XYGame-AI设计1-普通ifelse

 public override void AI_UpdateMSWithAI()
    {
        cd_atk--;

        //如果目标非法，那么寻找另外一个目标
        if (target == null || target.IsInValid())
        {
            this.AI_SearchNewTarget();
            return;
        }
        if (isHurt) return;

        // 有目标 ，先判断是否在攻击范围内
        float dis = target.ClaculateDistance(x, y);
        if (dis < 2)
        {
            //攻击范围内
            this.AI_AttackTarget();
        }
        else
        {
            //不在攻击范围内 移动向目标
            this.AI_MoveToTarget();
        }
    }
    public virtual void AI_SearchNewTarget()
    {
        ArrayList heros = EnemyMgr.ins.GetEnemys();// HeroMgr.ins.GetHeros();
        float minDis = 9999.0f;

        foreach (Entity h in heros)
        {//找出一个最近的玩家 作为锁定目标
            if (h == this) continue;
            float dis = h.ClaculateDistance(x, y);
            if (dis < minDis)
            {
                target = h;
                minDis = dis;
            }
        }
    }

    public virtual void AI_MoveToTarget()
    { 
        dir = (int)Utils.GetAngle(this.pos, target.pos);
    }
    public virtual void AI_AttackTarget()
    {
        if (target.isDie)
        {
            target = null;
            stand = true;
            return;
        }
        if (cd_atk <= 0)
        {
            cd_atk = 80;// 2S
            atk = true;
        }
        else
        {
            stand = true;
        }
    }

下一篇 重构为 FSM 

源代码：https://git.oschina.net/dreamyouxi/XYGame