Mercurial > pyntnclick
annotate gamelib/state.py @ 465:03dcb25d8370
Slightly prettier Close button labels.
author | Simon Cross <hodgestar+bzr@gmail.com> |
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date | Sun, 29 Aug 2010 01:36:04 +0200 |
parents | 3dab4984cbd7 |
children | af2a23b9787d |
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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, get_font |
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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.rect import Rect |
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7 from pygame.color import Color |
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8 |
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9 import constants |
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10 from sound import get_sound |
11 | 11 |
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12 # override the initial scene to for debugging |
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13 DEBUG_SCENE = None |
124 | 14 |
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15 # whether to show debugging rects |
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16 DEBUG_RECTS = False |
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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, close_detail=False, end_game=False): |
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 |
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28 self.close_detail = close_detail |
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29 self.end_game = end_game |
78 | 30 |
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31 def process(self, scene_widget): |
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32 """Helper function to do the right thing with a result object""" |
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33 if self.sound: |
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34 self.sound.play() |
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35 if self.message: |
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36 scene_widget.show_message(self.message, self.style) |
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37 if self.detail_view: |
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38 scene_widget.show_detail(self.detail_view) |
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39 if self.close_detail and hasattr(scene_widget, 'parent') and hasattr(scene_widget.parent, 'clear_detail'): |
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40 scene_widget.parent.clear_detail() |
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41 if self.end_game: |
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42 scene_widget.end_game() |
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43 |
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44 |
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45 def handle_result(result, scene_widget): |
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46 """Handle dealing with result or result sequences""" |
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47 if result: |
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48 if hasattr(result, 'process'): |
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49 result.process(scene_widget) |
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50 else: |
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51 for res in result: |
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52 if res: |
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53 # List may contain None's |
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54 res.process(scene_widget) |
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55 |
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56 |
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57 def initial_state(): |
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58 """Load the initial state.""" |
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59 state = State() |
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60 state.load_scenes("cryo") |
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61 state.load_scenes("bridge") |
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62 state.load_scenes("mess") |
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63 state.load_scenes("engine") |
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64 state.load_scenes("machine") |
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65 state.load_scenes("crew_quarters") |
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66 state.load_scenes("map") |
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67 state.load_scenes("manual") |
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68 state.load_scenes("won") |
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69 initial_scene = "cryo" if DEBUG_SCENE is None else DEBUG_SCENE |
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70 state.set_current_scene(initial_scene) |
120 | 71 state.set_do_enter_leave() |
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72 return state |
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73 |
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74 |
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75 class State(object): |
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76 """Complete game state. |
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77 |
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78 Game state consists of: |
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79 |
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80 * items |
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81 * scenes |
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82 """ |
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83 |
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84 def __init__(self): |
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85 # map of scene name -> Scene object |
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86 self.scenes = {} |
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87 # map of detail view name -> DetailView object |
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88 self.detail_views = {} |
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89 # map of item name -> Item object |
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90 self.items = {} |
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91 # list of item objects in inventory |
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92 self.inventory = [] |
73 | 93 # currently selected tool (item) |
94 self.tool = None | |
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95 # current scene |
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96 self.current_scene = None |
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97 # current detail view |
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98 self.current_detail = None |
120 | 99 # scene we came from, for enter and leave processing |
100 self.previous_scene = None | |
101 # scene transion helpers | |
102 self.do_check = None | |
103 self.old_pos = None | |
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104 # current thing |
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105 self.current_thing = None |
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106 self.highlight_override = False |
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107 |
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108 def add_scene(self, scene): |
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109 self.scenes[scene.name] = scene |
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110 |
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111 def add_detail_view(self, detail_view): |
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112 self.detail_views[detail_view.name] = detail_view |
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113 |
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114 def add_item(self, item): |
35 | 115 self.items[item.name] = item |
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116 |
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117 def load_scenes(self, modname): |
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118 mod = __import__("gamelib.scenes.%s" % (modname,), fromlist=[modname]) |
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119 for scene_cls in mod.SCENES: |
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120 self.add_scene(scene_cls(self)) |
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121 if hasattr(mod, 'DETAIL_VIEWS'): |
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122 for scene_cls in mod.DETAIL_VIEWS: |
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123 self.add_detail_view(scene_cls(self)) |
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124 |
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125 def set_current_scene(self, name): |
120 | 126 old_scene = self.current_scene |
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127 self.current_scene = self.scenes[name] |
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128 self.current_thing = None |
120 | 129 if old_scene and old_scene != self.current_scene: |
130 self.previous_scene = old_scene | |
131 self.set_do_enter_leave() | |
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132 |
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133 def set_current_detail(self, name): |
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134 self.current_thing = None |
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135 if name is None: |
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136 self.current_detail = None |
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137 else: |
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138 self.current_detail = self.detail_views[name] |
125
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139 return self.current_detail.get_detail_size() |
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140 |
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141 def add_inventory_item(self, name): |
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142 self.inventory.append(self.items[name]) |
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143 |
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144 def is_in_inventory(self, name): |
340
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145 if name in self.items: |
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146 return self.items[name] in self.inventory |
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147 return False |
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148 |
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149 def remove_inventory_item(self, name): |
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150 self.inventory.remove(self.items[name]) |
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151 # Unselect tool if it's removed |
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152 if self.tool == self.items[name]: |
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153 self.set_tool(None) |
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154 |
305
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155 def replace_inventory_item(self, old_item_name, new_item_name): |
167
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156 """Try to replace an item in the inventory with a new one""" |
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157 try: |
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158 index = self.inventory.index(self.items[old_item_name]) |
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159 self.inventory[index] = self.items[new_item_name] |
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160 if self.tool == self.items[old_item_name]: |
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161 self.set_tool(self.items[new_item_name]) |
167
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162 except ValueError: |
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163 return False |
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164 return True |
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165 |
73 | 166 def set_tool(self, item): |
167 self.tool = item | |
168 | |
187
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169 def draw(self, surface, screen): |
120 | 170 if self.do_check and self.previous_scene and self.do_check == constants.LEAVE: |
171 # We still need to handle leave events, so still display the scene | |
187
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172 self.previous_scene.draw(surface, screen) |
120 | 173 else: |
187
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174 self.current_scene.draw(surface, screen) |
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175 |
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176 def draw_detail(self, surface, screen): |
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177 self.current_detail.draw(surface, screen) |
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178 |
73 | 179 def interact(self, pos): |
78 | 180 return self.current_scene.interact(self.tool, pos) |
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181 |
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182 def interact_detail(self, pos): |
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183 return self.current_detail.interact(self.tool, pos) |
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184 |
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185 def cancel_doodah(self, screen): |
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186 if self.tool: |
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187 self.set_tool(None) |
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188 elif self.current_detail: |
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189 screen.state_widget.clear_detail() |
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190 |
314
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191 def do_enter_detail(self): |
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192 if self.current_detail: |
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193 self.current_detail.enter() |
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194 |
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195 def do_leave_detail(self): |
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196 if self.current_detail: |
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197 self.current_detail.leave() |
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198 |
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199 def animate(self): |
120 | 200 if not self.do_check: |
201 return self.current_scene.animate() | |
202 | |
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203 def check_enter_leave(self, screen): |
120 | 204 if not self.do_check: |
205 return None | |
206 if self.do_check == constants.LEAVE: | |
207 self.do_check = constants.ENTER | |
208 if self.previous_scene: | |
209 return self.previous_scene.leave() | |
210 return None | |
211 elif self.do_check == constants.ENTER: | |
212 self.do_check = None | |
213 # Fix descriptions, etc. | |
214 if self.old_pos: | |
324
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215 self.current_scene.update_current_thing(self.old_pos) |
120 | 216 return self.current_scene.enter() |
217 raise RuntimeError('invalid do_check value %s' % self.do_check) | |
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218 |
324
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219 def mouse_move(self, pos): |
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220 self.current_scene.mouse_move(pos) |
120 | 221 # So we can do sensible things on enter and leave |
222 self.old_pos = pos | |
223 | |
224 def set_do_enter_leave(self): | |
225 """Flag that we need to run the enter loop""" | |
226 self.do_check = constants.LEAVE | |
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227 |
324
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228 def mouse_move_detail(self, pos): |
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229 self.current_detail.mouse_move(pos) |
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230 |
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231 |
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232 class StatefulGizmo(object): |
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233 |
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234 # initial data (optional, defaults to none) |
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235 INITIAL_DATA = None |
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236 |
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237 def __init__(self): |
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238 self.data = {} |
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239 if self.INITIAL_DATA: |
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240 self.data.update(self.INITIAL_DATA) |
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241 |
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242 def set_data(self, key, value): |
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243 self.data[key] = value |
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244 |
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245 def get_data(self, key): |
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246 return self.data.get(key, None) |
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247 |
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248 |
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249 class Scene(StatefulGizmo): |
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250 """Base class for scenes.""" |
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251 |
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252 # sub-folder to look for resources in |
22 | 253 FOLDER = None |
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254 |
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255 # name of background image resource |
22 | 256 BACKGROUND = None |
257 | |
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258 # name of scene (optional, defaults to folder) |
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259 NAME = None |
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260 |
278 | 261 # Offset of the background image |
262 OFFSET = (0, 0) | |
263 | |
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264 # size (for detail views) |
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265 SIZE = constants.SCENE_SIZE |
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266 |
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267 def __init__(self, state): |
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268 StatefulGizmo.__init__(self) |
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269 # scene name |
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270 self.name = self.NAME if self.NAME is not None else self.FOLDER |
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271 # link back to state object |
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272 self.state = state |
22 | 273 # map of thing names -> Thing objects |
274 self.things = {} | |
130
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275 if self.BACKGROUND is not None: |
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276 self._background = get_image(self.FOLDER, self.BACKGROUND) |
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277 else: |
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278 self._background = None |
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279 |
35 | 280 def add_item(self, item): |
281 self.state.add_item(item) | |
282 | |
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283 def add_thing(self, thing): |
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284 self.things[thing.name] = thing |
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285 thing.set_scene(self) |
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286 |
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287 def remove_thing(self, thing): |
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288 del self.things[thing.name] |
313
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289 self.leave() |
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290 |
319
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291 def _get_description(self): |
324
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292 text = (self.state.current_thing and |
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293 self.state.current_thing.get_description()) |
76
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294 if text is None: |
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295 return None |
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296 label = BoomLabel(text) |
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297 font = get_font(15, 'VeraBd.ttf') |
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298 label.set_margin(5) |
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299 label.border_width = 1 |
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300 label.border_color = (0, 0, 0) |
326
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301 label.bg_color = Color(210, 210, 210, 255) |
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302 label.fg_color = (0, 0, 0) |
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303 return label |
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304 |
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305 def draw_description(self, surface, screen): |
319
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306 description = self._get_description() |
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307 if description is not None: |
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308 w, h = description.size |
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309 sub = screen.get_root().surface.subsurface( |
326
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310 Rect(400-w/2, 5, w, h)) |
319
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311 description.draw_all(sub) |
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312 |
22 | 313 def draw_background(self, surface): |
130
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314 if self._background is not None: |
278 | 315 surface.blit(self._background, self.OFFSET, None) |
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316 else: |
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317 surface.fill((200, 200, 200)) |
18
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318 |
23
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319 def draw_things(self, surface): |
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320 for thing in self.things.itervalues(): |
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321 thing.draw(surface) |
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322 |
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323 def draw(self, surface, screen): |
22 | 324 self.draw_background(surface) |
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325 self.draw_things(surface) |
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326 self.draw_description(surface, screen) |
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327 |
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328 def interact(self, item, pos): |
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329 """Interact with a particular position. |
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330 |
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331 Item may be an item in the list of items or None for the hand. |
78 | 332 |
333 Returns a Result object to provide feedback to the player. | |
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334 """ |
324
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335 if self.state.current_thing is not None: |
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336 return self.state.current_thing.interact(item) |
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337 |
105
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338 def animate(self): |
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339 """Animate all the things in the scene. |
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340 |
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341 Return true if any of them need to queue a redraw""" |
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342 result = False |
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343 for thing in self.things.itervalues(): |
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344 if thing.animate(): |
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345 result = True |
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346 return result |
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347 |
120 | 348 def enter(self): |
349 return None | |
350 | |
351 def leave(self): | |
352 return None | |
353 | |
324
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354 def update_current_thing(self, pos): |
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355 if self.state.current_thing is not None: |
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356 if not self.state.current_thing.contains(pos): |
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357 self.state.current_thing.leave() |
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358 self.state.current_thing = None |
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359 for thing in self.things.itervalues(): |
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360 if thing.contains(pos): |
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361 thing.enter(self.state.tool) |
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362 self.state.current_thing = thing |
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363 break |
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364 |
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365 def mouse_move(self, pos): |
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366 """Call to check whether the cursor has entered / exited a thing. |
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367 |
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368 Item may be an item in the list of items or None for the hand. |
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369 """ |
324
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370 self.update_current_thing(pos) |
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371 |
125
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372 def get_detail_size(self): |
127
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373 return self._background.get_size() |
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374 |
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375 |
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376 class Thing(StatefulGizmo): |
22 | 377 """Base class for things in a scene that you can interact with.""" |
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378 |
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379 # name of thing |
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380 NAME = None |
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381 |
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382 # sub-folder to look for resources in (defaults to scenes folder) |
41
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383 FOLDER = None |
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384 |
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385 # list of Interact objects |
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386 INTERACTS = {} |
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387 |
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388 # name first interact |
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389 INITIAL = None |
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390 |
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391 # Interact rectangle hi-light color (for debugging) |
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392 # (set to None to turn off) |
282
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393 _interact_hilight_color = Color('red') |
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394 |
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395 def __init__(self): |
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396 StatefulGizmo.__init__(self) |
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397 # name of the thing |
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398 self.name = self.NAME |
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399 # folder for resource (None is overridden by scene folder) |
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400 self.folder = self.FOLDER |
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401 # interacts |
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402 self.interacts = self.INTERACTS |
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403 # these are set by set_scene |
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404 self.scene = None |
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405 self.state = None |
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406 self.current_interact = None |
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407 self.rect = None |
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408 self.orig_rect = None |
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409 |
278 | 410 def _fix_rect(self): |
411 """Fix rects to compensate for scene offset""" | |
280
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412 # Offset logic is to always work with copies, to avoid |
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413 # flying effects from multiple calls to _fix_rect |
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414 # See footwork in draw |
278 | 415 if hasattr(self.rect, 'collidepoint'): |
280
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416 self.rect = self.rect.move(self.scene.OFFSET) |
278 | 417 else: |
280
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418 self.rect = [x.move(self.scene.OFFSET) for x in self.rect] |
278 | 419 |
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420 def set_scene(self, scene): |
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421 assert self.scene is None |
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422 self.scene = scene |
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423 if self.folder is None: |
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424 self.folder = scene.FOLDER |
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425 self.state = scene.state |
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426 for interact in self.interacts.itervalues(): |
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427 interact.set_thing(self) |
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428 self.set_interact(self.INITIAL) |
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429 |
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430 def set_interact(self, name): |
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431 self.current_interact = self.interacts[name] |
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432 self.rect = self.current_interact.interact_rect |
278 | 433 if self.scene: |
434 self._fix_rect() | |
86
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435 assert self.rect is not None, name |
39
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Add an example Thing to cryo scene.
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436 |
94
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437 def contains(self, pos): |
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438 if hasattr(self.rect, 'collidepoint'): |
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439 return self.rect.collidepoint(pos) |
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440 else: |
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441 # FIXME: add sanity check |
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442 for rect in list(self.rect): |
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443 if rect.collidepoint(pos): |
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444 return True |
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445 return False |
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446 |
63
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447 def get_description(self): |
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448 return None |
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449 |
56
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450 def is_interactive(self): |
266
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451 return True |
56
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452 |
71
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453 def enter(self, item): |
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454 """Called when the cursor enters the Thing.""" |
139
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455 pass |
71
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456 |
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457 def leave(self): |
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458 """Called when the cursr leaves the Thing.""" |
139
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459 pass |
71
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460 |
22 | 461 def interact(self, item): |
56
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462 if not self.is_interactive(): |
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463 return |
41
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464 if item is None: |
78 | 465 return self.interact_without() |
41
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466 else: |
193
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467 handler = getattr(self, 'interact_with_' + item.tool_name, None) |
41
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468 if handler is not None: |
78 | 469 return handler(item) |
41
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470 else: |
78 | 471 return self.interact_default(item) |
41
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472 |
105
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473 def animate(self): |
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474 return self.current_interact.animate() |
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475 |
41
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476 def interact_without(self): |
78 | 477 return self.interact_default(None) |
41
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478 |
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479 def interact_default(self, item): |
435 | 480 return None |
22 | 481 |
23
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diff
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482 def draw(self, surface): |
280
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diff
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|
483 old_rect = self.current_interact.rect |
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diff
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|
484 if old_rect: |
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diff
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|
485 self.current_interact.rect = old_rect.move(self.scene.OFFSET) |
86
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|
486 self.current_interact.draw(surface) |
280
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diff
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|
487 self.current_interact.rect = old_rect |
311
00eb7ea2b7ea
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parents:
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diff
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|
488 if DEBUG_RECTS and self._interact_hilight_color: |
94
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489 if hasattr(self.rect, 'collidepoint'): |
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|
490 frame_rect(surface, self._interact_hilight_color, |
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491 self.rect.inflate(1, 1), 1) |
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|
492 else: |
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|
493 for rect in self.rect: |
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|
494 frame_rect(surface, self._interact_hilight_color, |
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|
495 rect.inflate(1, 1), 1) |
23
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Add code for blitting Scene.
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22
diff
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|
496 |
22 | 497 |
498 class Item(object): | |
499 """Base class for inventory items.""" | |
500 | |
35 | 501 # image for inventory |
502 INVENTORY_IMAGE = None | |
32
18cb1af411ef
Add helper for adding items. Give items names. Make things take a rectangle.
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parents:
30
diff
changeset
|
503 |
336
72e4d0c5dfe9
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parents:
331
diff
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|
504 # name for interactions (i.e. def interact_with_<TOOL_NAME>) |
226 | 505 TOOL_NAME = None |
506 | |
336
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Clean-up two old TODOs.
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parents:
331
diff
changeset
|
507 # set to instance of CursorSprite |
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diff
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|
508 CURSOR = None |
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diff
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|
509 |
35 | 510 def __init__(self, name): |
511 self.name = name | |
193
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|
512 self.tool_name = name |
226 | 513 if self.TOOL_NAME is not None: |
514 self.tool_name = self.TOOL_NAME | |
35 | 515 self.inventory_image = get_image('items', self.INVENTORY_IMAGE) |
22 | 516 |
34
e5c043aeed65
Inventory and items. And stuff.
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33
diff
changeset
|
517 def get_inventory_image(self): |
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diff
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|
518 return self.inventory_image |
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Inventory and items. And stuff.
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33
diff
changeset
|
519 |
167
5845a3ed4dad
Inventory interaction can (surprisingly) affect the inventory
Neil Muller <neil@dip.sun.ac.za>
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166
diff
changeset
|
520 def interact(self, tool, state): |
384
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Initial manual implementation.
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diff
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|
521 if tool is None: |
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Initial manual implementation.
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diff
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|
522 return self.interact_without(state) |
166
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Add inventory interactions
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161
diff
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|
523 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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parents:
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diff
changeset
|
524 inverse_handler = getattr(tool, 'interact_with_' + self.tool_name, None) |
166
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Add inventory interactions
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161
diff
changeset
|
525 if handler is not None: |
167
5845a3ed4dad
Inventory interaction can (surprisingly) affect the inventory
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parents:
166
diff
changeset
|
526 return handler(tool, state) |
166
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Add inventory interactions
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161
diff
changeset
|
527 elif inverse_handler is not None: |
167
5845a3ed4dad
Inventory interaction can (surprisingly) affect the inventory
Neil Muller <neil@dip.sun.ac.za>
parents:
166
diff
changeset
|
528 return inverse_handler(self, state) |
166
0db92b3b5833
Add inventory interactions
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parents:
161
diff
changeset
|
529 else: |
167
5845a3ed4dad
Inventory interaction can (surprisingly) affect the inventory
Neil Muller <neil@dip.sun.ac.za>
parents:
166
diff
changeset
|
530 return self.interact_default(tool, state) |
166
0db92b3b5833
Add inventory interactions
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parents:
161
diff
changeset
|
531 |
167
5845a3ed4dad
Inventory interaction can (surprisingly) affect the inventory
Neil Muller <neil@dip.sun.ac.za>
parents:
166
diff
changeset
|
532 def interact_default(self, tool, state): |
166
0db92b3b5833
Add inventory interactions
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parents:
161
diff
changeset
|
533 return Result("That doesn't do anything useful") |
0db92b3b5833
Add inventory interactions
Neil Muller <neil@dip.sun.ac.za>
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161
diff
changeset
|
534 |
191 | 535 |
536 class CloneableItem(Item): | |
537 _counter = 0 | |
538 | |
252
dfc89bc64fdb
Start of walkthrough "unit test" and associated fixes and tweaks.
Jeremy Thurgood <firxen@gmail.com>
parents:
241
diff
changeset
|
539 @classmethod |
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Start of walkthrough "unit test" and associated fixes and tweaks.
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parents:
241
diff
changeset
|
540 def _get_new_id(cls): |
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Start of walkthrough "unit test" and associated fixes and tweaks.
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241
diff
changeset
|
541 cls._counter += 1 |
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Start of walkthrough "unit test" and associated fixes and tweaks.
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parents:
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diff
changeset
|
542 return cls._counter - 1 |
dfc89bc64fdb
Start of walkthrough "unit test" and associated fixes and tweaks.
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parents:
241
diff
changeset
|
543 |
191 | 544 def __init__(self, name): |
252
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diff
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|
545 my_count = self._get_new_id() |
191 | 546 super(CloneableItem, self).__init__("%s.%s" % (name, my_count)) |
193
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CloneableItem tweaks and a usable laser welder. zOMG!
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diff
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|
547 self.tool_name = name |
226 | 548 if self.TOOL_NAME is not None: |
549 self.tool_name = self.TOOL_NAME |