Mercurial > pyntnclick
annotate pyntnclick/state.py @ 567:b84534a1bd2e pyntnclick
Lazily load Result sounds.
| author | Simon Cross <hodgestar+bzr@gmail.com> |
|---|---|
| date | Sat, 11 Feb 2012 15:27:52 +0200 |
| parents | 28f03563f4db |
| children | 1b1ab71535bd |
| 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 |
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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 |
| 551 | 11 from pyntnclick import constants |
| 12 | |
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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, detail_view=None, |
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18 style=None, close_detail=False, end_game=False): |
| 78 | 19 self.message = message |
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20 self.soundfile = soundfile |
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21 self.detail_view = detail_view |
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22 self.style = style |
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23 self.close_detail = close_detail |
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24 self.end_game = end_game |
| 78 | 25 |
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26 def play_sound(self, scene_widget): |
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27 if self.soundfile: |
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28 sound = scene_widget.state.gd.sound.get_sound(self.soundfile) |
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29 sound.play() |
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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 self.play_sound(scene_widget) |
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34 if self.message: |
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35 scene_widget.show_message(self.message, self.style) |
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36 if self.detail_view: |
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37 scene_widget.show_detail(self.detail_view) |
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38 if (self.close_detail |
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39 and hasattr(scene_widget, 'parent') |
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40 and hasattr(scene_widget.parent, 'clear_detail')): |
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41 scene_widget.parent.clear_detail() |
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42 if self.end_game: |
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43 scene_widget.end_game() |
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44 |
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45 |
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46 def handle_result(result, scene_widget): |
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47 """Handle dealing with result or result sequences""" |
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48 if result: |
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49 if hasattr(result, 'process'): |
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50 result.process(scene_widget) |
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51 else: |
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52 for res in result: |
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53 if res: |
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54 # List may contain None's |
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55 res.process(scene_widget) |
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56 |
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57 |
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516
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58 class GameState(object): |
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59 """Complete game state. |
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60 |
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61 Game state consists of: |
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62 |
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63 * items |
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64 * scenes |
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65 """ |
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66 def __init__(self, gd): |
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67 # game description |
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68 self.gd = gd |
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69 # map of scene name -> Scene object |
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70 self.scenes = {} |
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71 # map of detail view name -> DetailView object |
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72 self.detail_views = {} |
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73 # map of item name -> Item object |
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74 self.items = {} |
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75 # list of item objects in inventory |
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76 self.inventory = [] |
| 73 | 77 # currently selected tool (item) |
| 78 self.tool = None | |
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79 # current scene |
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80 self.current_scene = None |
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81 # current detail view |
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82 self.current_detail = None |
| 120 | 83 # scene we came from, for enter and leave processing |
| 84 self.previous_scene = None | |
| 85 # scene transion helpers | |
| 86 self.do_check = None | |
| 87 self.old_pos = None | |
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88 # current thing |
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89 self.current_thing = None |
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90 self.highlight_override = False |
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91 # debug rects |
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92 self.debug_rects = False |
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93 |
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94 def set_debug_rects(self, value=True): |
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95 self.debug_rects = value |
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96 |
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97 def add_scene(self, scene): |
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98 self.scenes[scene.name] = scene |
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99 |
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100 def add_detail_view(self, detail_view): |
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101 self.detail_views[detail_view.name] = detail_view |
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102 |
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103 def add_item(self, item): |
| 35 | 104 self.items[item.name] = item |
| 490 | 105 item.set_state(self) |
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106 |
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107 def load_scenes(self, modname): |
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108 mod = __import__("gamelib.scenes.%s" % (modname,), fromlist=[modname]) |
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109 for scene_cls in mod.SCENES: |
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110 self.add_scene(scene_cls(self)) |
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111 if hasattr(mod, 'DETAIL_VIEWS'): |
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112 for scene_cls in mod.DETAIL_VIEWS: |
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113 self.add_detail_view(scene_cls(self)) |
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114 |
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115 def set_current_scene(self, name): |
| 120 | 116 old_scene = self.current_scene |
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117 self.current_scene = self.scenes[name] |
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118 self.current_thing = None |
| 120 | 119 if old_scene and old_scene != self.current_scene: |
| 120 self.previous_scene = old_scene | |
| 121 self.set_do_enter_leave() | |
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122 |
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123 def set_current_detail(self, name): |
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124 self.current_thing = None |
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125 if name is None: |
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126 self.current_detail = None |
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127 else: |
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128 self.current_detail = self.detail_views[name] |
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129 return self.current_detail |
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130 |
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131 def add_inventory_item(self, name): |
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33
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132 self.inventory.append(self.items[name]) |
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133 |
|
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134 def is_in_inventory(self, name): |
|
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135 if name in self.items: |
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136 return self.items[name] in self.inventory |
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137 return False |
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138 |
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139 def remove_inventory_item(self, name): |
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140 self.inventory.remove(self.items[name]) |
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141 # Unselect tool if it's removed |
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142 if self.tool == self.items[name]: |
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143 self.set_tool(None) |
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144 |
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145 def replace_inventory_item(self, old_item_name, new_item_name): |
|
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146 """Try to replace an item in the inventory with a new one""" |
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147 try: |
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148 index = self.inventory.index(self.items[old_item_name]) |
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149 self.inventory[index] = self.items[new_item_name] |
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150 if self.tool == self.items[old_item_name]: |
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151 self.set_tool(self.items[new_item_name]) |
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152 except ValueError: |
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153 return False |
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154 return True |
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155 |
| 73 | 156 def set_tool(self, item): |
| 157 self.tool = item | |
| 158 | |
| 159 def interact(self, pos): | |
| 78 | 160 return self.current_scene.interact(self.tool, pos) |
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161 |
|
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162 def interact_detail(self, pos): |
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163 return self.current_detail.interact(self.tool, pos) |
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164 |
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165 def cancel_doodah(self, screen): |
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166 if self.tool: |
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167 self.set_tool(None) |
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168 elif self.current_detail: |
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169 screen.state_widget.clear_detail() |
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170 |
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171 def do_enter_detail(self): |
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172 if self.current_detail: |
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173 self.current_detail.enter() |
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174 |
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175 def do_leave_detail(self): |
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176 if self.current_detail: |
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177 self.current_detail.leave() |
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178 |
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179 def animate(self): |
| 120 | 180 if not self.do_check: |
| 181 return self.current_scene.animate() | |
| 182 | |
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183 def check_enter_leave(self, screen): |
| 120 | 184 if not self.do_check: |
| 185 return None | |
| 186 if self.do_check == constants.LEAVE: | |
| 187 self.do_check = constants.ENTER | |
| 188 if self.previous_scene: | |
| 189 return self.previous_scene.leave() | |
| 190 return None | |
| 191 elif self.do_check == constants.ENTER: | |
| 192 self.do_check = None | |
| 193 # Fix descriptions, etc. | |
| 194 if self.old_pos: | |
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195 self.current_scene.update_current_thing(self.old_pos) |
| 120 | 196 return self.current_scene.enter() |
| 197 raise RuntimeError('invalid do_check value %s' % self.do_check) | |
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198 |
| 120 | 199 def set_do_enter_leave(self): |
| 200 """Flag that we need to run the enter loop""" | |
| 201 self.do_check = constants.LEAVE | |
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202 |
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203 |
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204 class StatefulGizmo(object): |
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205 |
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206 # initial data (optional, defaults to none) |
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207 INITIAL_DATA = None |
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208 |
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209 def __init__(self): |
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210 self.data = {} |
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211 if self.INITIAL_DATA: |
|
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212 # deep copy of INITIAL_DATA allows lists, sets and |
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213 # other mutable types to safely be used in INITIAL_DATA |
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214 self.data.update(copy.deepcopy(self.INITIAL_DATA)) |
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215 |
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216 def set_data(self, key, value): |
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217 self.data[key] = value |
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218 |
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219 def get_data(self, key): |
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220 return self.data.get(key, None) |
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221 |
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222 |
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223 class Scene(StatefulGizmo): |
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224 """Base class for scenes.""" |
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225 |
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226 # sub-folder to look for resources in |
| 22 | 227 FOLDER = None |
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228 |
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229 # name of background image resource |
| 22 | 230 BACKGROUND = None |
| 231 | |
|
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232 # name of scene (optional, defaults to folder) |
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233 NAME = None |
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234 |
| 278 | 235 # Offset of the background image |
| 236 OFFSET = (0, 0) | |
| 237 | |
|
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238 def __init__(self, state): |
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239 StatefulGizmo.__init__(self) |
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240 # scene name |
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241 self.name = self.NAME if self.NAME is not None else self.FOLDER |
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242 # link back to state object |
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243 self.state = state |
|
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244 self.sound = state.gd.sound |
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245 self.resource = state.gd.resource |
| 22 | 246 # map of thing names -> Thing objects |
| 247 self.things = {} | |
|
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248 self._background = None |
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249 |
| 35 | 250 def add_item(self, item): |
| 251 self.state.add_item(item) | |
| 252 | |
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253 def add_thing(self, thing): |
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254 self.things[thing.name] = thing |
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255 thing.set_scene(self) |
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256 |
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257 def remove_thing(self, thing): |
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258 del self.things[thing.name] |
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259 if thing is self.state.current_thing: |
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260 self.state.current_thing.leave() |
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261 self.state.current_thing = None |
|
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262 |
|
319
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263 def _get_description(self): |
|
324
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264 text = (self.state.current_thing and |
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265 self.state.current_thing.get_description()) |
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266 if text is None: |
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267 return None |
|
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268 label = BoomLabel(text) |
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269 label.set_margin(5) |
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270 label.border_width = 1 |
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271 label.border_color = (0, 0, 0) |
|
326
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272 label.bg_color = Color(210, 210, 210, 255) |
|
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273 label.fg_color = (0, 0, 0) |
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274 return label |
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275 |
|
187
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276 def draw_description(self, surface, screen): |
|
319
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277 description = self._get_description() |
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278 if description is not None: |
|
326
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279 w, h = description.size |
|
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280 sub = screen.get_root().surface.subsurface( |
|
529
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281 Rect(400 - w / 2, 5, w, h)) |
|
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282 description.draw_all(sub) |
|
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283 |
|
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284 def _cache_background(self): |
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285 if self.BACKGROUND and not self._background: |
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286 self._background = get_image(self.FOLDER, self.BACKGROUND) |
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287 |
| 22 | 288 def draw_background(self, surface): |
|
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289 self._cache_background() |
|
130
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290 if self._background is not None: |
| 278 | 291 surface.blit(self._background, self.OFFSET, None) |
|
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292 else: |
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293 surface.fill((200, 200, 200)) |
|
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294 |
|
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295 def draw_things(self, surface): |
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296 for thing in self.things.itervalues(): |
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297 thing.draw(surface) |
|
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298 |
|
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299 def draw(self, surface, screen): |
| 22 | 300 self.draw_background(surface) |
|
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301 self.draw_things(surface) |
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302 self.draw_description(surface, screen) |
|
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303 |
|
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304 def interact(self, item, pos): |
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305 """Interact with a particular position. |
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306 |
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307 Item may be an item in the list of items or None for the hand. |
| 78 | 308 |
| 309 Returns a Result object to provide feedback to the player. | |
|
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310 """ |
|
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311 if self.state.current_thing is not None: |
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312 return self.state.current_thing.interact(item) |
|
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313 |
|
105
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314 def animate(self): |
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315 """Animate all the things in the scene. |
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316 |
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317 Return true if any of them need to queue a redraw""" |
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318 result = False |
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319 for thing in self.things.itervalues(): |
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320 if thing.animate(): |
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|
321 result = True |
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|
322 return result |
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|
323 |
| 120 | 324 def enter(self): |
| 325 return None | |
| 326 | |
| 327 def leave(self): | |
| 328 return None | |
| 329 | |
|
324
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330 def update_current_thing(self, pos): |
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331 if self.state.current_thing is not None: |
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332 if not self.state.current_thing.contains(pos): |
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|
333 self.state.current_thing.leave() |
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334 self.state.current_thing = None |
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|
335 for thing in self.things.itervalues(): |
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336 if thing.contains(pos): |
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337 thing.enter(self.state.tool) |
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338 self.state.current_thing = thing |
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339 break |
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|
340 |
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|
341 def mouse_move(self, pos): |
|
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342 """Call to check whether the cursor has entered / exited a thing. |
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343 |
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344 Item may be an item in the list of items or None for the hand. |
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|
345 """ |
|
324
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|
346 self.update_current_thing(pos) |
|
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347 |
|
125
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|
348 def get_detail_size(self): |
|
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349 self._cache_background() |
|
127
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350 return self._background.get_size() |
|
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351 |
|
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352 |
|
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353 class InteractiveMixin(object): |
|
519
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354 def is_interactive(self, tool=None): |
|
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355 return True |
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356 |
|
492
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|
357 def interact(self, tool): |
|
519
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358 if not self.is_interactive(tool): |
|
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359 return None |
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|
360 if tool is None: |
|
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361 return self.interact_without() |
|
492
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362 handler = getattr(self, 'interact_with_' + tool.tool_name, None) |
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|
363 inverse_handler = self.get_inverse_interact(tool) |
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364 if handler is not None: |
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|
365 return handler(tool) |
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|
366 elif inverse_handler is not None: |
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|
367 return inverse_handler(self) |
|
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368 else: |
|
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|
369 return self.interact_default(tool) |
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|
370 |
|
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|
371 def get_inverse_interact(self, tool): |
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372 return None |
|
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373 |
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374 def interact_without(self): |
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375 return self.interact_default(None) |
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376 |
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377 def interact_default(self, item=None): |
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378 return None |
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379 |
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380 |
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|
381 class Thing(StatefulGizmo, InteractiveMixin): |
| 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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diff
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|
398 _interact_hilight_color = Color('red') |
|
68
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|
399 |
|
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|
400 def __init__(self): |
|
55
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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 |
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411 self.current_interact = None |
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412 self.rect = None |
|
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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""" | |
|
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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'): |
|
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421 self.rect = self.rect.move(self.scene.OFFSET) |
| 278 | 422 else: |
|
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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 |
|
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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() | |
|
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440 assert self.rect is not None, name |
|
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441 |
|
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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 |
|
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452 def get_description(self): |
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453 return None |
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454 |
|
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455 def enter(self, item): |
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456 """Called when the cursor enters the Thing.""" |
|
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457 pass |
|
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458 |
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459 def leave(self): |
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460 """Called when the cursr leaves the Thing.""" |
|
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461 pass |
|
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462 |
|
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463 def animate(self): |
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464 return self.current_interact.animate() |
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465 |
|
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466 def draw(self, surface): |
|
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467 old_rect = self.current_interact.rect |
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468 if old_rect: |
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469 self.current_interact.rect = old_rect.move(self.scene.OFFSET) |
|
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470 self.current_interact.draw(surface) |
|
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471 self.current_interact.rect = old_rect |
|
553
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472 if self.state.debug_rects and self._interact_hilight_color: |
|
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473 if hasattr(self.rect, 'collidepoint'): |
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474 frame_rect(surface, self._interact_hilight_color, |
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475 self.rect.inflate(1, 1), 1) |
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476 else: |
|
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477 for rect in self.rect: |
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478 frame_rect(surface, self._interact_hilight_color, |
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479 rect.inflate(1, 1), 1) |
|
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|
480 |
| 22 | 481 |
|
489
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|
482 class Item(InteractiveMixin): |
| 22 | 483 """Base class for inventory items.""" |
| 484 | |
| 35 | 485 # image for inventory |
| 486 INVENTORY_IMAGE = None | |
|
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|
487 |
| 490 | 488 # name of item |
| 489 NAME = None | |
| 490 | |
|
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491 # name for interactions (i.e. def interact_with_<TOOL_NAME>) |
| 226 | 492 TOOL_NAME = None |
| 493 | |
|
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494 # set to instance of CursorSprite |
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495 CURSOR = None |
|
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|
496 |
|
487
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|
497 def __init__(self, name=None): |
| 490 | 498 self.state = None |
|
487
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|
499 self.name = self.NAME |
|
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|
500 if name is not None: |
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|
501 self.name = name |
|
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|
502 self.tool_name = name |
| 226 | 503 if self.TOOL_NAME is not None: |
| 504 self.tool_name = self.TOOL_NAME | |
|
526
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505 self.inventory_image = None |
|
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|
506 |
|
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|
507 def _cache_inventory_image(self): |
|
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|
508 if not self.inventory_image: |
|
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|
509 self.inventory_image = get_image('items', self.INVENTORY_IMAGE) |
| 22 | 510 |
| 490 | 511 def set_state(self, state): |
| 512 assert self.state is None | |
| 513 self.state = state | |
| 514 | |
|
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|
515 def get_inventory_image(self): |
|
526
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|
516 self._cache_inventory_image() |
|
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|
517 return self.inventory_image |
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|
518 |
|
492
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|
519 def get_inverse_interact(self, tool): |
|
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diff
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|
520 return getattr(tool, 'interact_with_' + self.tool_name, None) |
|
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|
521 |
|
519
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518
diff
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|
522 def is_interactive(self, tool=None): |
|
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diff
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|
523 if tool: |
|
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diff
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|
524 return True |
| 512 | 525 return False |
| 526 | |
| 191 | 527 |
| 528 class CloneableItem(Item): | |
| 529 _counter = 0 | |
| 530 | |
|
252
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|
531 @classmethod |
|
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|
532 def _get_new_id(cls): |
|
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|
533 cls._counter += 1 |
|
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|
534 return cls._counter - 1 |
|
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|
535 |
|
487
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diff
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|
536 def __init__(self, name=None): |
| 490 | 537 super(CloneableItem, self).__init__(name) |
|
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|
538 my_count = self._get_new_id() |
| 490 | 539 self.name = "%s.%s" % (self.name, my_count) |