class LevelCompatibility play
{
	private static void Apply(Name checksum)
	{
		switch (checksum)
		{
			case 'AB24AE6E2CB13CBDD04600A4D37F9189':   // doom2.wad map02
			case '1EC0AF1E3985650F0C9000319C599D0C':  // doom2bfg.wad map02
			{
				// Missing textures
				TextureID stone4 = TexMan.CheckForTexture("STONE4", TexMan.Type_Wall);
				SetWallTextureID(327, Line.front, Side.bottom, stone4);
				SetWallTextureID(328, Line.front, Side.bottom, stone4);
				SetWallTextureID(338, Line.front, Side.bottom, stone4);
				SetWallTextureID(339, Line.front, Side.bottom, stone4);
				break;
			}
			
			case '66C46385EB1A23D60839D1532522076B':  // doom2.wad map08
			{
				// Missing texture
				SetWallTexture(101, Line.back, Side.top, "BRICK7");
				break;
			}
		}
	}

	private static void SetWallTexture(int line, int side, int texpart, String texture)
	{
		SetWallTextureID(line, side, texpart, TexMan.CheckForTexture(texture, TexMan.Type_Wall));
	}

	private static void SetWallTextureID(int line, int side, int texpart, TextureID texture)
	{
		level.Lines[line].sidedef[side].SetTexture(texpart, texture);
	}
}