83 lines
2.4 KiB
C#
83 lines
2.4 KiB
C#
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using UnityEngine;
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using System.Collections;
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using UnityEngine.AI;
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namespace Com.LuisPedroFonseca.ProCamera2D.TopDownShooter
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{
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public class EnemyWander : MonoBehaviour
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{
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public float WanderDuration = 10; // 0 to loop
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public float WaypointOffset = .1f;
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public float WanderRadius = 10f;
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NavMeshAgent _navMeshAgent;
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bool _hasReachedDestination;
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Vector3 _startingPos;
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float _startingTime;
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void Awake ()
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{
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_navMeshAgent = this.GetComponentInChildren<NavMeshAgent>();
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_startingPos = _navMeshAgent.transform.position;
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}
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public void StartWandering()
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{
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_startingTime = Time.time;
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GoToWaypoint();
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StartCoroutine(CheckAgentPosition());
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}
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public void StopWandering()
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{
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StopAllCoroutines();
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}
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IEnumerator CheckAgentPosition()
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{
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while(true)
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{
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if (_navMeshAgent.remainingDistance <= WaypointOffset && !_hasReachedDestination)
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{
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_hasReachedDestination = true;
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if(Time.time - _startingTime >= WanderDuration && WanderDuration > 0)
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{
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// Dispatch complete event
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Debug.Log("Stopped wandering");
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}
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else
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{
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GoToWaypoint();
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}
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}
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yield return null;
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}
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}
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void GoToWaypoint()
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{
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var path = new NavMeshPath();
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Vector3 newLocation = Vector3.zero;
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while (path.status == NavMeshPathStatus.PathPartial || path.status == NavMeshPathStatus.PathInvalid)
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{
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Vector3 ran = Random.insideUnitSphere * WanderRadius;
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ran.y = _startingPos.y;
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newLocation = _startingPos + ran;
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_navMeshAgent.CalculatePath(newLocation, path);
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}
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_navMeshAgent.SetDestination(newLocation);
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_hasReachedDestination = false;
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}
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#if UNITY_EDITOR
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void OnDrawGizmosSelected()
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{
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Gizmos.matrix = Matrix4x4.TRS(Application.isPlaying ? _startingPos : transform.position, Quaternion.identity, new Vector3(1f, 0f, 1f));
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Gizmos.DrawWireSphere(Vector3.zero, WanderRadius);
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}
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#endif
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}
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}
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