I have been using UNITY for almost 3 months now. I have a crouch script working that activates when I press LEFT SHIFT...Everything works fine, except everything parented to the player controller shrinks and warps as well via scale. When looking up and down, I have a camera (equipped) that is now suspended in front of the player and warped vertically..! :o So I know that it has to do with the scale command and that I should call directly the player controller HEIGHT variable instead but so far I haven't figured out the code for it...

Many times i would fall right through the floor when crouching but i did manage to fix that by modifying the controller radius.

Here is my current script for crouch and run. (I am going to try and learn as much JAVA as I can as well!I really enjoy learning this...custom everything!) I am basically trying to avoid distorting children items (or scale altogether)

//RUN.js

var walkSpeed: float = 7; // regular speed
var crchSpeed: float = 3; // crouching speed
var prnSpeed: float = 1; // crouching speed
var runSpeed: float = 20; // run speed *high for saving testing time

private var chMotor: CharacterMotor;
private var tr: Transform;
private var dist: float; // distance to ground

function Start(){
    chMotor = GetComponent(CharacterMotor);
    tr = transform;
    var ch:CharacterController = GetComponent(CharacterController);
    dist = ch.height/2; // calculate distance to ground
}

function Update(){

    var vScale = 1.0;
    var speed = walkSpeed;
    
    if (Input.GetKey("left ctrl") || Input.GetKey("right ctrl")){
        speed = runSpeed;
    }
    if (Input.GetKey("left shift")){
        vScale = 0.55;
        speed = crchSpeed; // slow down when crouching
    }
    if (Input.GetKey("left alt")){
        vScale = 0.27;
        speed = prnSpeed; // slow down when prone
    }
    chMotor.movement.maxForwardSpeed = speed; // set max speed
    var ultScale = tr.localScale.y; // crouch/stand up smoothly 
    tr.localScale.y = Mathf.Lerp(tr.localScale.y, vScale, 5*Time.deltaTime);
    tr.position.y += dist * (tr.localScale.y-ultScale); // fix vertical position
}