Mercurial > fife-parpg

annotate demos/shooter/scripts/weapons.py @ 453:cf53848fb187

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Scene now gets updated when an object moves from one node to another. Player is now part of the scene. Projectiles can be files by both player and enemies. Some code cleanup.
author prock@33b003aa-7bff-0310-803a-e67f0ece8222
date Tue, 06 Apr 2010 19:12:41 +0000
parents f463ab431cc0
children bd7e8f708adf
rev   line source
446
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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.ships.shipbase import SpaceObject
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26 from scripts.common.helpers import normalize
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27
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28 class Projectile(SpaceObject):
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29 def __init__(self, scene, owner, projectileName, timeToLive):
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30 super(Projectile, self).__init__(scene, projectileName, False)
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31
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32 self._obj = self._model.getObject(self._name, "http://www.fifengine.de/xml/tutorial")
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33
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34 self._ttl = timeToLive
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35 self._starttime = 0
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36 self._totaltime = 0
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37
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38 self._owner = owner
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39
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40 self.width = 0.025
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41 self.height = 0.025
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42
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43 def create(self, location):
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44 self._instance = self._layer.createInstance(self._obj, location.getExactLayerCoordinates(), "bullet")
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45 fife.InstanceVisual.create(self._instance)
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46
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47 def run(self, velocity, location, time):
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48 if not self._running:
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49 self._velocity = velocity
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50 self._velocity.x /= self._xscale
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51 self._velocity.y /= self._yscale
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52
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53 self.create(location)
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54 self._running = True
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55
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56 self._starttime = time
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57
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58 def destroy(self):
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59 if self._running and self._instance:
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60 self._layer.deleteInstance(self._instance)
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61 self._running = False
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62
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63 def _getTTL(self):
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64 return self._ttl
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65
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66 def _getOwner(self):
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67 return self._owner
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68
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69 def update(self, timedelta):
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70 self._totaltime += timedelta
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71 if self._running and (self._totaltime - self._starttime) < self._ttl:
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72 super(Projectile, self).update(timedelta)
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73 else:
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74 self.destroy()
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75
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76 ttl = property(_getTTL)
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77 owner = property(_getOwner)
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78
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79 class Weapon(object):
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80 def __init__(self, scene, ship, firerate):
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81 self._scene = scene
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82 self._model = self._scene.model
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83 self._layer = self._scene.objectlayer
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84 self._ship = ship
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85 self._firerate = firerate
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86 self._lastfired = 0
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87 self._projectileVelocity = 0.75
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88
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89 def fire(self, curtime, direction):
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90 velocity = normalize(direction)
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91 velocity.x = velocity.x * self._projectileVelocity
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92 velocity.y = velocity.y * self._projectileVelocity
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93
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94 if (curtime - self._lastfired) > self._firerate:
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95 pjctl = Projectile(self._scene, self._ship, "bullet1", 2000 )
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96 pjctl.run(velocity, self._ship.location, curtime)
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97 self._lastfired = curtime
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98 return pjctl
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99
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100 return None
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101