python
from direct.showbase.ShowBase import ShowBase
from panda3d.core import Point3
from panda3d.bullet import BulletWorld, BulletSphereShape, BulletRigidBodyNode
class MyApp(ShowBase):
def __init__(self):
ShowBase.__init__(self)
self.world = BulletWorld()
shape = BulletSphereShape(1)
body = BulletRigidBodyNode("Sphere")
body.add_shape(shape)
node = self.render.attach_new_node(body)
self.world.attach_rigid_body(node.node())
node.set_pos(0, 0, 10)
body.set_mass(1)
body.set_gravity(Point3(0, 0, -9.81))
self.accept("enter_collision", self.on_collision)
def on_collision(self, entry):
print("Collision occurred!")
app = MyApp()
app.run()
