using Thousandto.Cfg.Data;
using Thousandto.Code.Center;
using Thousandto.Core.Asset;
using Thousandto.Plugins.Common.UniScene;
using UnityEngine;

namespace Thousandto.Code.Logic
{
    //锁定弹道
    public class LockTrajectoryObj : Entity
    {
        #region//私有变量
        private bool _postDelete = false;
        private float _hitSprDis = 0f;
        #endregion

        #region//属性
        public Character Owner { get; private set; }
        public DeclareSkill SkillCfg { get; private set; }
        public SkillVisualInfo VisualInfo { get; private set; }
        public PlayLockTrajectoryEventInfo EventInfo { get; private set; }
        public FGameObjectVFX Vfx { get; private set; }
        public ulong TargetID { get; private set; }
        public float CurSpeed { get; private set; }
        #endregion

        #region//初始化,加载Skin,卸载处理
        protected override FSkinBase OnSetupSkin()
        {
            FSkinModel skin = GameCenter.LuaSystem.Adaptor.CreateFSkinModel(FSkinTypeCode.Custom);
            skin.SetLayer(LayerUtils.SceneVFX);
            return skin;
        }

        protected override bool OnInitializeAfter(EntityInitInfo baseInfo)
        {
            base.OnInitializeAfter(baseInfo);
            var info = baseInfo as LockTrajectoryObjInitInfo;
            SyncInfo(info);
            return true;
        }

        protected override void OnUninitializeBefore()
        {
            if (Vfx != null)
            {
                Vfx.Destroy();
            }
            base.OnUninitializeBefore();
        }

        public void SyncInfo(LockTrajectoryObjInitInfo info)
        {
            Owner = info.Owner;
            SkillCfg = info.SkillCfg;
            VisualInfo = info.VisualInfo;
            EventInfo = info.EventInfo;
            TargetID = info.TargetID;

            var startTrans = Owner.GetSlotTransform(EventInfo.StartSlot);
            SetPosition(startTrans.position);

            var target = GameCenter.GameSceneSystem.FindEntity<Character>(TargetID);
            if(target == null)
            {
                PostDelete();
                return;
            }
            SetDirection((target.Position - Position), false, false);

            Vfx = new FGameObjectVFX(ModelTypeCode.SkillVFX, EventInfo.VfxID);
            Vfx.SetParent(this.ModelTransform);
            Vfx.SetPosition(Position);
            Vfx.SetLayer(this.Layer);
            Vfx.Play();
            Vfx.LiftTime = 10f;

            CurSpeed = EventInfo.FlySpeed;
            _postDelete = false;
            _hitSprDis = EventInfo.VfxRadius / 2f + target.PropMoudle.LogicBodyRadius / 2f;
            _hitSprDis = _hitSprDis * _hitSprDis;
        }

        protected override void OnUpdate(float dt)
        {
            base.OnUpdate(dt);

            if (_postDelete)
                return;

            if(EventInfo.FlyAddSpeed != 0f)
            {
                CurSpeed += dt * EventInfo.FlyAddSpeed;
            }

            var target = GameCenter.GameSceneSystem.FindEntity<Character>(TargetID);
            if (target == null)
            {
                PostDelete();
                return;
            }
            var dir = (target.Position - Position).normalized;
            SetDirection(dir, true, true);

            SetPosition(Position + dir * CurSpeed);

            if(Vector3.SqrMagnitude(target.Position - Position) <= _hitSprDis)
            {
                //碰撞到了，直接消失，受击表现在受击消息里边处理
                PostDelete();
                return;
            }
            var newDir = (target.Position - Position).normalized;
            if(Vector3.Dot(dir, newDir) <= 0f)
            {
                //如果路过了目标，表示已经碰到了
                PostDelete();
                return;
            }
        }

        private void PostDelete()
        {
            if (!_postDelete)
            {
                var baseScene = Scene as BaseScene;
                if (baseScene != null)
                {
                    baseScene.DeleteEntity(ID);
                }
                _postDelete = true;
            }
        }
        #endregion
    }
}