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async function createBoss(level/*等级*/) {
    var position = new Box3Vector3(50, 20, 93);
    var scale = 1/16;
    var boss = world.createEntity({
        mesh: "mesh/蜘蛛boss.vb",
        position,
        meshScale: new Box3Vector3(scale, scale, scale),
        collides: true,
        fixed: false,
        gravity: true,
        id: 'boss',
    })
    boss.level = 1
    boss.addTag("boss");
    boss.enableDamage = true;
    boss.maxHp = 100 + level * 50;
    boss.onEntityContact(({ other }) => {
        if (!other.isPlayer) { return };
        other.hurt(boss.level * (Math.random() * gjxl), { attacker: boss });
    })
    boss.onDie(async ({ attacker }) => {
        if (attacker) { attacker.exp += 20 }
        boss.destroy()
        await sleep(2000)
        createBoss(boss.level + 1)
    })
    const Quat1 = new Box3Quaternion(0.000, 0.707, 0.000, 0.707)//初始方向

    allPlayers = []
    allZombies = []
    world.onTick(async ({ tick }) => {//如果时间变化
        if (tick % 16 == 0) {//如果tick值对16取模得0
            allPlayers = world.querySelectorAll('player')//添加所有玩家到玩家列表
            allZombies = [boss]//添加所有boss到boss列表
        }
        allZombies.forEach(async (e) => {//遍历整个boss列表
            let zomPos = e.position//boss位置
            if (tick % 11 == 0) {//如果tick值对11取模得0
                let target = allPlayers.sort((a, b) => {//遍历整个玩家实体
                    return a.position.distance(zomPos) - b.position.distance(zomPos)
                })[0]//选择其中一个玩家
                if (target) {//如果获取到了玩家
                    e.target = target
                }
            }
            if (e.target && e.target.hp != 0) {//判断是否获取到了玩家并且这个玩
                var direction = e.target.position.sub(zomPos); //方向
                var dist = direction.mag() //距离
                var speed = Math.random() * 0.5 //移动速度
                e.velocity.x = direction.x * speed / dist //x速度
                e.velocity.z = direction.z * speed / dist //z速度
                var orientation = Quat1.rotateY(Math.atan2(e.velocity.z, e.velocity.x))//方向
                e.meshOrientation.copy(orientation)//方向
            }
        })
    })
}

for (i = 0; i < 1; i++) {
    createBoss(10)
}

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