Simple Logic

Troubleshooting physics
1

I know its simple logic but i'm having slight difficulties getting tis implementation to work in the begining I set the RUN boolean to true just in order to getting a theoretical working one however 1 it doesn't accelerate and two i don't think its the best way since I want RUN to be true after everything is said and done


/**
    * Accelerates uniformly until maxSpeed is met and then decelerates to desiredForce
    * @param desiredForce
    * @param acceleration
    * @param direction
    * @param maxSpeed
    * @preCondition {@link characterMove#move(int scale, Vector3f direction)} is called
    */
   public void moveForward(int desiredForce, float acceleration, Vector3f direction, int maxSpeed){
      
      if (desiredForce == 0){
         rotAxis.setDesiredVelocity(0);
        }else{
           if(direction!=null){rotAxis.setDirection(direction);}
           if(RUN)
           {   rotAxis.setDesiredVelocity(maxSpeed);
              rotAxis.setAvailableAcceleration(acceleration/(desiredForce*10));
              if(rotAxis.getVelocity()>maxSpeed-1){RUN=false;}
           }else{System.out.println("check");
              rotAxis.setDesiredVelocity( desiredForce );
              rotAxis.setAvailableAcceleration( acceleration );
              RUN=false;
                }
            }
   }

2

Hi.



I don't know if I got your point and a bit more code could help to understand your problem. For example I don't know of what class rotAxis is and what you are using (Joints?). But actually I am not the master in jme-physics, so…



The logic seems to be right, the machine has to go into the if-branch if RUN is set to true. The only thing you can do better there is to delete the line RUN=false because it has to be false if the machine reaches this line. So this isn't necessary.



I don't know how your architecture looks like, but I would simply apply forces with the addForce()-method to the DynamicPhysicsNode you probably use. I think the problem is in using the setDesiredVelocity()- and setAvaiableAcceleration()-methods.