namespace Game
{
    public partial class AIEntityBase<T> : AIObjectBase<T> where T : new()
    {
        protected void FindTarget()
        {
            Selector(() =>
            {
                Condition("是否有目标", () => _entity.Target() != 0);
                Do("重新寻找目标", () =>
                {
                    //TODO 现在直接设置为玩家
                    _entity.SetTarget(Util.GetMaster().ID());
                    return ETaskStatus.Success;
                });
            });
        }

        protected void CheckStagger()
        {
            Condition($"检查硬直状态", () => !Util.EntityIsStagger(_entity));
        }

        protected void CheckModuleType(EAIModuleType moduleType)
        {
            Condition($"检查模块类型-{moduleType}", () => _entity.aI.ModuleType.Value == moduleType);
        }

        protected void CheckDistance(float min, float max)
        {
            Condition($"距离在{min}到{max}之间", () =>
            {
                var distance = Util.EntityDistance(_entity.ID(), _entity.Target());
                return distance >= min && distance <= max;
            });
        }

        protected void CastSkill(int index, bool needPermit)
        {
            Sequence(($"释放技能[{index}],{needPermit}"), () =>
            {
                if (needPermit) _checkAttackPermit();
                _stop();
                _castSkill(index);
                if (needPermit) _resetAttackPermit();
            });
        }

        private void _castSkill(int index)
        {
            Do($"释放技能[{index}]", () =>
            {
                var target = Util.GetEntity(_entity.Target());
                var dir = target.Pos() - _entity.Pos();
                Util.CastSkillMonster(_entity, index, dir);
                return ETaskStatus.Success;
            });
        }

        private void _checkAttackPermit()
        {
            Condition("检查攻击权限", () => _entity.aI.AttackPermit.Value);
        }

        private void _resetAttackPermit()
        {
            Do("重置攻击权限", () =>
            {
                _entity.aI.AttackPermit.Value = false;
                return ETaskStatus.Success;
            });
        }
    }
}