64 lines
2 KiB
Python
64 lines
2 KiB
Python
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from pandac.PandaModules import *
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from direct.showbase.PythonUtil import reduceAngle
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from otp.movement import Impulse
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class PetFlee(Impulse.Impulse):
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def __init__(self, chaser = None, maxDist = 50.0, moveAngle = 20.0):
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Impulse.Impulse.__init__(self)
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self.chaser = chaser
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self.maxDist = maxDist
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self.moveAngle = moveAngle
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self.lookAtNode = NodePath('lookatNode')
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self.lookAtNode.hide()
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self.vel = None
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self.rotVel = None
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return
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def destroy(self):
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self.lookAtNode.removeNode()
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del self.lookAtNode
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del self.chaser
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del self.vel
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del self.rotVel
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def setChaser(self, chaser):
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self.chaser = chaser
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def _setMover(self, mover):
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Impulse.Impulse._setMover(self, mover)
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self.lookAtNode.reparentTo(self.nodePath)
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self.vel = self.VecType(0)
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self.rotVel = self.VecType(0)
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def _process(self, dt):
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Impulse.Impulse._process(self, dt)
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me = self.nodePath
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chaser = self.chaser
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chaserPos = chaser.getPos(me)
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chaserPos.setZ(0)
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distance = self.VecType(chaserPos).length()
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self.lookAtNode.lookAt(chaser)
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relH = reduceAngle(self.lookAtNode.getH(me) + 180.0)
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epsilon = 0.005
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rotSpeed = self.mover.getRotSpeed()
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if relH < -epsilon:
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vH = -rotSpeed
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elif relH > epsilon:
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vH = rotSpeed
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else:
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vH = 0
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if abs(vH * dt) > abs(relH):
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vH = relH / dt
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if distance < self.maxDist and abs(relH) < self.moveAngle:
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vForward = self.mover.getFwdSpeed()
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else:
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vForward = 0
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distanceLeft = self.maxDist - distance
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if distanceLeft > 0.0 and vForward * dt > distanceLeft:
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vForward = distanceLeft / dt
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self.vel.setY(vForward)
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self.rotVel.setX(vH)
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self.mover.addShove(self.vel)
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self.mover.addRotShove(self.rotVel)
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