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Assets/Plugins/ParadoxNotion/NodeCanvas/Tasks/Actions/Movement/Pathfinding/Patrol.cs

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+using System.Collections.Generic;
+using NodeCanvas.Framework;
+using ParadoxNotion.Design;
+using UnityEngine;
+
+using NavMeshAgent = UnityEngine.AI.NavMeshAgent;
+
+namespace NodeCanvas.Tasks.Actions
+{
+
+    [Category("Movement/Pathfinding")]
+    [Description("Move Randomly or Progressively between various game object positions taken from the list provided")]
+    public class Patrol : ActionTask<NavMeshAgent>
+    {
+
+        public enum PatrolMode
+        {
+            Progressive,
+            Random
+        }
+
+        [RequiredField, Tooltip("A list of gameobjects patrol points.")]
+        public BBParameter<List<GameObject>> targetList;
+        [Tooltip("The mode to use for patrol (progressive or random)")]
+        public BBParameter<PatrolMode> patrolMode = PatrolMode.Random;
+        public BBParameter<float> speed = 4;
+        public BBParameter<float> keepDistance = 0.1f;
+
+        private int index = -1;
+        private Vector3? lastRequest;
+
+        protected override string info {
+            get { return string.Format("{0} Patrol {1}", patrolMode, targetList); }
+        }
+
+        protected override void OnExecute() {
+
+            if ( targetList.value.Count == 0 ) {
+                EndAction(false);
+                return;
+            }
+
+            if ( targetList.value.Count == 1 ) {
+
+                index = 0;
+
+            } else {
+
+                if ( patrolMode.value == PatrolMode.Random ) {
+                    var newIndex = index;
+                    while ( newIndex == index ) {
+                        newIndex = Random.Range(0, targetList.value.Count);
+                    }
+                    index = newIndex;
+                }
+
+                if ( patrolMode.value == PatrolMode.Progressive ) {
+                    index = (int)Mathf.Repeat(index + 1, targetList.value.Count);
+                }
+            }
+
+            var targetGo = targetList.value[index];
+            if ( targetGo == null ) {
+                ParadoxNotion.Services.Logger.LogWarning("List game object is null on Patrol Action Task.", LogTag.EXECUTION, this);
+                EndAction(false);
+                return;
+            }
+
+            var targetPos = targetGo.transform.position;
+
+            agent.speed = speed.value;
+            if ( ( agent.transform.position - targetPos ).magnitude < agent.stoppingDistance + keepDistance.value ) {
+                EndAction(true);
+                return;
+            }
+        }
+
+        protected override void OnUpdate() {
+            var targetPos = targetList.value[index].transform.position;
+            if ( lastRequest != targetPos ) {
+                if ( !agent.SetDestination(targetPos) ) {
+                    EndAction(false);
+                    return;
+                }
+            }
+
+            lastRequest = targetPos;
+
+            if ( !agent.pathPending && agent.remainingDistance <= agent.stoppingDistance + keepDistance.value ) {
+                EndAction(true);
+            }
+        }
+
+        protected override void OnPause() { OnStop(); }
+        protected override void OnStop() {
+            if ( lastRequest != null && agent.gameObject.activeSelf ) {
+                agent.ResetPath();
+            }
+            lastRequest = null;
+        }
+
+        public override void OnDrawGizmosSelected() {
+            if ( agent && targetList.value != null ) {
+                foreach ( var go in targetList.value ) {
+                    if ( go != null ) {
+                        Gizmos.DrawSphere(go.transform.position, 0.1f);
+                    }
+                }
+            }
+        }
+    }
+}