using UnityEngine;

namespace BehaviorDesigner.Runtime.Tasks.Movement
{
	[HelpURLAttribute("http://www.opsive.com/assets/BehaviorDesigner/Movement/documentation.php?id=11")]
	[TaskIcon("Assets/Behavior Designer Movement/Editor/Icons/{SkinColor}CanSeeObjectIcon.png")]
	[TaskCategory("Movement")]
	[TaskDescription("Check to see if the any objects are within sight of the agent.")]
	public class CanSeeObject : Conditional
	{
		[Tooltip("Should the 2D version be used?")]
		public bool usePhysics2D;

		[Tooltip("The object that we are searching for. If this value is null then the objectLayerMask will be used")]
		public SharedGameObject targetObject;

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

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

		[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 = 1000f;

		[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 object that is within sight")]
		public SharedGameObject returnedObject;

		public override TaskStatus OnUpdate()
		{
			if (usePhysics2D)
			{
				if (targetObject.Value == null)
				{
					returnedObject.Value = MovementUtility.WithinSight2D(transform, offset.Value, fieldOfViewAngle.Value, viewDistance.Value, objectLayerMask, targetOffset.Value, ignoreLayerMask);
				}
				else
				{
					returnedObject.Value = MovementUtility.WithinSight2D(transform, offset.Value, fieldOfViewAngle.Value, viewDistance.Value, targetObject.Value, targetOffset.Value, ignoreLayerMask);
				}
			}
			else if (targetObject.Value == null)
			{
				returnedObject.Value = MovementUtility.WithinSight(transform, offset.Value, fieldOfViewAngle.Value, viewDistance.Value, objectLayerMask, targetOffset.Value, ignoreLayerMask);
			}
			else
			{
				returnedObject.Value = MovementUtility.WithinSight(transform, offset.Value, fieldOfViewAngle.Value, viewDistance.Value, targetObject.Value, targetOffset.Value, ignoreLayerMask);
			}
			if (returnedObject.Value != null)
			{
				return TaskStatus.Success;
			}
			return TaskStatus.Failure;
		}

		public override void OnReset()
		{
			fieldOfViewAngle = 90f;
			viewDistance = 1000f;
			offset = Vector3.zero;
		}

		public override void OnDrawGizmos()
		{
			MovementUtility.DrawLineOfSight(base.Owner.transform, offset.Value, fieldOfViewAngle.Value, viewDistance.Value, usePhysics2D);
		}
	}
}