Jump to content
Search In
  • More options...
Find results that contain...
Find results in...
Sign in to follow this  
40oz

[vanilla] All linedefs with alternate uses

Recommended Posts

Linedef types usually primarily do the one thing they are described to do. However, bugs in Doom's engine allow for nifty tricks such as transferring sector effects and instantly raising/lowering ceilings/floors.

Does anyone have a reference that describes exactly what else each linedef can do besides what it is used for in the Doom IWADs?

i.e. Linedef type 9 Floor Raise Donut can be used to transfer the sector effect of the surrounding floor with the donut sector.

Share this post


Link to post

But including the use of dummy sectors too? For example with action 5 foor raise to lowest ceiling, and merging the desired sector with one near a sector with the celing height at the ground you can have an instant-lowering sector.

Share this post


Link to post

UDS section 4.3.2. Read it carefully, looking for loopholes such as the following:

* Actions that change sector types work on all sector types except lighting and time-delay doors, not just damage.
* In vanilla Doom (but not Boom), floors can be raised above the ceiling, and ceilings lowered below the floor. This can be useful for control sectors.
* Control sectors aren't just for moving floors. They're also surprisingly useful for doors. An adjacent ceiling exactly 4 units above the door's floor height will prevent it from opening, allowing doors to be locked or unlocked by ceiling actions. (But note that non-repeatable door actions will become permanently unusable if the door fails to open on the first attempt, so don't let that happen.)
* Tags 666 and 667 can be applied to control sectors to produce novel boss actions.

Share this post


Link to post

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
Sign in to follow this  
×