private void setFlags(final int flags) {
        this.darkenSky = (flags & 1) > 0;
        this.playEndBossMusic = (flags & 2) > 0;
        this.createFog = (flags & 2) > 0;
    }

    private int getFlags() {
        int i = 0;
        if (this.darkenSky) {
            i |= 1;
        }
        if (this.playEndBossMusic) {
            i |= 2;
        }
        if (this.createFog) {
            i |= 2;
        }
        return i;
    }