Mercurial > pyntnclick
annotate gamelib/state.py @ 124:97322b78d1c1
Minor style cleanups
author | Neil Muller <neil@dip.sun.ac.za> |
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date | Tue, 24 Aug 2010 17:55:47 +0200 |
parents | 48d24a48d0ce |
children | d3ca34a664fd |
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 |
124 | 13 |
78 | 14 class Result(object): |
15 """Result of interacting with a thing""" | |
16 | |
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17 def __init__(self, message=None, soundfile=None): |
78 | 18 self.message = message |
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19 self.sound = None |
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20 if soundfile: |
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21 self.sound = get_sound(soundfile) |
78 | 22 |
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23 |
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24 def initial_state(): |
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25 """Load the initial state.""" |
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26 state = State() |
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27 state.load_scenes("cryo") |
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28 state.load_scenes("bridge") |
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29 #state.load_scenes("mess") |
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30 #state.load_scenes("engine") |
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31 #state.load_scenes("machine") |
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32 #state.load_scenes("map") |
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33 state.set_current_scene("cryo") |
120 | 34 state.set_do_enter_leave() |
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35 return state |
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36 |
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37 |
7
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38 class State(object): |
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39 """Complete game state. |
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40 |
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41 Game state consists of: |
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42 |
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43 * items |
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44 * scenes |
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45 """ |
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46 |
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47 def __init__(self): |
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48 # map of scene name -> Scene object |
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49 self.scenes = {} |
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50 # map of detail view name -> DetailView object |
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51 self.detail_views = {} |
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52 # map of item name -> Item object |
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53 self.items = {} |
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54 # list of item objects in inventory |
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55 self.inventory = [] |
73 | 56 # currently selected tool (item) |
57 self.tool = None | |
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58 # current scene |
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59 self.current_scene = None |
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60 # current detail view |
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61 self.current_detail = None |
120 | 62 # scene we came from, for enter and leave processing |
63 self.previous_scene = None | |
64 # scene transion helpers | |
65 self.do_check = None | |
66 self.old_pos = None | |
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67 |
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68 def add_scene(self, scene): |
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69 self.scenes[scene.name] = scene |
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70 |
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71 def add_detail_view(self, detail_view): |
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72 self.detail_views[detail_view.name] = detail_view |
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73 |
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74 def add_item(self, item): |
35 | 75 self.items[item.name] = item |
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76 |
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77 def load_scenes(self, modname): |
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78 mod = __import__("gamelib.scenes.%s" % (modname,), fromlist=[modname]) |
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79 for scene_cls in mod.SCENES: |
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80 self.add_scene(scene_cls(self)) |
119
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81 if hasattr(mod, 'DETAIL_VIEWS'): |
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82 for scene_cls in mod.DETAIL_VIEWS: |
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83 self.add_detail_view(scene_cls(self)) |
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84 |
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85 def set_current_scene(self, name): |
120 | 86 old_scene = self.current_scene |
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87 self.current_scene = self.scenes[name] |
120 | 88 if old_scene and old_scene != self.current_scene: |
89 self.previous_scene = old_scene | |
90 self.set_do_enter_leave() | |
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91 |
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92 def set_current_detail(self, name): |
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93 if name is None: |
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94 self.current_detail = None |
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95 else: |
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96 self.current_detail = self.detail_views[name] |
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97 return self.current_detail.SIZE |
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98 |
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99 def add_inventory_item(self, name): |
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100 self.inventory.append(self.items[name]) |
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101 |
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102 def remove_inventory_item(self, name): |
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103 self.inventory.remove(self.items[name]) |
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104 # Unselect tool if it's removed |
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105 if self.tool == self.items[name]: |
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106 self.set_tool(None) |
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107 |
73 | 108 def set_tool(self, item): |
109 self.tool = item | |
110 | |
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111 def draw(self, surface): |
120 | 112 if self.do_check and self.previous_scene and self.do_check == constants.LEAVE: |
113 # We still need to handle leave events, so still display the scene | |
114 self.previous_scene.draw(surface) | |
115 else: | |
116 self.current_scene.draw(surface) | |
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117 |
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118 def draw_detail(self, surface): |
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119 self.current_detail.draw(surface) |
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120 |
73 | 121 def interact(self, pos): |
78 | 122 return self.current_scene.interact(self.tool, pos) |
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123 |
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124 def interact_detail(self, pos): |
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125 return self.current_detail.interact(self.tool, pos) |
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126 |
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127 def animate(self): |
120 | 128 if not self.do_check: |
129 return self.current_scene.animate() | |
130 | |
131 def check_enter_leave(self): | |
132 if not self.do_check: | |
133 return None | |
134 if self.do_check == constants.LEAVE: | |
135 self.do_check = constants.ENTER | |
136 if self.previous_scene: | |
137 return self.previous_scene.leave() | |
138 return None | |
139 elif self.do_check == constants.ENTER: | |
140 self.do_check = None | |
141 # Fix descriptions, etc. | |
142 if self.old_pos: | |
143 self.current_scene.mouse_move(self.tool, self.old_pos) | |
144 return self.current_scene.enter() | |
145 raise RuntimeError('invalid do_check value %s' % self.do_check) | |
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146 |
73 | 147 def mouse_move(self, pos): |
148 self.current_scene.mouse_move(self.tool, pos) | |
120 | 149 # So we can do sensible things on enter and leave |
150 self.old_pos = pos | |
151 | |
152 def set_do_enter_leave(self): | |
153 """Flag that we need to run the enter loop""" | |
154 self.do_check = constants.LEAVE | |
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155 |
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156 def mouse_move_detail(self, pos): |
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157 self.current_detail.mouse_move(self.tool, pos) |
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158 |
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159 |
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160 class StatefulGizmo(object): |
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161 |
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162 # initial data (optional, defaults to none) |
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163 INITIAL_DATA = None |
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164 |
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165 def __init__(self): |
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166 self.data = {} |
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167 if self.INITIAL_DATA: |
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168 self.data.update(self.INITIAL_DATA) |
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169 |
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170 def set_data(self, key, value): |
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171 self.data[key] = value |
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172 |
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173 def get_data(self, key): |
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174 return self.data.get(key, None) |
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175 |
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176 |
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177 class Scene(StatefulGizmo): |
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178 """Base class for scenes.""" |
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179 |
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180 # sub-folder to look for resources in |
22 | 181 FOLDER = None |
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182 |
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183 # name of background image resource |
22 | 184 BACKGROUND = None |
185 | |
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186 # name of scene (optional, defaults to folder) |
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187 NAME = None |
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188 |
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189 def __init__(self, state): |
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190 StatefulGizmo.__init__(self) |
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191 # scene name |
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192 self.name = self.NAME if self.NAME is not None else self.FOLDER |
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193 # link back to state object |
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194 self.state = state |
22 | 195 # map of thing names -> Thing objects |
196 self.things = {} | |
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197 self._background = get_image(self.FOLDER, self.BACKGROUND) |
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198 self._current_thing = None |
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199 self._current_description = None |
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200 |
35 | 201 def add_item(self, item): |
202 self.state.add_item(item) | |
203 | |
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204 def add_thing(self, thing): |
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205 self.things[thing.name] = thing |
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206 thing.set_scene(self) |
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207 |
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208 def remove_thing(self, thing): |
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209 del self.things[thing.name] |
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210 |
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211 def _make_description(self, text): |
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212 if text is None: |
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213 return None |
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214 label = BoomLabel(text) |
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215 label.set_margin(5) |
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216 label.border_width = 1 |
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217 label.border_color = (0, 0, 0) |
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218 label.bg_color = (127, 127, 127) |
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219 label.fg_color = (0, 0, 0) |
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220 return label |
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221 |
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222 def draw_description(self, surface): |
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223 if self._current_description is not None: |
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224 sub = surface.subsurface( |
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225 Rect(5, 5, *self._current_description.size)) |
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226 self._current_description.draw_all(sub) |
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227 |
22 | 228 def draw_background(self, surface): |
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229 surface.blit(self._background, (0, 0), None) |
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230 |
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231 def draw_things(self, surface): |
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232 for thing in self.things.itervalues(): |
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233 thing.draw(surface) |
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234 |
22 | 235 def draw(self, surface): |
236 self.draw_background(surface) | |
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237 self.draw_things(surface) |
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238 self.draw_description(surface) |
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239 |
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240 def interact(self, item, pos): |
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241 """Interact with a particular position. |
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242 |
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243 Item may be an item in the list of items or None for the hand. |
78 | 244 |
245 Returns a Result object to provide feedback to the player. | |
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246 """ |
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247 for thing in self.things.itervalues(): |
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248 if thing.contains(pos): |
78 | 249 result = thing.interact(item) |
250 if result: | |
251 if self._current_thing: | |
252 # Also update descriptions if needed | |
253 self._current_description = self._make_description( | |
254 self._current_thing.get_description()) | |
255 return result | |
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256 |
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257 def animate(self): |
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258 """Animate all the things in the scene. |
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259 |
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260 Return true if any of them need to queue a redraw""" |
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261 result = False |
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262 for thing in self.things.itervalues(): |
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263 if thing.animate(): |
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264 result = True |
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265 return result |
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266 |
120 | 267 def enter(self): |
268 return None | |
269 | |
270 def leave(self): | |
271 self._current_description = None | |
272 return None | |
273 | |
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274 def mouse_move(self, item, pos): |
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275 """Call to check whether the cursor has entered / exited a thing. |
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276 |
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277 Item may be an item in the list of items or None for the hand. |
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278 """ |
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279 if self._current_thing is not None: |
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280 if self._current_thing.contains(pos): |
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281 return |
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282 else: |
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283 self._current_thing.leave() |
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284 self._current_thing = None |
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285 self._current_description = None |
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286 for thing in self.things.itervalues(): |
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287 if thing.contains(pos): |
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288 thing.enter(item) |
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289 self._current_thing = thing |
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290 self._current_description = self._make_description( |
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291 thing.get_description()) |
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292 break |
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293 |
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294 |
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295 class Interact(object): |
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296 |
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297 def __init__(self, image, rect, interact_rect): |
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298 self.image = image |
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299 self.rect = rect |
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300 self.interact_rect = interact_rect |
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301 |
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302 def set_thing(self, thing): |
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303 pass |
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304 |
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305 def draw(self, surface): |
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306 if self.image is not None: |
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307 surface.blit(self.image, self.rect, None) |
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308 |
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309 def animate(self): |
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310 return False |
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311 |
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312 |
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313 class InteractNoImage(Interact): |
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314 |
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315 def __init__(self, x, y, w, h): |
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316 super(InteractNoImage, self).__init__(None, None, Rect(x, y, w, h)) |
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317 |
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318 |
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319 class InteractRectUnion(Interact): |
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320 |
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321 def __init__(self, rect_list): |
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322 # pygame.rect.Rect.unionall should do this, but is broken |
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323 # in some pygame versions (including 1.8, it appears) |
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324 rect_list = [Rect(x) for x in rect_list] |
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325 union_rect = rect_list[0] |
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326 for rect in rect_list[1:]: |
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327 union_rect = union_rect.union(rect) |
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328 super(InteractRectUnion, self).__init__(None, None, union_rect) |
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329 self.interact_rect = rect_list |
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330 |
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331 |
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332 class InteractImage(Interact): |
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333 |
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334 def __init__(self, x, y, image_name): |
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335 super(InteractImage, self).__init__(None, None, None) |
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336 self._pos = (x, y) |
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337 self._image_name = image_name |
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338 |
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339 def set_thing(self, thing): |
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340 self.image = get_image(thing.folder, self._image_name) |
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341 self.rect = Rect(self._pos, self.image.get_size()) |
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342 self.interact_rect = self.rect |
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343 |
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344 |
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345 class InteractAnimated(Interact): |
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346 """Interactive with an animation rather than an image""" |
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347 |
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348 # FIXME: Assumes all images are the same size |
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349 # anim_seq - sequence of image names |
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350 # delay - number of frames to wait between changing images |
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351 |
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352 def __init__(self, x, y, anim_seq, delay): |
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353 self._pos = (x, y) |
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354 self._anim_pos = 0 |
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355 self._names = anim_seq |
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356 self._frame_count = 0 |
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357 self._anim_seq = None |
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358 self._delay = delay |
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359 |
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360 def set_thing(self, thing): |
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361 self._anim_seq = [get_image(thing.folder, x) for x in self._names] |
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362 self.image = self._anim_seq[0] |
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363 self.rect = Rect(self._pos, self.image.get_size()) |
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364 self.interact_rect = self.rect |
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365 |
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366 def animate(self): |
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367 if self._anim_seq: |
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368 self._frame_count += 1 |
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369 if self._frame_count > self._delay: |
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370 self._frame_count = 0 |
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371 self._anim_pos += 1 |
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372 if self._anim_pos >= len(self._anim_seq): |
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373 self._anim_pos = 0 |
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374 self.image = self._anim_seq[self._anim_pos] |
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375 # queue redraw |
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376 return True |
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377 return False |
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378 |
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379 |
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380 class Thing(StatefulGizmo): |
22 | 381 """Base class for things in a scene that you can interact with.""" |
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382 |
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383 # name of thing |
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384 NAME = None |
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385 |
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386 # sub-folder to look for resources in (defaults to scenes folder) |
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387 FOLDER = None |
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388 |
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389 # list of Interact objects |
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390 INTERACTS = {} |
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391 |
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392 # name first interact |
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393 INITIAL = None |
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394 |
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395 # Interact rectangle hi-light color (for debugging) |
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396 # (set to None to turn off) |
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397 if constants.DEBUG: |
75 | 398 _interact_hilight_color = Color('red') |
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399 else: |
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400 _interact_hilight_color = None |
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401 |
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402 def __init__(self): |
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403 StatefulGizmo.__init__(self) |
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404 # name of the thing |
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405 self.name = self.NAME |
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406 # folder for resource (None is overridden by scene folder) |
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407 self.folder = self.FOLDER |
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408 # interacts |
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409 self.interacts = self.INTERACTS |
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410 # these are set by set_scene |
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411 self.scene = None |
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412 self.state = None |
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413 self.current_interact = None |
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414 self.rect = None |
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415 # TODO: add masks |
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416 |
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417 def set_scene(self, scene): |
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418 assert self.scene is None |
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419 self.scene = scene |
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420 if self.folder is None: |
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421 self.folder = scene.FOLDER |
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422 self.state = scene.state |
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423 for interact in self.interacts.itervalues(): |
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424 interact.set_thing(self) |
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425 self.set_interact(self.INITIAL) |
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426 |
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427 def set_interact(self, name): |
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428 self.current_interact = self.interacts[name] |
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429 self.rect = self.current_interact.interact_rect |
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430 assert self.rect is not None, name |
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431 |
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432 def contains(self, pos): |
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433 if hasattr(self.rect, 'collidepoint'): |
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434 return self.rect.collidepoint(pos) |
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435 else: |
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436 # FIXME: add sanity check |
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437 for rect in list(self.rect): |
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438 if rect.collidepoint(pos): |
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439 return True |
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440 return False |
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441 |
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442 def get_description(self): |
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443 return None |
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Neil Muller <neil@dip.sun.ac.za>
parents:
56
diff
changeset
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444 |
56
75bf3d3689e9
Refactor thing interactivity and add "fake" bridge scene.
Jeremy Thurgood <firxen@gmail.com>
parents:
55
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445 def is_interactive(self): |
75bf3d3689e9
Refactor thing interactivity and add "fake" bridge scene.
Jeremy Thurgood <firxen@gmail.com>
parents:
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446 return True |
75bf3d3689e9
Refactor thing interactivity and add "fake" bridge scene.
Jeremy Thurgood <firxen@gmail.com>
parents:
55
diff
changeset
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447 |
71
99c5506de7ea
Start of interact handling.
Simon Cross <hodgestar+bzr@gmail.com>
parents:
68
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changeset
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448 def enter(self, item): |
99c5506de7ea
Start of interact handling.
Simon Cross <hodgestar+bzr@gmail.com>
parents:
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449 """Called when the cursor enters the Thing.""" |
101
19d784fd3918
Remove debugging prints (descriptions now provide pretty much the same feedback anyway).
Simon Cross <simon@simonx>
parents:
94
diff
changeset
|
450 pass |
71
99c5506de7ea
Start of interact handling.
Simon Cross <hodgestar+bzr@gmail.com>
parents:
68
diff
changeset
|
451 |
99c5506de7ea
Start of interact handling.
Simon Cross <hodgestar+bzr@gmail.com>
parents:
68
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changeset
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452 def leave(self): |
99c5506de7ea
Start of interact handling.
Simon Cross <hodgestar+bzr@gmail.com>
parents:
68
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changeset
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453 """Called when the cursr leaves the Thing.""" |
101
19d784fd3918
Remove debugging prints (descriptions now provide pretty much the same feedback anyway).
Simon Cross <simon@simonx>
parents:
94
diff
changeset
|
454 pass |
71
99c5506de7ea
Start of interact handling.
Simon Cross <hodgestar+bzr@gmail.com>
parents:
68
diff
changeset
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455 |
22 | 456 def interact(self, item): |
56
75bf3d3689e9
Refactor thing interactivity and add "fake" bridge scene.
Jeremy Thurgood <firxen@gmail.com>
parents:
55
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changeset
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457 if not self.is_interactive(): |
75bf3d3689e9
Refactor thing interactivity and add "fake" bridge scene.
Jeremy Thurgood <firxen@gmail.com>
parents:
55
diff
changeset
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458 return |
41
ad6f56bfa8b7
Cryo door, titanium leg and some interaction prototypes.
Jeremy Thurgood <firxen@gmail.com>
parents:
39
diff
changeset
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459 if item is None: |
78 | 460 return self.interact_without() |
41
ad6f56bfa8b7
Cryo door, titanium leg and some interaction prototypes.
Jeremy Thurgood <firxen@gmail.com>
parents:
39
diff
changeset
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461 else: |
ad6f56bfa8b7
Cryo door, titanium leg and some interaction prototypes.
Jeremy Thurgood <firxen@gmail.com>
parents:
39
diff
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462 handler = getattr(self, 'interact_with_' + item.name, None) |
ad6f56bfa8b7
Cryo door, titanium leg and some interaction prototypes.
Jeremy Thurgood <firxen@gmail.com>
parents:
39
diff
changeset
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463 if handler is not None: |
78 | 464 return handler(item) |
41
ad6f56bfa8b7
Cryo door, titanium leg and some interaction prototypes.
Jeremy Thurgood <firxen@gmail.com>
parents:
39
diff
changeset
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465 else: |
78 | 466 return self.interact_default(item) |
41
ad6f56bfa8b7
Cryo door, titanium leg and some interaction prototypes.
Jeremy Thurgood <firxen@gmail.com>
parents:
39
diff
changeset
|
467 |
105
65976205fc2d
Rough Stab at basic animation support
Neil Muller <neil@dip.sun.ac.za>
parents:
101
diff
changeset
|
468 def animate(self): |
65976205fc2d
Rough Stab at basic animation support
Neil Muller <neil@dip.sun.ac.za>
parents:
101
diff
changeset
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469 return self.current_interact.animate() |
65976205fc2d
Rough Stab at basic animation support
Neil Muller <neil@dip.sun.ac.za>
parents:
101
diff
changeset
|
470 |
41
ad6f56bfa8b7
Cryo door, titanium leg and some interaction prototypes.
Jeremy Thurgood <firxen@gmail.com>
parents:
39
diff
changeset
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471 def interact_without(self): |
78 | 472 return self.interact_default(None) |
41
ad6f56bfa8b7
Cryo door, titanium leg and some interaction prototypes.
Jeremy Thurgood <firxen@gmail.com>
parents:
39
diff
changeset
|
473 |
ad6f56bfa8b7
Cryo door, titanium leg and some interaction prototypes.
Jeremy Thurgood <firxen@gmail.com>
parents:
39
diff
changeset
|
474 def interact_default(self, item): |
78 | 475 return Result("It doesn't work.") |
22 | 476 |
23
1e90a3e4618e
Add code for blitting Scene.
Simon Cross <hodgestar+bzr@gmail.com>
parents:
22
diff
changeset
|
477 def draw(self, surface): |
86
593bddfacf18
Refactor Things a bit to render images.
Simon Cross <hodgestar+bzr@gmail.com>
parents:
79
diff
changeset
|
478 self.current_interact.draw(surface) |
68
158a13a48d48
Show interact rectangles when constants.DEBUG is True.
Simon Cross <hodgestar+bzr@gmail.com>
parents:
65
diff
changeset
|
479 if self._interact_hilight_color is not None: |
94
ce23fad8ecb3
More complex shaped interactables
Neil Muller <neil@dip.sun.ac.za>
parents:
93
diff
changeset
|
480 if hasattr(self.rect, 'collidepoint'): |
ce23fad8ecb3
More complex shaped interactables
Neil Muller <neil@dip.sun.ac.za>
parents:
93
diff
changeset
|
481 frame_rect(surface, self._interact_hilight_color, |
ce23fad8ecb3
More complex shaped interactables
Neil Muller <neil@dip.sun.ac.za>
parents:
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diff
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482 self.rect.inflate(1, 1), 1) |
ce23fad8ecb3
More complex shaped interactables
Neil Muller <neil@dip.sun.ac.za>
parents:
93
diff
changeset
|
483 else: |
ce23fad8ecb3
More complex shaped interactables
Neil Muller <neil@dip.sun.ac.za>
parents:
93
diff
changeset
|
484 for rect in self.rect: |
ce23fad8ecb3
More complex shaped interactables
Neil Muller <neil@dip.sun.ac.za>
parents:
93
diff
changeset
|
485 frame_rect(surface, self._interact_hilight_color, |
ce23fad8ecb3
More complex shaped interactables
Neil Muller <neil@dip.sun.ac.za>
parents:
93
diff
changeset
|
486 rect.inflate(1, 1), 1) |
23
1e90a3e4618e
Add code for blitting Scene.
Simon Cross <hodgestar+bzr@gmail.com>
parents:
22
diff
changeset
|
487 |
22 | 488 |
489 class Item(object): | |
490 """Base class for inventory items.""" | |
491 | |
35 | 492 # image for inventory |
493 INVENTORY_IMAGE = None | |
32
18cb1af411ef
Add helper for adding items. Give items names. Make things take a rectangle.
Simon Cross <hodgestar+bzr@gmail.com>
parents:
30
diff
changeset
|
494 |
35 | 495 def __init__(self, name): |
496 self.name = name | |
497 self.inventory_image = get_image('items', self.INVENTORY_IMAGE) | |
32
18cb1af411ef
Add helper for adding items. Give items names. Make things take a rectangle.
Simon Cross <hodgestar+bzr@gmail.com>
parents:
30
diff
changeset
|
498 # TODO: needs cursor |
22 | 499 |
34
e5c043aeed65
Inventory and items. And stuff.
Jeremy Thurgood <firxen@gmail.com>
parents:
33
diff
changeset
|
500 def get_inventory_image(self): |
e5c043aeed65
Inventory and items. And stuff.
Jeremy Thurgood <firxen@gmail.com>
parents:
33
diff
changeset
|
501 return self.inventory_image |
e5c043aeed65
Inventory and items. And stuff.
Jeremy Thurgood <firxen@gmail.com>
parents:
33
diff
changeset
|
502 |