connecting objects

Unity Engine
1

Hi again,

another question i have:

i try to connect a object to my car.

i modified the sticky grenade object so i could give my car a car attached. but it doesn´t work :frowning:

the other car always connects to the ground, but it should not do this.

so how can i solve this?
the sticky grenade script should only work with a key hitted and only with my car.

i do not now where i can put the two ifs in

first : only when key “x” is pressed
and second:

only if the player car comes around…

thanks

/// This script requires that a rigdibody is attached to the same game object

private var localAttachmentPoint = Vector3.zero;
private var attachedTransform : Transform;
private var isAttached = false;

//Enable only when we have a collision
function Awake ()
{
enabled = false;
}

function OnCollisionEnter ( col : Collision )
{
if (isAttached)
return;
isAttached = true;

// When we hit a rigidbody we attach to it with a fixed joint
// this gives extra realism eg. the grenade’s mass will now pull down the attached to rigidbody
if (col.rigidbody.CompareTag (“Player”))

{
var joint = gameObject.AddComponent(“HingeJoint”);
joint.connectedBody = col.rigidbody;
hingeJoint.limits.min = 0;
hingeJoint.limits.minBounce = 0;
hingeJoint.limits.max = 90;
hingeJoint.limits.maxBounce = 0;

}
// When we hit a normal collider we just follow the transform around!

else
{
// Store local attachment point and transform we stick to
attachedTransform = col.transform;
localAttachmentPoint = attachedTransform.InverseTransformPoint(transform.position);

// The grenade’s position is now driven by the script instead of physics
rigidbody.isKinematic = true;
enabled = true;
}
}

//function Update1 () {
// if (Input.GetKey (“space”)) {
// isAttached = false;
// }
//}
function Update ()
{
// Update position to follow the object we stick to
if (attachedTransform)
{
transform.position = attachedTransform.TransformPoint(localAttachmentPoint);
}
else
{
// The attached transform was destroyed. Let go and enable physics control
rigidbody.isKinematic = false;
enabled = false;
}
}

2

Could you just make your grenade’s transform a child of the car transform when you want it to stick?

3

in some cases i need a joint hinge on the car.
so for first steps i could do this, can you tell me how ? :wink: