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[SOLVED] Cubic Minefield - hitting a wall!

I just keep running into the wall.

// Walk through the minefield

// This function returns the number multiplied by the times
function mult(number, times) {
    var total = 0;
    while (times > 0) {
        total += number;
        times--;
    }
    return total;
}

// This function returns the number to the exponent power.
function power(number, exponent) {
    var total = 1;
    // Complete the function.
    while(exponent > 0) {
        exponent ^= number;
        exponent--;
    }
    return total;
}

// Don't change the following code
// You can find coefficients for the equation on the tower
var tower = hero.findFriends()[0];
var a = tower.a;
var b = tower.b;
var c = tower.c;
var d = tower.d;
var x = hero.pos.x;

while (true) {
    // To find the path use a cubic equation
    var y = a * power(x, 3) + b * power(x, 2) + c * power(x, 1) + d * power(x, 0);
    hero.moveXY(x, y);
    x = x + 5;
}

Never mind. I figured it out!