void Create(PhysicsBody bodyA, PhysicsBody bodyB, float restLength, float springPower)
{
PhysicsSpringJoint joint = new PhysicsSpringJoint();
// set the joint bodies, the rest length and k
joint.BodyA = bodyA;
joint.BodyB = bodyB;
joint.RestLength = restLength;
joint.SpringPower = springPower;
// add the joint to the physics world joints
m_physicsWorld.joints.Add(joint);
}
private void Update()
{
m_lineRenderer.enabled = (BodySelect != null);
if (m_lineRenderer.enabled)
{
Vector2 position = Camera.main.ScreenToWorldPoint(Input.mousePosition);
m_lineRenderer.SetPosition(0, BodySelect.Position);
m_lineRenderer.SetPosition(1, position);
if (BodySelect.Type == BodyTypeEnumRef.eType.Dynamic)
{
Vector2 force = PhysicsSpringJoint.SpringForce(position, BodySelect.Position, 0.01f, 30.0f);
BodySelect.ApplyForce(force, PhysicsBody.eForceMode.IMPULSE);
}
else
{
BodySelect.Position = position;
}
}
}
