How to disable collision handler pusher temporarily?

Scripting Issues
1

I’m trying to disable the collision handler pusher on “smiley” temporarily by doing .stash() on it but it’s not working. “smiley” still gets pushed by “frowney” and the event “smiley-into-frowney” still fires. How can I fix this?
Here’s an example showing this

from panda3d.core import CollisionTraverser, CollisionHandlerPusher, CollisionNode, CollisionSphere
from direct.showbase.ShowBase import ShowBase
from math import cos

class Scene(ShowBase):
    def __init__(self):
        super().__init__()

        self.cam.setY(-15)

        self.smiley = self.loader.loadModel("models/smiley")
        self.smiley.reparentTo(self.render)
        self.frowney = self.loader.loadModel("models/frowney")
        self.frowney.reparentTo(self.render)


        self.cTrav = CollisionTraverser()

        self.smileyColNp = self.smiley.attachNewNode(CollisionNode('smiley'))
        self.smileyColNp.node().addSolid(CollisionSphere(center=(0, 0, 0), radius=1))

        self.frowneyColNp = self.frowney.attachNewNode(CollisionNode('frowney'))
        self.frowneyColNp.node().addSolid(CollisionSphere(center=(0, 0, 0), radius=1))

        self.pusher = CollisionHandlerPusher()
        self.pusher.addInPattern("smiley-into-frowney")
        self.pusher.addCollider(self.smileyColNp, self.smiley)
        self.cTrav.addCollider(self.smileyColNp, self.pusher)

        # ???????
        self.smileyColNp.stash()

        self.accept("smiley-into-frowney", lambda _event: print("smiley collided into frowney!"))
        
        self.taskMgr.add(self.update, "update")
    
    def update(self, task):
        self.frowney.setPos(cos(2*task.time)*5, 0, 0)

        return task.cont

scene = Scene()
scene.run()
2

stash() only will have an effect on into nodes, not on from nodes.

To disable a from collider, set its from collision mask to 0 or remove it from the traverser/pusher.

1 Like
3

I must’ve mistakenly thought that self.smiley was the into node. I did .stash() on self.frowney and that worked! Thank you so much