private void UpdateEscaping(UpdateContext updateContext, CGoldenGoblinAI goldenGoblinAI, CTransform2D transform, float speedMultiplier)
{
// Escape speed is a bit faster than normal speed (3.5f)
const float Speed = SkypieaConstants.PixelsPerMeter * 4f;
Vector2 velocity = FlaiMath.NormalizeOrZero(transform.Position - _playerTransform.Transform.Position) * Speed * speedMultiplier * updateContext.DeltaSeconds;
goldenGoblinAI.Velocity = FlaiMath.ClampLength(goldenGoblinAI.Velocity + velocity, Speed);
transform.Position += goldenGoblinAI.Velocity * updateContext.DeltaSeconds;
transform.RotationVector = goldenGoblinAI.Velocity;
// if the goblin is outside the map, delete it
if (!SkypieaConstants.MapAreaInPixels.Inflate(128, 128).Contains(transform.Position))
{
goldenGoblinAI.Entity.Delete();
}
}
private bool ShouldEscape(Entity zombie, CGoldenGoblinAI goldenGoblinAI)
{
// is player too close?
const float DistanceToStartEscape = SkypieaConstants.PixelsPerMeter * 3;
if (Vector2.Distance(_playerTransform.Position, zombie.Transform.Position) < DistanceToStartEscape)
{
return true;
}
// is at last waypoint
if (goldenGoblinAI.CurrentWaypointIndex >= goldenGoblinAI.Waypoints.Count)
{
return true;
}
// has golden goblin been hit too much?
const float EscapeLifeBoundary = 0.6f; // awful name.. basically how much life must be taken (in %) for the goblin to start escaping?
CHealth health = zombie.Get<CHealth>();
return health.CurrentHealth < health.MaximumHealth * EscapeLifeBoundary;
}
// waypoint stun is atm 0 so this code doesn't even matter at all. but it should work just fine
private void UpdateWaypointStun(UpdateContext updateContext, CGoldenGoblinAI goldenGoblinAI, CTransform2D transform)
{
// this is frame-rate dependent but shouldnt matter too much
goldenGoblinAI.Velocity *= 0.98f;
transform.Position += goldenGoblinAI.Velocity * updateContext.DeltaSeconds;
if (goldenGoblinAI.WaypointStunTimer.HasFinished)
{
goldenGoblinAI.State = GoldenGoblinState.TravellingToWaypoint;
}
}
private void UpdateTravelling(UpdateContext updateContext, CTransform2D transform, CGoldenGoblinAI goldenGoblinAI, float speedMultiplier)
{
const float Speed = SkypieaConstants.PixelsPerMeter * 3.5f;
// calculate the new velocity
Vector2 velocity = FlaiMath.NormalizeOrZero(goldenGoblinAI.CurrentWaypoint - transform.Position) * Speed * speedMultiplier; // * updateContext.DeltaSeconds;
goldenGoblinAI.Velocity = FlaiMath.ClampLength(goldenGoblinAI.Velocity + velocity * updateContext.DeltaSeconds, Speed);
goldenGoblinAI.Velocity += new Vector2(velocity.Y, velocity.X) * FlaiMath.Sin(updateContext.DeltaSeconds * 3) / 8;
// if the goblin is near enough to a waypoint, move to the next waypoint
if (Vector2.Distance(transform.Position, goldenGoblinAI.CurrentWaypoint) < SkypieaConstants.PixelsPerMeter * 2)
{
// if the current waypoint is the last one, then change the state to escape
if (goldenGoblinAI.CurrentWaypointIndex + 1 >= goldenGoblinAI.Waypoints.Count)
{
goldenGoblinAI.State = GoldenGoblinState.EscapingFromPlayer;
return;
}
// change state to WaypointStun
goldenGoblinAI.CurrentWaypointIndex++;
goldenGoblinAI.WaypointStunTimer.Restart();
goldenGoblinAI.State = GoldenGoblinState.WaypointStun;
if (goldenGoblinAI.CurrentWaypointIndex >= goldenGoblinAI.Waypoints.Count)
{
goldenGoblinAI.CurrentWaypointIndex = goldenGoblinAI.CurrentWaypointIndex;
}
}
else
{
// otherwise move to the current waypoint
transform.Position += goldenGoblinAI.Velocity * updateContext.DeltaSeconds;
transform.RotationVector = goldenGoblinAI.Velocity;
}
}
