Sector_SetDamage
From ZDoom Wiki
214:Sector_SetDamage (tag, amount, mod)
tag: Tag of affected sector
amount: Amount of damage to applay
mod: Means-of-death identifier :-
0 = MOD_UNKNOWN
12 = MOD_WATER
13 = MOD_SLIME
14 = MOD_LAVA
15 = MOD_CRUSH
16 = MOD_TELEFRAG
17 = MOD_FALLING
18 = MOD_SUICIDE
19 = MOD_BARREL
20 = MOD_EXIT
21 = MOD_SPLASH
22 = MOD_HIT
Sets the amount of damage done to a player in a sector. This is in addition to whatever is specified by the sector's special. Damage amount below 20 will only hurt the player if he doesn't have an environment suit. Damages between 20-49 will occasionally hurt the player even with an environment suit on. Damages of 50 and above will always hurt the player unless he is in god mode.
There are some newer built-in damage types for which no MOD code exists and custom damage types are identified by names; neither can be used with this special. If you want to attach this special outside a script (e.g., to a line or a thing) but need to use a damage type that is recognized by the game by name, but is not listed above, set the line/thing special to run a script instead and use the SectorDamage ACS function in the script.

