[英]TypeError: socket.emit is not a function
我正在嘗試編寫基本的在線游戲,只是為了檢查我當前的網絡編程水平。 這是我現在擁有的一些代碼:
var io = require('socket.io') (serv, {});
io.sockets.on('connection', function(socket) {
console.log('1 '+socket);
function fight (player,monster) {
console.log('2 '+socket);
monsterData = {};
monsterData.name = monster;
switch(monster){
case 'rat 1st level':
monsterData.hp = 50;
monsterData.attack = 1;
monsterData.money = Math.floor(Math.random()*3)+1;
break;
}
result = attack(player,monsterData);
console.log('3 '+socket);
if(result.winner === 'player'){
db.account.findOne({'username':player.username},function(err,player){
money = player.money + monsterData.money;
db.account.update({'username':player.username},{$set:{'money':money}});
socket.emit('addToChat',{type:'system',message:'You win battle against "'+monster+'"'})
});
}
}
console.log('4 '+socket);
socket.on('click',function(data){
db.account.find({'username':data.username,'socket':data.socket},function(err,res){
if(res.length > 0) {
position = 0;
//console.log('x - '+data.x+'; y- '+data.y);
/* RIGH BAR */
if(data.x>(1024-200) && data.x<1024 && data.y>80) {
// if(data.y>50&&data.y<80)
// position=1;
if(data.y>80&&data.y<110){
monster='rat 1st level';
}
if(data.y>110&&data.y<140){
monster='2ndMonster';
}
if(data.y>140&&data.y<170){
monster='3rdMonster';
}
if(data.y>170&&data.y<210){
monster='4thMonster';
}
db.account.findOne({'username':data.username},function(err,res){
db.account.update({'username':res.username},{$set:{'inFight':true,'monster':monster}});
io.sockets.emit('fightStart',{'username':res.username,'monster':monster});
result = fight(res,monster);
});
/* /RIGHTBAR */
}
//console.log(position);
}
});
});
socket.on('signIn',function(data){
isValidPassword(data,function(res){
if(res){
db.account.find({'username':data.username},function(err,player){
player = player[0];
socket.emit('signInResponse',{
success:true,
username:player.username,
password:player.password,
level:player.level,
money:player.money,
hp:player.hp,
maxhp:player.maxhp
});
});
} else {
socket.emit('signInResponse',{success:false,reason:'wrong login or password'});
}
});
});
}
所以,基本上,我可以在socket.on('signin')
獲取 socket 變量,但是當我嘗試在 function socket.on('click')
或socket.on('click')
獲取它時,它給了我未定義 socket 的錯誤,或者給我錯誤,因為 socket 只是客戶端的socket.id
,我不能用它發出數據。
一些如何在戰斗功能中訪問可變套接字以具有向特定玩家發送數據的能力。
你應該直接使用io:
io.on('connection', function(socket){
socket.on('xxx', function(obj){
io.emit('xxx', {xxx: xxx})
})
})
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