Problems with limiting angles

Questions & Answers
1

Hello, I am in dire need of help here. What I’m trying to achieve is some kind of limit to an object’s rotation. I’m working on a game about table soccer where roulettes aren’t allowed on some tables, but to limit the rotation of the handles just seems impossible. I’ve looked at other questions but I couldn’t implement none of them in it. The handles right now are just 1 floating rectangle in the middle of the field, for testing reasons. The code is as follows:

using UnityEngine;
using System.Collections;

public class ctrl : MonoBehaviour {
	
	public GameObject handle1;
	public GameObject handle2;
	public GameObject handle3;
	public GameObject handle4;
	public float handler = 0.00f;
	
	// Update is called once per frame
	void Update () {

		//Everything needs a limit; even the rotation of the handles.

		//The first handle's limits
		if (handle1.transform.rotation.x < -80)
		{
			handle1.transform.rotation = Quaternion.Euler(-80,0,0);
			Debug.Log("gud1");
		}
		if (handle1.transform.rotation.x > 110)
		{
			handle1.transform.rotation = Quaternion.Euler(110,0,0);
		}

		//The second handle's limits
		if (handle2.transform.rotation.x < -80)
		{
			handle2.transform.rotation = Quaternion.Euler(-80,0,0);
		}
		if (handle2.transform.rotation.x > 110)
		{
			handle2.transform.rotation = Quaternion.Euler(110,0,0);
		}
		
		//The third handle's limits
		if (handle3.transform.rotation.x < -80)
		{
			handle3.transform.rotation = Quaternion.Euler(-80,0,0);
		}
		if (handle3.transform.rotation.x > 110)
		{
			handle3.transform.rotation = Quaternion.Euler(110,0,0);
		}
		
		//The fourth handle's limits
		if (handle4.transform.rotation.x < -80)
		{
			handle4.transform.rotation = Quaternion.Euler(-80,0,0);
		}
		if (handle4.transform.rotation.x > 110)
		{
			handle4.transform.rotation = Quaternion.Euler(110,0,0);
		}

		handle1.transform.Rotate(handler,0,0);
		handle2.transform.Rotate(handler,0,0);
		handle3.transform.Rotate(handler,0,0);
		handle4.transform.Rotate(handler,0,0);
		
		//Left
		if (Input.GetAxis("Mouse X")<0)
		{
			handler += 2.50f;
			Debug.Log("Mouse moved left");
		}
		if (handler > 0)
		{
			handler -= 1.25f;
		}
		if (handler > 5.00f)
		{
			handler = 5.00f;
		}
		//Right
		if (Input.GetAxis("Mouse X")>0)
		{
			handler -= 2.50f;
			Debug.Log("Mouse moved right");
		}
		if (handler < 0)
		{
			handler += 1.25f;
		}
		if (handler < -5.0f)
		{
			handler = -5.0f;
		}
	}
}

I’ve tried that but nothing seems to change. I’ve also tried transform.rotation.x but it just gives errors out because apparently that statement is read-only and can’t be edited separatedly.

2

@Marcos42563 From what I see in the code, it appears to me you are trying to rotate the paddle about the x-axis and are trying to constrain limits at how far each handle can turn or rotate.

I don’t know if this will help but I do have code that you can probably look over that deals with limiting angle rotations here:

	public float turn_speed;
	private float turn_velocity;
	public float minAngle,maxAngle;
	//angles to modify for turning.
	private float x,y,z;

	void Start()
	{
		//set x,y,z angles to modify
		x = transform.eulerAngles.x;
		y = transform.eulerAngles.y;
		z = transform.eulerAngles.z;

		//convert frames per second to units per second movement.
		turn_velocity = turn_speed * Time.deltaTime;
	}

	void Update()
	{
		RotateArrow ();
		LaunchBall ();
	}
	void RotateArrow()
	{
		//right
		if(Input.GetKey(KeyCode.D))
		{
			z -= turn_velocity;
		}
		//left
		if(Input.GetKey (KeyCode.A))
		{
			z += turn_velocity;
		}
		
		//restrict angle of rotation
		z = Mathf.Clamp (z, minAngle, maxAngle);
		
		//set rotate Angle to game Object
		transform.eulerAngles = new Vector3 (x, y, z);
	}

In the unity editor, you can set the minAngle and maxAngle each handle can turn as they are public.
Furthermore, if you look at the line under the comment //restrict angle of rotation, you can use Mathf.Clamp(angle to rotate about,min Angle,max Angle) to put constraints on how much a paddle can rotate.

Instead of rotating about the z-axis, you can rotate about the x-axis where your following code may look like this:

x = Mathf.Clamp(x,minAngle,maxAngle);