triggerEventStoreHitObject.cs

// (c) Copyright HutongGames, LLC 2010-2013. All rights reserved.

using System;
using UnityEngine;

namespace HutongGames.PlayMaker.Actions
{
    [ActionCategory(ActionCategory.Physics)]
    [Tooltip("Detect collisions with objects that have RigidBody components. \nNOTE: The system events, TRIGGER ENTER, TRIGGER STAY, and TRIGGER EXIT are sent when any object collides with the trigger. Use this action to filter collisions by Tag.")]
    public class TriggerEventStoreHitObject : FsmStateAction
    {
        [Tooltip("The type of trigger event to detect.")]
        public TriggerType trigger;

        [UIHint(UIHint.Tag)]
        [Tooltip("Filter by Tag.")]
        public FsmString collideTag;

        [Tooltip("Event to send if the trigger event is detected.")]
        public FsmEvent sendEvent;

        [UIHint(UIHint.Variable)]
        [Tooltip("Store the GameObject that collided with the Owner of this FSM.")]
        public FsmGameObject storeCollider;

        public FsmGameObject hitObject;

        public override void Reset()
        {
            trigger = TriggerType.OnTriggerEnter;
            collideTag = "Untagged";
            sendEvent = null;
            storeCollider = null;
        }

        public override void OnPreprocess()
        {
            switch (trigger)
            {
                case TriggerType.OnTriggerEnter:
                    Fsm.HandleTriggerEnter = true;
                    break;
                case TriggerType.OnTriggerStay:
                    Fsm.HandleTriggerStay = true;
                    break;
                case TriggerType.OnTriggerExit:
                    Fsm.HandleTriggerExit = true;
                    break;
            }
        }

        void StoreCollisionInfo(Collider collisionInfo)
        {
            storeCollider.Value = collisionInfo.gameObject;
            hitObject.Value = Fsm.TriggerCollider.gameObject;
        }

        public override void DoTriggerEnter(Collider other)
        {
            if (trigger == TriggerType.OnTriggerEnter)
            {
               
                if (other.gameObject.tag == collideTag.Value)
                {
                    StoreCollisionInfo(other);
                    Fsm.Event(sendEvent);
                }
            }
        }

        public override void DoTriggerStay(Collider other)
        {
            if (trigger == TriggerType.OnTriggerStay)
            {
               
                if (other.gameObject.tag == collideTag.Value)
                {
                    StoreCollisionInfo(other);
                    Fsm.Event(sendEvent);
                }
            }
        }

        public override void DoTriggerExit(Collider other)
        {
            if (trigger == TriggerType.OnTriggerExit)
            {
               
                if (other.gameObject.tag == collideTag.Value)
                {
                    StoreCollisionInfo(other);

                    Fsm.Event(sendEvent);
                }
            }
        }

        public override string ErrorCheck()
        {
            return ActionHelpers.CheckOwnerPhysicsSetup(Owner);
        }


    }
}