PhysicsManager issue

C++ coding using Panda3D
1

I’m trying to create C++ application that simulates Newtown’s law of Gravitation. But currently I have a problem with PhysicsManager.

PhysicsManager:
  _physicals (2 physicals)
    Physical
      _physics_objects (1 objects)
        PhysicsObject
          _position 0 0 0
          _last_position 0 0 0
          _velocity 0 0 0
          (implicit velocity 0 0 0)
          _orientation 1 + 0i + 0j + 0k
          (hpr 0 0 0)
          _rotation 1 + 0i + 0j + 0k
          _terminal_velocity 400
          _mass 1
          _process_me 1
          _oriented 1
      _linear_forces (2 forces)
        LinearVectorForce:
          _fvec 0 0 0
          LinearForce (id 02D16E8C)
            _amplitude 0
            _mass_dependent 1
            _x_mask 1
            _y_mask 1
            _z_mask 1
            BaseForce (id 02D16E8C):
              _force_node render/myRender/Render Force Node
              _active 1
        LinearVectorForce:
          _fvec 10 0 0
          LinearForce (id 02BFB544)
            _amplitude 0
            _mass_dependent 0
            _x_mask 1
            _y_mask 1
            _z_mask 1
            BaseForce (id 02BFB544):
              _force_node render/myRender/Render Force Node
              _active 1
      _angular_forces (0 forces)
      _phys_body
        PhysicsObject
          _position 0 0 0
          _last_position 0 0 0
          _velocity 0 0 0
          (implicit velocity 0 0 0)
          _orientation 1 + 0i + 0j + 0k
          (hpr 0 0 0)
          _rotation 1 + 0i + 0j + 0k
          _terminal_velocity 400
          _mass 1
          _process_me 1
          _oriented 1
    Physical
      _physics_objects (1 objects)
        PhysicsObject
          _position 0 0 0
          _last_position 0 0 0
          _velocity 0 0 0
          (implicit velocity 0 0 0)
          _orientation 1 + 0i + 0j + 0k
          (hpr 0 0 0)
          _rotation 1 + 0i + 0j + 0k
          _terminal_velocity 400
          _mass 1
          _process_me 1
          _oriented 1
      _linear_forces (1 forces)
        LinearVectorForce:
          _fvec 0 0 0
          LinearForce (id 02D19FFC)
            _amplitude 0
            _mass_dependent 1
            _x_mask 1
            _y_mask 1
            _z_mask 1
            BaseForce (id 02D19FFC):
              _force_node render/myRender/Render Force Node
              _active 1
      _angular_forces (0 forces)
      _phys_body
        PhysicsObject
          _position 0 0 0
          _last_position 0 0 0
          _velocity 0 0 0
          (implicit velocity 0 0 0)
          _orientation 1 + 0i + 0j + 0k
          (hpr 0 0 0)
          _rotation 1 + 0i + 0j + 0k
          _terminal_velocity 400
          _mass 1
          _process_me 1
          _oriented 1
  _linear_forces (0 forces)
  _angular_forces (0 forces)
  _linear_integrator:
    LinearEulerIntegrator:
      LinearIntegrator:
        _max_linear_dt 0.0333333 (class static)
        BaseIntegrator:
          _precomputed_linear_matrices
            [ 1 0 0 0 ] [ 0 1 0 0 ] [ 0 0 1 0 ] [ 0 0 0 1 ]
          _precomputed_angular_matrices
  _angular_integrator:
    null

Everything seems to be good.
Forces are in Physicals and also in Force-Nodes. Angular Integrator is attached.
Physics manager,forces,actor_nodes seems to exist in main_loop.
Geom nodes reparented to actor nodes.

I’m calling do_physics every frame, but - nothing’s working.:smiling_imp:

Please tell - what’s missing?

2

I guess there wasn’t enough information there for people to guess what’s going wrong. Have you found a solution yet?

David