Moving characters randomly

The following custom Action allows you to have a character move randomly within a circle, given the circle's centre position and minimum/maximum radius to move within.  To use it, create a new C# file named ActionCharMoveRandom.cs and follow the instructions in the "Custom Actions" chapter of the Manual.

ActionCharMoveRandom.cs:

using UnityEngine;

using System.Collections;

using System.Collections.Generic;



#if UNITY_EDITOR

using UnityEditor;

#endif



namespace AC

{



    [System.Serializable]

    public class ActionCharMoveRandom : Action

    {



        public Marker centerMarker;

        public int centerMarkerConstantID = 0;

        public int centerMarkerParameterID = -1;



        public float minRadius = 0f;

        public int minRadiusParameterID = -1;



        public float maxRadius = 10f;

        public int maxRadiusParameterID = -1;



        public Char charToMove;

        public int charToMoveID = 0;

        public int charToMoveParameterID = -1;



        public bool isPlayer;

        public PathSpeed speed;

        public bool pathFind = true;

        public bool doFloat = false;





        public ActionCharMoveRandom ()

        {

            this.isDisplayed = true;

            category = ActionCategory.Character;

            title = "Move randomly";

            description = "Moves a random point within a circle, given a centre-point and a maximum radius.";

        }





        public override void AssignValues (List<ActionParameter> parameters)

        {

            centerMarker = AssignFile <Marker> (parameters, centerMarkerParameterID, centerMarkerConstantID, centerMarker);

            minRadius = AssignFloat (parameters, minRadiusParameterID, minRadius);

            maxRadius = AssignFloat (parameters, maxRadiusParameterID, maxRadius);

            minRadius = Mathf.Clamp (minRadius, 0f, maxRadius);



            charToMove = AssignFile <Char> (parameters, charToMoveParameterID, charToMoveID, charToMove);

            if (isPlayer)

            {

                charToMove = KickStarter.player;

            }

        }

        


        


        override public float Run ()

        {

            if (!isRunning)

            {

                if (charToMove)

                {

                    Paths path = charToMove.GetComponent <Paths>();

                    if (path == null)

                    {

                        ACDebug.LogWarning ("Cannot move a character with no Paths component");

                    }

                    else

                    {

                        if (charToMove is NPC)

                        {

                            NPC npcToMove = (NPC) charToMove;

                            npcToMove.StopFollowing ();

                        }



                        path.pathType = AC_PathType.ForwardOnly;

                        path.pathSpeed = speed;

                        path.affectY = true;



                        Vector3[] pointArray;

                        Vector3 targetPosition = GetRandomPoint ();



                        if (SceneSettings.ActInScreenSpace ())

                        {

                            targetPosition = AdvGame.GetScreenNavMesh (targetPosition);

                        }



                        float distance = Vector3.Distance (targetPosition, charToMove.transform.position);

                        if (distance <= KickStarter.settingsManager.destinationAccuracy)

                        {

                            isRunning = false;

                            return 0f;

                        }



                        if (pathFind && KickStarter.navigationManager)

                        {

                            pointArray = KickStarter.navigationManager.navigationEngine.GetPointsArray (charToMove.transform.position, targetPosition, charToMove);

                        }

                        else

                        {

                            List<Vector3> pointList = new List<Vector3>();

                            pointList.Add (targetPosition);

                            pointArray = pointList.ToArray ();

                        }



                        if (speed == PathSpeed.Walk)

                        {

                            charToMove.MoveAlongPoints (pointArray, false, pathFind);

                        }

                        else

                        {

                            charToMove.MoveAlongPoints (pointArray, true, pathFind);

                        }



                        if (charToMove.GetPath ())

                        {

                            if (!pathFind && doFloat)

                            {

                                charToMove.GetPath ().affectY = true;

                            }

                            else

                            {

                                charToMove.GetPath ().affectY = false;

                            }

                        }



                        if (willWait)

                        {

                            isRunning = true;

                            return defaultPauseTime;

                        }

                    }

                }



                return 0f;

            }

            else

            {

                if (charToMove.GetPath () == null)

                {

                    isRunning = false;

                    return 0f;

                }

                else

                {

                    return defaultPauseTime;

                }

            }

        }





        override public void Skip ()

        {

            if (charToMove)

            {

                charToMove.EndPath ();



                if (charToMove is NPC)

                {

                    NPC npcToMove = (NPC) charToMove;

                    npcToMove.StopFollowing ();

                }

                


                Vector3[] pointArray;

                Vector3 targetPosition = GetRandomPoint ();

                


                if (SceneSettings.ActInScreenSpace ())

                {

                    targetPosition = AdvGame.GetScreenNavMesh (targetPosition);

                }

                


                if (pathFind && KickStarter.navigationManager)

                {

                    pointArray = KickStarter.navigationManager.navigationEngine.GetPointsArray (charToMove.transform.position, targetPosition);

                    KickStarter.navigationManager.navigationEngine.ResetHoles (KickStarter.sceneSettings.navMesh);

                }

                else

                {

                    List<Vector3> pointList = new List<Vector3>();

                    pointList.Add (targetPosition);

                    pointArray = pointList.ToArray ();

                }

                


                int i = pointArray.Length-1;



                if (i>0)

                {

                    charToMove.SetLookDirection (pointArray[i] - pointArray[i-1], true);

                }

                else

                {

                    charToMove.SetLookDirection (pointArray[i] - charToMove.transform.position, true);

                }



                charToMove.Teleport (pointArray [i]);

            }

        }





        public Vector3 GetRandomPoint ()

        {

            float radius = Random.Range (minRadius, maxRadius);

            Vector2 randomInCircle2D = (Vector3) Random.insideUnitCircle * radius;



            if (SceneSettings.IsUnity2D ())

            {

                return centerMarker.transform.position + new Vector3 (randomInCircle2D.x, randomInCircle2D.y, 0f);

            }



            return centerMarker.transform.position + new Vector3 (randomInCircle2D.x, 0f, randomInCircle2D.y);

        }



        


        #if UNITY_EDITOR



        override public void ShowGUI (List<ActionParameter> parameters)

        {

            isPlayer = EditorGUILayout.Toggle ("Is Player?", isPlayer);



            if (!isPlayer)

            {

                charToMoveParameterID = Action.ChooseParameterGUI ("Character to move:", parameters, charToMoveParameterID, ParameterType.GameObject);

                if (charToMoveParameterID >= 0)

                {

                    charToMoveID = 0;

                    charToMove = null;

                }

                else

                {

                    charToMove = (Char) EditorGUILayout.ObjectField ("Character to move:", charToMove, typeof (Char), true);

                    


                    charToMoveID = FieldToID <Char> (charToMove, charToMoveID);

                    charToMove = IDToField <Char> (charToMove, charToMoveID, false);

                }

            }



            centerMarkerParameterID = Action.ChooseParameterGUI ("Marker to reach:", parameters, centerMarkerParameterID, ParameterType.GameObject);

            if (centerMarkerParameterID >= 0)

            {

                centerMarkerConstantID = 0;

                centerMarker = null;

            }

            else

            {

                centerMarker = (Marker) EditorGUILayout.ObjectField ("Centre-point:", centerMarker, typeof (Marker), true);

                


                centerMarkerConstantID = FieldToID <Marker> (centerMarker, centerMarkerConstantID);

                centerMarker = IDToField <Marker> (centerMarker, centerMarkerConstantID, false);

            }



            minRadiusParameterID = Action.ChooseParameterGUI ("Minimum radius:", parameters, minRadiusParameterID, ParameterType.Float);

            if (minRadiusParameterID < 0)

            {

                minRadius = EditorGUILayout.FloatField ("Minimum radius:", minRadius);

            }



            maxRadiusParameterID = Action.ChooseParameterGUI ("Maximum radius:", parameters, maxRadiusParameterID, ParameterType.Float);

            if (maxRadiusParameterID < 0)

            {

                maxRadius = EditorGUILayout.FloatField ("Maximum radius:", maxRadius);

            }



            speed = (PathSpeed) EditorGUILayout.EnumPopup ("Move speed:" , speed);

            pathFind = EditorGUILayout.Toggle ("Pathfind?", pathFind);

            if (!pathFind)

            {

                doFloat = EditorGUILayout.Toggle ("Ignore gravity?", doFloat);

            }

            willWait = EditorGUILayout.Toggle ("Wait until finish?", willWait);



            AfterRunningOption ();

        }





        override public void AssignConstantIDs (bool saveScriptsToo)

        {

            if (saveScriptsToo)

            {

                if (!isPlayer && charToMove != null && charToMove.GetComponent <NPC>())

                {

                    AddSaveScript <RememberNPC> (charToMove);

                }

            }



            if (!isPlayer)

            {

                AssignConstantID <Char> (charToMove, charToMoveID, charToMoveParameterID);

            }

        }



        #endif

        


    }



}