public void markBlocksDirtyVertical(int par1, int par2, int par3, int par4)
    {
        int var5;

        if (par3 > par4)
        {
            var5 = par4;
            par4 = par3;
            par3 = var5;
        }

        if (!this.worldProvider.hasNoSky)
        {
            for (var5 = par3; var5 <= par4; ++var5)
            {
                this.updateLightByType(EnumSkyBlock.Sky, par1, var5, par2);
            }
        }

        this.markBlocksDirty(par1, par3, par2, par1, par4, par2);
    }