public StaticAction(final int actionIncrease, final int buyIncrease, final int coinIncrease) {
        if (actionIncrease < 0 || buyIncrease < 0 || coinIncrease < 0) {
            throw new IllegalArgumentException("numbers in staticAction need to be non-negative");
        }
        this.actionIncrease = actionIncrease;
        this.buyIncrease = buyIncrease;
        this.coinIncrease = coinIncrease;
    }