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Question by Jotaro89 · Jan 09, 2014 at 04:09 AM · javascriptartificial intelligence

Can Someone Help Me With This A.I. Script?

Hello. I recently copied some code from a post made on this forum for a simple A.I. Javascript. Everything worked for the most part, except the enemy rotates whenever they attack my player. This is fine for 3D games, but I'm working on a 2D game. For reference, here's the script:

 var target : Transform; //the enemy's target
 var moveSpeed = 3; //move speed
 var rotationSpeed = 3; //speed of turning
  
 var myTransform : Transform; //current transform data of this enemy
  
 function Awake()
 {
     myTransform = transform; //cache transform data for easy access/preformance
 }
  
 function Start()
 {
      target = GameObject.FindWithTag("Player").transform; //target the player
  
 }
  
 function Update () {
     //rotate to look at the player
     myTransform.rotation = Quaternion.Slerp(myTransform.rotation,
     Quaternion.LookRotation(target.position - myTransform.position), rotationSpeed*Time.deltaTime);
  
     //move towards the player
     myTransform.position += myTransform.forward * moveSpeed * Time.deltaTime;
  
  
 }

I tried changing the rotation speed to zero and commenting out the lines that set up rotation in the Update function, but my enemy doesn't move at all when I do either of those things. Am I doing something wrong, or should I come up with a new script altogether? Thanks in advance to anyone who answers this.

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Answer by MrProfessorTroll · Jan 09, 2014 at 04:40 AM

Take out this part:

  //rotate to look at the player
         myTransform.rotation = Quaternion.Slerp(myTransform.rotation,
         Quaternion.LookRotation(target.position - myTransform.position), rotationSpeed*Time.deltaTime);

Grab the player's transform.

 function Start()
     {
          target = GameObject.FindWithTag("Player").transform;
     }

Then check if the player is to the left or right of ai.

 if(target.position.x >= myTransform.position.x)
 {
 //The target is on the right so move to the right
 myTransform.position.x += moveSpeed * Time.deltaTime;
 //Flip the ai to face the player
 myTransform.localScale.x = 1;
 }
 if(target.position.x < myTransform.position.x)
 {
 //The target is on the left so move to the left
 myTransform.position.x -= moveSpeed * Time.deltaTime;
 //Flip the ai to face the player
 myTransform.localScale.x = -1;
 }
 
 //You might have to switch around the numbers on the myTransform.localScale.x if the ai is facing the wrong way. Good luck
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avatar image Jotaro89 · Jan 09, 2014 at 04:54 AM 1
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Tried it out just now. It works perfectly! Thank you very much.

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