How to set limits to a player rotating an object

Question

For practice, I'm making a game which is like one of those maze games where you rotate the maze itself and direct a ball, avoiding holes. I've managed to allow the maze's rotation to be controlled by the player. However, I can't figure out how to stop the maze from rotating past 30 degrees.

Here's my script that controls this:

 using UnityEngine;
 using System.Collections;
 
 public class MazeController : MonoBehaviour {
 
     public GameObject maze;
     // Use this for initialization
     void Start () 
     {
     
     }
 
     void FixedUpdate () 
     {
         float rotateEW = Input.GetAxis("Vertical");
         float rotateNS = Input.GetAxis("Horizontal");
         if (maze.transform.rotation.x < 30.0)
         {
             maze.transform.Rotate(0.0f, 0.0f, rotateNS);
         }
         if (maze.transform.rotation.z < 30.0)
         {
             maze.transform.Rotate(rotateEW, 0.0f, 0.0f);
         }
     }
 }

Answer 1

Answer by toromano · Jun 02, 2016 at 08:02 AM

Do not directly set euler angles. Use quaternions instead. Here is sample script. I hope you fnd is useful:

 public class RotationTest : MonoBehaviour {
 
     float xangle;
     float zangle;
     // Update is called once per frame
     void Update ()
     {
         zangle += Input.GetAxis("Horizontal");
         xangle += Input.GetAxis("Vertical");
         zangle = Mathf.Min(Mathf.Max(zangle, -30.0f),30.0f);
         xangle = Mathf.Min(Mathf.Max(xangle, -30.0f), 30.0f);
         this.transform.rotation = Quaternion.AngleAxis(xangle, Vector3.right) * Quaternion.AngleAxis(-zangle, Vector3.forward);
     }
 }

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SolunaGD · Jun 03, 2016 at 01:35 AM 0

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This worked, but to a certain extent. Unfortunately, the rotation will be locked when it hits either 1 degree or 359 degrees on both axis. I tried replacing the vector3.right and vector3.forward with the proper limits at their respective axis, but to no avail. If you have a solution to this, I would appreciate if you would tell me.

toromano SolunaGD · Jun 03, 2016 at 11:58 AM 0

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Did you try the code as is? Or you did some modifications? Because when i added the script on a cube, i don't see any limits other than +- 30 degrees

SolunaGD toromano · Jun 03, 2016 at 11:17 PM 0

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That's strange, I have it as-is but it cannot be rotated past 0 or 359 degrees

How to set limits to a player rotating an object

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