// Sets the laser objects up so they appear to be bouncing around.
void Update()
{
// The origin and direction of the ray.
Vector2 o = transform.position, d = transform.right;
// Whether or not each ray should be visible.
bool visible = true;
foreach (GameObject laser in lasers)
{
// If the laser object should be visible (the laser is "still going")
if (visible)
{
// Make it visible
laser.SetActive(true);
// Find the intersection between the ray and the world.
RaycastHit2D hit = Physics2D.Raycast(o, d);
// Make the laser object face the direction of the ray.
laser.transform.position = (o + hit.point) * 0.5f;
Vector3 localScale = laser.transform.localScale;
Vector3 scale = new Vector3(
Vector2.Distance(o, hit.point),
localScale.y,
localScale.z);
float angle = Vector2.SignedAngle(laser.transform.right, d);
laser.transform.Rotate(Vector3.forward, angle);
laser.transform.localScale = scale;
// Determine whether a laser redirection is available in the hit object. (Reflection or refraction)
LaserAffector affector = hit.collider.gameObject.GetComponent <LaserAffector>();
// If so, redirect the laser.
if (affector != null)
{
Ray2D newRay = affector.RedirectLaser(new Ray2D(o, d), hit);
o = newRay.origin;
d = newRay.direction;
}
// Otherwise, set the following laser objects to invisible.
else
{
visible = false;
}
}
else
{
laser.SetActive(false);
}
}
}
// Sets the laser objects up so they appear to be bouncing around.
void Update()
{
// The origin and direction of the ray.
Vector2 o = transform.position, d = transform.right;
// Whether or not each ray should be visible.
bool visible = true;
foreach (GameObject laser in lasers)
{
// If the laser object should be visible (the laser is "still going")
if (visible)
{
// Make it visible
laser.SetActive(true);
Util.SetLayerRecursively(laser, gameObject.layer);
// Find the intersection between the ray and the layer that the emitter resides in.
ContactFilter2D cf = new ContactFilter2D();
// Only check on the same layer.
cf.SetLayerMask(1 << gameObject.layer);
// Don't check for triggers.
cf.useTriggers = false;
// Only get the first hit.
RaycastHit2D[] results = new RaycastHit2D[1];
int count = Physics2D.Raycast(o, d, cf, results, maxDistance);
// If the ray hit something.
if (count > 0)
{
RaycastHit2D hit = results[0];
// Make the laser object face the direction of the ray.
laser.transform.position = (o + hit.point) * 0.5f;
Vector3 localScale = laser.transform.localScale;
Vector3 scale = new Vector3(
Vector2.Distance(o, hit.point),
localScale.y,
localScale.z);
float angle = Vector2.SignedAngle(laser.transform.right, d);
laser.transform.Rotate(Vector3.forward, angle);
laser.transform.localScale = scale;
// Determine whether a laser redirection is available in the hit object. (Reflection or refraction)
LaserAffector affector = hit.collider.gameObject.GetComponent <LaserAffector>();
// If so, redirect the laser.
if (affector != null)
{
Ray2D newRay = affector.RedirectLaser(new Ray2D(o, d), hit);
if (newRay.direction.magnitude == 0)
{
visible = false;
continue;
}
o = newRay.origin;
d = newRay.direction;
//}
}
// Otherwise, set the following laser objects to invisible.
else
{
visible = false;
}
}
// If nothing was hit, i.e. the lazer is shot into the empty sky.
else
{
// Draw it with length infiniteRenderSize.
laser.transform.position = (o + d * infiniteRenderSize * 0.5f);
Vector3 localScale = laser.transform.localScale;
Vector3 scale = new Vector3(
infiniteRenderSize,
localScale.y,
localScale.z);
float angle = Vector2.SignedAngle(laser.transform.right, d);
laser.transform.Rotate(Vector3.forward, angle);
laser.transform.localScale = scale;
// Don't draw the following lasers.
visible = false;
}
}
else
{
laser.SetActive(false);
}
}
}