Mercurial > fife-parpg

annotate demos/shooter/scripts/common/baseobject.py @ 473:b78020d31186

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Small update to ensure python doesn't try to delete objects that FIFE owns.
author prock@33b003aa-7bff-0310-803a-e67f0ece8222
date Tue, 20 Apr 2010 20:36:58 +0000
parents ac0f62a07a3e
children 78a1eb57c074
rev   line source
448
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1 # -*- coding: utf-8 -*-
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2
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3 # ####################################################################
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4 # Copyright (C) 2005-2009 by the FIFE team
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5 # http://www.fifengine.de
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6 # This file is part of FIFE.
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7 #
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8 # FIFE is free software; you can redistribute it and/or
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9 # modify it under the terms of the GNU Lesser General Public
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10 # License as published by the Free Software Foundation; either
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11 # version 2.1 of the License, or (at your option) any later version.
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12 #
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13 # This library is distributed in the hope that it will be useful,
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14 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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15 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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16 # Lesser General Public License for more details.
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17 #
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18 # You should have received a copy of the GNU Lesser General Public
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19 # License along with this library; if not, write to the
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20 # Free Software Foundation, Inc.,
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21 # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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22 # ####################################################################
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23
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24 from fife import fife
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25 from scripts.common.helpers import normalize
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26 from scripts.common.helpers import Rect
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27
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28 class SpaceObject(object):
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29 def __init__(self, scene, name, findInstance=True):
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30 self._scene = scene
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31 self._model = self._scene.model
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32 self._layer = self._scene.objectlayer
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33 self._name = name
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34 self._xscale = self._layer.getCellGrid().getXScale()
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35 self._yscale = self._layer.getCellGrid().getYScale()
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36 self._velocity = fife.DoublePoint(0,0)
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37 self._maxvelocity = 1.25
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38 self._boundingBox = Rect(0,0,0,0)
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39 self._running = False
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40 self._changedPosition = False
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41 self._scenenodeid = -1
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42
448
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43 if findInstance:
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44 self._instance = self._layer.getInstance(self._name)
473
b78020d31186 Small update to ensure python doesn't try to delete objects that FIFE owns.
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45 self._instance.thisown = 0
448
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46 else:
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47 self._instnace = None
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48
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49 def start(self):
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50 if self._instance:
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51 self._running = True
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52
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53 def update(self):
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54 if self._running:
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55 shiploc = self.location
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56 exactloc = shiploc.getExactLayerCoordinates()
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57
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58 exactloc.x += self._velocity.x * (self._scene.timedelta/1000.0)/self._xscale
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59 exactloc.y += self._velocity.y * (self._scene.timedelta/1000.0)/self._yscale
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60
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61 self._boundingBox.x = (exactloc.x * self._xscale - self._boundingBox.w/2)
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62 self._boundingBox.y = (exactloc.y * self._yscale - self._boundingBox.h/2)
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63
449
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64 shiploc.setExactLayerCoordinates(exactloc)
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65
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66 if shiploc == self.location:
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67 self._changePosition = False
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68 else:
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69 self._changedPosition = True
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70
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71 self.location = shiploc
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72
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73 def stop(self):
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74 self._running = False
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75
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76 def destroy(self):
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77 self._running = False
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78
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79 def applyThrust(self, vector):
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80 self._velocity.x += (vector.x * (self._scene.timedelta/1000.0))/self._xscale
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81 self._velocity.y += (vector.y * (self._scene.timedelta/1000.0))/self._yscale
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82
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83 if self._velocity.length() > self._maxvelocity:
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84 norm = normalize(self._velocity)
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85 self._velocity.x = norm.x * self._maxvelocity
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86 self._velocity.y = norm.y * self._maxvelocity
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87
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88
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89 def applyBrake(self, brakingForce):
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90
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91 if self._velocity.length() <= .01:
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92 self._velocity.x = 0
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93 self._velocity.y = 0
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94 return
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95
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96 #first normalize to get a unit vector of the direction we are traveling
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97 norm = normalize(self._velocity)
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98 if norm.length() == 0:
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99 self._velocity.x = 0
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100 self._velocity.y = 0
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101 return
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102
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103 #negate to get opposite direction
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104 norm.x = norm.x * -1
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105 norm.y = norm.y * -1
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106
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107 #apply braking deceleration
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108 norm.x *= brakingForce
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109 norm.y *= brakingForce
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110
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111 self._velocity.x += (norm.x * (self._scene.timedelta/1000.0))/self._xscale
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112 self._velocity.y += (norm.y * (self._scene.timedelta/1000.0))/self._yscale
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113
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114 def removeFromScene(self):
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115 self._scene.removeObjectFromScene(self)
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116 if self._instance:
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117 self._layer.deleteInstance(self._instance)
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118 self._instance = None
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119
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120 def _isRunning(self):
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121 return self._running
448
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122
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123 def _getMaxVelocity(self):
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124 return self._maxvelocity
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125
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126 def _setMaxVelocity(self, maxvel):
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127 self._maxvelocity = maxvel/sqrt(self._xscale * self._yscale)
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128
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129 def _getLocation(self):
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130 return self._instance.getLocation()
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131
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132 def _setLocation(self, loc):
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133 self._instance.setLocation(loc)
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134
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135 def _getInstance(self):
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136 return self._instance
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137
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138 def _setInstance(self, instance):
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139 self._instance = instance
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140
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141 def _getVelocity(self):
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142 return self._velocity
449
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143
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144 def _setVelocity(self, velocity):
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145 self._velocity = velocity
448
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146
449
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147 def _getBoundingBox(self):
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148 return self._boundingBox
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149
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prock@33b003aa-7bff-0310-803a-e67f0ece8222
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150 def _getW(self):
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151 return self._boundingBox.w
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152
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153 def _getH(self):
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154 return self._boundingBox.h
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155
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156 def _setW(self, w):
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157 self._boundingBox.w = w
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158
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159 def _setH(self, h):
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160 self._boundingBox.h = h
453
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161
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162 def _changedPosition(self):
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163 return self._changedPosition
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164
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165 def _getNodeId(self):
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166 return self._scenenodeid
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167
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168 def _setNodeId(self, id):
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169 self._scenenodeid = id
449
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170
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171 width = property(_getW, _setW)
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diff changeset
172 height = property(_getH, _setH)
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diff changeset
173 boundingbox = property(_getBoundingBox)
448
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174 location = property(_getLocation,_setLocation)
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175 instance = property(_getInstance, _setInstance)
449
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prock@33b003aa-7bff-0310-803a-e67f0ece8222
parents: 448
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176 velocity = property(_getVelocity, _setVelocity)
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prock@33b003aa-7bff-0310-803a-e67f0ece8222
parents: 448
diff changeset
177 maxvelocity = property(_getMaxVelocity, _setMaxVelocity)
453
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prock@33b003aa-7bff-0310-803a-e67f0ece8222
parents: 451
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178 running = property(_isRunning)
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179 changedposition = property(_changedPosition)
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prock@33b003aa-7bff-0310-803a-e67f0ece8222
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180 scenenodeid = property(_getNodeId, _setNodeId)