How to code weapon combos in GZDOOM?

[TheNoob_Gamer]

I just watched this video and I realized that weapon combos are possible in (G)ZDOOM. How do I make one?
 

[-TDRR-]

What exactly do you mean by weapon combos?

[-TDRR-]

Well, like in Mortal Kombat, only PillowBlaster and Doomero know how.

 

But like in Brutal Doom (the fists i mean) it's quite easy. There's a fairly clean example in a mod of mine, DUBG. So do check that out if you want something like it, it's in the FIST.txt file.

[TheNoob_Gamer]

@-TDRR- Weapons combos here are basically like Mortal Kombat's combos: You smashes a lot of buttons in a short/same time to let your character blasts a heavy/cool attack.