annotate gamelib/gamescreen.py @ 167:5845a3ed4dad

Inventory interaction can (surprisingly) affect the inventory
author Neil Muller <neil@dip.sun.ac.za>
date Wed, 25 Aug 2010 12:21:16 +0200
parents 0db92b3b5833
children fbfd8e748ac0
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1 # gamescreen.py
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2 # Copyright Boomslang team, 2010 (see COPYING File)
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3 # Main menu for the game
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4
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5 from albow.controls import Button, Widget
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6 from albow.layout import Row
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7 from albow.palette_view import PaletteView
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8 from albow.screen import Screen
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9 from pygame import Rect, mouse
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10 from pygame.color import Color
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11 from pygame.locals import BLEND_ADD
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12
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13 from constants import SCREEN, BUTTON_SIZE, SCENE_SIZE
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14 from cursor import CursorWidget
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15 from hand import HandButton
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16 from popupmenu import PopupMenu, PopupMenuButton
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17 from state import initial_state, Item
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18 from widgets import MessageDialog
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19
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20 class InventoryView(PaletteView):
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21
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22 sel_color = Color("yellow")
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23 sel_width = 2
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24
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25 def __init__(self, state, scene_widget):
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26 PaletteView.__init__(self, (BUTTON_SIZE, BUTTON_SIZE), 1, 6, scrolling=True)
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27 self.state = state
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28 self.scene_widget = scene_widget
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30 def num_items(self):
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31 return len(self.state.inventory)
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33 def draw_item(self, surface, item_no, rect):
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34 item_image = self.state.inventory[item_no].get_inventory_image()
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35 surface.blit(item_image, rect, None, BLEND_ADD)
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37 def click_item(self, item_no, event):
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38 if self.item_is_selected(item_no):
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39 self.unselect()
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40 else:
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41 if self.state.tool:
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42 result = self.state.inventory[item_no].interact(self.state.tool, self.state)
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43 if result:
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44 result.process(self.scene_widget)
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45 else:
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46 self.state.set_tool(self.state.inventory[item_no])
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47
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48 def item_is_selected(self, item_no):
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49 return self.state.tool is self.state.inventory[item_no]
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50
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51 def unselect(self):
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52 self.state.set_tool(None)
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54
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55 class StateWidget(Widget):
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56
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57 def __init__(self, state):
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58 Widget.__init__(self, Rect(0, 0, SCENE_SIZE[0], SCENE_SIZE[1]))
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59 self.state = state
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60 self.detail = DetailWindow(state)
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61
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62 def draw(self, surface):
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63 self.state.draw(surface)
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64
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65 def mouse_down(self, event):
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66 if self.subwidgets:
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67 self.remove(self.detail)
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68 self.state.set_current_detail(None)
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69 self._mouse_move(event.pos)
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70 else:
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71 result = self.state.interact(event.pos)
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72 if result:
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73 result.process(self)
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75 def animate(self):
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76 if self.state.animate():
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77 # queue a redraw
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78 self.invalidate()
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79 # We do this here so we can get enter and leave events regardless
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80 # of what happens
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81 result = self.state.check_enter_leave()
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82 if result:
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83 result.process(self)
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84
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85 def mouse_move(self, event):
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86 if not self.subwidgets:
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87 self._mouse_move(event.pos)
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88
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89 def _mouse_move(self, pos):
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90 self.state.mouse_move(pos)
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91
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92 def show_message(self, message):
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93 self.parent.cursor_highlight(False)
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94 # Display the message as a modal dialog
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95 MessageDialog(message, 60).present()
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96 # queue a redraw to show updated state
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97 self.invalidate()
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98 # The cursor could have gone anywhere
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99 if self.subwidgets:
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100 self.subwidgets[0]._mouse_move(mouse.get_pos())
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101 else:
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102 self._mouse_move(mouse.get_pos())
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103
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104 def show_detail(self, detail):
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105 w, h = self.state.set_current_detail(detail)
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106 self.detail.set_image_rect(Rect(0, 0, w, h))
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107 self.add_centered(self.detail)
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108 self.parent.cursor_highlight(False)
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109
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110
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111 class DetailWindow(Widget):
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112 def __init__(self, state):
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113 Widget.__init__(self)
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114 self.state = state
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115 self.border_width = 5
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116 self.border_color = (0, 0, 0)
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117
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118 def set_image_rect(self, rect):
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119 bw = self.border_width
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120 self.image_rect = rect
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121 self.image_rect.topleft = (bw, bw)
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122 self.set_rect(rect.inflate(bw*2, bw*2))
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124 def draw(self, surface):
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125 self.state.draw_detail(surface.subsurface(self.image_rect))
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127 def mouse_down(self, event):
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128 result = self.state.interact_detail(self.global_to_local(event.pos))
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129 if result:
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130 result.process(self)
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132 def mouse_move(self, event):
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133 self._mouse_move(event.pos)
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134
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135 def _mouse_move(self, pos):
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136 self.state.mouse_move_detail(self.global_to_local(pos))
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137
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138 def show_message(self, message):
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139 self.parent.show_message(message)
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140 self.invalidate()
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141
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142
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143 class ToolBar(Row):
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144 def __init__(self, items):
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145 for item in items:
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146 item.height = BUTTON_SIZE
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147 Row.__init__(self, items, spacing=0, width=SCREEN[0])
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148
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149
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150 class GameScreen(Screen, CursorWidget):
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151 def __init__(self, shell):
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152 CursorWidget.__init__(self)
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153 Screen.__init__(self, shell)
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154 self.running = False
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155
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156 def _clear_all(self):
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157 for widget in self.subwidgets[:]:
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158 self.remove(widget)
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159
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160 def start_game(self):
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161 self._clear_all()
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162 # TODO: Randomly plonk the state here for now
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163 self.state = initial_state(self)
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164 self.state_widget = StateWidget(self.state)
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165 self.add(self.state_widget)
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166
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167 self.popup_menu = PopupMenu(self.shell)
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168 self.menubutton = PopupMenuButton('Menu',
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169 action=self.popup_menu.show_menu)
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170
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171 self.handbutton = HandButton(action=self.hand_pressed)
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172
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173 self.inventory = InventoryView(self.state, self.state_widget)
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174
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175 self.toolbar = ToolBar([
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176 self.menubutton,
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177 self.handbutton,
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178 self.inventory,
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179 ])
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180 self.toolbar.bottomleft = self.bottomleft
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181 self.add(self.toolbar)
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182
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183 self.running = True
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184
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185 def enter_screen(self):
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186 CursorWidget.enter_screen(self)
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187
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188 def leave_screen(self):
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189 CursorWidget.leave_screen(self)
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190
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191 # Albow uses magic method names (command + '_cmd'). Yay.
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192 # Albow's search order means they need to be defined here, not in
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193 # PopMenu, which is annoying.
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194 def hide_cmd(self):
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195 # This option does nothing, but the method needs to exist for albow
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196 return
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197
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198 def main_menu_cmd(self):
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199 self.shell.show_screen(self.shell.menu_screen)
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200
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201 def quit_cmd(self):
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202 self.shell.quit()
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203
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204 def hand_pressed(self):
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205 self.inventory.unselect()
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206
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207 def begin_frame(self):
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208 if self.running:
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209 self.state_widget.animate()
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210
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211 def mouse_delta(self, event):
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212 CursorWidget.mouse_delta(self, event)
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213 if not self.state_widget.rect.collidepoint(event.pos):
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214 self.cursor_highlight(False)