Hitscan Weapons

[Magnum Express]

I was wondering how to modify the damage done by hitscan weapons. Is it through a DECORATE lump?

[wildweasel]

Yes; specifically, it's one of the arguments for the A_FireBullets function - more information can be found on the ZDoom Wiki.

[skib]

Find What A_FireShotgun is and delete 2 lines down from it, itself included and add A_FireShotgun code (from ZD wiki) and change what you want, if it doesn't work, let me know!
This is what the code should look like:

actor Shotgun : DoomWeapon 2001
{
Game Doom
SpawnID 27
Weapon.SelectionOrder 1300
Weapon.AmmoUse 1
Weapon.AmmoGive 50
Weapon.AmmoType "Clip"
Inventory.PickupMessage "$You got the shotgun!"
Obituary "$%o chewed on %k's BoomStick!"
States
{
Ready:
SHTG A 1 A_WeaponReady
Loop
Deselect:
SHTG A 1 A_Lower
Loop
Select:
SHTG A 1 A_Raise
Loop
Fire:
SHTG A 3
SHTG A 0 A_FireBullets (5.6, 0, 7, 5, "BulletPuff")
SHTG A 0 A_PlaySound ("weapons/shotgf", CHAN_WEAPON)
SHTG A 7 A_GunFlash
SHTG CB 5
SHTG A 3
SHTG A 7 A_ReFire
Goto Ready
Flash:
SHTF A 4 Bright A_Light1
SHTF B 3 Bright A_Light2
Goto LightDone
Spawn:
SHOT A -1
Stop
}
}