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comparison src/parpg/behaviours/npc.py @ 55:4311a0a5378c

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Moved behaviours from objects/actors.py to files seperate files inside a behaviours directory.
author KarstenBock@gmx.net
date Mon, 05 Sep 2011 13:02:05 +0200
parents
children 097cceb06b92
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54:5e27c24acaef 55:4311a0a5378c
1 # This file is part of PARPG.
2
3 # PARPG is free software: you can redistribute it and/or modify
4 # it under the terms of the GNU General Public License as published by
5 # the Free Software Foundation, either version 3 of the License, or
6 # (at your option) any later version.
7
8 # PARPG is distributed in the hope that it will be useful,
9 # but WITHOUT ANY WARRANTY; without even the implied warranty of
10 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 # GNU General Public License for more details.
12
13 # You should have received a copy of the GNU General Public License
14 # along with PARPG. If not, see <http://www.gnu.org/licenses/>.
15
16 from random import randrange
17
18 from base import *
19
20 class NPCBehaviour(BaseBehaviour):
21 """This is a basic NPC behaviour"""
22 def __init__(self, Parent=None, Layer=None):
23 super(NPCBehaviour, self).__init__(Layer)
24
25 self.parent = Parent
26 self.state = _AGENT_STATE_NONE
27 self.pc = None
28 self.target_loc = None
29 self.nextAction = None
30
31 # hard code these for now
32 self.distRange = (2, 4)
33 # these are parameters to lower the rate of wandering
34 # wander rate is the number of "IDLEs" before a wander step
35 # this could be set for individual NPCs at load time
36 # or thrown out altogether.
37 self.wanderCounter = 0
38 self.wanderRate = 9
39
40 def getTargetLocation(self):
41 """@rtype: fife.Location
42 @return: NPC's position"""
43 x = self.getX()
44 y = self.getY()
45 if self.state == _AGENT_STATE_WANDER:
46 """ Random Target Location """
47 l = [0, 0]
48 for i in range(len(l)):
49 sign = randrange(0, 2)
50 dist = randrange(self.distRange[0], self.distRange[1])
51 if sign == 0:
52 dist *= -1
53 l[i] = dist
54 x += l[0]
55 y += l[1]
56 # Random walk is
57 # rl = randint(-1, 1);ud = randint(-1, 1);x += rl;y += ud
58 l = fife.Location(self.agent.getLocation())
59 l.setLayerCoordinates(fife.ModelCoordinate(x, y))
60 return l
61
62 def onInstanceActionFinished(self, instance, action):
63 """What the NPC does when it has finished an action.
64 Called by the engine and required for InstanceActionListeners.
65 @type instance: fife.Instance
66 @param instance: self.agent (the NPC listener is listening for this
67 instance)
68 @type action: ???
69 @param action: ???
70 @return: None"""
71 if self.state == _AGENT_STATE_WANDER:
72 self.target_loc = self.getTargetLocation()
73 self.idle()
74
75
76 def idle(self):
77 """Controls the NPC when it is idling. Different actions
78 based on the NPC's state.
79 @return: None"""
80 if self.state == _AGENT_STATE_NONE:
81 self.state = _AGENT_STATE_IDLE
82 self.agent.act('stand', self.agent.getFacingLocation())
83 elif self.state == _AGENT_STATE_IDLE:
84 if self.wanderCounter > self.wanderRate:
85 self.wanderCounter = 0
86 self.state = _AGENT_STATE_WANDER
87 else:
88 self.wanderCounter += 1
89 self.state = _AGENT_STATE_NONE
90
91 self.target_loc = self.getTargetLocation()
92 self.agent.act('stand', self.agent.getFacingLocation())
93 elif self.state == _AGENT_STATE_WANDER:
94 self.parent.wander(self.target_loc)
95 self.state = _AGENT_STATE_NONE
96 elif self.state == _AGENT_STATE_TALK:
97 self.agent.act('stand', self.pc.getLocation())