SEHack/main.js at master · TheRealRay/SEHack · GitHub

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var objects = [];
var beam = new beam(20.0, 10.0);
var interval = 0.05;
var gravityConstant = 0.2;

$(document).ready(function(){

    var player = new Object(8.0, 0.5);

    player.yPos = 0.0;
    player.xPos = 0.0;

    objects.push(player);

    document.addEventListener('keydown', function(event) {
        if(event.keyCode == 37) {
             objects[0].arrowAcc = -1.0;
        }
        else if(event.keyCode == 39) {
             objects[0].arrowAcc = 1.0;
         }
         });

    var objectAddition = setInterval(function(){addNewObject()}, 100);

    var physicsEngine = setInterval(function(){physics()}, interval*1000);

});

function addNewObject()
{

    if(objectFall() === true)
        objects.push(createObject());

}

function objectFall()
{

    var fall = false;

    var randomNumber = Math.random() * 10;

    if(randomNumber > 9)
        fall = true;

    return fall;

}

function physics()
{

    updateAcceleration();
    updateVelocity();
    updatePosition();

    removeObjects();

    updateBeamVelandPos();

    draw(objects, beam);

}

function updateAcceleration()
{

    for(var i = 0; i < objects.length; i++)
    {

        var torque = 0.0;

        if(!onBeam(objects[i].xPos, objects[i].yPos))
        {
            objects[i].yAcc = -1.0*gravityConst;
            objects[i].xAcc = 0.0;
        }

        else
        {

            objects[i].xAcc = 0.0;
            objects[i].yAcc = 0.0;

            objects[i].xAcc += ((object[i].arrowAcc) * 15.0);

            objects[i].yAcc += (gravityConst*Math.sin(beam.angle)*Math.sin(beam.angle));
            objects[i].xAcc += (gravityConst*Math.sin(beam.angle)*Math.cos(beam.angle));

            objects[i].yAcc += -1.0*(gravityConst*Math.cos(beam.angle)*abs(Math.sin(beam.angle))*object[i].cf*object[i].yVel/abs(object[i].yVel));
            objects[i].xAcc += -1.0*(gravityConst*Math.cos(beam.angle)*Math.cos(beam.angle)*object[i].cf*object[i].xVel/abs(object[i].xVel));

            objects[i].yAcc += (-1.0 * objects[i].yVel / interval);
            objects[i].xAcc += (-1.0 * objects[i].xVel / interval);

            torque += Math.sqrt(objects[i].xAcc*objects[i].xAcc + objects[i].yAcc*objects[i].yAcc)*objects[i].mass
                    *Math.sqrt(objects[i].yPos*objects[i].yPos + objects[i].xPos * objects[i].xPos)*objects[i].xPos/abs(objects[i].xPos); //last entry to check if negative

            torque += objects[i].mass * gravityConst * Math.cos(beam.angle) * Math.sqrt(objects[i].yPos*objects[i].yPos + objects[i].xPos * objects[i].xPos)
                    * objects[i].xPos/abs(objects[i].xPos);

        }

        beam.radAcc = torque / (beam.length*beam.length*beam.mass*(1.0/12.0));

}

function updateVelocity()
{

    for(var i = 0; i < objects.length; i++)
    {

        objects[i].xVel += objects[i].xAcc * interval;
        objects[i].yVel += objects[i].yAcc * interval;

    }

}

function updatePosition()
{

    for(var i = 0; i < objects.length; i++)
    {

        objects[i].xPos += objects[i].xVel * interval;
        objects[i].yPos += objects[i].yVel * interval;

    }

}

function removeObjects()
{

    for(var i = 0; i < objects.length; i++)
        if(objects[i].yPos < -10.0)
            {
                objects[i].splice(i, 1);
                if(i === 0)
                    gameLost();
                i--;
            }

}

function onBeam(xPos, yPos)
{

    if(abs(yPos/xPos + Math.tan(beam.angle) < 0.1) && Math.sqrt(yPos*yPos + xPos * xPos) <= beam.length)
        return true;
    else
        return false;

}

function updateBeamVelAndPos()
{

    beam.radVel += beam.radAcc * interval;
    beam.angle += beam.radAcc * interval;

}

function gameLost()
{

    clearInterval(objectAddition);
    clearInterval(physicsEngine);

    alert("Game over. Your skill is not enough.");

}