void boat_update(boat_t& b, float t, float dt, int numWaves)
{
    float wave = 0.0f;
    float dydx;
    float dydz;

    for(int n = 0; n < numWaves; n++)
    {
        wave += m_calculateSine(a[n], kx[n], kz[n], w[n], b.position.x, b.position.z, t);
        dydx += m_calcDYDX(a[n], kx[n], kz[n], w[n], b.position.x, b.position.z, t);
        dydz += m_calcDYDZ(a[n], kx[n], kz[n], w[n], b.position.x, b.position.z, t);
    }

    float theta = ARTAN(b.position.z/b.position.x);

    b.heading = theta;

    b.dydx = dydx;
    b.dydz = dydz;

    b.xRot = COS(dydx) * dt;
    b.zRot = COS(dydz) * dt;

    b.position.y = wave + 0.1f;

    float distance = v_Magnitude(b.position);

    b.delayTime -= 0.22f;

    if(distance <= 4.0f)
    {
        b.heading = ANG_2_DEGREES(theta);
        if(b.delayTime <= 0.0f)
        {
            boat_shoot(b);
            b.delayTime = BOAT_FIRE_DELAY;
        }
        return ;
    }

    // This acts _kinda_ strange, but it's actually kinda fun
    // The boats slow down as they come in, which presents a pretty fun
    // challenge. It's not like this is a really big hack or anything!
    // (yes James, I'm looking at you :] )
    b.velocity.z = -b.position.x * TAN(theta) * dt * 0.2f;
    b.velocity.x = -b.position.z / TAN(theta) * dt * 0.2f;

    b.position.x += b.velocity.x * 0.4f;
    b.position.z += b.velocity.z * 0.4f;
    b.position.i += b.velocity.x * 0.4f;
    b.position.k += b.velocity.z * 0.4f;
}

void boat_shoot(boat_t& b)
{
    float vz;
    float vx;

    /**
     *  Don't ask how this works.. Seriously...
     *  tan(90) == tan(270) which is UNDEFINED!
     *  Seriously, it's a division by zero... How this works is beyond me...
     */
    if(b.position.x < 0.0f)
    {
        vx = b.position.x / TAN(270.0f) * 0.1f;
    }
    else
    {
        vx = b.position.x / TAN(90.0f) * 1.1f;
    }

    if(b.position.z < 0.0f)
    {
        vz = b.position.z / TAN(270.0f) * 0.1f;
    }
    else
    {
        vz = b.position.z / TAN(90.0f) * 1.1f;
    }

    projectile_create(b.position.x, b.position.y + 0.2f, b.position.z, 35.0f, vx, vz, 4.5f);
}