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<!DOCTYPE html>
<html lang="en_US">
<meta charset="UTF-8">
<!-- Login -->
<div id="signDiv">
Username: <input id="signDiv-username" type="text"></input><br>
Password: <input id="signDiv-password" type="password"></input><br>
<button id="signDiv-signIn">Sign In</button>
<button id="signDiv-signUp">Sign Up</button>
</div>
<!-- Game -->
<div id="gameDiv" style="display:none;">
<canvas id="ctx" width="500" height="500" style="border:1px solid #000000;"></canvas>
<div id="chat-text" style="width:500px; height:100px; overflow-y:scroll;"> <!--https://www.sitepoint.com/community/t/auto-scrolling-a-div-with-overflow-scroll-auto/2291--></div>
<form id="chat-form">
<input id="chat-input" type="text" style="width:500px;"></input>
</form>
</div>
<!-- loading socket.io library -->
<script src="https://cdn.socket.io/4.1.3/socket.io.js"></script>
<script>
var socket = io();
// Login
var signDiv = document.getElementById("signDiv");
var signDivUsername = document.getElementById("signDiv-username");
var signDivUsername = document.getElementById("signDiv-username");
var signDivPassword = document.getElementById("signDiv-password");
var signDivSignIn = document.getElementById("signDiv-signIn");
var signDivSignUp = document.getElementById("signDiv-signUp");
signDivSignIn.onclick = function(){
socket.emit('signIn', {username:signDivUsername.value, password:signDivPassword.value})
}
signDivSignUp.onclick = function(){
socket.emit('signUp', {username:signDivUsername.value, password:signDivPassword.value})
}
socket.on('signInResponse', function(data){
if(data.success){
signDiv.style.display = 'none';
gameDiv.style.display = 'inline-block';
}
else
alert("Sign in unsuccessful.");
});
socket.on('signUpResponse', function(data){
if(data.success){
alert("Sign up successful.");
}
else
alert("Sign up unsuccessful.");
});
// Chat
var chatText = document.getElementById("chat-text");
var chatInput = document.getElementById("chat-input");
var chatForm = document.getElementById("chat-form");
socket.on('addToChat', function(data){
chatText.innerHTML += "<div>" + data + "</div>";
});
socket.on('evalAnswer', function(data){
console.log(data);
});
chatForm.onsubmit = function(e){
e.preventDefault();
if (chatInput.value[0] === "/")
socket.emit("evalServer", chatInput.value.slice(1));
else
socket.emit("sendMsgToServer", chatInput.value);
chatInput.value = "";
}
// Game
var ctx = document.getElementById("ctx").getContext("2d");
ctx.font = '30px Arial';
var Player = function(initPack){
var self = {};
self.id = initPack.id;
self.number = initPack.number;
self.x = initPack.x;
self.y = initPack.y;
Player.list[self.id] = self;
return self;
};
Player.list = {};
var Bullet = function(initPack){
var self = {};
self.id = initPack.id;
self.number = initPack.number;
self.x = initPack.x;
self.y = initPack.y;
Bullet.list[self.id] = self;
return self;
};
Bullet.list = {};
// init (all)
socket.on('init', function(data){
for(var i = 0; i < data.player.length; i++){
new Player(data.player[i]);
}
for(var i = 0; i < data.bullet.length; i++){
new Bullet(data.bullet[i]);
}
});
// update (diff)
socket.on('update', function(data){
for(var i = 0; i < data.player.length; i++){
var pack = data.player[i];
var p = Player.list[pack.id];
if(p){
if(pack.x !== undefined)
p.x = pack.x;
if(pack.y !== undefined)
p.y = pack.y;
}
}
for(var i = 0; i < data.bullet.length; i++){
var pack = data.bullet[i];
var b = Bullet.list[pack.id];
if(b){
if(pack.x !== undefined)
b.x = pack.x;
if(pack.y !== undefined)
b.y = pack.y;
}
}
});
// remove (del by id)
socket.on('remove', function(data){
for(var i = 0; i < data.player.length; i++){
delete Player.list[data.player[i]];
}
for(var i = 0; i < data.bullet.length; i++){
delete Bullet.list[data.bullet[i]];
}
});
setInterval(function(){
ctx.clearRect(0,0,500,500);
for(var i in Player.list){
ctx.fillStyle="rgba(55,55,55,0.8)";
ctx.fillText(''+ Player.list[i].number,Player.list[i].x, Player.list[i].y);
}
for(var i in Bullet.list){
ctx.fillStyle="rgba(55,55,55,0.8)";
ctx.fillRect(Bullet.list[i].x-5, Bullet.list[i].y-5, 10, 10);
}
}, 1000/25);
document.onkeydown = function(event){
//console.log(event.keyCode);
if(event.keyCode === 68 || event.keyCode === 39) // d
socket.emit('keyPress',{inputId: 'right', state: true});
else if(event.keyCode === 65 || event.keyCode === 37) // a
socket.emit('keyPress',{inputId: 'left', state: true});
else if(event.keyCode === 83 || event.keyCode === 40) // s
socket.emit('keyPress',{inputId: 'down', state: true});
else if(event.keyCode === 87 || event.keyCode === 38) // w
socket.emit('keyPress',{inputId: 'up', state: true});
}
document.onkeyup = function(event){
if(event.keyCode === 68 || event.keyCode === 39) // d
socket.emit('keyPress',{inputId: 'right', state: false});
else if(event.keyCode === 65 || event.keyCode === 37) // a
socket.emit('keyPress',{inputId: 'left', state: false});
else if(event.keyCode === 83 || event.keyCode === 40) // s
socket.emit('keyPress',{inputId: 'down', state: false});
else if(event.keyCode === 87 || event.keyCode === 38) // w
socket.emit('keyPress',{inputId: 'up', state: false});
}
document.onmousedown = function(event){
socket.emit('keyPress',{inputId: 'attack', state: true});
}
document.onmouseup = function(event){
socket.emit('keyPress',{inputId: 'attack', state: false});
}
document.onmousemove = function(event){
var x = -250 + event.clientX - 8;
var y = -250 + event.clientY - 8;
var angle = Math.atan2(y, x) / Math.PI * 180;
socket.emit('keyPress',{inputId: 'mouseAngle', state: angle});
}
</script>
</html>
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