Using Legacy features in Heretic maps

From DoomWiki.org

This is a collection of miscellaneous facts about the advanced Doom Legacy features and which ones work with Heretic, and which combinations do not work.

  • All legacy special linedefs work in Heretic mode too, and will be applied as long as they do not directly conflict with a Heretic sector or action that is specified by another method. In most cases such conflict will result in a sector attribute of one being overwritten by the other.
  • 3D floors are allowed.
  • Legacy water (Linetypes 301, 304) sectors work. However, applying such to a sector with Heretic water, is a sector model type collision (water renders properly but is not swimmable).
  • Wind attributes (Sector Types 40-51) do not transfer from the Legacy Control sector (such as for Legacy water and 3D floor) to the target sectors. Heretic wind must be applied directly to the target sectors.
  • Heretic special sectors are applied to the player, and special sectors from other modes are not.
  • Using Fast Strobe Death Slime will become Heretic Scroll East Lava Damage, due to WAD id conflict.
  • Heretic doomednum conflict with Doom doomednum. However Legacy objects NODE, CAMERA, MBF DOGS, PUSH, PULL, are outside that range and should work.
  • Heretic maps are allowed to use fully capable SWITCHES lump (since 1.46).
  • Heretic DeHackEd supported.
  • Respawn and deathmatch.
  • Almost all menu game options apply in Heretic WADs too.
  • Dogs will not be friendly as that is MBF behavior, and will be invisible unless a dog sprite WAD is specified.
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