//create rope instantly
public void CreateRope(GameObject objectsHolder, GameObject chainObject, Transform pointA, Transform pointB, bool lockFirstChain, bool lockLastChain, bool connectToA, bool connectToB, bool hideEndObjects, bool useLineRenderer, Material ropeMat, float ropeWidth)
{
objHolder = objectsHolder.transform;
//reset variables
int remainChainCount = 0;
int chainIndex = 0;
Quaternion newRotation;
bool connected = false;
Transform tempChain = null;
//calculate how many chains is needed from pointA to pointB
remainChainCount = (int)(Vector3.Distance(pointA.position, pointB.position) / (chainObject.renderer.bounds.extents.x * 1.9f));
//while rope isn't connected to end point
while (!connected)
{
Transform chain;
if (ropePool != null)
{
chain = ropePool.Create().transform; //use pooling system
}
else
{
chain = ((GameObject)GameObject.Instantiate(chainObject)).transform; //create chain using standard Instantiate function
}
//if useLineRenderer is true, disable chain's renderer
if (useLineRenderer)
{
chain.renderer.enabled = false;
}
else
{
chain.renderer.enabled = true;
}
//positioning and naming chains
if (!tempChain) //if this is first chain
{
chain.position = pointA.position;
chain.name = "chain 1";
chain.collider2D.isTrigger = true;
//if hideEndObjects is true, disable chain's renderer
if (hideEndObjects)
{
chain.renderer.enabled = false;
}
//if connecToA is true, connect pointA to chain
if (connectToA)
{
var joints = pointA.GetComponentsInChildren <DistanceJoint2D>(); //get all DistanceJoint2D component from pointA
DistanceJoint2D distJoint = new DistanceJoint2D();
//iterate through all joints and get free one
foreach (var joint in joints)
{
if (!joint.connectedBody)
{
distJoint = joint;
}
}
distJoint.distance = 0.01f;
distJoint.connectedBody = chain.rigidbody2D;
pointA.rigidbody2D.isKinematic = true;
}
else
{
chain.rigidbody2D.isKinematic = lockFirstChain;
}
}
else //if this isn't first chain
{
//position newly created chain next to last chain
chain.position = tempChain.position + ((pointB.position - tempChain.position) / remainChainCount);
chain.name = "chain " + (1 + chainIndex);
}
//rotate chain object to look at end position
newRotation = Quaternion.LookRotation(pointA.position - pointB.position, Vector3.up);
newRotation.x = 0;
newRotation.y = 0;
chain.rotation = newRotation;
//if at least 1 chain is created
if (tempChain)
{
//get last created chain's HingeJoint2D component and connect it to newly created object
var tempChainHinge = tempChain.GetComponent <HingeJoint2D>();
var midPos = tempChain.position + ((chain.position - tempChain.position).normalized * (chainObject.renderer.bounds.extents.x));
tempChainHinge.anchor = tempChain.transform.InverseTransformPoint(midPos);
tempChainHinge.connectedAnchor = chain.transform.InverseTransformPoint(midPos);
tempChainHinge.connectedBody = chain.rigidbody2D;
tempChainHinge.enabled = true;
//if this is second chain
if (chainIndex == 1)
{
//add second hingejoint component to second chain object and connect to first chain
//it's necessary to swing rope freely around both ends
var chainHinge = chain.gameObject.AddComponent <HingeJoint2D>();
chainHinge.connectedBody = tempChain.rigidbody2D;
//set anchor position
if (!connectToA)
{
chainHinge.anchor = new Vector2(-tempChainHinge.anchor.x, -tempChainHinge.anchor.y);
chainHinge.connectedAnchor = new Vector2(-tempChainHinge.connectedAnchor.x, -tempChainHinge.connectedAnchor.y);
}
else
{
chainHinge.anchor = chainHinge.transform.InverseTransformPoint(tempChain.position);
}
GameObject.DestroyImmediate(tempChainHinge);
}
}
//calculate how many chain is needed from last chain position to end position
remainChainCount = (int)(Vector3.Distance(chain.position, pointB.position) / (chainObject.renderer.bounds.extents.x * 1.9f));
//if it's last chain, make it isKinematic(physics won't affect it)
if (remainChainCount < 1)
{
if (!tempChain.GetComponent <HingeJoint2D>())
{
Debug.LogWarning("Distance from pointA to pointB is very small, increase distance");
chain.parent = objectsHolder.transform;
break;
}
//don't limit angle
var tempChainJoint = tempChain.GetComponent <HingeJoint2D>();
tempChainJoint.useLimits = false;
//set anchor position
if (connectToB)
{
tempChainJoint.connectedAnchor = Vector2.zero;
tempChainJoint.anchor = tempChain.transform.InverseTransformPoint(chain.position);
}
chain.collider2D.isTrigger = true;
//if hideEndObjects is true, disable chain's renderer
if (hideEndObjects)
{
chain.renderer.enabled = false;
}
//if connectToB is true, connect pointB to last chain
if (connectToB)
{
var joints = pointB.GetComponentsInChildren <DistanceJoint2D>(); //get all DistanceJoint2D from pointB
DistanceJoint2D distJoint = new DistanceJoint2D();
//iterate through joints and return free one
foreach (var joint in joints)
{
if (!joint.connectedBody)
{
distJoint = joint;
}
}
distJoint.distance = 0.01f;
distJoint.connectedBody = chain.rigidbody2D;
pointB.rigidbody2D.isKinematic = true;
}
else if (lockLastChain)
{
chain.rigidbody2D.isKinematic = true;
}
GameObject.DestroyImmediate(chain.GetComponent <HingeJoint2D>()); //remove HingeJoint2D component for last chain
//if useLineRenderer is true, add UseLineRenderer.cs to rope parent, set it material and width
if (useLineRenderer)
{
var useLinerend = objectsHolder.AddComponent <UseLineRenderer>();
useLinerend.ropeMaterial = ropeMat;
useLinerend.width = ropeWidth;
}
connected = true;
}
chain.parent = objectsHolder.transform; //child this chain into objectsHolder gameobject in hierarchy window
tempChain = chain; //save just instantiated chain in tempChain variable
chainIndex++;
}
}