using CoreGame;
using Entitas;
using UnityEngine;

namespace CoreGame.Render
{
    public class LocationSyncSystem : IExecuteSystem
    {
        private readonly Contexts m_Contexts;
        private readonly Matcher<CombatEntity> m_PosMatcher;
        private static readonly object s_EntityNoMove = new object();

        public LocationSyncSystem(Contexts contexts)
        {
            m_Contexts = contexts;
            m_PosMatcher = (Matcher<CombatEntity>)Matcher<CombatEntity>.AllOf(CombatComponentsLookup.TransformProxy).
                NoneOf(CombatComponentsLookup.JoystickProxy,
                    CombatComponentsLookup.VirtualCameraProxy, 
                    CombatComponentsLookup.Dead);
            m_PosMatcher.componentNames = CombatComponentsLookup.componentNames;

            RealTimeChart.Instance.AddTrack("LocationSyncSystemX", UnityEngine.Color.yellow);
            RealTimeChart.Instance.AddTrack("LocationSyncSystemY", UnityEngine.Color.blue);
        }

        public void Execute(float deltaTime)
        {
            if (deltaTime < BattleConst.Epsilon)
                return;
            
            var ces = m_Contexts.combat.GetGroup(MatcherExt.s_MovementMatcher).GetEntities(Contexts.s_CacheEntities);
            var dtRevese = 1.0f / (deltaTime * deltaTime);
            var cesCount = ces.Count;
            for (int i = 0; i < cesCount; i++)
            {
                var re = ces[i];
                var transform = (TransformProxy)re.GetComponent(CombatComponentsLookup.TransformProxy);
                var speedSqr = (transform.position - transform.lastPosition).sqrMagnitude * dtRevese;
                re.DispatchEvent(ClientEvent.NoMovementTime, speedSqr > 0.04f ? null : s_EntityNoMove);

                // todo : 如果变换的多的话，需要加响应系统同步
                // if (BattleModule.Instance.worldType != WorldType.Battle)
                {
                    var animProxy = (AnimationProxy)re.GetComponent(CombatComponentsLookup.AnimationProxy);
                    if (animProxy != null)
                    {
                        // 时间减缓
                        if (speedSqr > 0.04)
                        {
                            animProxy.Play(FNameLookup.Move);
                        }
                        else if (speedSqr < 0.01)
                        {
                            animProxy.Play(FNameLookup.Idle);
                        }
                    }
                    transform.Sync();
                    transform.Flush();
                }
            }
        }
    }
}