// Update is called once per frame
void Update()
{
// check required events
if (((CreateProjectile == null || OnHit == null) && DoShot == null) || CanShoot == null)
{
return;
}
// if the enemy is gone or its tag changed to something no longer targetable
if (currentTarget == null || !ValidTags.Contains(currentTarget.tag))
{
SetNextTargetIfPossible();
}
if (currentTarget != null)
{
if (CanShoot(Time.time - timeLastShot, projectilesActive))
{
timeLastShot = Time.time;
if (CreateProjectile != null)
{
GameObject projectile = CreateProjectile();
ProjectileHookBehavior projectileHook = projectile.AddComponent <ProjectileHookBehavior>();
projectileHook.enabled = true;
projectileHook.OnHit += (hitObject, hitCollider) =>
{
if (IsValidTarget(hitObject, hitCollider))
{
return(OnHit(projectile, hitObject));
}
return(false);
};
projectileHook.OnDestroy += (reason) => projectilesActive--;
}
else
{
DoShot();
}
}
}
}
private bool IsValidTarget(GameObject hit, Collider2D collision)
{
// filter self hits
if (hit == this)
{
return(false);
}
// filter ignored colliders
if (IgnoredColliders.Contains(collision))
{
return(false);
}
// filter null hits and invalid tags
if (hit == null || !ValidTags.Contains(hit.tag))
{
return(false);
}
return(true);
}