Movement along X and Z axis...

Question

I want to rotate my character to face the mouse cursor. The script here does not do that, it rotates across X and Y. I want it to rotate across X and Z only. Can anyone help me?

The script is here:

 using UnityEngine;
 using System.Collections;
  
 public class MouseLook : MonoBehaviour {
  
 void Update () {
            Vector3 mousePos = new Vector3(Input.mousePosition.x, Input.mousePosition.y, 10);
            Vector3 lookPos = Camera.main.ScreenToWorldPoint(mousePos);
            lookPos = lookPos - transform.position;
            float angle = Mathf.Atan2(lookPos.y, lookPos.x) * Mathf.Rad2Deg;
            transform.rotation = Quaternion.AngleAxis(angle, Vector3.forward);
  
         }
     }

Thanks in advance! :D

Answer 1

Answer by CodeElemental · Mar 03, 2014 at 08:26 AM

 void Update () {
            Vector3 mousePos = new Vector3(Input.mousePosition.x, Input.mousePosition.y, 10);
            Vector3 lookPos = Camera.main.ScreenToWorldPoint(mousePos);
            transform.LookAt(lookPos);
  
         }

This should work.

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NoahConstable · Mar 03, 2014 at 08:29 AM 1

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I was actually about to post (almost) exactly that! Well hope it works, Dubstep.

DubstepDragon · Mar 03, 2014 at 04:02 PM 0

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It works... kinda.

It ins$$anonymous$$d keeps one face looking at the cursor... However, I want it just to rotate around the Y-axis, similar to the AngryBots demo, but only in rotation. I think your script works the right way, however I need it to only rotate around the Y. I tried freezing the rotation with a RigidBody, however it does not work :'(

Can you help me with this please? :D

DubstepDragon · Mar 03, 2014 at 04:06 PM 0

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It's a top-down game :D

CodeElemental · Mar 03, 2014 at 04:08 PM 1

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If you're using some form of isometric perspective, it's possible that you need to swap the Y and Z coordinates.

Can you elaborate a bit more on what behaviur are you getting , i can't understand the one-face looking part?

DubstepDragon · Mar 03, 2014 at 06:21 PM 0

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I want the character to always be facing the cursor, via rotation. This is as in the character is standing. The script you gave me makes him face the air when the cursor is nearby. As I already suggested about twice, I want it similar to the AngryBots demo.

Thanks in advance! :D

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Answer 2

Answer by wibble82 · Mar 03, 2014 at 09:06 AM

The simplest solution to your problem has already been posted above - you take the mousePos, ask the camera for the position that corresponds to world space, then set the transform to look at that point. This however will cause your character to look directly at the mouse, meaning they may end up at an odd angle (for example, if the new position is high above the charachter, it'll end up 'lieing down'. A small modification to the earlier code might be:

 void Update () 
 {
     //get the mouse position and convert it to world space
     Vector3 mousePos = new Vector3(Input.mousePosition.x, Input.mousePosition.y, 0);     
     Vector3 lookPos = Camera.main.ScreenToWorldPoint(mousePos);
 
     // clamp the y coordinate to the same height as the player so the character doesn't face upwards
     lookPos.y = transform.position.y; 
 
     //force the character to look at the player (specify the up vector as well to get best results!)
     transform.LookAt(lookPos,Vector3.up);
 }

Hope that helps!

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DubstepDragon · Mar 03, 2014 at 04:00 PM 0

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Sorry, but the script doesn't work :'(

Movement along X and Z axis...

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