protected void FireAtPlayer()
{
if (InvaderManager.I.PlayerObject.GetCurrentHealth > 0 && lastFire < Time.time)
{
ParticleSystem.EmitParams eparam = new ParticleSystem.EmitParams();
float accuracy = AccuracyBasedOnDifficulty.Evaluate(InvaderManager.GetDifficulty());
Vector2 tVel = InvaderManager.I.PlayerObject.GetVelocity / Time.deltaTime;
float tMagn = tVel.magnitude;
float delta = tMagn / ProjectileSpeed;
Vector2 desPoint = InvaderManager.I.PlayerObject.transform.position;
desPoint += (tVel * delta);
desPoint += Random.insideUnitCircle * (1f - accuracy) * AccuracyDistance;
Vector2 dir = desPoint - new Vector2(transform.position.x, transform.position.y);
Debug.DrawRay(desPoint, dir, Color.green, 1f);
eparam.velocity = dir.normalized * ProjectileSpeed;
eparam.position = transform.position;
ParticleSystem.Emit(eparam, 1);
lastFire = Time.time + MinFireInterval + Random.Range(0f, 2f);
}
}
protected bool Aggro()
{
float dist = 0f;
if (!GoHostile(out dist))
{
return(false);
}
else
{
Vector2 tVel = InvaderManager.I.PlayerObject.GetVelocity / Time.deltaTime;
float mySpeed = SpeedBasedOnDifficulty.Evaluate(InvaderManager.GetDifficulty());
float tMagn = tVel.magnitude;
float delta = tMagn / mySpeed;
Vector2 desPoint = InvaderManager.I.PlayerObject.transform.position;
desPoint += (tVel * delta);
transform.position = Vector2.MoveTowards(transform.position, desPoint, mySpeed * Time.deltaTime);
FireAtPlayer();
return(true);
}
}
protected bool GoHostile(out float dist)
{
float difficulty = InvaderManager.GetDifficulty();
dist = Vector2.Distance(InvaderManager.I.PlayerObject.transform.position, transform.position);
float aggroDist = AggroBasedOnDifficulty.Evaluate(difficulty);
if (InvaderManager.I.PlayerObject.GetCurrentHealth <= 0)
{
return(false);
}
return(dist < aggroDist);
}
protected void Roam()
{
if (Time.time > nextRoamUpdate)
{
float xBias = InvaderManager.I.PlayerObject.transform.position.x - transform.position.x;
xBias = Mathf.Clamp(xBias, -1f, 1f) * 0.4f;
Vector2 dir = (Vector2.right * xBias) + Random.insideUnitCircle;
dir.y *= 0.3f; // More horizontal movement
roamDir = dir.normalized;
roamSpeed = SpeedBasedOnDifficulty.Evaluate(InvaderManager.GetDifficulty()) * Random.Range(0.5f, 1f);
nextRoamUpdate = Time.time + Random.Range(0.5f, 4f);
}
if (FireDistance > Vector3.Distance(InvaderManager.I.PlayerObject.transform.position, transform.position))
{
FireAtPlayer();
}
curRoamDir = Vector3.RotateTowards(curRoamDir, roamDir, 2f * Time.deltaTime, 4f * Time.deltaTime);
transform.position = Vector2.MoveTowards(transform.position, new Vector2(transform.position.x, transform.position.y) + curRoamDir, roamSpeed * Time.deltaTime);
}