float CalculateFrictionCoefficient(EFrictionType frictionType)
{
float frictionCoefficient = 0.0f;
//determine our friction values
Collider coll = GetComponent <Collider>();
float ourFriction = (frictionType == EFrictionType.EFT_Static) ? coll.material.staticFriction : coll.material.dynamicFriction;
PhysicMaterialCombine ourCombine = coll.material.frictionCombine;
//check if we are colliding against an object
Vector3 ourPosition = transform.position;
float ourHeight = transform.localScale.y;
float ourGroundBuffer = 0.25f;
int layer = LayerMask.NameToLayer("Ball");
int layerMask = 1 << layer;
layerMask = ~layerMask;
RaycastHit hit;
if (Physics.Raycast(ourPosition, -Vector3.up, out hit, (ourHeight * 0.5f) + ourGroundBuffer, layerMask))
{
float hitFriction = (frictionType == EFrictionType.EFT_Static) ? hit.collider.material.staticFriction : hit.collider.material.dynamicFriction;
PhysicMaterialCombine hitCombine = hit.collider.material.frictionCombine;
//Average < Minimum < Multiply < Maximum
bool isMax = hitCombine == PhysicMaterialCombine.Maximum || ourCombine == PhysicMaterialCombine.Maximum;
bool isMultiply = hitCombine == PhysicMaterialCombine.Multiply || ourCombine == PhysicMaterialCombine.Multiply;
bool isMin = hitCombine == PhysicMaterialCombine.Minimum || ourCombine == PhysicMaterialCombine.Minimum;
bool isAverage = hitCombine == PhysicMaterialCombine.Average || ourCombine == PhysicMaterialCombine.Average;
if (isMax)
{
frictionCoefficient = hitFriction > ourFriction ? hitFriction : ourFriction;
}
else if (isMultiply)
{
frictionCoefficient = hitFriction * ourFriction;
}
else if (isMin)
{
frictionCoefficient = hitFriction < ourFriction ? hitFriction : ourFriction;
}
else if (isAverage)
{
frictionCoefficient = (hitFriction + ourFriction) * 0.5f;
}
}
return(frictionCoefficient);
}
float CalculateFrictionalForce(EFrictionType frictionType)
{
return(CalculateNormalForce() * CalculateFrictionCoefficient(frictionType));
}
