using UnityEngine;

namespace BehaviorDesigner.Runtime.Tasks.Movement
{
	[HelpURLAttribute("http://www.opsive.com/assets/BehaviorDesigner/Movement/documentation.php?id=10")]
	[TaskIcon("Assets/Behavior Designer Movement/Editor/Icons/{SkinColor}SearchIcon.png")]
	[TaskDescription("Search for a target by combining the wander, within hearing range, and the within seeing range tasks using the Unity NavMesh.")]
	[TaskCategory("Movement")]
	public class Search : NavMeshMovement
	{
		[Tooltip("How far ahead of the current position to look ahead for a wander")]
		public SharedFloat wanderDistance = 10f;

		[Tooltip("The amount that the agent rotates direction")]
		public SharedFloat wanderRate = 1f;

		[Tooltip("The field of view angle of the agent (in degrees)")]
		public SharedFloat fieldOfViewAngle = 90f;

		[Tooltip("The distance that the agent can see")]
		public SharedFloat viewDistance = 30f;

		[Tooltip("The LayerMask of the objects to ignore when performing the line of sight check")]
		public LayerMask ignoreLayerMask = 1 << LayerMask.NameToLayer("Ignore Raycast");

		[Tooltip("Should the search end if audio was heard?")]
		public SharedBool senseAudio = true;

		[Tooltip("How far away the unit can hear")]
		public SharedFloat hearingRadius = 30f;

		[Tooltip("The offset relative to the pivot position")]
		public SharedVector3 offset;

		[Tooltip("The target offset relative to the pivot position")]
		public SharedVector3 targetOffset;

		[Tooltip("The LayerMask of the objects that we are searching for")]
		public LayerMask objectLayerMask;

		[Tooltip("The further away a sound source is the less likely the agent will be able to hear it. Set a threshold for the the minimum audibility level that the agent can hear")]
		public SharedFloat audibilityThreshold = 0.05f;

		[Tooltip("The object that is found")]
		public SharedGameObject returnedObject;

		public override void OnStart()
		{
			base.OnStart();
			SetDestination(Target());
		}

		public override TaskStatus OnUpdate()
		{
			SetDestination(Target());
			returnedObject.Value = MovementUtility.WithinSight(transform, offset.Value, fieldOfViewAngle.Value, viewDistance.Value, objectLayerMask, targetOffset.Value, ignoreLayerMask);
			if (returnedObject.Value != null)
			{
				return TaskStatus.Success;
			}
			if (senseAudio.Value)
			{
				returnedObject.Value = MovementUtility.WithinHearingRange(transform, offset.Value, audibilityThreshold.Value, hearingRadius.Value, objectLayerMask);
				if (returnedObject.Value != null)
				{
					return TaskStatus.Success;
				}
			}
			return TaskStatus.Running;
		}

		private Vector3 Target()
		{
			Vector3 vector = transform.forward + Random.insideUnitSphere * wanderRate.Value;
			return transform.position + vector.normalized * wanderDistance.Value;
		}

		public override void OnReset()
		{
			base.OnReset();
			wanderDistance = 10f;
			wanderRate = 1f;
			fieldOfViewAngle = 90f;
			viewDistance = 30f;
			senseAudio = true;
			hearingRadius = 30f;
			audibilityThreshold = 0.05f;
		}
	}
}