//--------------------------------------------------------
//    [Author]:           第二世界
//    [  Date ]:           Monday, July 31, 2017
//--------------------------------------------------------
using UnityEngine;
using System.Collections;
using UnityEngine.EventSystems;
using UnityEngine.Events;
using UnityEngine.UI;

namespace vnxbqy.UI
{
    public class AttackButton : Button
    {
        const float PRESS_TRIGGERTIME = 0.2f;
        UIEvent m_AttackEvent = new UIEvent();
        public UIEvent attackEvent { get { return m_AttackEvent; } }

        bool m_IsDown = false;
        public bool isDown {
            get {
                if (Application.isMobilePlatform)
                {
                    return Input.touchCount > 0 && m_IsDown;
                }
                else
                {
                    return Input.GetMouseButton(0) && m_IsDown;
                }
            }
        }

        bool clickResponse = false;
        float pressTime = 0f;
        bool m_IsPress = false;

        public void AddListener(UnityAction _action)
        {
            if (attackEvent != null)
            {
                attackEvent.AddListener(_action);
            }
        }

        public void RemoveListener()
        {
            if (attackEvent != null)
            {
                attackEvent.RemoveAllListeners();
            }
        }

        public override void OnPointerDown(PointerEventData eventData)
        {
            base.OnPointerDown(eventData);
            m_IsDown = true;
            m_IsPress = false;
            clickResponse = true;
            pressTime = Time.time + PRESS_TRIGGERTIME;
        }

        public override void OnPointerUp(PointerEventData eventData)
        {
            base.OnPointerUp(eventData);
            m_IsDown = false;
            m_IsPress = false;
            clickResponse = false;
        }

        protected override void OnDisable()
        {
            m_IsDown = false;
            m_IsPress = false;
            clickResponse = false;
        }

        private void LateUpdate()
        {
            if (!isDown)
            {
                return;
            }

            if (Time.time > pressTime)
            {
                m_IsPress = true;
            }

            if (!m_IsPress && clickResponse)
            {
                if (attackEvent != null)
                {
                    attackEvent.Invoke();
                }

                EffectMgr.Instance.PlayUIEffect(1021, 1500, this.transform, false);
                clickResponse = false;
            }

            if (m_IsPress)
            {
                if (attackEvent != null)
                {
                    attackEvent.Invoke();
                }
            }

        }

    }

}