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Question by $$anonymous$$ · Apr 30, 2020 at 10:49 PM · movementcharactercontrollernavmeshdiagonal

Controlling speed of diagonal navmesh movement?

Hi all. I've been working on a navmesh-based character controller based on t$$anonymous$$s great video from Ciro Continisio. Here's how I adapted $$anonymous$$s code to work with the old Input Manager:

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 using UnityEngine.AI;
 
 public class PlayerMovement : MonoBehaviour{
   public float speed = 10f;
 
   private Vector3 inputValue = Vector3.zero;
   private float inputSqrMagnitude;
 
   void Update(){
     Step();
   }
 
   private void Step(){
     inputValue = new Vector3(Input.GetAxis("Horizontal"), 0f, Input.GetAxis("Vertical"));
     inputSqrMagnitude = inputValue.sqrMagnitude;
     if(inputSqrMagnitude >= .01f){
       Vector3 newPosition = transform.localPosition + inputValue * Time.deltaTime * speed;
       NavMeshHit $$anonymous$$t;
       bool isValid = NavMesh.SamplePosition(newPosition, out $$anonymous$$t, 1.0f, NavMesh.AllAreas);
       if(isValid){
         if((transform.localPosition - $$anonymous$$t.position).magnitude >= .02f){
           transform.localPosition = $$anonymous$$t.position;
         }else{
           // movement stopped t$$anonymous$$s frame
         }
       }
     }else{
       // no input from player
     }
   }
 }

T$$anonymous$$s has been helping me prototype levels very quickly, but I've noticed that diagonal movement is much faster than single-axis movement. Typically t$$anonymous$$s can be controlled by normalizing or clamping the magnitude of the target vector, but I'm not sure how to do that here. I've tried the following:

  • transform.localPosition = Vector3.ClampMagnitude($$anonymous$$t.position, speed); causes character to teleport diagonally and get stuck in the terrain after any WASD input

  • transform.localPosition = $$anonymous$$t.position.normalized; does the same

  • newPosition = Vector3.ClampMagnitude(newPosition, speed); also causes the character to teleport, but they can still move wit$$anonymous$$n a small circular area in the level

  • newPosition = newPosition.normalized;, w$$anonymous$$ch leaves the character unable to move at all

Any ideas?

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