//[MethodImpl(MethodImplOptions.AggressiveInlining)]
private Vector3 ParticleCollision(Vector3d pPos, Vector3d pVel, int mask)
{
RaycastHit hit;
if (Physics.Raycast(
pPos,
pVel,
out hit,
(float)pVel.magnitude * Time.deltaTime * physicsPass * TimeWarp.CurrentRate,
mask))
{
//// collidersName[hit.collider.name] = true;
if (hit.collider.name != SmokeScreenUtil.LaunchPadGrateColliderName)
{
Vector3 unitTangent = (hit.normal.x == 0 && hit.normal.y == 0)
? new Vector3(1, 0, 0)
: Vector3.ProjectOnPlane(new Vector3(0, 0, 1), hit.normal).normalized;
Vector3 hVel = Vector3.ProjectOnPlane(pVel, hit.normal);
Vector3 reflectedNormalVelocity = hVel - pVel;
float residualFlow = reflectedNormalVelocity.magnitude * (1 - collideRatio);
// An attempt at a better velocity change; the blob collides with some
// restitution coefficient collideRatio << 1 and we add a random tangential term
// for outflowing particles---randomness handwaved in through fluid dynamics:
float randomAngle = Random.value * 360.0f;
Vector3d outflow = Quaternion.AngleAxis(randomAngle, hit.normal) * unitTangent * residualFlow;
pVel = hVel + collideRatio * reflectedNormalVelocity + outflow * (1 - stickiness);
}
else
{
// Don't collide with the launch pad grid and add colliders under it
if (!addedLaunchPadCollider)
{
addedLaunchPadCollider = SmokeScreenUtil.AddLaunchPadColliders(hit);
}
}
}
return(pVel);
}
