using Entitas;
using UnityEngine;
using Game;

//死亡流程控制
public class DieSystem : IExecuteSystem, IInitializeSystem
{
    private IGroup<GameEntity> _entities;

    public void Initialize()
    {
        _entities = Util.GetGroup(GameMatcher.Hp);
    }

    public void Execute()
    {
        foreach (var entity in _entities)
        {
            UpdateDie(entity);
        }
    }

    private void UpdateDie(GameEntity entity)
    {
        var hp = entity.hp;
        if (hp.IsAlive)
        {
            return;
        }

        if (Util.IsPause(entity))
        {
            return;
        }

        if (hp.IsDying)
        {
            hp.DyingTime -= Time.deltaTime;
            if (hp.DyingTime <= 0)
            {
                hp.DyingTime = 0;
                hp.IsDying = false;
                if (entity.IsMaster())
                {
                    UIManager.Instance.Open(EuiPage.Die);
                }
                else
                {
                    //创建尸体特效
                    entity.CastShadow(1000, ECastShadowType.DeadBody);
                    //掉落pt
                    CreatePt(entity.Pos());
                    //死亡事件通知
                    entity.OnDie();
                    Util.DestroyEntity(entity);
                }
            }
        }
        else
        {
            if (entity.hasMove && !entity.move.IsGround)
            {
                return;
            }

            //死亡动画
            entity.animation.DieMsg = true;
            //浮空
            entity.move.Velocity = new Vector3((entity.move.Velocity.x > 0 ? 1 : -1) * 3, 3, 0);
            hp.DyingTime = GameConst.DyingTime;
            hp.IsDying = true;
            entity.view.GameObjectLogic.SetActive(false);
        }
    }

    private void CreatePt(Vector3 pos)
    {
        pos = new Vector3(pos.x, 0, pos.z);
        var count = GameRandom.Randint(0, 4);
        for (int i = 0; i < count; i++)
        {
            var pointPos = pos + GameRandom.RandomVector3(-0.2f, 0.2f);
            var dir = pointPos - pos;
            var cfgId = GameRandom.Roll(0.7f) ? GameConst.PtRedId : GameConst.PtBlueId;
            Util.CreateEntity(cfgId, (entity) =>
            {
                entity.point.CastSpeed = dir;
                Util.SetEntityPos(entity, pointPos);
            });
        }
    }
}