/// <summary>
/// Called when this object is fractured or spawned as a result of a fracture
/// </summary>
/// <param name="args"></param>
internal virtual void OnFracture(OnFractureEventArgs args)
{
if (args.OriginalObject == this)
{
_processingFracture = false;
}
}
private void OnFracture(OnFractureEventArgs args)
{
if (args.OriginalObject.gameObject == gameObject)
{
TransferOurJoint(args);
RewriteOtherJoints(args);
}
}
internal override void OnFracture(OnFractureEventArgs args)
{
if (!_ignoreOnFractured)
{
base.OnFracture(args);
GeneratedPieces = args.FracturePiecesRootObject;
GeneratedPieces.SetActive(false);
}
}
private void OnFracture(OnFractureEventArgs e)
{
for (int i = 0; i < ObjectsToDisable.Length; i++)
{
if (ObjectsToDisable[i] != null)
{
ObjectsToDisable[i].SetActive(false);
}
}
}
private void OnFracture(OnFractureEventArgs args)
{
if (args.OriginalObject.gameObject == gameObject)
{
for (int i = 0; i < GameObjects.Length; i++)
{
if (GameObjects[i] != null)
{
GameObjects[i].SendMessage("OnFracture", args, SendMessageOptions.DontRequireReceiver);
}
}
}
}
protected override AsyncFractureResult FractureInternal(Vector3 localPos)
{
if (gameObject.activeSelf)
{
if (GeneratedPieces == null)
{
GenerateFractureMeshes(localPos, null);
EnableFracturePieces();
}
else
{
EnableFracturePieces();
OnFractureEventArgs args = new OnFractureEventArgs(this, GeneratedPieces);
// Notify scripts on this object
_ignoreOnFractured = true;
gameObject.SendMessage("OnFracture", args,
SendMessageOptions.DontRequireReceiver);
_ignoreOnFractured = false;
// Notify each fracture piece
Transform trans = GeneratedPieces.transform;
for (int i = 0; i < trans.childCount; i++)
{
trans.GetChild(i).gameObject.SendMessage("OnFracture", args, SendMessageOptions.DontRequireReceiver);
}
}
gameObject.SetActive(false);
AsyncFractureResult result = new AsyncFractureResult();
result.SetResult(GeneratedPieces, EntireMeshBounds);
return(result);
}
else
{
AsyncFractureResult result = new AsyncFractureResult();
result.SetResult(null, new Bounds());
return(result);
}
}
private void OnFracture(OnFractureEventArgs args)
{
if (args.OriginalObject.gameObject == gameObject)
{
// We most likely will be disabled next frame. When that
// happens, the audio source on this object will not play.
// To work around this, we create a temporary object and
// copy all the sound properties to it.
GameObject go = new GameObject("FractureTempAudioSource");
AudioSource ourSrc = GetComponent <AudioSource>();
AudioSource newSrc = go.AddComponent <AudioSource>();
newSrc.bypassEffects = ourSrc.bypassEffects;
newSrc.bypassListenerEffects = ourSrc.bypassListenerEffects;
newSrc.bypassReverbZones = ourSrc.bypassReverbZones;
newSrc.clip = ourSrc.clip;
newSrc.dopplerLevel = ourSrc.dopplerLevel;
newSrc.ignoreListenerPause = ourSrc.ignoreListenerPause;
newSrc.ignoreListenerVolume = ourSrc.ignoreListenerVolume;
newSrc.loop = ourSrc.loop;
newSrc.maxDistance = ourSrc.maxDistance;
newSrc.mute = ourSrc.mute;
newSrc.mute = ourSrc.mute;
newSrc.minDistance = ourSrc.minDistance;
newSrc.mute = ourSrc.mute;
newSrc.panStereo = ourSrc.panStereo;
newSrc.spatialBlend = ourSrc.spatialBlend;
newSrc.pitch = ourSrc.pitch;
newSrc.playOnAwake = ourSrc.playOnAwake;
newSrc.priority = ourSrc.priority;
newSrc.rolloffMode = ourSrc.rolloffMode;
newSrc.spread = ourSrc.spread;
newSrc.time = ourSrc.time;
newSrc.timeSamples = ourSrc.timeSamples;
newSrc.velocityUpdateMode = ourSrc.velocityUpdateMode;
newSrc.volume = ourSrc.volume;
go.AddComponent <Internal.DestroyOnAudioFinish>();
}
}
private void RewriteOtherJoints(OnFractureEventArgs args)
{
Joint[] joints;
if (IncomingJointsSearchRoot != null)
{
joints = IncomingJointsSearchRoot.GetComponentsInChildren <Joint>();
}
else
{
joints = FindObjectsOfType <Joint>();
}
if (joints != null)
{
for (int i = 0; i < joints.Length; i++)
{
if (joints[i] != null && joints[i].connectedBody == args.OriginalObject.GetComponent <Rigidbody>())
{
Transform rootTrans = args.FracturePiecesRootObject.transform;
for (int j = 0; j < rootTrans.childCount; j++)
{
Transform pieceTrans = rootTrans.GetChild(j);
Vector3 worldPoint =
joints[i].transform.localToWorldMatrix.MultiplyPoint(joints[i].anchor);
Collider ourCollider = pieceTrans.GetComponent <Collider>();
Vector3 closestOnUs = (ourCollider != null)
? ourCollider.ClosestPointOnBounds(worldPoint)
: transform.position;
if ((worldPoint - pieceTrans.position).sqrMagnitude <
(closestOnUs - pieceTrans.position).sqrMagnitude + DistanceTolerance * DistanceTolerance)
{
joints[i].connectedBody = pieceTrans.GetComponent <Rigidbody>();
}
}
}
}
}
}
private void OnFracture(OnFractureEventArgs fractureRoot)
{
Rigidbody body = GetComponent <Rigidbody>();
if (body != null)
{
body.isKinematic = false; // Need to turn off kinematic to get collision events
_rigidBodyVelocity = body.velocity;
_rigidBodyAngularVelocity = body.angularVelocity;
_rigidBodyConstraints = body.constraints;
body.constraints = RigidbodyConstraints.FreezeAll;
_impactPoint = Vector3.zero;
_impactVelocity = Vector3.zero;
_impactMass = 0.0f;
_fractureFrame = Time.frameCount;
this.enabled = true;
}
}
private void OnFracture(OnFractureEventArgs args)
{
if (args.OriginalObject.gameObject == gameObject)
{
float radiusSq = ForceFalloffRadius * ForceFalloffRadius;
for (int i = 0; i < args.FracturePiecesRootObject.transform.childCount; i++)
{
Transform piece = args.FracturePiecesRootObject.transform.GetChild(i);
Rigidbody rb = piece.GetComponent <Rigidbody>();
if (rb != null)
{
Vector3 force = _impactMass * _impactVelocity / (rb.mass + _impactMass);
if (ForceFalloffRadius > 0.0f)
{
float distSq = (piece.position - _impactPoint).sqrMagnitude;
force *= Mathf.Clamp01(1.0f - distSq / (radiusSq));
}
rb.AddForceAtPosition(force * rb.mass, _impactPoint, ForceMode.Impulse);
}
}
if (AdjustForKinematic)
{
// If the fractured body is kinematic, the collision for the colliding body will
// be as if it hit an unmovable wall. Try to correct for that by adding the same
// force to colliding body.
Rigidbody thisBody = GetComponent <Rigidbody>();
if (thisBody != null && thisBody.isKinematic && _impactBody != null)
{
Vector3 force = thisBody.mass * _impactVelocity / (thisBody.mass + _impactMass);
_impactBody.AddForceAtPosition(force * _impactMass, _impactPoint, ForceMode.Impulse);
}
}
}
}
private void TransferOurJoint(OnFractureEventArgs args)
{
Joint origJoint = args.OriginalObject.GetComponent <Joint>();
if (origJoint != null)
{
Vector3 worldPoint =
args.OriginalObject.transform.localToWorldMatrix.MultiplyPoint(origJoint.anchor);
Transform rootTrans = args.FracturePiecesRootObject.transform;
for (int i = 0; i < rootTrans.childCount; i++)
{
Transform pieceTrans = rootTrans.GetChild(i);
Collider ourCollider = pieceTrans.GetComponent <Collider>();
Vector3 closestOnUs = (ourCollider != null)
? ourCollider.ClosestPointOnBounds(worldPoint)
: transform.position;
if ((worldPoint - pieceTrans.position).sqrMagnitude <
(closestOnUs - pieceTrans.position).sqrMagnitude + DistanceTolerance * DistanceTolerance)
{
Joint ourJoint = (Joint)pieceTrans.gameObject.AddComponent(origJoint.GetType());
string ourName = ourJoint.name;
// Copy the properties
#if UNITY_METRO && !UNITY_EDITOR
foreach (
PropertyInfo info in
origJoint.GetType().GetRuntimeProperties())
{
if (info.CanWrite && info.CanRead)
{
info.SetValue(ourJoint, info.GetValue(origJoint, null), null);
}
}
#else
foreach (
PropertyInfo info in
origJoint.GetType().GetProperties(BindingFlags.Public | BindingFlags.Instance))
{
if (info.CanWrite && info.CanRead)
{
info.SetValue(ourJoint, info.GetValue(origJoint, null), null);
}
}
foreach (
PropertyInfo info in
origJoint.GetType().GetProperties(BindingFlags.Instance | BindingFlags.NonPublic))
{
if (info.CanWrite && info.CanRead &&
info.GetCustomAttributes(typeof(SerializeField), true).Length != 0)
{
info.SetValue(ourJoint, info.GetValue(origJoint, null), null);
}
}
#endif
ourJoint.name = ourName;
// Reanchor
ourJoint.anchor = pieceTrans.worldToLocalMatrix.MultiplyPoint(worldPoint);
Vector3 connectedAnchorWorldPoint =
args.OriginalObject.transform.localToWorldMatrix.MultiplyPoint(origJoint.connectedAnchor);
ourJoint.connectedAnchor = pieceTrans.worldToLocalMatrix.MultiplyPoint(connectedAnchorWorldPoint);
Vector3 worldAxis =
args.OriginalObject.transform.localToWorldMatrix.MultiplyVector(origJoint.axis);
ourJoint.axis = pieceTrans.worldToLocalMatrix.MultiplyVector(worldAxis).normalized;
}
// Make sure each piece has one of these scripts attached
if (pieceTrans.GetComponent <TransferJointsOnFracture>() == null)
{
TransferJointsOnFracture tjof = pieceTrans.gameObject.AddComponent <TransferJointsOnFracture>();
tjof.IncomingJointsSearchRoot = IncomingJointsSearchRoot;
tjof.DistanceTolerance = DistanceTolerance;
}
}
}
}
private IEnumerator WaitForResults(AsyncFractureOperation operation, FractureGeometry callback, Transform piecesParent, bool transferMass, bool hideAfterFracture, AsyncFractureResult result)
{
while (!operation.IsComplete)
{
// Async fractures should not happen while in edit mode because game objects don't update too often
// and the coroutine is not pumped. Sync fractures should not reach this point.
System.Diagnostics.Debug.Assert(Application.isPlaying && operation.Details.Asynchronous);
yield return(null);
}
Rigidbody origBody = null;
if (transferMass)
{
origBody = callback.GetComponent <Rigidbody>();
}
float density = 0.0f;
if (origBody != null)
{
// Calculate the density by setting the density to
// a known value and see what the mass comes out to.
float mass = origBody.mass;
origBody.SetDensity(1.0f);
float volume = origBody.mass;
density = mass / volume;
// Reset the mass
origBody.mass = mass;
}
List <FracturedMesh> meshes = operation.Result.GetMeshes();
GameObject rootGO = new GameObject(callback.gameObject.name + " - Fracture Root");
rootGO.transform.parent = (piecesParent ?? callback.transform.parent);
rootGO.transform.position = callback.transform.position;
rootGO.transform.rotation = callback.transform.rotation;
rootGO.transform.localScale = Vector3.one; // Scale is controlled by the value in operation.Details
Material[] sharedMaterials = callback.GetComponent <Renderer>().sharedMaterials;
for (int i = 0; i < meshes.Count; i++)
{
GameObject go = (GameObject)Instantiate(callback.FractureTemplate);
go.name = "Fracture Object " + i;
go.transform.parent = rootGO.transform;
go.transform.localPosition = meshes[i].Offset;
go.transform.localRotation = Quaternion.identity;
go.transform.localScale = Vector3.one;
go.SetActive(true);
MeshFilter mf = go.GetComponent <MeshFilter>();
mf.mesh = meshes[i].Mesh;
MeshRenderer meshRenderer = go.GetComponent <MeshRenderer>();
if (meshRenderer != null)
{
Material[] materials = new Material[sharedMaterials.Length - meshes[i].EmptyTriangleCount + 1];
int matIdx = 0;
for (int m = 0; m < sharedMaterials.Length; m++)
{
if (!meshes[i].EmptyTriangles[m])
{
materials[matIdx++] = sharedMaterials[m];
}
}
if (!meshes[i].EmptyTriangles[sharedMaterials.Length])
{
materials[matIdx] = callback.InsideMaterial;
}
meshRenderer.sharedMaterials = materials;
}
MeshCollider meshCol = go.GetComponent <MeshCollider>();
if (meshCol != null)
{
meshCol.sharedMesh = mf.sharedMesh;
}
if (transferMass && origBody != null)
{
Rigidbody rb = go.GetComponent <Rigidbody>();
if (rb != null)
{
rb.SetDensity(density);
rb.mass = rb.mass; // Need to explicity set it for the editor to reflect the changes
}
}
FractureGeometry fg = go.GetComponent <FractureGeometry>();
if (fg != null)
{
fg.InsideMaterial = callback.InsideMaterial;
fg.FractureTemplate = callback.FractureTemplate;
fg.PiecesParent = callback.PiecesParent;
fg.NumGenerations = callback.NumGenerations - 1;
fg.DistributeMass = callback.DistributeMass;
}
}
OnFractureEventArgs args = new OnFractureEventArgs(callback, rootGO);
if (Application.isPlaying)
{
callback.gameObject.SendMessage("OnFracture", args, SendMessageOptions.DontRequireReceiver);
}
else
{
callback.OnFracture(args);
}
if (hideAfterFracture)
{
callback.gameObject.SetActive(false);
}
if (Application.isPlaying)
{
Transform trans = rootGO.transform;
for (int i = 0; i < trans.childCount; i++)
{
trans.GetChild(i).gameObject.SendMessage("OnFracture", args, SendMessageOptions.DontRequireReceiver);
}
}
result.SetResult(rootGO, operation.Result.EntireMeshBounds);
}
