Add impulse to Kinematic Body?

[Neo]

So far I know that Kinematic body wouldn't interact with dynamic bodies,
however I also dicovered that NewtonBodyAddImpulse do not work with Kinematic bodies.
So what can I do when I need to add impulse to the Kinematic body? (The only Kinematic body in the scene is player controller,
I need it react to the explosion happened nearby)

[PJani]

Actually you can't, you could write your own logics for that sequence. Kinematic body is "static" without any dynamics forces...

[Neo]

Actually you can't, you could write your own logics for that sequence. Kinematic body is "static" without any dynamics forces...

Can can get the Kinematic body via NewtonWorldForEachBodyInAABBDo ?

[Julio Jerez]

if you are using the CustomPlayerControllerManager, it has a update funtion where you are in control, o fteh player velociy
the callcack look like this

Code: Select all

   virtual void ApplyPlayerMove (CustomPlayerController* const controller, dFloat timestep)
   {
      NewtonBody* const body = controller->GetBody();

      BasicPlayerEntity* const player = (BasicPlayerEntity*) NewtonBodyGetUserData(body);
      PlayerInputs (controller, timestep);

                     
      // calculate desired linear and angular velocity form the input
      dVector gravity (0.0f, DEMO_GRAVITY, 0.0f, 0.0f);

      // set player linear and angular velocity
      controller->SetPlayerVelocity (player->m_forwarSpeed, player->m_strafeSpeed, player->m_jumpSpeed, player->m_headinAngle, gravity, timestep);

                                // here you apply the velocity explsion velocity.  something like.
                                expVelocity  = expVelocity - expVelocity.Scale (timestep * 0.25);
                               // when the explsion havvemen you set expVelocity to the velocity that the impulse will create, then expVelocity will be reduce gradually
                                dVcetor veloc;
                                NewtonBodySetVelocity (player, veloc);
                                veloc += expVelocity ;
                               NewtonBodySetVelocity (player, expVelocity );
   }

you can do some experimentation untill you get wan you want.

Can can get the Kinematic body via NewtonWorldForEachBodyInAABBDo ?

is that right? kinamtic bodies are bodies, NewtonWorldForEachBodyInAABBDo should collect players if they are in the AABB o fteh scan

[Neo]

Oh...Typing error,sorry

if you are using the CustomPlayerControllerManager, it has a update funtion where you are in control, o fteh player velociy
the callcack look like this

Code: Select all

                             // when the explsion havvemen you set expVelocity to the velocity that the impulse will create, then expVelocity will be reduce gradually
                                dVcetor veloc;
                                NewtonBodySetVelocity (player, veloc);
                                veloc += expVelocity ;
                               NewtonBodySetVelocity (player, expVelocity );
   }

The NewtonBodySetVelocity is called twice. Is it this code:

Code: Select all

 dVcetor veloc;
                                NewtonBodyGetVelocity (player, veloc);
                                veloc += expVelocity ;
                               NewtonBodySetVelocity (player, expVelocity );

And What's the type of expVelocity? dVector?

[Julio Jerez]

Code: Select all

 dVcetor veloc;
                                NewtonBodyGetVelocity (player, veloc);
                                veloc += expVelocity ;
                               NewtonBodySetVelocity (player, expVelocity );

yes this is correct

And What's the type of expVelocity? dVector?

this would be teh velocity that teh explision impusle wants to apply to the player.