Mercurial > pyntnclick
annotate gamelib/state.py @ 117:139864ce8bdb
removed items can't be the current tool
author | Neil Muller <neil@dip.sun.ac.za> |
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date | Tue, 24 Aug 2010 15:30:51 +0200 |
parents | 5213b45fcc7e |
children | d5f7cccfdb6c |
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.color import Color |
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9 |
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10 import constants |
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11 from sound import get_sound |
11 | 12 |
78 | 13 class Result(object): |
14 """Result of interacting with a thing""" | |
15 | |
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16 def __init__(self, message=None, soundfile=None): |
78 | 17 self.message = message |
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18 self.sound = None |
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19 if soundfile: |
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20 self.sound = get_sound(soundfile) |
78 | 21 |
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22 |
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23 def initial_state(): |
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24 """Load the initial state.""" |
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25 state = State() |
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26 state.load_scenes("cryo") |
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27 state.load_scenes("bridge") |
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28 #state.load_scenes("mess") |
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29 #state.load_scenes("engine") |
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30 #state.load_scenes("machine") |
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31 #state.load_scenes("map") |
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32 state.set_current_scene("cryo") |
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33 return state |
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34 |
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35 |
7
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36 class State(object): |
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37 """Complete game state. |
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38 |
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39 Game state consists of: |
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40 |
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41 * items |
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42 * scenes |
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43 """ |
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44 |
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45 def __init__(self): |
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46 # map of scene name -> Scene object |
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47 self.scenes = {} |
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48 # map of detail view name -> DetailView object |
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49 self.detail_views = {} |
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50 # map of item name -> Item object |
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51 self.items = {} |
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52 # list of item objects in inventory |
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53 self.inventory = [] |
73 | 54 # currently selected tool (item) |
55 self.tool = None | |
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56 # current scene |
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57 self.current_scene = None |
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58 # current detail view |
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59 self.current_detail = None |
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60 |
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61 def add_scene(self, scene): |
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62 self.scenes[scene.name] = scene |
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63 |
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64 def add_detail_view(self, detail_view): |
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65 self.detail_views[detail_view.name] = detail_view |
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66 |
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67 def add_item(self, item): |
35 | 68 self.items[item.name] = item |
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69 |
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70 def load_scenes(self, modname): |
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71 mod = __import__("gamelib.scenes.%s" % (modname,), fromlist=[modname]) |
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72 for scene_cls in mod.SCENES: |
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73 self.add_scene(scene_cls(self)) |
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74 |
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75 def set_current_scene(self, name): |
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76 self.current_scene = self.scenes[name] |
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77 |
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78 def add_inventory_item(self, name): |
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79 self.inventory.append(self.items[name]) |
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80 |
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81 def remove_inventory_item(self, name): |
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82 self.inventory.remove(self.items[name]) |
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83 # Unselect tool if it's removed |
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84 if self.tool == self.items[name]: |
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85 self.set_tool(None) |
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86 |
73 | 87 def set_tool(self, item): |
88 self.tool = item | |
89 | |
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90 def draw(self, surface): |
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91 self.current_scene.draw(surface) |
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92 |
73 | 93 def interact(self, pos): |
78 | 94 return self.current_scene.interact(self.tool, pos) |
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95 |
105
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96 def animate(self): |
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97 return self.current_scene.animate() |
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98 |
73 | 99 def mouse_move(self, pos): |
100 self.current_scene.mouse_move(self.tool, pos) | |
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101 |
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102 |
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103 class StatefulGizmo(object): |
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104 |
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105 # initial data (optional, defaults to none) |
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106 INITIAL_DATA = None |
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107 |
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108 def __init__(self): |
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109 self.data = {} |
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110 if self.INITIAL_DATA: |
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111 self.data.update(self.INITIAL_DATA) |
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112 |
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113 def set_data(self, key, value): |
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114 self.data[key] = value |
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115 |
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116 def get_data(self, key): |
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117 return self.data.get(key, None) |
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118 |
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119 |
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120 class Scene(StatefulGizmo): |
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121 """Base class for scenes.""" |
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122 |
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123 # sub-folder to look for resources in |
22 | 124 FOLDER = None |
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125 |
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126 # name of background image resource |
22 | 127 BACKGROUND = None |
128 | |
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129 # name of scene (optional, defaults to folder) |
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130 NAME = None |
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131 |
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132 def __init__(self, state): |
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133 StatefulGizmo.__init__(self) |
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134 # scene name |
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135 self.name = self.NAME if self.NAME is not None else self.FOLDER |
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136 # link back to state object |
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137 self.state = state |
22 | 138 # map of thing names -> Thing objects |
139 self.things = {} | |
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140 self._background = get_image(self.FOLDER, self.BACKGROUND) |
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141 self._current_thing = None |
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142 self._current_description = None |
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143 |
35 | 144 def add_item(self, item): |
145 self.state.add_item(item) | |
146 | |
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147 def add_thing(self, thing): |
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148 self.things[thing.name] = thing |
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149 thing.set_scene(self) |
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150 |
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151 def remove_thing(self, thing): |
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152 del self.things[thing.name] |
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153 |
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154 def _make_description(self, text): |
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155 if text is None: |
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156 return None |
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157 label = BoomLabel(text) |
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158 label.set_margin(5) |
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159 label.border_width = 1 |
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160 label.border_color = (0, 0, 0) |
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161 label.bg_color = (127, 127, 127) |
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162 label.fg_color = (0, 0, 0) |
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163 return label |
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164 |
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165 def draw_description(self, surface): |
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166 if self._current_description is not None: |
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167 sub = surface.subsurface( |
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168 Rect(5, 5, *self._current_description.size)) |
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169 self._current_description.draw_all(sub) |
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170 |
22 | 171 def draw_background(self, surface): |
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172 surface.blit(self._background, (0, 0), None) |
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173 |
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174 def draw_things(self, surface): |
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175 for thing in self.things.itervalues(): |
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176 thing.draw(surface) |
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177 |
22 | 178 def draw(self, surface): |
179 self.draw_background(surface) | |
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180 self.draw_things(surface) |
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181 self.draw_description(surface) |
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182 |
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183 def interact(self, item, pos): |
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184 """Interact with a particular position. |
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185 |
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186 Item may be an item in the list of items or None for the hand. |
78 | 187 |
188 Returns a Result object to provide feedback to the player. | |
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189 """ |
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190 for thing in self.things.itervalues(): |
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191 if thing.contains(pos): |
78 | 192 result = thing.interact(item) |
193 if result: | |
194 if self._current_thing: | |
195 # Also update descriptions if needed | |
196 self._current_description = self._make_description( | |
197 self._current_thing.get_description()) | |
198 return result | |
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199 |
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200 def animate(self): |
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201 """Animate all the things in the scene. |
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202 |
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203 Return true if any of them need to queue a redraw""" |
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204 result = False |
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205 for thing in self.things.itervalues(): |
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206 if thing.animate(): |
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207 result = True |
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208 return result |
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209 |
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210 def mouse_move(self, item, pos): |
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211 """Call to check whether the cursor has entered / exited a thing. |
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212 |
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213 Item may be an item in the list of items or None for the hand. |
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214 """ |
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215 if self._current_thing is not None: |
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216 if self._current_thing.contains(pos): |
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217 return |
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218 else: |
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219 self._current_thing.leave() |
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220 self._current_thing = None |
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221 self._current_description = None |
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222 for thing in self.things.itervalues(): |
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223 if thing.contains(pos): |
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224 thing.enter(item) |
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225 self._current_thing = thing |
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226 self._current_description = self._make_description( |
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227 thing.get_description()) |
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228 break |
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229 |
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230 |
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231 class Interact(object): |
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232 |
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233 def __init__(self, image, rect, interact_rect): |
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234 self.image = image |
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235 self.rect = rect |
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236 self.interact_rect = interact_rect |
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237 |
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238 def set_thing(self, thing): |
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239 pass |
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240 |
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241 def draw(self, surface): |
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242 if self.image is not None: |
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243 surface.blit(self.image, self.rect, None) |
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244 |
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245 def animate(self): |
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246 return False |
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247 |
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248 |
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249 class InteractNoImage(Interact): |
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250 |
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251 def __init__(self, x, y, w, h): |
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252 super(InteractNoImage, self).__init__(None, None, Rect(x, y, w, h)) |
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253 |
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254 |
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255 class InteractRectUnion(Interact): |
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256 |
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257 def __init__(self, rect_list): |
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258 # pygame.rect.Rect.unionall should do this, but is broken |
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259 # in some pygame versions (including 1.8, it appears) |
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260 rect_list = [Rect(x) for x in rect_list] |
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261 union_rect = rect_list[0] |
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262 for rect in rect_list[1:]: |
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263 union_rect = union_rect.union(rect) |
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264 super(InteractRectUnion, self).__init__(None, None, union_rect) |
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265 self.interact_rect = rect_list |
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266 |
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267 |
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268 class InteractImage(Interact): |
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269 |
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270 def __init__(self, x, y, image_name): |
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271 super(InteractImage, self).__init__(None, None, None) |
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272 self._pos = (x, y) |
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273 self._image_name = image_name |
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274 |
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275 def set_thing(self, thing): |
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276 self.image = get_image(thing.folder, self._image_name) |
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277 self.rect = Rect(self._pos, self.image.get_size()) |
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278 self.interact_rect = self.rect |
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279 |
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280 |
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281 class InteractAnimated(Interact): |
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282 """Interactive with an animation rather than an image""" |
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283 |
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284 # FIXME: Assumes all images are the same size |
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285 # anim_seq - sequence of image names |
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286 # delay - number of frames to wait between changing images |
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287 |
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288 def __init__(self, x, y, anim_seq, delay): |
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289 self._pos = (x, y) |
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290 self._anim_pos = 0 |
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291 self._names = anim_seq |
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292 self._frame_count = 0 |
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293 self._anim_seq = None |
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294 self._delay = delay |
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295 |
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296 def set_thing(self, thing): |
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297 self._anim_seq = [get_image(thing.folder, x) for x in self._names] |
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298 self.image = self._anim_seq[0] |
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299 self.rect = Rect(self._pos, self.image.get_size()) |
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300 self.interact_rect = self.rect |
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301 |
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302 def animate(self): |
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303 if self._anim_seq: |
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304 self._frame_count += 1 |
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305 if self._frame_count > self._delay: |
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306 self._frame_count = 0 |
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307 self._anim_pos += 1 |
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308 if self._anim_pos >= len(self._anim_seq): |
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309 self._anim_pos = 0 |
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310 self.image = self._anim_seq[self._anim_pos] |
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311 # queue redraw |
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312 return True |
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313 return False |
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314 |
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315 |
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316 class Thing(StatefulGizmo): |
22 | 317 """Base class for things in a scene that you can interact with.""" |
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318 |
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319 # name of thing |
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320 NAME = None |
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321 |
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322 # sub-folder to look for resources in (defaults to scenes folder) |
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323 FOLDER = None |
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324 |
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325 # list of Interact objects |
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326 INTERACTS = {} |
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327 |
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328 # name first interact |
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329 INITIAL = None |
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330 |
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331 # Interact rectangle hi-light color (for debugging) |
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332 # (set to None to turn off) |
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333 if constants.DEBUG: |
75 | 334 _interact_hilight_color = Color('red') |
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335 else: |
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336 _interact_hilight_color = None |
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337 |
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338 def __init__(self): |
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339 StatefulGizmo.__init__(self) |
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340 # name of the thing |
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341 self.name = self.NAME |
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342 # folder for resource (None is overridden by scene folder) |
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343 self.folder = self.FOLDER |
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344 # interacts |
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345 self.interacts = self.INTERACTS |
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346 # these are set by set_scene |
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347 self.scene = None |
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348 self.state = None |
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349 self.current_interact = None |
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350 self.rect = None |
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351 # TODO: add masks |
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352 |
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353 def set_scene(self, scene): |
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354 assert self.scene is None |
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355 self.scene = scene |
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356 if self.folder is None: |
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357 self.folder = scene.FOLDER |
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358 self.state = scene.state |
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359 for interact in self.interacts.itervalues(): |
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360 interact.set_thing(self) |
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361 self.set_interact(self.INITIAL) |
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362 |
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363 def set_interact(self, name): |
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364 self.current_interact = self.interacts[name] |
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365 self.rect = self.current_interact.interact_rect |
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366 assert self.rect is not None, name |
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367 |
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368 def contains(self, pos): |
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369 if hasattr(self.rect, 'collidepoint'): |
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370 return self.rect.collidepoint(pos) |
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371 else: |
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372 # FIXME: add sanity check |
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373 for rect in list(self.rect): |
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374 if rect.collidepoint(pos): |
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375 return True |
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376 return False |
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377 |
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378 def get_description(self): |
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379 return None |
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380 |
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381 def is_interactive(self): |
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382 return True |
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383 |
71
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384 def enter(self, item): |
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385 """Called when the cursor enters the Thing.""" |
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386 pass |
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387 |
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388 def leave(self): |
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389 """Called when the cursr leaves the Thing.""" |
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390 pass |
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391 |
22 | 392 def interact(self, item): |
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393 if not self.is_interactive(): |
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394 return |
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395 if item is None: |
78 | 396 return self.interact_without() |
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397 else: |
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398 handler = getattr(self, 'interact_with_' + item.name, None) |
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399 if handler is not None: |
78 | 400 return handler(item) |
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401 else: |
78 | 402 return self.interact_default(item) |
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403 |
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404 def animate(self): |
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405 return self.current_interact.animate() |
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406 |
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407 def interact_without(self): |
78 | 408 return self.interact_default(None) |
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409 |
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410 def interact_default(self, item): |
78 | 411 return Result("It doesn't work.") |
22 | 412 |
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413 def draw(self, surface): |
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414 self.current_interact.draw(surface) |
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415 if self._interact_hilight_color is not None: |
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416 if hasattr(self.rect, 'collidepoint'): |
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417 frame_rect(surface, self._interact_hilight_color, |
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418 self.rect.inflate(1, 1), 1) |
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419 else: |
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420 for rect in self.rect: |
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421 frame_rect(surface, self._interact_hilight_color, |
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422 rect.inflate(1, 1), 1) |
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423 |
22 | 424 |
425 class Item(object): | |
426 """Base class for inventory items.""" | |
427 | |
35 | 428 # image for inventory |
429 INVENTORY_IMAGE = None | |
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430 |
35 | 431 def __init__(self, name): |
432 self.name = name | |
433 self.inventory_image = get_image('items', self.INVENTORY_IMAGE) | |
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434 # TODO: needs cursor |
22 | 435 |
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Inventory and items. And stuff.
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436 def get_inventory_image(self): |
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Inventory and items. And stuff.
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437 return self.inventory_image |
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438 |