Mercurial > parpg-core

annotate src/parpg/behaviours/npc.py @ 64:32faacaf6f28

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Added funcionality to load Entities from file
author KarstenBock@gmx.net
date Mon, 05 Sep 2011 14:47:21 +0200
parents 2915dbb60940
children 58661f5b2f6b
rev   line source
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4311a0a5378c Moved behaviours from objects/actors.py to files seperate files inside a behaviours directory.
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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 random import randrange
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17
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18 import base
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19 from base import BaseBehaviour
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20
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21 class NPCBehaviour(BaseBehaviour):
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22 """This is a basic NPC behaviour"""
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23 def __init__(self, parent=None, layer=None):
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24 super(NPCBehaviour, self).__init__(layer)
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25
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26 self.parent = parent
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27 self.state = base._AGENT_STATE_NONE
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28 self.pc = None
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29 self.target_loc = None
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30 self.nextAction = None
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31
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32 # hard code these for now
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33 self.distRange = (2, 4)
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34 # these are parameters to lower the rate of wandering
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35 # wander rate is the number of "IDLEs" before a wander step
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36 # this could be set for individual NPCs at load time
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37 # or thrown out altogether.
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38 self.wanderCounter = 0
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39 self.wanderRate = 9
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40
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41 def getTargetLocation(self):
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42 """@rtype: fife.Location
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43 @return: NPC's position"""
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44 x = self.getX()
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45 y = self.getY()
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46 if self.state == _AGENT_STATE_WANDER:
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47 """ Random Target Location """
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48 l = [0, 0]
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49 for i in range(len(l)):
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50 sign = randrange(0, 2)
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51 dist = randrange(self.distRange[0], self.distRange[1])
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52 if sign == 0:
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53 dist *= -1
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54 l[i] = dist
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55 x += l[0]
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56 y += l[1]
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57 # Random walk is
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58 # rl = randint(-1, 1);ud = randint(-1, 1);x += rl;y += ud
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59 l = fife.Location(self.agent.getLocation())
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60 l.setLayerCoordinates(fife.ModelCoordinate(x, y))
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61 return l
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62
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63 def onInstanceActionFinished(self, instance, action):
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64 """What the NPC does when it has finished an action.
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65 Called by the engine and required for InstanceActionListeners.
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66 @type instance: fife.Instance
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67 @param instance: self.agent (the NPC listener is listening for this
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68 instance)
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69 @type action: ???
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70 @param action: ???
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71 @return: None"""
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72 if self.state == _AGENT_STATE_WANDER:
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73 self.target_loc = self.getTargetLocation()
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74 self.idle()
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75
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76
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77 def idle(self):
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78 """Controls the NPC when it is idling. Different actions
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79 based on the NPC's state.
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80 @return: None"""
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81 if self.state == _AGENT_STATE_NONE:
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82 self.state = _AGENT_STATE_IDLE
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83 self.agent.act('stand', self.agent.getFacingLocation())
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84 elif self.state == _AGENT_STATE_IDLE:
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85 if self.wanderCounter > self.wanderRate:
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86 self.wanderCounter = 0
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87 self.state = _AGENT_STATE_WANDER
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88 else:
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89 self.wanderCounter += 1
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90 self.state = _AGENT_STATE_NONE
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91
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92 self.target_loc = self.getTargetLocation()
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93 self.agent.act('stand', self.agent.getFacingLocation())
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94 elif self.state == _AGENT_STATE_WANDER:
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95 self.parent.wander(self.target_loc)
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96 self.state = _AGENT_STATE_NONE
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97 elif self.state == _AGENT_STATE_TALK:
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98 self.agent.act('stand', self.pc.getLocation())