Hinge joint spring variable (c#)

Question

Hi, for my game I need to change the spring of some hinge joints and also the motors.

But I get this errors: Cannot modify a value type return value of UnityEngine.HingeJoint.motor'. Consider storing the value in a temporary variable. Cannot modify a value type return value ofUnityEngine.HingeJoint.spring'. Consider storing the value in a temporary variable

What's even worse is that unity documentation doesn't help at all, since it has the same mistake in there: http://docs.unity3d.com/Documentation/ScriptReference/HingeJoint-spring.html

So, how can I save the spring of an hinge joint inside a variable? Thanks in advance

Answer 1

Best Answer

Answer by perchik · Mar 03, 2014 at 05:56 PM

First, let me say that I don't know anything about JointSprings and/or how to use them.

However, I am familiar with making things work in Unity.... so perhaps:

 using UnityEngine;
 using System.Collections;
 
 public class Example : MonoBehaviour {
 
 JointSpring mySpring;
 
     void Start() {
         mySpring = hingeJoint.spring;
            
         mySpring.spring = 10;
         mySpring.damper = 3;
         mySpring.targetPosition = 70;
 
         hingeJoint.spring = mySpring;
     }
 }

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MadJohny · Mar 03, 2014 at 06:11 PM 0

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yeah, by the time I already made it :) I'm having some other issues now so I don't know if it's working correctly though, also, I don't know if I'll really have to do that line: hingeJoint.spring = mySpring since the spring will be assigned from the inspector it'll probably change it directly, I don't know tho.

MadJohny · Mar 03, 2014 at 06:36 PM 0

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Yeah, it will work, anyway I'll use javascript for this project, or atleast this script, it's so much more complicated to make this script in c#.

Hinge joint spring variable (c#)

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