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Assets/Plugins/ParadoxNotion/NodeCanvas/Modules/StateMachines/Nodes/NestedFSMState.cs

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+using NodeCanvas.Framework;
+using ParadoxNotion.Design;
+using UnityEngine;
+
+
+namespace NodeCanvas.StateMachines
+{
+
+
+    [Name("Sub FSM")]
+    [Description("Execute a sub FSM OnEnter, and Stop that FSM OnExit. This state is Finished only when and if the sub FSM is finished as well.")]
+    [DropReferenceType(typeof(FSM))]
+    [ParadoxNotion.Design.Icon("FSM")]
+    public class NestedFSMState : FSMStateNested<FSM>
+    {
+
+        public enum FSMExitMode
+        {
+            StopAndRestart,
+            PauseAndResume
+        }
+
+        [SerializeField, ExposeField, Name("Sub FSM")]
+        private BBParameter<FSM> _nestedFSM = null;
+
+        [Tooltip("What will happen to the sub FSM when this state exits.")]
+        public FSMExitMode exitMode;
+
+        public override FSM subGraph { get { return _nestedFSM.value; } set { _nestedFSM.value = value; } }
+        public override BBParameter subGraphParameter => _nestedFSM;
+
+        //
+
+        protected override void OnEnter() {
+            if ( subGraph == null ) {
+                Finish(false);
+                return;
+            }
+
+            this.TryStartSubGraph(graphAgent, Finish);
+            OnUpdate();
+        }
+
+        protected override void OnUpdate() {
+            currentInstance.UpdateGraph(this.graph.deltaTime);
+        }
+
+        protected override void OnExit() {
+            if ( currentInstance != null ) {
+                if ( this.status == Status.Running ) {
+                    this.TryReadAndUnbindMappedVariables();
+                }
+                if ( exitMode == FSMExitMode.StopAndRestart ) {
+                    currentInstance.Stop();
+                } else {
+                    currentInstance.Pause();
+                }
+            }
+        }
+    }
+}