private void OnTriggerEnter2D(Collider2D coll)
{
if (coll.tag != photonTag)
{
return;
}
Photon photon = coll.transform.GetComponent <Photon>();
Rigidbody2D photonRb = coll.transform.GetComponent <Rigidbody2D>();
Transform photonTransform = coll.transform;
GameObject photonGO = coll.gameObject;
if (!photon.canScatter || photon.curEnergy < minScatterEnergy || photon.lastScatterColl)
{
return;
}
Vector3 veloDir = photonRb.velocity.normalized;
float veloIncomingAngle = Vector3.Angle(veloDir, transform.right);
if (veloIncomingAngle > 90f)
{
veloIncomingAngle = 180f - veloIncomingAngle;
}
//Debug.Log(veloIncomingAngle);
if (veloIncomingAngle < minScatterAngle)
{
return;
}
Vector3 normal;
if (Vector3.Dot(veloDir, transform.up) > 0)
{
normal = transform.up;
}
else
{
normal = -transform.up;
}
if (!doubleSided && Vector3.Dot(veloDir, transform.up) < 0f)
{
return;
}
// this photon could be scattered
//Debug.Log(transform.rotation.eulerAngles);
if (ps)
{
ParticleSystem newPs = Instantiate(ps, coll.transform.position,
Quaternion.Euler(
transform.rotation.eulerAngles.x,
transform.rotation.eulerAngles.y,
transform.rotation.eulerAngles.z + 90));
// newPs.transform.parent = transform;
}
float deltaAngle = scatterAngle / (scatterCount - 1);
float startAngle = -scatterAngle / 2f;
float scatteredEnergy = photon.curEnergy / scatterCount;
for (int i = 0; i < scatterCount; ++i)
{
float currentAngle = startAngle + i * deltaAngle;
Quaternion scatterRot = Quaternion.Euler(0f, 0f, currentAngle);
Vector3 scatteredDir = scatterRot * normal;
Quaternion newRot = Quaternion.FromToRotation(Vector3.up, scatteredDir);
GameObject newPhotonGO = Instantiate(photonGO, photonTransform.position, newRot);
Photon newPhoton = newPhotonGO.GetComponent <Photon>();
newPhoton.StartScatterImmune(scatterImmuneTime);
newPhoton.lastScatterColl = scatterColl;
newPhoton.curEnergy = scatteredEnergy;
}
photon.lastScatterColl = scatterColl;
photon.InstantDead();
}
