Door linedef types

A door is a sector, usually placed between two rooms, whose ceiling raises to open, and lowers to close.

A door is fully closed when its ceiling height is equal to its floor height.

A door is fully open when its ceiling height is 4 less than the lowest neighbor ceiling adjacent to it.

A door may be set to an intermediate state initially, or through the action of a linedef trigger that affects ceilings or floors. The door is passable to a player when its ceiling is at least 56 units higher than its floor. In general the door is passable to a monster or a thing when its ceiling is at least the monster or thing's height above the floor.

If a door has a ceiling height above the fully open height, then an open door action moves the ceiling to the fully open height instantly.

If a door has a ceiling height below the fully closed height (that is the ceiling of the door sector is lower than the floor of the door sector) a close door action moves the ceiling to the fully closed height instantly.

Back to Linedef types

Door functions

• Open, Wait, Then Close

On activation, door opens fully, waits a specified period, then closes fully. This door type is also known as a "Raise" door. The parameterized special is Door_Raise.

• Open and Stay Open

On activation, door opens fully and remains there. The parameterized special is Door_Open.

• Close and Stay Closed

On activation, door closes fully, and remains there. The parameterized special Door_Close.

• Close, Wait, Then Open

On activation, door closes fully, waits a specified period, then opens fully. The parameterized special Door_CloseWaitOpen.

• Wait, Open, Wait, Close

Available as a parameterized line special only (Door_WaitRaise), this door type waits for a specified countdown period, and then functions as a normal "Raise" door.

• Wait, Close and Stay Closed

Available as a parameterized line special only (Door_WaitClose), this door type waits for a specified countdown period, and then closes fully and remains closed.

Varieties of doors

A door can be triggered by pushing on it, walking over or pressing a linedef trigger tagged to it, or shooting a linedef tagged to it. These are called manual, walkover, switched, or gun doors respectively.

Since a push door (D1/DR) has no use for its tag, BOOM has extended the functionality to include changing any tagged sectors to maximum neighbor lighting on fully opening, then to minimum neighbor lighting on fully closing. This is true for regular, extended, and generalized doors with push triggers. Parameterized push doors use a separate argument to control dynamic door lighting.

A door trigger can be locked. This means that the door function will only operate if the player is in possession of the right key(s). Regular and extended door triggers only care if the player has a key of the right color, they do not care which. Generalized door triggers can distinguish between skull and card keys, and can also require any key, or all keys in order to activate.

A door can have different speeds, slow, normal, fast or turbo. Parameterized doors can open at any speed.

A door can wait for different amounts of time.

A door may or may not be activateable by monsters.

Any door function except Close and Stay Closed, when closing and encountering a monster or player's head will bounce harmlessly off that head and return to fully open. A Close and Stay Closed will rest on the head until it leaves the door sector.

Door linedef types

Table information

• Class: "reg" and "ext". The "registered" types are from vanilla DOOM, while the "extended" types were added since BOOM.

Regular and extended door types

#	Class	Trig	Lock	Speed	Wait	Monst	Function	Parameterized equivalent
1	Reg	DR	No	Slow	4s	Yes	Open, Wait, Then Close	Door_Raise(0, 16, 150, tag)
117	Reg	DR	No	Fast	4s	No	Open, Wait, Then Close	Door_Raise(0, 64, 150, tag)
63	Reg	SR	No	Slow	4s	No	Open, Wait, Then Close	Door_Raise(tag, 16, 150, 0)
114	Reg	SR	No	Fast	4s	No	Open, Wait, Then Close	Door_Raise(tag, 64, 150, 0)
29	Reg	S1	No	Slow	4s	No	Open, Wait, Then Close	Door_Raise(tag, 16, 150, 0)
111	Reg	S1	No	Fast	4s	No	Open, Wait, Then Close	Door_Raise(tag, 64, 150, 0)
90	Reg	WR	No	Slow	4s	No	Open, Wait, Then Close	Door_Raise(tag, 16, 150, 0)
105	Reg	WR	No	Fast	4s	No	Open, Wait, Then Close	Door_Raise(tag, 64, 150, 0)
4	Reg	W1	No	Slow	4s	Yes	Open, Wait, Then Close	Door_Raise(tag, 16, 150, 0)
108	Reg	W1	No	Fast	4s	No	Open, Wait, Then Close	Door_Raise(tag, 64, 150, 0)
31	Reg	D1	No	Slow	--	No	Open and Stay Open	Door_Open(0, 16, tag)
118	Reg	D1	No	Fast	--	No	Open and Stay Open	Door_Open(0, 64, tag)
61	Reg	SR	No	Slow	--	No	Open and Stay Open	Door_Open(tag, 16, 0)
115	Reg	SR	No	Fast	--	No	Open and Stay Open	Door_Open(tag, 64, 0)
103	Reg	S1	No	Slow	--	No	Open and Stay Open	Door_Open(tag, 16, 0)
112	Reg	S1	No	Fast	--	No	Open and Stay Open	Door_Open(tag, 64, 0)
86	Reg	WR	No	Slow	--	No	Open and Stay Open	Door_Open(tag, 16, 0)
106	Reg	WR	No	Fast	--	No	Open and Stay Open	Door_Open(tag, 64, 0)
2	Reg	W1	No	Slow	--	No	Open and Stay Open	Door_Open(tag, 16, 0)
109	Reg	W1	No	Fast	--	No	Open and Stay Open	Door_Open(tag, 64, 0)
46	Reg	GR	No	Slow	--	Yes	Open and Stay Open	Door_Open(tag, 16, 0)
42	Reg	SR	No	Slow	--	No	Close and Stay Closed	Door_Close(tag, 16, 0)
116	Reg	SR	No	Fast	--	No	Close and Stay Closed	Door_Close(tag, 64, 0)
50	Reg	S1	No	Slow	--	No	Close and Stay Closed	Door_Close(tag, 16, 0)
113	Reg	S1	No	Fast	--	No	Close and Stay Closed	Door_Close(tag, 64, 0)
75	Reg	WR	No	Slow	--	No	Close and Stay Closed	Door_Close(tag, 16, 0)
107	Reg	WR	No	Fast	--	No	Close and Stay Closed	Door_Close(tag, 64, 0)
3	Reg	W1	No	Slow	--	No	Close and Stay Closed	Door_Close(tag, 16, 0)
110	Reg	W1	No	Fast	--	No	Close and Stay Closed	Door_Close(tag, 64, 0)
196	Ext	SR	No	Slow	30s	No	Close, Wait, Then Open	Door_CloseWaitOpen(tag, 16, 240, 0)
175	Ext	S1	No	Slow	30s	No	Close, Wait, Then Open	Door_CloseWaitOpen(tag, 16, 240, 0)
76	Reg	WR	No	Slow	30s	No	Close, Wait, Then Open	Door_CloseWaitOpen(tag, 16, 240, 0)
16	Reg	W1	No	Slow	30s	No	Close, Wait, Then Open	Door_CloseWaitOpen(tag, 16, 240, 0)

Regular and Extended Locked Door Types

#	Class	Trig	Lock	Speed	Wait	Monst	Function
26	Reg	DR	Blue	Slow	4s	No	Open, Wait, Then Close
28	Reg	DR	Red	Slow	4s	No	Open, Wait, Then Close
27	Reg	DR	Yell	Slow	4s	No	Open, Wait, Then Close
32	Reg	D1	Blue	Slow	--	No	Open and Stay Open
33	Reg	D1	Red	Slow	--	No	Open and Stay Open
34	Reg	D1	Yell	Slow	--	No	Open and Stay Open
99	Reg	SR	Blue	Fast	--	No	Open and Stay Open
134	Reg	SR	Red	Fast	--	No	Open and Stay Open
136	Reg	SR	Yell	Fast	--	No	Open and Stay Open
133	Reg	S1	Blue	Fast	--	No	Open and Stay Open
135	Reg	S1	Red	Fast	--	No	Open and Stay Open
137	Reg	S1	Yell	Fast	--	No	Open and Stay Open

There are two generalized door linedef types, Generalized Door, and Generalized Locked Door. The following tables show the possibilities for each parameter, any combination of parameters is allowed:

Slow and Fast represent the same speeds as slow and fast regular doors. Normal is twice as fast as slow, Fast is twice normal, Turbo is twice Fast.

Generalized Door Types

#	Class	Trig	Lock	Speed	Wait	Monst	Function
3C00H-4000H	Gen	D1/DR	No	Slow	1s	Yes	Open, Wait, Then Close
		S1/SR		Normal	4s	No	Open and Stay Open
		W1/WR		Fast	9s		Close and Stay Closed
		G1/GR		Turbo	30s		Close, Wait, Then Open

Generalized Locked Door Types

#	Class	Trig	Lock	Speed	Wait	Monst	Function
3800H-3C00H	Gen	D1/DR	Any	Slow	1s	No	Open, Wait, Then Close
		S1/SR	Blue	Normal	4s		Open and Stay Open
		W1/WR	Red	Fast	9s		Close and Stay Closed
		G1/GR	Yell	Turbo	30s		Close, Wait, Then Open
			BlueC
			RedC
			YellC
			BlueS
			RedS
			YellS
			All3
			All6

There are several types of parameterized door specials, each performing a different type of door action. See the Parameterized Door Types section for full information on how to use these specials.