using CoreGame;
using Entitas;

namespace CoreGame.Render
{
    public class TransformSyncSystem: IExecuteSystem
    {
        private readonly CombatContext m_Contexts;
        public TransformSyncSystem(CombatContext contexts)
        {
            m_Contexts = contexts;
        }

        public void Execute(float deltaTime)
        {
            m_Contexts.GetGroup(MatcherExt.s_MovementMatcher).GetEntities(Contexts.s_CacheEntities);

            for (int i = 0; i < Contexts.s_CacheEntities.Count; i++)
            {
                var re = Contexts.s_CacheEntities[i];
                var transform = re.transformProxy;
                var cacheRender = transform.GetRenderPosition();
                transform.RenderSync(deltaTime);
                var renderPosition = transform.GetRenderPosition();
                if (re.hasAnimationProxy)
                {
                    // 时间减缓
                    var speedSqr = (cacheRender - renderPosition).sqrMagnitude / (deltaTime * deltaTime);
                    if (speedSqr > 0.04)
                    {
                        re.animationProxy.Play(FNameLookup.Move);
                    }
                    else if (speedSqr < 0.01)
                    {
                        re.animationProxy.Play(FNameLookup.Idle);
                    }
                }
            }
        }
    }
}