koobas.hobune.stream
HingeJoint2D.GetReactionForce not working
Since the 2D joints in unity do not seem to have a break force/torque built in, I wanted to write it in a script myself by reading the joints reaction force in the following code:
var breakForce : float = 100;
private var jointForce : float;
function Start() {
var joint = gameObject.AddComponent(HingeJoint2D);
}
function FixedUpdate() {
jointForce=joint.GetReactionForce;
if (jointForce>breakForce) {
Destroy(joint);
}
}
The documentation says that HingeJoint2D.GetReactionForce should be possible: http://docs.unity3d.com/ScriptReference/HingeJoint2D.GetReactionForce.html
However unity tells me: 'GetReactionForce' is not a member of 'UnityEngine.HingeJoint2D'. This made me very confused. I hope someone can help me!
Your code should be something like this:
var breakForce : float = 100;
private var jointForce : Vector2;
var joint : HingeJoint2D;
function Start() {
joint = gameObject.AddComponent(HingeJoint2D);
}
function FixedUpdate() {
jointForce = joint.GetReactionForce ( Time.deltaTime );
if (jointForce.magnitude > breakForce) {
Destroy(joint);
}
}
GetReactionForce returns Vector2 type. You can't convert to float directly. And declare 'joint' as a HingeJoint2D' type. You might compare jointforce's magnitude with the variable 'breakForce'.
Hey thanks a lot for the reply! Unity now gives me the following error, again I am clueless...
$$anonymous$$issing$$anonymous$$ethodException: UnityEngine.HingeJoint2D.GetReactionForce
Boo.Lang.Runtime.DynamicDispatching.$$anonymous$$ethodDispatcherFactory.ProduceExtensionDispatcher ()
Boo.Lang.Runtime.DynamicDispatching.$$anonymous$$ethodDispatcherFactory.Create ()
Boo.Lang.Runtime.RuntimeServices.DoCreate$$anonymous$$ethodDispatcher (System.Object target, System.Type targetType, System.String name, System.Object[] args)
Boo.Lang.Runtime.RuntimeServices.Create$$anonymous$$ethodDispatcher (System.Object target, System.String name, System.Object[] args)
What version of Unity are you using? GetReactionForce is available only from v.4.5. Please check it out and upgrade Unity if necessary. Thanks~.
Ah that must be it. I am still using 4.3 at the moment. Thanks!
