/// <summary>
/// Process a collision contact to get all material and velocity data.
/// The material and velocity data will be sent to buildInteractionData, which you can override.
/// </summary>
/// <param name="collision">The original collision data.</param>
/// <param name="contactPoint">The contact point of the collision to use in calculations.</param>
protected void processCollisionContact(TCollision collision, TContact contactPoint)
{
IImpactObject myObject = getImpactObject(contactPoint.ThisObject);
if (myObject != null)
{
IImpactObject otherObject = contactPoint.OtherObject.GetComponentInParent <IImpactObject>();
bool hasOtherObject = otherObject != null;
//Material composition is enabled
if (UseMaterialComposition && hasOtherObject)
{
//Get material composition
int count = otherObject.GetMaterialCompositionNonAlloc(contactPoint.Point, ImpactManagerInstance.MaterialCompositionBuffer);
//Get velocity data
VelocityData myVelocityData = myObject.GetVelocityDataAtPoint(contactPoint.Point);
VelocityData otherVelocityData = otherObject.GetVelocityDataAtPoint(contactPoint.Point);
//Create interaction for each material
for (int i = 0; i < count; i++)
{
ImpactMaterialComposition comp = ImpactManagerInstance.MaterialCompositionBuffer[i];
if (comp.CompositionValue > 0)
{
buildInteractionData(myObject, collision, contactPoint, myVelocityData, otherVelocityData, comp.Material.MaterialTagsMask, comp.CompositionValue);
}
}
}
//Material composition is not enabled
else
{
//Get velocity data
VelocityData otherVelocityData = hasOtherObject ? otherObject.GetVelocityDataAtPoint(contactPoint.Point) : new VelocityData();
VelocityData myVelocityData = myObject.GetVelocityDataAtPoint(contactPoint.Point);
//Get tag mask
ImpactTagMask?tagMask = getOtherObjectTagMask(otherObject, contactPoint.Point, contactPoint.OtherPhysicsMaterialID, hasOtherObject);
//Create interaction
buildInteractionData(myObject, collision, contactPoint, myVelocityData, otherVelocityData, tagMask, 1);
}
}
else
{
//Impact object could not be found. MainTarget is not assigned and no Impact Object could be determined from the contact point.
Debug.LogError("Unable to find Impact Object on GameObject " + gameObject.name);
}
}
private void processParticleCollision(ParticleCollisionEvent particleCollisionEvent, GameObject onParticleCollisionObject, bool isParticleSystem)
{
IImpactObject myObject;
//Particle system always uses the main target
if (isParticleSystem)
{
myObject = MainTarget;
}
//Non-particle system gets the object from the particle collision event's collider
else
{
myObject = getImpactObject(particleCollisionEvent.colliderComponent.gameObject);
}
if (myObject != null)
{
IImpactObject otherObject = null;
//Get other object based on whether or not this object is a particle system
if (isParticleSystem)
{
otherObject = particleCollisionEvent.colliderComponent.GetComponentInParent <IImpactObject>();
}
else
{
otherObject = onParticleCollisionObject.GetComponentInParent <IImpactObject>();
}
bool hasOtherObject = otherObject != null;
if (UseMaterialComposition && hasOtherObject)
{
int count = otherObject.GetMaterialCompositionNonAlloc(particleCollisionEvent.intersection, ImpactManagerInstance.MaterialCompositionBuffer);
//Velocity data is dependent on if this is a particle system or a not
VelocityData myVelocityData;
VelocityData otherVelocityData;
if (isParticleSystem)
{
myVelocityData = new VelocityData(particleCollisionEvent.velocity, Vector3.zero);
otherVelocityData = otherObject.GetVelocityDataAtPoint(particleCollisionEvent.intersection);
}
else
{
myVelocityData = myObject.GetVelocityDataAtPoint(particleCollisionEvent.intersection);
otherVelocityData = new VelocityData(particleCollisionEvent.velocity, Vector3.zero);
}
Vector3 relativeContactPointVelocity = myVelocityData.TotalPointVelocity - otherVelocityData.TotalPointVelocity;
for (int i = 0; i < count; i++)
{
ImpactMaterialComposition comp = ImpactManagerInstance.MaterialCompositionBuffer[i];
if (comp.CompositionValue > 0)
{
InteractionData interactionData = new InteractionData()
{
TagMask = comp.Material.MaterialTagsMask,
Point = particleCollisionEvent.intersection,
Normal = particleCollisionEvent.normal,
Velocity = relativeContactPointVelocity,
InteractionType = InteractionData.InteractionTypeCollision,
ThisObject = this.gameObject,
OtherObject = otherObject.GameObject,
CompositionValue = 1f
};
invokeTriggeredEvent(interactionData, myObject);
ImpactManagerInstance.ProcessInteraction(interactionData, myObject);
}
}
}
else
{
//Velocity data is dependent on if this is a particle system or a not
VelocityData myVelocityData;
VelocityData otherVelocityData;
if (isParticleSystem)
{
myVelocityData = new VelocityData(particleCollisionEvent.velocity, Vector3.zero);
otherVelocityData = hasOtherObject ? otherObject.GetVelocityDataAtPoint(particleCollisionEvent.intersection) : new VelocityData();
}
else
{
myVelocityData = myObject.GetVelocityDataAtPoint(particleCollisionEvent.intersection);
otherVelocityData = new VelocityData(particleCollisionEvent.velocity, Vector3.zero);
}
Vector3 relativeContactPointVelocity = myVelocityData.TotalPointVelocity - otherVelocityData.TotalPointVelocity;
//Get physics material ID for material mapping, but only if this object is a particle system.
//Particles don't have a collider so no need to try and get the physics material if this is not a particle system
int otherPhysicsMaterialID = isParticleSystem ? getPhysicsMaterialID(particleCollisionEvent.colliderComponent) : 0;
ImpactTagMask?tagMask = getOtherObjectTagMask(otherObject, particleCollisionEvent.intersection, otherPhysicsMaterialID, hasOtherObject);
InteractionData interactionData = new InteractionData()
{
TagMask = tagMask,
Point = particleCollisionEvent.intersection,
Normal = particleCollisionEvent.normal,
Velocity = relativeContactPointVelocity,
InteractionType = InteractionData.InteractionTypeCollision,
ThisObject = this.gameObject,
OtherObject = particleCollisionEvent.colliderComponent.gameObject,
CompositionValue = 1f
};
invokeTriggeredEvent(interactionData, myObject);
ImpactManagerInstance.ProcessInteraction(interactionData, myObject);
}
}
else
{
Debug.LogError("Unable to find Impact Object on GameObject " + gameObject.name);
}
}