客户端无法在服务器上生成对象 - Unity 镜像网络 c#

Question

我已经为此苦苦挣扎了一两天了。由于某种原因 NetworkServer.Spawn() 似乎不起作用。据我了解，可以从客户端调用 NetworkServer.Spawn() 以在服务器上生成和对象，并且从服务器上，该对象会在所有客户端上生成。目前，当客户端射击时，它只会出现在该客户端上（而不是在服务器上），而当主机射击时，弹丸会在主机和客户端上生成。

代码顶部有一个 using Mirror 标签，该脚本源自 Networkbehaviour。下面这段代码是在客户端调用的：

void Shoot()
{
        //Spawn porjectile on local machine
        GameObject shot = Instantiate(projectile) as GameObject;

        //Set shot projectile position
        shot.transform.position = projectilePoint.position;
        shot.transform.rotation = transform.rotation;

        //Set projectile component of the shot projectile
        Projectile shotProjectile = shot.GetComponent<Projectile>();

        //Set properties of shot projectile
        shotProjectile.damage = damage;
        shotProjectile.direction = projectilePoint.position - transform.position;
        shotProjectile.speed = projectileTravelSpeed;
        shotProjectile.team = team;
        shotProjectile.shotBy = gameObject;

        NetworkServer.Spawn(shot);
    
}

有没有人知道为什么射弹没有从客户端生成在服务器上？一个代码示例（在 c# 中）也会很有帮助。

Answer 1

NetworkServer.Spawn() 只能在服务器上调用。它使GameObject 被发送给所有客户端，因此他们可以看到它，与之交互等等。因此，您需要从客户端调用服务器上的一个函数，该函数将为您提供Spawn() 您的对象。

[Client]
void Shoot()
{
    //Call spawn on server
    CmdShoot(projectile, projectilePoint.position, transform.rotation);
}

[Command]
void CmdShoot(GameObject projectile, Vector3 position, Quaternion rotation)
{

    GameObject shot = Instantiate(projectile) as GameObject;

    //Set shot projectile position
    shot.transform.position = projectilePoint.position;
    shot.transform.rotation = transform.rotation;

    //Set projectile component of the shot projectile
    Projectile shotProjectile = shot.GetComponent<Projectile>();

    //Set properties of shot projectile
    shotProjectile.damage = damage;
    shotProjectile.direction = projectilePoint.position - transform.position;
    shotProjectile.speed = projectileTravelSpeed;
    shotProjectile.team = team;
    shotProjectile.shotBy = gameObject;

    NetworkServer.Spawn(shot);
    RpcOnShoot();
}

[ClientRpc]
void RpcOnShoot()
{
    //Called on all clients
}

或者调用NetworkServer.SpawnWithClientAuthority()，如果你希望实例化对象具有客户端权限（然后客户端需要设置shotProjectiles属性）。