Unity结合C++开发服务器实现多人游戏（七）

2017-02-27

角色登场,消失及同步化

以下实现客户端登陆后, 构建角色的登场，消失在游戏场景中.

1. 客户端A登陆成功的话,角色的位置发送给服务器”进入游戏”通知.

2. 服务器端接收信息后,发送客户端A已经存在角色信息，并且发送其它客户端新的信息.

3. 客户端接收后添加新角色到游戏场景中.

客户端 "进入游戏!" 的信息在PIDL中定义.

global Simple 1000

{

JoinGameScene([in] float x, [in] float y, [in] float z, [in] float angle);

Player_Appear([in] int hostID, [in] std::wstring userID,

[in] float x, [in] float y, [in] float z,

[in] float vx, [in] float vy, [in] float vz,

[in] float angle);

Player_Disappear([in] int hostID);

...

客户端登陆成功的话，通知服务器 "进入游戏!".

m_stub.NotifyLoginSuccess = (HostID remote, RmiContext rmiContext) =>

{

// join the world!

m_proxy.JoinGameScene(HostID.HostID_Server, RmiContext.ReliableSend,

m_localPlayer.transform.position.x,

m_localPlayer.transform.position.y,

m_localPlayer.transform.position.z,

m_localPlayer.GetComponent<PlayControl>().carAngle); // show 30 ends here

...

现在，添加服务器处理的代码.

class SimpleServer

{

DECRMI_Simple_JoinGameScene;

...

DEFRMI_Simple_JoinGameScene(SimpleServer)

{

// validation check

auto it = m_remoteClients.find(remote);

if (it == m_remoteClients.end())

{

return true;

}

auto& rc = it->second;

// update player info

rc->m_x = x;

rc->m_y = y;

rc->m_z = z;

rc->m_angle = angle;

以上代码中JoinGameScene继续添加一下代码.

DEFRMI_Simple_JoinGameScene(SimpleServer)

{

...

assert(it->first == remote);

// Let incomer know others, let others know incomers.

for (auto otherIter : m_remoteClients)

{

if (otherIter.first != it->first)

{

auto& otherRC = otherIter.second;

m_proxy.Player_Appear((HostID)it->first, RmiContext::ReliableSend,

(HostID)otherIter.first,

otherRC->m_userID,

otherRC->m_x, otherRC->m_y, otherRC->m_z,

otherRC->m_vx, otherRC->m_vy, otherRC->m_vz,

otherRC->m_angle);

m_proxy.Player_Appear((HostID)otherIter.first, RmiContext::ReliableSend,

(HostID)it->first,

rc->m_userID,

rc->m_x, rc->m_y, rc->m_z,

rc->m_vx, rc->m_vy, rc->m_vz,

rc->m_angle);

}

以上代码解析如下：

1. 接收到的更新游戏角色的信息。

2. 传递之前客户端名单，告知客户端新用户的加入。同样，告知新客户端现有客户端的加入。

客户端离开的情况，进行相反的处理. 离开后，出现"客户端OO消失"的信息.

m_netServer->OnClientLeave = [this](CNetClientInfo* info, ErrorInfo*, const ByteArray&)

{

// let others know the disappear

vector<int> others;

for (auto otherIter : m_remoteClients)

{

others.push_back(otherIter.first);

}

m_proxy.Player_Disappear((HostID*)others.data(), others.size(),

RmiContext::ReliableSend,

info->m_HostID);

...

调用以上远程函数时，变量HostID的数组进入.这样的话，可对多个设备进行信息发送.

添加客户端中调用Player_Appear的处理代码.，在游戏场景中角色登场.

public class NetManager : MonoBehaviour

{

public GameObject m_remotePlayerPrefab;

void Start()

{

m_stub.Player_Appear = (HostID remote, RmiContext rmiContext, int hostID, System.String userID, float x, float y, float z, float vx, float vy, float vz, float angle) =>

{

if (hostID != (int)m_netClient.GetLocalHostID())

{

var rot = Quaternion.AngleAxis(angle, new UnityEngine.Vector3(0, 1, 0));

var remotePlayerCharacter = (GameObject)Instantiate(m_remotePlayerPrefab, new UnityEngine.Vector3(x, y, z), rot);

remotePlayerCharacter.name = "RemotePlayer/" + hostID.ToString();

}

return true;

};

设置以下条件.

Unity Editor中选择NetManager GameObject后，在 Inspector中 m_remotePlayerPrefab下添加名为RemotePlayer的Prefab.如果没有 RemoteCar Prefab的话，制作场景内LocalPlayer的复制版后，并删除所有的 Script Behavior.

调用Player_Disappear后, 此角色在游戏场景中被删除.

m_stub.Player_Disappear = (Nettention.Proud.HostID remote,

Nettention.Proud.RmiContext rmiContext, int hostID) =>

{

var g = GameObject.Find("RemotePlayer/" + hostID.ToString());

if (g != null)

{

Destroy(g);

}

return true;

};

现在进行测试. 运行两个以上的客户端后，角色登场.