Javascript 在 node.js 上的 socket.io 上发送消息 client->server->client
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Sending messages client->server->client on socket.io on node.js
提问by test
I'm using NodeJS+Socket.IO for simple web game. It works. Why?
我正在使用 NodeJS+Socket.IO 进行简单的网页游戏。有用。为什么？
Here's my server.js
这是我的 server.js
var app = require('express').createServer();
var io = require('socket.io').listen(app);
io.sockets.on('connection', function (socket) {
socket.on('set nickname' , function (nickname) {
socket.nickname = nickname;
console.log(nickname + ' just connected!');
});
socket.on('msg' , function (msg) {
socket.msg = msg;
io.sockets.emit('response', msg);
});
socket.on('updatePlayer' , function (updatePlayer) {
console.log("Someone just moved on the map!");
});
});
app.listen(8080);
The reason I know it works is because, when I load the page and this script executes:
我知道它有效的原因是，当我加载页面并执行此脚本时：
// SERVER STUFF
socket.on('connect', function () {
console.log('We are connected!');
name = $(".name").val();
this.emit('set nickname', name, function (success) {});
msg = name + "|" + currX + "|" + currY + "|" + currentMap;
this.emit('msg', msg, function (success) {});
socket.on('response', function (data) {
var theMsg = data.split("|");
sayDialog("New player! " + theMsg[0] + " connected on map " + theMsg[3] + " on coordinates (" + theMsg[1] + "," + theMsg[2] + ")");
});
});
I get in my dialogbox ("CSS div") something like New player! weka connected on map 4 on coordinates (10,5)
我进入我的对话框（“CSS div”），类似于 New player! weka connected on map 4 on coordinates (10,5)
OK, cool, so it works! However, when I "move" I try sending a message to server using this
好的，很酷，所以它起作用了！但是，当我“移动”时，我尝试使用它向服务器发送消息
socket.on('updatePlayer', function () {
console.log("Testing...");
});
I don't even see consolesay Testing. I don't know why.
我什至没有看到console说测试。我不知道为什么。
回答by Wilk
Client-side.A player moves and the function movePlayer is executed:
客户端。玩家移动并执行 movePlayer 函数：
function movePlayer () {
socket.emit ('player move', {map: 4, coords: '0.0'});
}
socket.on ('updatePlayer', function (msg) {
console.log ('A player moves on map ' + msg.map + ' on coords ' + msg.coords);
});
Server-side.When someone moves, a 'updatePlayer' is emitted for each socket except the original player. On each client side, the updatePlayer is intercepted.
服务器端。当有人移动时，除了原始玩家之外，每个套接字都会发出一个“updatePlayer”。在每个客户端，都会拦截 updatePlayer。
socket.on ('player move', function (msg) {
io.sockets.emit ('updatePlayer', msg);
});
回答by Tronix117
Server side
服务器端
socket.on('updatePlayer', function(updatePlayer){
console.log("Someone just moved on the map!")
updatePlayer() // will trigger the client side function
});
Client side
客户端
socket.emit('updatePlayer', function(){
console.log('testing');
})
