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#This file is distributed under the terms of the GNU General Public license.
#Copyright (C) 2007 Al Riddoch (See the file COPYING for details).
from atlas import *
from physics import *
from Vector3D import Vector3D
try:
from random import *
except ImportError:
from whrandom import *
from mind.goals.dynamic.DynamicGoal import DynamicGoal
class chase(DynamicGoal):
def __init__(self, kinds, desc="Chase after things."):
DynamicGoal.__init__(self, trigger="sight_move", desc=desc)
self.kinds = kinds
def event(self, me, original_op, op):
# FIXME Now that this code is trigger goal, has this update been done?
other = me.map.update(op[0], op.getSeconds())
if other.id==me.id: return
#target=op[0].location.copy()
if other.location.parent.id!=me.location.parent.id: return
if hasattr(other, "type") and other.type[0] not in self.kinds: return
destination=other.location.coordinates
distance=destination.distance(me.location.coordinates)
if distance<1: return
# CHeat, random chance that it ignores movement
if uniform(0, 30/distance)<1: return
target=Location(me.location.parent)
velocity=destination-me.location.coordinates
if velocity.mag()==0: return
target.velocity=velocity.unit_vector()
target.coordinates=destination
return Operation("move", Entity(me.id, location=target))
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