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annotate gamesceneview.py @ 0:7a89ea5404b1

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Initial commit of parpg-core.
author M. George Hansen <technopolitica@gmail.com>
date Sat, 14 May 2011 01:12:35 -0700
parents
children 98f26f7636d8
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0
7a89ea5404b1 Initial commit of parpg-core.
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1 # This file is part of PARPG.
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2
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3 # PARPG is free software: you can redistribute it and/or modify
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4 # it under the terms of the GNU General Public License as published by
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5 # the Free Software Foundation, either version 3 of the License, or
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6 # (at your option) any later version.
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7
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8 # PARPG is distributed in the hope that it will be useful,
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9 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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10 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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11 # GNU General Public License for more details.
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12
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13 # You should have received a copy of the GNU General Public License
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14 # along with PARPG. If not, see <http://www.gnu.org/licenses/>.
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15
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16 from sounds import SoundEngine
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17 from viewbase import ViewBase
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18 from fife import fife
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19
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20 class GameSceneView(ViewBase):
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21 """GameSceneView is responsible for drawing the scene"""
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22 def __init__(self, engine, model):
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23 """Constructor for GameSceneView
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24 @param engine: A fife.Engine instance
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25 @type engine: fife.Engine
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26 @param model: a script.GameModel instance
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27 @type model: script.GameModel
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28 """
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29 super(GameSceneView, self).__init__(engine, model)
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30
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31 # init the sound
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32 self.sounds = SoundEngine(engine)
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33
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34 self.hud = None
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35
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36 # The current highlighted object
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37 self.highlight_obj = None
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38
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39 # faded objects in top layer
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40 self.faded_objects = set()
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41
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42 def displayObjectText(self, obj_id, text, time=1000):
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43 """Display on screen the text of the object over the object.
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44 @type obj_id: id of fife.instance
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45 @param obj: id of object to draw over
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46 @type text: String
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47 @param text: text to display over object
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48 @return: None"""
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49 try:
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50 if obj_id:
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51 obj = self.model.active_map.agent_layer.getInstance(obj_id)
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52 else:
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53 obj = None
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54 except RuntimeError as error:
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55 if error.args[0].split(',')[0].strip() == "_[NotFound]_":
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56 obj = None
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57 else:
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58 raise
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59 if obj:
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60 obj.say(str(text), time)
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61
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62 def onWalk(self, click):
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63 """Callback sample for the context menu."""
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64 self.hud.hideContainer()
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65 self.model.game_state.player_character.run(click)
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66
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67 def refreshTopLayerTransparencies(self):
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68 """Fade or unfade TopLayer instances if the PlayerCharacter
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69 is under them."""
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70 if not self.model.active_map:
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71 return
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72
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73 # get the PlayerCharacter's screen coordinates
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74 camera = self.model.active_map.cameras[self.model.active_map.my_cam_id]
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75 point = self.model.game_state.player_character.\
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76 behaviour.agent.getLocation()
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77 scr_coords = camera.toScreenCoordinates(point.getMapCoordinates())
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78
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79 # find all instances on TopLayer that fall on those coordinates
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80 instances = camera.getMatchingInstances(scr_coords,
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81 self.model.active_map.top_layer)
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82 instance_ids = [ instance.getId() for instance in instances ]
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83 faded_objects = self.faded_objects
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84
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85 # fade instances
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86 for instance_id in instance_ids:
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87 if instance_id not in faded_objects:
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88 faded_objects.add(instance_id)
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89 self.model.active_map.top_layer.getInstance(instance_id).\
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90 get2dGfxVisual().setTransparency(128)
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91
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92 # unfade previously faded instances
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93 for instance_id in faded_objects.copy():
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94 if instance_id not in instance_ids:
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95 faded_objects.remove(instance_id)
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96 self.model.active_map.top_layer.getInstance(instance_id).\
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97 get2dGfxVisual().setTransparency(0)
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98
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99
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100 #def removeHighlight(self):
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101
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102
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103 def highlightFrontObject(self, mouse_coords):
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104 """Highlights the object that is at the
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105 current mouse coordinates"""
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106 if not self.model.active_map:
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107 return
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108 if mouse_coords:
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109 front_obj = self.model.getObjectAtCoords(mouse_coords)
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110 if front_obj != None:
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111 if self.highlight_obj == None \
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112 or front_obj.getId() != \
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113 self.highlight_obj:
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114 if self.model.game_state.hasObject(front_obj.getId()):
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115 self.displayObjectText(self.highlight_obj, "")
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116 self.model.active_map.outline_renderer.removeAllOutlines()
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117 self.highlight_obj = front_obj.getId()
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118 self.model.active_map.outline_renderer.addOutlined(
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119 front_obj,
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120 0,
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121 137, 255, 2)
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122 # get the text
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123 item = self.model.objectActive(self.highlight_obj)
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124 if item is not None:
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125 self.displayObjectText(self.highlight_obj,
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126 item.name)
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127 else:
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128 self.model.active_map.outline_renderer.removeAllOutlines()
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129 self.highlight_obj = None
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130
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131
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132 def moveCamera(self, direction):
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133 """Move the camera in the given direction.
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134 @type direction: list of two integers
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135 @param direction: the two integers can be 1, -1, or 0
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136 @return: None """
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137
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138 if 'cameras' in dir(self.model.active_map):
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139 cam = self.model.active_map.cameras[self.model.active_map.my_cam_id]
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140 location = cam.getLocation()
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141 position = location.getMapCoordinates()
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142
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143 #how many pixls to move by each call
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144 move_by = 1
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145 #create a new DoublePoint3D and add it to position DoublePoint3D
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146 new_x, new_y = move_by * direction[0], move_by * direction[1]
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147
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148 position_offset = fife.DoublePoint3D(int(new_x), int(new_y))
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149 position += position_offset
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150
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151 #give location the new position
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152 location.setMapCoordinates(position)
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153
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154 #detach the camera from any objects
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155 cam.detach()
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156 #move the camera to the new location
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157 cam.setLocation(location)
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158
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159