Mercurial > pyntnclick
annotate gamelib/state.py @ 502:f53aaba58273
Use relative motion for images to remove jumping when combining key & mouse
author | Neil Muller <neil@dip.sun.ac.za> |
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date | Wed, 01 Sep 2010 14:59:07 +0200 |
parents | 168e9424fe91 |
children | 93ddcac0b772 |
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 import copy |
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4 |
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5 from albow.resource import get_image, get_font |
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6 from albow.utils import frame_rect |
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7 from widgets import BoomLabel |
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8 from pygame.rect import Rect |
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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 |
11 | 13 |
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14 # override the initial scene to for debugging |
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15 DEBUG_SCENE = None |
124 | 16 |
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17 # whether to show debugging rects |
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18 DEBUG_RECTS = False |
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19 |
78 | 20 class Result(object): |
21 """Result of interacting with a thing""" | |
22 | |
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23 def __init__(self, message=None, soundfile=None, detail_view=None, style=None, close_detail=False, end_game=False): |
78 | 24 self.message = message |
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25 self.sound = None |
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26 if soundfile: |
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27 self.sound = get_sound(soundfile) |
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28 self.detail_view = detail_view |
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29 self.style = style |
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30 self.close_detail = close_detail |
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31 self.end_game = end_game |
78 | 32 |
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33 def process(self, scene_widget): |
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34 """Helper function to do the right thing with a result object""" |
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35 if self.sound: |
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36 self.sound.play() |
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37 if self.message: |
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38 scene_widget.show_message(self.message, self.style) |
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39 if self.detail_view: |
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40 scene_widget.show_detail(self.detail_view) |
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41 if self.close_detail and hasattr(scene_widget, 'parent') and hasattr(scene_widget.parent, 'clear_detail'): |
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42 scene_widget.parent.clear_detail() |
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43 if self.end_game: |
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44 scene_widget.end_game() |
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45 |
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46 |
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47 def handle_result(result, scene_widget): |
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48 """Handle dealing with result or result sequences""" |
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49 if result: |
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50 if hasattr(result, 'process'): |
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51 result.process(scene_widget) |
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52 else: |
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53 for res in result: |
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54 if res: |
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55 # List may contain None's |
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56 res.process(scene_widget) |
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57 |
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58 |
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59 def initial_state(): |
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60 """Load the initial state.""" |
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61 state = State() |
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62 state.load_scenes("cryo") |
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63 state.load_scenes("bridge") |
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64 state.load_scenes("mess") |
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65 state.load_scenes("engine") |
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66 state.load_scenes("machine") |
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67 state.load_scenes("crew_quarters") |
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68 state.load_scenes("map") |
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69 state.load_scenes("manual") |
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70 initial_scene = "cryo" if DEBUG_SCENE is None else DEBUG_SCENE |
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71 state.set_current_scene(initial_scene) |
120 | 72 state.set_do_enter_leave() |
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73 return state |
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74 |
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75 |
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76 class State(object): |
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77 """Complete game state. |
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78 |
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79 Game state consists of: |
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80 |
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81 * items |
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82 * scenes |
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83 """ |
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84 |
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85 def __init__(self): |
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86 # map of scene name -> Scene object |
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87 self.scenes = {} |
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88 # map of detail view name -> DetailView object |
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89 self.detail_views = {} |
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90 # map of item name -> Item object |
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91 self.items = {} |
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92 # list of item objects in inventory |
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93 self.inventory = [] |
73 | 94 # currently selected tool (item) |
95 self.tool = None | |
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96 # current scene |
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97 self.current_scene = None |
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98 # current detail view |
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99 self.current_detail = None |
120 | 100 # scene we came from, for enter and leave processing |
101 self.previous_scene = None | |
102 # scene transion helpers | |
103 self.do_check = None | |
104 self.old_pos = None | |
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105 # current thing |
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106 self.current_thing = None |
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107 self.highlight_override = False |
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108 |
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109 def add_scene(self, scene): |
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110 self.scenes[scene.name] = scene |
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111 |
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112 def add_detail_view(self, detail_view): |
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113 self.detail_views[detail_view.name] = detail_view |
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114 |
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115 def add_item(self, item): |
35 | 116 self.items[item.name] = item |
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117 |
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118 def load_scenes(self, modname): |
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119 mod = __import__("gamelib.scenes.%s" % (modname,), fromlist=[modname]) |
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120 for scene_cls in mod.SCENES: |
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121 self.add_scene(scene_cls(self)) |
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122 if hasattr(mod, 'DETAIL_VIEWS'): |
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123 for scene_cls in mod.DETAIL_VIEWS: |
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124 self.add_detail_view(scene_cls(self)) |
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125 |
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126 def set_current_scene(self, name): |
120 | 127 old_scene = self.current_scene |
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128 self.current_scene = self.scenes[name] |
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129 self.current_thing = None |
120 | 130 if old_scene and old_scene != self.current_scene: |
131 self.previous_scene = old_scene | |
132 self.set_do_enter_leave() | |
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133 |
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134 def set_current_detail(self, name): |
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135 self.current_thing = None |
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136 if name is None: |
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137 self.current_detail = None |
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138 else: |
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139 self.current_detail = self.detail_views[name] |
125
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140 return self.current_detail.get_detail_size() |
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141 |
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142 def add_inventory_item(self, name): |
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143 self.inventory.append(self.items[name]) |
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144 |
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145 def is_in_inventory(self, name): |
340
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146 if name in self.items: |
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147 return self.items[name] in self.inventory |
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148 return False |
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149 |
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150 def remove_inventory_item(self, name): |
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151 self.inventory.remove(self.items[name]) |
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152 # Unselect tool if it's removed |
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153 if self.tool == self.items[name]: |
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154 self.set_tool(None) |
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155 |
305
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156 def replace_inventory_item(self, old_item_name, new_item_name): |
167
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157 """Try to replace an item in the inventory with a new one""" |
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158 try: |
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159 index = self.inventory.index(self.items[old_item_name]) |
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160 self.inventory[index] = self.items[new_item_name] |
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161 if self.tool == self.items[old_item_name]: |
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162 self.set_tool(self.items[new_item_name]) |
167
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163 except ValueError: |
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164 return False |
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165 return True |
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166 |
73 | 167 def set_tool(self, item): |
168 self.tool = item | |
169 | |
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170 def draw(self, surface, screen): |
120 | 171 if self.do_check and self.previous_scene and self.do_check == constants.LEAVE: |
172 # We still need to handle leave events, so still display the scene | |
187
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173 self.previous_scene.draw(surface, screen) |
120 | 174 else: |
187
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175 self.current_scene.draw(surface, screen) |
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176 |
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177 def draw_detail(self, surface, screen): |
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178 self.current_detail.draw(surface, screen) |
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179 |
73 | 180 def interact(self, pos): |
78 | 181 return self.current_scene.interact(self.tool, pos) |
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182 |
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183 def interact_detail(self, pos): |
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184 return self.current_detail.interact(self.tool, pos) |
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185 |
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186 def cancel_doodah(self, screen): |
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187 if self.tool: |
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188 self.set_tool(None) |
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189 elif self.current_detail: |
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190 screen.state_widget.clear_detail() |
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191 |
314
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192 def do_enter_detail(self): |
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193 if self.current_detail: |
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194 self.current_detail.enter() |
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195 |
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196 def do_leave_detail(self): |
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197 if self.current_detail: |
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198 self.current_detail.leave() |
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199 |
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200 def animate(self): |
120 | 201 if not self.do_check: |
202 return self.current_scene.animate() | |
203 | |
187
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204 def check_enter_leave(self, screen): |
120 | 205 if not self.do_check: |
206 return None | |
207 if self.do_check == constants.LEAVE: | |
208 self.do_check = constants.ENTER | |
209 if self.previous_scene: | |
210 return self.previous_scene.leave() | |
211 return None | |
212 elif self.do_check == constants.ENTER: | |
213 self.do_check = None | |
214 # Fix descriptions, etc. | |
215 if self.old_pos: | |
324
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216 self.current_scene.update_current_thing(self.old_pos) |
120 | 217 return self.current_scene.enter() |
218 raise RuntimeError('invalid do_check value %s' % self.do_check) | |
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219 |
324
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220 def mouse_move(self, pos): |
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221 self.current_scene.mouse_move(pos) |
120 | 222 # So we can do sensible things on enter and leave |
223 self.old_pos = pos | |
224 | |
225 def set_do_enter_leave(self): | |
226 """Flag that we need to run the enter loop""" | |
227 self.do_check = constants.LEAVE | |
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228 |
324
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229 def mouse_move_detail(self, pos): |
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230 self.current_detail.mouse_move(pos) |
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231 |
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232 |
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233 class StatefulGizmo(object): |
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234 |
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235 # initial data (optional, defaults to none) |
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236 INITIAL_DATA = None |
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237 |
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238 def __init__(self): |
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239 self.data = {} |
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240 if self.INITIAL_DATA: |
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241 # deep copy of INITIAL_DATA allows lists, sets and |
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242 # other mutable types to safely be used in INITIAL_DATA |
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243 self.data.update(copy.deepcopy(self.INITIAL_DATA)) |
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244 |
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245 def set_data(self, key, value): |
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246 self.data[key] = value |
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247 |
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248 def get_data(self, key): |
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249 return self.data.get(key, None) |
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250 |
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251 |
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252 class Scene(StatefulGizmo): |
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253 """Base class for scenes.""" |
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254 |
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255 # sub-folder to look for resources in |
22 | 256 FOLDER = None |
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257 |
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258 # name of background image resource |
22 | 259 BACKGROUND = None |
260 | |
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261 # name of scene (optional, defaults to folder) |
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262 NAME = None |
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263 |
278 | 264 # Offset of the background image |
265 OFFSET = (0, 0) | |
266 | |
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267 # size (for detail views) |
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268 SIZE = constants.SCENE_SIZE |
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269 |
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270 def __init__(self, state): |
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271 StatefulGizmo.__init__(self) |
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272 # scene name |
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273 self.name = self.NAME if self.NAME is not None else self.FOLDER |
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274 # link back to state object |
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275 self.state = state |
22 | 276 # map of thing names -> Thing objects |
277 self.things = {} | |
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278 if self.BACKGROUND is not None: |
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279 self._background = get_image(self.FOLDER, self.BACKGROUND) |
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280 else: |
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281 self._background = None |
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282 |
35 | 283 def add_item(self, item): |
284 self.state.add_item(item) | |
285 | |
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286 def add_thing(self, thing): |
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287 self.things[thing.name] = thing |
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288 thing.set_scene(self) |
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289 |
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290 def remove_thing(self, thing): |
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291 del self.things[thing.name] |
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292 if thing is self.state.current_thing: |
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293 self.state.current_thing.leave() |
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294 self.state.current_thing = None |
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295 |
319
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296 def _get_description(self): |
324
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297 text = (self.state.current_thing and |
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298 self.state.current_thing.get_description()) |
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299 if text is None: |
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300 return None |
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301 label = BoomLabel(text) |
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302 font = get_font(15, 'VeraBd.ttf') |
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303 label.set_margin(5) |
76
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304 label.border_width = 1 |
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305 label.border_color = (0, 0, 0) |
326
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306 label.bg_color = Color(210, 210, 210, 255) |
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307 label.fg_color = (0, 0, 0) |
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308 return label |
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309 |
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310 def draw_description(self, surface, screen): |
319
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311 description = self._get_description() |
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312 if description is not None: |
326
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313 w, h = description.size |
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314 sub = screen.get_root().surface.subsurface( |
326
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315 Rect(400-w/2, 5, w, h)) |
319
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316 description.draw_all(sub) |
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317 |
22 | 318 def draw_background(self, surface): |
130
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319 if self._background is not None: |
278 | 320 surface.blit(self._background, self.OFFSET, None) |
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321 else: |
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322 surface.fill((200, 200, 200)) |
18
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323 |
23
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324 def draw_things(self, surface): |
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325 for thing in self.things.itervalues(): |
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326 thing.draw(surface) |
18
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327 |
187
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328 def draw(self, surface, screen): |
22 | 329 self.draw_background(surface) |
23
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330 self.draw_things(surface) |
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331 self.draw_description(surface, screen) |
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332 |
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333 def interact(self, item, pos): |
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334 """Interact with a particular position. |
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335 |
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336 Item may be an item in the list of items or None for the hand. |
78 | 337 |
338 Returns a Result object to provide feedback to the player. | |
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339 """ |
324
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340 if self.state.current_thing is not None: |
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341 return self.state.current_thing.interact(item) |
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342 |
105
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343 def animate(self): |
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344 """Animate all the things in the scene. |
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345 |
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346 Return true if any of them need to queue a redraw""" |
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347 result = False |
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348 for thing in self.things.itervalues(): |
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349 if thing.animate(): |
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350 result = True |
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351 return result |
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|
352 |
120 | 353 def enter(self): |
354 return None | |
355 | |
356 def leave(self): | |
357 return None | |
358 | |
324
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359 def update_current_thing(self, pos): |
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360 if self.state.current_thing is not None: |
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361 if not self.state.current_thing.contains(pos): |
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362 self.state.current_thing.leave() |
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363 self.state.current_thing = None |
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364 for thing in self.things.itervalues(): |
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365 if thing.contains(pos): |
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|
366 thing.enter(self.state.tool) |
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367 self.state.current_thing = thing |
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368 break |
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369 |
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370 def mouse_move(self, pos): |
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371 """Call to check whether the cursor has entered / exited a thing. |
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372 |
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373 Item may be an item in the list of items or None for the hand. |
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374 """ |
324
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375 self.update_current_thing(pos) |
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376 |
125
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|
377 def get_detail_size(self): |
127
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Size detail window based on the Scene background image.
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378 return self._background.get_size() |
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379 |
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380 |
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381 class Thing(StatefulGizmo): |
22 | 382 """Base class for things in a scene that you can interact with.""" |
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383 |
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384 # name of thing |
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385 NAME = None |
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386 |
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387 # sub-folder to look for resources in (defaults to scenes folder) |
41
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388 FOLDER = None |
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389 |
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390 # list of Interact objects |
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391 INTERACTS = {} |
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392 |
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393 # name first interact |
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394 INITIAL = None |
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395 |
68
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396 # Interact rectangle hi-light color (for debugging) |
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397 # (set to None to turn off) |
282
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398 _interact_hilight_color = Color('red') |
68
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|
399 |
86
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|
400 def __init__(self): |
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401 StatefulGizmo.__init__(self) |
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402 # name of the thing |
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403 self.name = self.NAME |
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404 # folder for resource (None is overridden by scene folder) |
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405 self.folder = self.FOLDER |
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|
406 # interacts |
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407 self.interacts = self.INTERACTS |
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408 # these are set by set_scene |
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409 self.scene = None |
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410 self.state = None |
86
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411 self.current_interact = None |
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412 self.rect = None |
280
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|
413 self.orig_rect = None |
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|
414 |
278 | 415 def _fix_rect(self): |
416 """Fix rects to compensate for scene offset""" | |
280
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417 # Offset logic is to always work with copies, to avoid |
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418 # flying effects from multiple calls to _fix_rect |
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419 # See footwork in draw |
278 | 420 if hasattr(self.rect, 'collidepoint'): |
280
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421 self.rect = self.rect.move(self.scene.OFFSET) |
278 | 422 else: |
280
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423 self.rect = [x.move(self.scene.OFFSET) for x in self.rect] |
278 | 424 |
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425 def set_scene(self, scene): |
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426 assert self.scene is None |
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427 self.scene = scene |
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428 if self.folder is None: |
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429 self.folder = scene.FOLDER |
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430 self.state = scene.state |
86
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431 for interact in self.interacts.itervalues(): |
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432 interact.set_thing(self) |
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433 self.set_interact(self.INITIAL) |
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434 |
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435 def set_interact(self, name): |
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436 self.current_interact = self.interacts[name] |
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437 self.rect = self.current_interact.interact_rect |
278 | 438 if self.scene: |
439 self._fix_rect() | |
86
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440 assert self.rect is not None, name |
39
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441 |
94
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442 def contains(self, pos): |
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443 if hasattr(self.rect, 'collidepoint'): |
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444 return self.rect.collidepoint(pos) |
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445 else: |
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446 # FIXME: add sanity check |
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447 for rect in list(self.rect): |
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448 if rect.collidepoint(pos): |
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449 return True |
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450 return False |
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451 |
63
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452 def get_description(self): |
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453 return None |
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454 |
56
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455 def is_interactive(self): |
266
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456 return True |
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457 |
71
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458 def enter(self, item): |
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459 """Called when the cursor enters the Thing.""" |
139
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460 pass |
71
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461 |
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462 def leave(self): |
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463 """Called when the cursr leaves the Thing.""" |
139
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464 pass |
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465 |
22 | 466 def interact(self, item): |
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467 if not self.is_interactive(): |
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468 return |
41
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469 if item is None: |
78 | 470 return self.interact_without() |
41
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471 else: |
193
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472 handler = getattr(self, 'interact_with_' + item.tool_name, None) |
41
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473 if handler is not None: |
78 | 474 return handler(item) |
41
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475 else: |
78 | 476 return self.interact_default(item) |
41
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477 |
105
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478 def animate(self): |
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479 return self.current_interact.animate() |
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480 |
41
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481 def interact_without(self): |
78 | 482 return self.interact_default(None) |
41
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483 |
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484 def interact_default(self, item): |
435 | 485 return None |
22 | 486 |
23
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487 def draw(self, surface): |
280
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diff
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488 old_rect = self.current_interact.rect |
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diff
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|
489 if old_rect: |
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diff
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|
490 self.current_interact.rect = old_rect.move(self.scene.OFFSET) |
86
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491 self.current_interact.draw(surface) |
280
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diff
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492 self.current_interact.rect = old_rect |
311
00eb7ea2b7ea
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|
493 if DEBUG_RECTS and self._interact_hilight_color: |
94
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494 if hasattr(self.rect, 'collidepoint'): |
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|
495 frame_rect(surface, self._interact_hilight_color, |
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496 self.rect.inflate(1, 1), 1) |
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|
497 else: |
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|
498 for rect in self.rect: |
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|
499 frame_rect(surface, self._interact_hilight_color, |
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|
500 rect.inflate(1, 1), 1) |
23
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22
diff
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|
501 |
22 | 502 |
503 class Item(object): | |
504 """Base class for inventory items.""" | |
505 | |
35 | 506 # image for inventory |
507 INVENTORY_IMAGE = None | |
32
18cb1af411ef
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parents:
30
diff
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|
508 |
336
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diff
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|
509 # name for interactions (i.e. def interact_with_<TOOL_NAME>) |
226 | 510 TOOL_NAME = None |
511 | |
336
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|
512 # set to instance of CursorSprite |
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|
513 CURSOR = None |
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|
514 |
35 | 515 def __init__(self, name): |
516 self.name = name | |
193
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517 self.tool_name = name |
226 | 518 if self.TOOL_NAME is not None: |
519 self.tool_name = self.TOOL_NAME | |
35 | 520 self.inventory_image = get_image('items', self.INVENTORY_IMAGE) |
22 | 521 |
34
e5c043aeed65
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diff
changeset
|
522 def get_inventory_image(self): |
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diff
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|
523 return self.inventory_image |
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33
diff
changeset
|
524 |
167
5845a3ed4dad
Inventory interaction can (surprisingly) affect the inventory
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166
diff
changeset
|
525 def interact(self, tool, state): |
384
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Initial manual implementation.
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diff
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|
526 if tool is None: |
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Initial manual implementation.
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diff
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|
527 return self.interact_without(state) |
166
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diff
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|
528 handler = getattr(self, 'interact_with_' + tool.name, None) |
193
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CloneableItem tweaks and a usable laser welder. zOMG!
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diff
changeset
|
529 inverse_handler = getattr(tool, 'interact_with_' + self.tool_name, None) |
166
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Add inventory interactions
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|
530 if handler is not None: |
167
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Inventory interaction can (surprisingly) affect the inventory
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166
diff
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|
531 return handler(tool, state) |
166
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Add inventory interactions
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diff
changeset
|
532 elif inverse_handler is not None: |
167
5845a3ed4dad
Inventory interaction can (surprisingly) affect the inventory
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parents:
166
diff
changeset
|
533 return inverse_handler(self, state) |
166
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Add inventory interactions
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diff
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|
534 else: |
167
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Inventory interaction can (surprisingly) affect the inventory
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parents:
166
diff
changeset
|
535 return self.interact_default(tool, state) |
166
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Add inventory interactions
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parents:
161
diff
changeset
|
536 |
167
5845a3ed4dad
Inventory interaction can (surprisingly) affect the inventory
Neil Muller <neil@dip.sun.ac.za>
parents:
166
diff
changeset
|
537 def interact_default(self, tool, state): |
166
0db92b3b5833
Add inventory interactions
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diff
changeset
|
538 return Result("That doesn't do anything useful") |
0db92b3b5833
Add inventory interactions
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diff
changeset
|
539 |
191 | 540 |
541 class CloneableItem(Item): | |
542 _counter = 0 | |
543 | |
252
dfc89bc64fdb
Start of walkthrough "unit test" and associated fixes and tweaks.
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241
diff
changeset
|
544 @classmethod |
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diff
changeset
|
545 def _get_new_id(cls): |
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diff
changeset
|
546 cls._counter += 1 |
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Start of walkthrough "unit test" and associated fixes and tweaks.
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diff
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|
547 return cls._counter - 1 |
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diff
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|
548 |
191 | 549 def __init__(self, name): |
252
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|
550 my_count = self._get_new_id() |
191 | 551 super(CloneableItem, self).__init__("%s.%s" % (name, my_count)) |
193
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|
552 self.tool_name = name |
226 | 553 if self.TOOL_NAME is not None: |
554 self.tool_name = self.TOOL_NAME |