How do i make my Sprint increase slowly?

Questions & Answers
1

so i have this code and ive tryed co-routines but they dont work and it just bugs up, and ive tryed changing the speed by Time.deltaTime, but that doesnt work, any ideas on how to make my player slowly start to sprint?

var walkSpeed: float = 7; // regular speed
var runSpeed: float = 20; // run speed
 
private var chMotor: CharacterMotor;
private var ch: CharacterController;
private var tr: Transform;
private var height: float; // initial height
 
function Start(){
    chMotor = GetComponent(CharacterMotor);
    tr = transform;
    ch = GetComponent(CharacterController);
}
 
function Update(){
 
    var h = height;
    var speed = walkSpeed;
    
    if (ch.isGrounded && Input.GetKey("left shift") || Input.GetKey("right shift") && speed < runSpeed){
    speed = runSpeed;
       chMotor.movement.maxForwardSpeed = speed;
             }
       chMotor.movement.maxForwardSpeed = speed; // set max speed
}
2

You could try using linear interpolation to smooth out the increase of speed over time. Eg.

chMotor.movement.maxForwardSpeed = Mathf.Lerp(oldMaxSpeed, newMaxSpeed, Time.time)