void Update()
{
RadialPosition radialPosition = RotationUtils.XYToRadialPos(this.transform.position);
float step = MovementSpeed * Time.deltaTime;
float angularStep = this.angularSpeed * Time.deltaTime;
float circlingStep = this.circlingSpeed * Time.deltaTime;
if (Vector3.Distance(Vector3.zero, transform.position) > Range)
{
radialPosition.AddRadius((-1) * step);
radialPosition.AddAngle(angularStep);
MoveTo(radialPosition);
if (RotationUtils.InCounterClockwiseLimits(radialPosition.GetAngle(), zigZagAngleHigh, zigZagAngleLow) && zigZag)
{
angularSpeed = -1 * angularSpeed;
}
}
else // If in range, do appropriate attack.
{
radialPosition.AddAngle(circlingStep);
MoveTo(radialPosition);
if (RotationUtils.InCounterClockwiseLimits(radialPosition.GetAngle(), zigZagAngleHigh, zigZagAngleLow) && zigZag)
{
circlingSpeed = -1 * circlingSpeed;
}
MoveTo(radialPosition);
if (selfDestruct)
{
doDamageToBoss();
KillSelf();
}
// Mele attack
else if (Range <= Parameters.MAX_MELE_RANGE && !IsInvoking("doDamageToBoss"))
{
InvokeRepeating("doDamageToBoss", 0, this.attackFrequency);
}
// Ranged attack
else if (Range > Parameters.MAX_MELE_RANGE && !IsInvoking("spawnProjectile"))
{
InvokeRepeating("spawnProjectile", 0, this.attackFrequency);
}
}
}
/// <summary>
/// Spawns a projectile. Projectiles are fast, invunerable and self destructs on impact with the hero.
/// </summary>
void spawnProjectile()
{
this.colorModifier.FadeToDelected(this.attackFrequency / 3f);
RadialPosition thisRadialPos = RotationUtils.XYToRadialPos(transform.position);
this.projectile.SetRadialSpawnPosition(thisRadialPos.GetAngle(), thisRadialPos.GetRadius());
this.enemySpawner.InstantiateEnemyPrefab(this.projectile);
}
public bool isInAttackArea(float lowAngle, float highAngle, float nearRadius, float farRadius)
{
float spriteRadius = transform.Find("Sprite").GetComponent <SpriteRenderer>().bounds.size.x / 2;
float distanceToBossActual = Mathf.Max(Vector3.Distance(Vector3.zero, transform.position), 0);
float distanceToBossFar = distanceToBossActual + spriteRadius;
float distanceToBossNear = distanceToBossActual - spriteRadius;
RadialPosition radialPosition = RotationUtils.XYToRadialPos(this.transform.position);
float enemyWidthAngle = Mathf.Rad2Deg * Mathf.Acos(1 - Mathf.Pow(spriteRadius / Mathf.Sqrt(2 * distanceToBossActual), 2));
float enemyHighAngle = radialPosition.GetAngle() + enemyWidthAngle;
float enemyLowAngle = radialPosition.GetAngle() - enemyWidthAngle;
bool inHighAngle = RotationUtils.InCounterClockwiseLimits(enemyHighAngle, lowAngle, highAngle);
bool inLowAngle = RotationUtils.InCounterClockwiseLimits(enemyLowAngle, lowAngle, highAngle);
bool bossLargerThanRadius = RotationUtils.InCounterClockwiseLimits(lowAngle, enemyLowAngle, enemyHighAngle) &&
RotationUtils.InCounterClockwiseLimits(highAngle, enemyLowAngle, enemyHighAngle);
bool inRadius = distanceToBossNear <= farRadius && distanceToBossFar >= nearRadius;
return((inLowAngle || inHighAngle || bossLargerThanRadius) && inRadius);
}
public static Vector3 RadialPosToXY(RadialPosition radialPosition)
{
float angle = radialPosition.GetAngle();
angle = MakePositiveAngle(angle);
float radius = radialPosition.GetRadius();
float x = Mathf.Cos(Mathf.Deg2Rad * angle) * radius;
float y = Mathf.Sin(Mathf.Deg2Rad * angle) * radius;
if (Mathf.Abs(x) < 0.001)
{
x = 0;
}
if (Mathf.Abs(y) < 0.001)
{
y = 0;
}
return(new Vector3(x, y));
}
