How to create an AI follow script in Java?

Alrighty, here's my final code: (I took some parts of a previous Angel Script I found floating around and applied a few adjustments. The Weeping Angel now follows the player whenever the it is not being Rendered. It will freeze whenever it IS rendered. Also, I've added a few additional "jumpscare" features such as if the player looks at it, a sound will play. No need for tagging stuff. Make sure both target and pos are the Player's character.

 //target to follow
 var target : Transform;
      
 //Checks his position, used to follow the target
 var pos : Transform;
      
 //Ray variables (Length... etc.)
 var rayLength : float;
      
 //Movement, speed etc.
 var speed : float;
      
 //You can move if he is not being looked at
 var move : boolean = false;
 
 //Sets the sound effect trigger to be false at start
 var soundTrigger : boolean = false;
 
 //Defines your sound effect
 public var Sound : AudioClip;
 
 //Defines whether the sound has been played before.
 private var HasPlayed : boolean = false;
 
      
 //I had problems with my model sinking into the floor, adjust this variable if you need it, or remove it
 /*function FixedUpdate()
 {
 transform.position.y = 30;
 transform.rotation.x = 0;
 transform.rotation.z = 0;
 }*/
      
 function Update()
 {
     //Setting up Raycast variables for simple object avoidance
     var fwd = transform.TransformDirection (Vector3.forward);
     var hit : RaycastHit;
     
     //If you are looking at the object...
     if (renderer.isVisible)
     {
     move = false;
     soundTrigger = true;
     }
        
     //If you are NOT looking at the object...
     if(!renderer.isVisible)
     {
     move = true;
     //resets sound variables
     HasPlayed = false;
     soundTrigger = false;
     }
      
     //If you are not looking at the object...
     if(move)
     {
     //Make him look at the target
     transform.LookAt(target);
     //Always follow the target
     transform.Translate(Vector3.forward * speed * Time.deltaTime);
     }
             //Sets the sound effect componnet. If the player is looking, the sound will play.
             if (soundTrigger)
             {
                 //Make sure the sound effect has not been played before. (Without this, this tends to lead to a repeated playing of the sound effect with every frame
                 if(!HasPlayed)
                 {
                 audio.PlayOneShot(Sound);
                 //Sets boolean to define that the above sound has been play already, and does not need to be played again while the player is looking at the target.
                 HasPlayed = true;
                 }
             }
     //If he is 3 units away from something, move right (Works if you are not looking at the object)
     if (Physics.Raycast (transform.position, fwd, rayLength) && move)
     {
     Debug.Log("Something ahead, moving");
     transform.Translate(Vector3.right * 3 * Time.deltaTime);
     }
 }

This script below should be used as the initial setup:

 var walkSpeed = 3.0;
 var rotateSpeed = 30.0;
 var attackSpeed = 9.0;
 var attackRotateSpeed = 100.0;
 var directionTraveltime = 2.0;
 var idletime = 1.5;
 var attackDistance = 10.0;
 var damage = 2;
 var viewAngle = 20.0;
 var attackRadius = 1.0;
 var attackPosition = new Vector3 (0,1,0);
 
 private var isAttacking = false;
 private var lastAttackTime = 0.0;
 private var nextPauseTime = 0.0;
 private var distanceToPlayer;
 private var timeToNewDirection = 0.0;
 
 var target : Transform;

 
 private var characterController : CharacterController;
 characterController = GetComponen(Charactercontroller);

Now use this:

 function start()
 {
 if(!target) 
 target = GameObject.FindWithtag("Player").transform;
 }
 
 //add all your animation stuff here or take animation variables away.
 
 
 function Idle()
 {
 var walkForward = transform.TransformDirection(Vector3.forward);
 characterController.SimpleMove(walkForward * walkSpeed);
 distanceToPlayer = transform.position - target.position;
 //when you find the player
 if (distanceToPlayer.magnitude <attackdistcance) return;
 yield;
 }

Some of the variables will not be needed if so just delete them

I have just writting this all out new, so please take the time to thumb this up, many thanks.

James