detail(self, surface, screen): |
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157 self.current_detail.draw(surface, screen) |
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158 |
73 | 159 def interact(self, pos): |
78 | 160 return self.current_scene.interact(self.tool, pos) |
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161 |
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162 def interact_detail(self, pos): |
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163 return self.current_detail.interact(self.tool, pos) |
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164 |
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165 def animate(self): |
120 | 166 if not self.do_check: |
167 return self.current_scene.animate() | |
168 | |
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169 def check_enter_leave(self, screen): |
120 | 170 if not self.do_check: |
171 return None | |
172 if self.do_check == constants.LEAVE: | |
173 self.do_check = constants.ENTER | |
174 if self.previous_scene: | |
175 return self.previous_scene.leave() | |
176 return None | |
177 elif self.do_check == constants.ENTER: | |
178 self.do_check = None | |
179 # Fix descriptions, etc. | |
180 if self.old_pos: | |
187
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181 self.current_scene.mouse_move(self.tool, self.old_pos, screen) |
120 | 182 return self.current_scene.enter() |
183 raise RuntimeError('invalid do_check value %s' % self.do_check) | |
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184 |
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185 def mouse_move(self, pos, screen): |
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186 self.current_scene.mouse_move(self.tool, pos, screen) |
120 | 187 # So we can do sensible things on enter and leave |
188 self.old_pos = pos | |
189 | |
190 def set_do_enter_leave(self): | |
191 """Flag that we need to run the enter loop""" | |
192 self.do_check = constants.LEAVE | |
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193 |
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194 def mouse_move_detail(self, pos, screen): |
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195 self.current_detail.mouse_move(self.tool, pos, screen) |
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196 |
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197 |
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198 class StatefulGizmo(object): |
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199 |
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200 # initial data (optional, defaults to none) |
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201 INITIAL_DATA = None |
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202 |
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203 def __init__(self): |
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204 self.data = {} |
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205 if self.INITIAL_DATA: |
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206 self.data.update(self.INITIAL_DATA) |
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207 |
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208 def set_data(self, key, value): |
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209 self.data[key] = value |
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210 |
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211 def get_data(self, key): |
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212 return self.data.get(key, None) |
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213 |
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214 |
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215 class Scene(StatefulGizmo): |
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216 """Base class for scenes.""" |
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217 |
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218 # sub-folder to look for resources in |
22 | 219 FOLDER = None |
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220 |
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221 # name of background image resource |
22 | 222 BACKGROUND = None |
223 | |
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224 # name of scene (optional, defaults to folder) |
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225 NAME = None |
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226 |
125
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227 # size (for detail views) |
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228 SIZE = constants.SCENE_SIZE |
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229 |
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230 def __init__(self, state): |
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231 StatefulGizmo.__init__(self) |
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232 # scene name |
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233 self.name = self.NAME if self.NAME is not None else self.FOLDER |
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234 # link back to state object |
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235 self.state = state |
22 | 236 # map of thing names -> Thing objects |
237 self.things = {} | |
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238 if self.BACKGROUND is not None: |
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239 self._background = get_image(self.FOLDER, self.BACKGROUND) |
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240 else: |
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241 self._background = None |
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242 self._current_thing = None |
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243 self._current_description = None |
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244 |
35 | 245 def add_item(self, item): |
246 self.state.add_item(item) | |
247 | |
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248 def add_thing(self, thing): |
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249 self.things[thing.name] = thing |
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250 thing.set_scene(self) |
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251 |
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252 def remove_thing(self, thing): |
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253 del self.things[thing.name] |
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254 |
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255 def _make_description(self, text): |
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256 if text is None: |
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257 return None |
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258 label = BoomLabel(text) |
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259 label.set_margin(5) |
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260 label.border_width = 1 |
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261 label.border_color = (0, 0, 0) |
210
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262 label.bg_color = Color(127, 127, 127, 255) |
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263 label.fg_color = (0, 0, 0) |
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264 return label |
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265 |
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266 def draw_description(self, surface, screen): |
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267 if self._current_description is not None: |
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268 sub = screen.get_root().surface.subsurface( |
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269 Rect(5, 5, *self._current_description.size)) |
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270 self._current_description.draw_all(sub) |
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271 |
22 | 272 def draw_background(self, surface): |
130
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273 if self._background is not None: |
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274 surface.blit(self._background, (0, 0), None) |
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275 else: |
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276 surface.fill((200, 200, 200)) |
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277 |
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278 def draw_things(self, surface): |
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279 for thing in self.things.itervalues(): |
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280 thing.draw(surface) |
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281 |
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282 def draw(self, surface, screen): |
22 | 283 self.draw_background(surface) |
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284 self.draw_things(surface) |
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285 self.draw_description(surface, screen) |
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286 |
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287 def interact(self, item, pos): |
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288 """Interact with a particular position. |
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289 |
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290 Item may be an item in the list of items or None for the hand. |
78 | 291 |
292 Returns a Result object to provide feedback to the player. | |
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293 """ |
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294 for thing in self.things.itervalues(): |
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295 if thing.contains(pos): |
78 | 296 result = thing.interact(item) |
297 if result: | |
298 if self._current_thing: | |
299 # Also update descriptions if needed | |
300 self._current_description = self._make_description( | |
301 self._current_thing.get_description()) | |
302 return result | |
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303 |
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304 def animate(self): |
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305 """Animate all the things in the scene. |
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306 |
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307 Return true if any of them need to queue a redraw""" |
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308 result = False |
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309 for thing in self.things.itervalues(): |
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310 if thing.animate(): |
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311 result = True |
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312 return result |
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313 |
120 | 314 def enter(self): |
315 return None | |
316 | |
317 def leave(self): | |
318 self._current_description = None | |
319 return None | |
320 | |
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321 def mouse_move(self, item, pos, screen): |
71
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322 """Call to check whether the cursor has entered / exited a thing. |
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323 |
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324 Item may be an item in the list of items or None for the hand. |
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325 """ |
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326 if self._current_thing is not None: |
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327 if self._current_thing.contains(pos): |
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328 screen.cursor_highlight(True) |
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329 return |
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330 else: |
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331 self._current_thing.leave() |
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332 self._current_thing = None |
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333 self._current_description = None |
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334 for thing in self.things.itervalues(): |
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335 if thing.contains(pos): |
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336 thing.enter(item) |
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337 self._current_thing = thing |
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338 self._current_description = self._make_description( |
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339 thing.get_description()) |
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340 break |
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341 screen.cursor_highlight(self._current_thing is not None) |
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342 |
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343 def get_detail_size(self): |
127
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344 return self._background.get_size() |
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345 |
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346 |
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347 class Interact(object): |
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348 |
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349 def __init__(self, image, rect, interact_rect): |
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350 self.image = image |
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351 self.rect = rect |
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352 self.interact_rect = interact_rect |
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353 |
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354 def set_thing(self, thing): |
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355 pass |
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356 |
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357 def draw(self, surface): |
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358 if self.image is not None: |
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359 surface.blit(self.image, self.rect, None) |
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360 |
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361 def animate(self): |
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362 return False |
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363 |
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364 |
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365 class InteractNoImage(Interact): |
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366 |
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367 def __init__(self, x, y, w, h): |
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368 super(InteractNoImage, self).__init__(None, None, Rect(x, y, w, h)) |
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369 |
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370 |
130
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371 class InteractText(Interact): |
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372 """Display box with text to interact with -- mostly for debugging.""" |
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373 |
132
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374 def __init__(self, x, y, text, bg_color=None): |
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375 if bg_color is None: |
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376 bg_color = (127, 127, 127) |
130
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377 label = BoomLabel(text) |
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378 label.set_margin(5) |
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379 label.border_width = 1 |
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380 label.border_color = (0, 0, 0) |
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381 label.bg_color = bg_color |
130
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382 label.fg_color = (0, 0, 0) |
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383 image = Surface(label.size) |
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384 rect = Rect((x, y), label.size) |
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385 label.draw_all(image) |
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386 super(InteractText, self).__init__(image, rect, rect) |
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387 |
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388 |
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389 class InteractRectUnion(Interact): |
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390 |
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391 def __init__(self, rect_list): |
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392 # pygame.rect.Rect.unionall should do this, but is broken |
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393 # in some pygame versions (including 1.8, it appears) |
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394 rect_list = [Rect(x) for x in rect_list] |
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395 union_rect = rect_list[0] |
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396 for rect in rect_list[1:]: |
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397 union_rect = union_rect.union(rect) |
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398 super(InteractRectUnion, self).__init__(None, None, union_rect) |
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399 self.interact_rect = rect_list |
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400 |
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401 |
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402 class InteractImage(Interact): |
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403 |
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404 def __init__(self, x, y, image_name): |
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405 super(InteractImage, self).__init__(None, None, None) |
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406 self._pos = (x, y) |
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407 self._image_name = image_name |
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408 |
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409 def set_thing(self, thing): |
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410 self.image = get_image(thing.folder, self._image_name) |
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411 self.rect = Rect(self._pos, self.image.get_size()) |
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412 self.interact_rect = self.rect |
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413 |
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414 |
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415 class InteractAnimated(Interact): |
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416 """Interactive with an animation rather than an image""" |
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417 |
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418 # FIXME: Assumes all images are the same size |
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419 # anim_seq - sequence of image names |
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420 # delay - number of frames to wait between changing images |
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421 |
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422 def __init__(self, x, y, anim_seq, delay): |
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423 self._pos = (x, y) |
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424 self._anim_pos = 0 |
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425 self._names = anim_seq |
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426 self._frame_count = 0 |
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427 self._anim_seq = None |
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428 self._delay = delay |
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429 |
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430 def set_thing(self, thing): |
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431 self._anim_seq = [get_image(thing.folder, x) for x in self._names] |
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432 self.image = self._anim_seq[0] |
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433 self.rect = Rect(self._pos, self.image.get_size()) |
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434 self.interact_rect = self.rect |
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435 |
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436 def animate(self): |
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437 if self._anim_seq: |
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438 self._frame_count += 1 |
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439 if self._frame_count > self._delay: |
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440 self._frame_count = 0 |
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441 self._anim_pos += 1 |
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442 if self._anim_pos >= len(self._anim_seq): |
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443 self._anim_pos = 0 |
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444 self.image = self._anim_seq[self._anim_pos] |
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445 # queue redraw |
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446 return True |
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|
447 return False |
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448 |
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449 |
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450 class Thing(StatefulGizmo): |
22 | 451 """Base class for things in a scene that you can interact with.""" |
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452 |
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453 # name of thing |
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454 NAME = None |
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455 |
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456 # sub-folder to look for resources in (defaults to scenes folder) |
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457 FOLDER = None |
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458 |
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459 # list of Interact objects |
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460 INTERACTS = {} |
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461 |
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462 # name first interact |
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463 INITIAL = None |
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464 |
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465 # Interact rectangle hi-light color (for debugging) |
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466 # (set to None to turn off) |
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467 if constants.DEBUG: |
75 | 468 _interact_hilight_color = Color('red') |
68
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469 else: |
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470 _interact_hilight_color = None |
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471 |
86
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472 def __init__(self): |
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473 StatefulGizmo.__init__(self) |
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474 # name of the thing |
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475 self.name = self.NAME |
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476 # folder for resource (None is overridden by scene folder) |
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477 self.folder = self.FOLDER |
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478 # interacts |
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479 self.interacts = self.INTERACTS |
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480 # these are set by set_scene |
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481 self.scene = None |
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482 self.state = None |
86
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483 self.current_interact = None |
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484 self.rect = None |
32
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485 # TODO: add masks |
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486 |
39
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487 def set_scene(self, scene): |
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488 assert self.scene is None |
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489 self.scene = scene |
86
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490 if self.folder is None: |
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491 self.folder = scene.FOLDER |
39
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492 self.state = scene.state |
86
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493 for interact in self.interacts.itervalues(): |
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494 interact.set_thing(self) |
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495 self.set_interact(self.INITIAL) |
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|
496 |
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497 def set_interact(self, name): |
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498 self.current_interact = self.interacts[name] |
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499 self.rect = self.current_interact.interact_rect |
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500 assert self.rect is not None, name |
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|
501 |
94
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502 def contains(self, pos): |
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503 if hasattr(self.rect, 'collidepoint'): |
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504 return self.rect.collidepoint(pos) |
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|
505 else: |
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|
506 # FIXME: add sanity check |
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|
507 for rect in list(self.rect): |
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508 if rect.collidepoint(pos): |
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|
509 return True |
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|
510 return False |
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|
511 |
63
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|
512 def get_description(self): |
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|
513 return None |
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diff
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|
514 |
56
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|
515 def is_interactive(self): |
133
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516 return self.current_interact is not None |
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|
517 |
71
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|
518 def enter(self, item): |
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|
519 """Called when the cursor enters the Thing.""" |
139
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|
520 pass |
71
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|
521 |
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|
522 def leave(self): |
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|
523 """Called when the cursr leaves the Thing.""" |
139
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|
524 pass |
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|
525 |
22 | 526 def interact(self, item): |
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|
527 if not self.is_interactive(): |
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diff
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|
528 return |
41
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529 if item is None: |
78 | 530 return self.interact_without() |
41
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531 else: |
193
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532 handler = getattr(self, 'interact_with_' + item.tool_name, None) |
41
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|
533 if handler is not None: |
78 | 534 return handler(item) |
41
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535 else: |
78 | 536 return self.interact_default(item) |
41
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|
537 |
105
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538 def animate(self): |
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539 return self.current_interact.animate() |
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|
540 |
41
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|
541 def interact_without(self): |
78 | 542 return self.interact_default(None) |
41
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|
543 |
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|
544 def interact_default(self, item): |
78 | 545 return Result("It doesn't work.") |
22 | 546 |
23
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|
547 def draw(self, surface): |
86
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|
548 self.current_interact.draw(surface) |
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|
549 if self._interact_hilight_color is not None: |
94
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|
550 if hasattr(self.rect, 'collidepoint'): |
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|
551 frame_rect(surface, self._interact_hilight_color, |
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552 self.rect.inflate(1, 1), 1) |
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|
553 else: |
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|
554 for rect in self.rect: |
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|
555 frame_rect(surface, self._interact_hilight_color, |
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|
556 rect.inflate(1, 1), 1) |
23
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diff
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|
557 |
22 | 558 |
559 class Item(object): | |
560 """Base class for inventory items.""" | |
561 | |
35 | 562 # image for inventory |
563 INVENTORY_IMAGE = None | |
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|
564 |
226 | 565 TOOL_NAME = None |
566 | |
35 | 567 def __init__(self, name): |
568 self.name = name | |
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|
569 self.tool_name = name |
226 | 570 if self.TOOL_NAME is not None: |
571 self.tool_name = self.TOOL_NAME | |
35 | 572 self.inventory_image = get_image('items', self.INVENTORY_IMAGE) |
32
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573 # TODO: needs cursor |
22 | 574 |
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Inventory and items. And stuff.
Jeremy Thurgood <firxen@gmail.com>
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575 def get_inventory_image(self): |
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576 return self.inventory_image |
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Inventory and items. And stuff.
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parents:
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577 |
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Inventory interaction can (surprisingly) affect the inventory
Neil Muller <neil@dip.sun.ac.za>
parents:
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578 def interact(self, tool, state): |
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579 handler = getattr(self, 'interact_with_' + tool.name, None) |
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CloneableItem tweaks and a usable laser welder. zOMG!
Jeremy Thurgood <firxen@gmail.com>
parents:
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580 inverse_handler = getattr(tool, 'interact_with_' + self.tool_name, None) |
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581 if handler is not None: |
167
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Inventory interaction can (surprisingly) affect the inventory
Neil Muller <neil@dip.sun.ac.za>
parents:
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582 return handler(tool, state) |
166
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583 elif inverse_handler is not None: |
167
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Inventory interaction can (surprisingly) affect the inventory
Neil Muller <neil@dip.sun.ac.za>
parents:
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584 return inverse_handler(self, state) |
166
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585 else: |
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Neil Muller <neil@dip.sun.ac.za>
parents:
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586 return self.interact_default(tool, state) |
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587 |
167
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Inventory interaction can (surprisingly) affect the inventory
Neil Muller <neil@dip.sun.ac.za>
parents:
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588 def interact_default(self, tool, state): |
166
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589 return Result("That doesn't do anything useful") |
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590 |
191 | 591 |
592 class CloneableItem(Item): | |
593 _counter = 0 | |
594 | |
595 def __init__(self, name): | |
596 my_count = CloneableItem._counter | |
597 CloneableItem._counter += 1 | |
598 super(CloneableItem, self).__init__("%s.%s" % (name, my_count)) | |
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CloneableItem tweaks and a usable laser welder. zOMG!
Jeremy Thurgood <firxen@gmail.com>
parents:
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599 self.tool_name = name |
226 | 600 if self.TOOL_NAME is not None: |
601 self.tool_name = self.TOOL_NAME |