import flash.geom.Point;

addEventListener(Event.ENTER_FRAME, update)
addEventListener(MouseEvent.MOUSE_DOWN, down)
addEventListener(MouseEvent.MOUSE_UP, up)

var drive: Number = 0;

function down(_) {
    if (drive > .05 && cooldown <= 0) {
        overdrive = true;
        left_off = bar.scaleY;
    }
}

function up(_) {
    overdrive = false;
    if (cooldown <= 0) {
        cooldown = 1;
    }
}

var energies: Array = [];

var spawn_t: Number = 0;

var overdrive: Boolean = false;
var cooldown: Number = 0;

var left_off: Number = 0;

function update(_) {
    spawn_t++;
    heli.x = mouseX;
    heli.y = mouseY;
    heli.rot.rotation += 10;
    heli.rot.gotoAndStop(overdrive ? 2 : 1);
    heli.rot.scaleX += ((overdrive ? 1.2 : 1) - heli.rot.scaleX) * .2;
    heli.rot.scaleY = heli.rot.scaleX;

    if (overdrive) {
        if (drive < 0) {
            overdrive = false;
            cooldown = 1;
        } else {
            drive -= .01;
        }
    } else {
        if (cooldown > 0) {
            cooldown -= .07;
        } else {
            if (drive < 1) {
                drive += .005;
            }
        }

        bar_used.scaleY = left_off + (bar.scaleY - left_off) * (1 - cooldown);
    }

    bar.scaleY = drive;

    if (overdrive || (cooldown < 0 && drive < 1 && spawn_t % 4 == 0)) {
        var energy: Energy = new Energy();
        addChild(energy);
        energy.speed = 0;
        energy.vel = new Point();
        energy.rotation = Math.random() * 360;
        energies.push(energy);

        var move: Point = new Point(Math.random() * 100 - 50, Math.random() * 100 - 50);
        if (overdrive) {
            move.normalize(10);
            energy.vel.x = move.x;
            energy.vel.y = move.y;
            move.normalize(41);
            energy.nextFrame();
        } else {
            move.normalize(100);
            energy.alpha = 0;
        }
        energy.x = heli.x + move.x;
        energy.y = heli.y + move.y;
        energy.is_overdrive = overdrive;
    }

    for (var i: int = 0; i < energies.length; i++) {
        energy = energies[i];
        var vel: Point = energy.vel;
        if (energy.is_overdrive) {
            energy.alpha -= .05;
            vel.x *= .9;
            vel.y *= .9;
        } else {
            energy.alpha += .1;
            if (energy.speed < 30)
                energy.speed += 1;
            vel.x = heli.x - energy.x;
            vel.y = heli.y - energy.y;
            if (vel.length < 40) {
                energies.splice(i, 1);
                i--;
                removeChild(energy);
                continue;
            }

            vel.normalize(energy.speed);
        }

        if (energy.is_overdrive) {
            energy.x -= energy.vel.x * 2;
            energy.y -= energy.vel.y * 2;
            if (energy.alpha < 0) {
                energies.splice(i, 1);
                i--;
                removeChild(energy);
                continue;
            }
        } else {
            energy.x += energy.vel.x;
            energy.y += energy.vel.y;

        }
    }
}