void manual()
{
    float multiplier = 2;

    float x = 0;
    float y = 0;

    while (1)
    {
        KeyboardState keyboardstate = getKeyboardState();

        x += keyboardstate.right * multiplier;
        x -= keyboardstate.left * multiplier;
        y -= keyboardstate.up * multiplier;
        y += keyboardstate.down * multiplier;

        // Make sure the velocity values dont go outside [-100,100]
        y = min(max(y, -100), 100);
        x = min(max(x, -100), 100);

        if (keyboardstate.quit)
            break;

        // Convert the x and y components to tank controls.
        unsigned char left;
        unsigned char right;
        toTankControls(x, y, &left, &right);

        sendMotorStatus(left, right);

        // Sleep a bit, this ensures that we dont overflow the wixel or 3pi robot with data.
        Sleep(16);
    }
}