first commit

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

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+using UnityEngine;
+using NodeCanvas.Framework;
+using ParadoxNotion.Design;
+
+using NavMeshAgent = UnityEngine.AI.NavMeshAgent;
+using NavMesh = UnityEngine.AI.NavMesh;
+using NavMeshHit = UnityEngine.AI.NavMeshHit;
+
+namespace NodeCanvas.Tasks.Actions
+{
+
+    [Category("Movement/Pathfinding")]
+    [Description("Makes the agent wander randomly within the navigation map")]
+    public class Wander : ActionTask<NavMeshAgent>
+    {
+
+        [Tooltip("The speed to wander with.")]
+        public BBParameter<float> speed = 4;
+        [Tooltip("The distance to keep from each wander point.")]
+        public BBParameter<float> keepDistance = 0.1f;
+        [Tooltip("A wander point can't be closer than this distance")]
+        public BBParameter<float> minWanderDistance = 5;
+        [Tooltip("A wander point can't be further than this distance")]
+        public BBParameter<float> maxWanderDistance = 20;
+        [Tooltip("If enabled, will keep wandering forever. If not, only one wander point will be performed.")]
+        public bool repeat = true;
+
+        protected override void OnExecute() {
+            agent.speed = speed.value;
+            DoWander();
+        }
+
+        protected override void OnUpdate() {
+            if ( !agent.pathPending && agent.remainingDistance <= agent.stoppingDistance + keepDistance.value ) {
+                if ( repeat ) {
+                    DoWander();
+                } else {
+                    EndAction();
+                }
+            }
+        }
+
+        void DoWander() {
+            var min = minWanderDistance.value;
+            var max = maxWanderDistance.value;
+            min = Mathf.Clamp(min, 0.01f, max);
+            max = Mathf.Clamp(max, min, max);
+            var wanderPos = agent.transform.position;
+            while ( ( wanderPos - agent.transform.position ).magnitude < min ) {
+                wanderPos = ( Random.insideUnitSphere * max ) + agent.transform.position;
+            }
+
+            NavMeshHit hit;
+            if ( NavMesh.SamplePosition(wanderPos, out hit, agent.height * 2, NavMesh.AllAreas) ) {
+                agent.SetDestination(hit.position);
+            }
+        }
+
+        protected override void OnPause() { OnStop(); }
+        protected override void OnStop() {
+            if ( agent.gameObject.activeSelf ) {
+                agent.ResetPath();
+            }
+        }
+    }
+}