Question by Pkmans · Jan 18, 2021 at 06:15 PM · rigidbody movement script speed issues

Rigidbody character, normalize diagonal speed without limiting external rb.addforces?

Hi! I know normalizing the diagonal velocity is the popular method of fixing faster diagonal speed, but that also means my character cannot go faster than that even from external forces, for example if an explosion happened, the character wouldn't be able to launch away at a faster speed. I have a rigidbody character in Unity3D that I use rb.addforces to control. To limit it's speed I basically zero out my input if my velocity is greater than the maxSpeed.

I know I can probably increase the maxSpeed in events like explosions and dashes etc but is there a solution around this? Becus changing the maxSpeed for every event in the future might be a hassle.

Here's a snippet of my player movement code (without any normalizing):

   void Move() {
         float x = Input.GetAxisRaw("Horizontal");
         float z = Input.GetAxisRaw("Vertical");
 
         //vel relative to look direction
         float xVel = vel.x;
         float zVel = vel.y;
 
         //no input if exceeding max speed
         if (x > 0 && xVel > maxSpeed) x = 0;
         if (x < 0 && xVel < -maxSpeed) x = 0;
         if (z > 0 && zVel > maxSpeed) z = 0;
         if (z < 0 && zVel < -maxSpeed) z = 0;
 
         // normalize diagonal speed and remove input if sliding
         Vector2 flatVel = new Vector2(rb.velocity.x, rb.velocity.z);
         if (Mathf.Abs(flatVel.magnitude) > maxSpeed || isSliding) {
             x = 0;
             z = 0;
         }
 
         CounterMovement(x, z);
 
         //move forward and sideways
         rb.AddForce(transform.forward * z * moveSpeed);
         rb.AddForce(transform.right * x * moveSpeed);
    
         //change direction of player faster
         if (zVel > 0.2f && z < 0) rb.AddForce(-transform.forward * turnSpeed);   
         if (zVel < -0.2f && z > 0) rb.AddForce(transform.forward * turnSpeed);  
         if (xVel > 0.2f && x < 0) rb.AddForce(-transform.right * turnSpeed);   
         if (xVel < -0.2f && x > 0) rb.AddForce(transform.right * turnSpeed);
 
         // //max speed check
         // Vector2 flatVel = new Vector2(rb.velocity.x, rb.velocity.z);
         // if (flatVel.magnitude > maxSpeed) {
         //     flatVel = flatVel.normalized * maxSpeed;
         //     rb.velocity = new Vector3(flatVel.x, rb.velocity.y, flatVel.y);
         // }
     }

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