c.js - Diep.io - Uncompressed

// This layer feeds input into the game
(function(){

var scale = window.localStorage['no_retina'] ? 1.0 : window.devicePixelRatio;
var canvas = document.getElementById('canvas');
var typing = false;

function preventDefault(e){
    if(e.preventDefault) e.preventDefault();
}

function onMouseWheel(e){
    e = e || window.event;

    preventDefault(e);

    if(!window['input']) return;
    window['input']['wheel'](e.wheelDelta / -120 || e.detail || 0);
}

function flushInputHooks(){
    if(window["input"] && window["input"]["flushInputHooks"]) window["input"]["flushInputHooks"]();
}

if(/firefox/i.test(navigator.userAgent)){
    document.addEventListener("DOMMouseScroll", onMouseWheel, false);
}else{
    document.body['onmousewheel'] = onMouseWheel;
}

canvas.onmousemove = function(e){
    e = e || window.event;

    if(!window['input']) return;
    window['input']['mouse'](e.clientX * scale, e.clientY * scale);
}

canvas.onmousedown = function(e) {
    flushInputHooks();

    e = e || window.event;

    if(!window['input']) return;

    preventDefault(e);

    if(!e.which && e.button !== undefined ) {
        e.which = (e.button & 1 ? 1 : (e.button & 2 ? 3 : (e.button & 4 ? 2 : 0)));
    }

    if(e.which >= 1 && e.which <= 3) window['input']['keyDown'](e.which);
}

canvas.onmouseup = function(e) {
    flushInputHooks();

    e = e || window.event;

    if(!window['input']) return;

    preventDefault(e);

    if(!e.which && e.button !== undefined ) {
        e.which = (e.button & 1 ? 1 : (e.button & 2 ? 3 : (e.button & 4 ? 2 : 0)));
    }

    if(e.which >= 1 && e.which <= 3) window['input']['keyUp'](e.which);
}

window.onkeydown = function(e){
    flushInputHooks();

    e = e || window.event;

    if(!window['input']) return;
    if(e.keyCode >= 112 && e.keyCode <= 130 && e.keyCode != 113) return; // F2- keys, don't prevent
    window['input']['keyDown'](e.keyCode);

    if(e.keyCode == 9) preventDefault(e);
    if(!typing && !e.ctrlKey && !e.metaKey) preventDefault(e);
}

window.onkeyup = function(e){
    flushInputHooks();

    e = e || window.event;

    if(!window['input']) return;
    if(e.keyCode >= 112 && e.keyCode <= 130 && e.keyCode != 113) return; // F2- keys, don't prevent
    window['input']['keyUp'](e.keyCode);

    if(e.keyCode == 9) preventDefault(e);
    if(!typing && !e.ctrlKey && !e.metaKey) preventDefault(e);
}

canvas.onclick = window.onclick = function(e){
    flushInputHooks();
}

canvas.ondragstart = function(e){
    e = e || window.event;

    preventDefault(e);
}

window.onblur = function(e){
    e = e || window.event;

    if(!window['input']) return;

    window['input'].blur();
}

canvas.oncontextmenu = function(e){
    e = e || window.event;

    if(!window['input'] || !window['input']['prevent_right_click'] || window['input']['prevent_right_click']()) preventDefault(e);
}

window['setLoadingStatus'] = function(str){
    document.getElementById('loading').innerText = str;
}

window['setTyping'] = function(v){ typing = v; }
window['unscale'] = function(v){ return v / scale; }

function onResize(){
    canvas.width = window.innerWidth * scale;
    canvas.height = window.innerHeight * scale;
}

window.onerror = function(message, source, lineno, colno, error){
    window.onerror = null;

    if(error) error = error.toString();

    // Don't log errors for outdated browsers
    if(typeof Uint8Array == 'undefined') return;
    if(typeof WebSocket == 'undefined') return;
    if(typeof CanvasRenderingContext2D == 'undefined') return;
    if(!document.createElement('canvas').getContext('2d')) return;

    // Or for sources we don't care about
    if(source != null && source.indexOf("//diep.io") == -1) return;
    if(source != null && source.indexOf(".js") == -1) return;

    if(source != null){
        setTimeout(function(){
            alert("The game crashed, refreshing page to recover from error");
            window.onbeforeunload = null;
            window.location.reload(true);
        }, 1000);
    }

    // Or weird errors in general
    if(error == null && lineno == 0 && colno == 0) return;
    if(error != null){
        if(error.indexOf("renoTransGloRef") != -1) return;
    }

    var e = JSON.stringify({
        message: message,
        source: source,
        lineno: lineno,
        colno: colno,
        error: error
    });
    console.log("Uncaught error: " + e);
    var xhr = new XMLHttpRequest();
    xhr.open("POST", "//lb.diep.io/v1/error", true);
    xhr.send(e);

}


window.onbeforeunload = function(){
    if(window["input"] && window["input"]["should_prevent_unload"] && window["input"]["should_prevent_unload"]()){
        return "Are you sure you wanna quit?";
    }
}

window.addEventListener("gamepadconnected", function(e){
    console.log("Gamepad connected: " + e.id);
});

window.onresize = onResize;

onResize();

})();