Is it possible to give multiple weapons the devil axe effect but with different percentages?

Shadowfire · January 19, 2022, 7:13pm

And how can I do it? (Without messing with the actual lines of code if possible)

Pandan · January 19, 2022, 9:45pm

Chances are if it isn’t a patch in builder or available as a toggle on the item table, you will probably need to code it yourself.

You can adjust the universal devil effect % and assign it to multiple item types, but I do not think there is a pre-made solution for multiple percentages to be stored and assigned.

You’ll need to make it if it is important to you.

From a design standpoint, unsure how this will meaningfully change player behavior. If there is some risk of a backfire, whether that’s 10% or 90%, I am going to assume that it is possible to mess up. Psychologically, I’d assume having a devil effect at all will achieve the effect you want, regardless of its probability.

JeyTheCount · January 19, 2022, 11:06pm

No. The devil effect is built in and is triggered by a special flag connected to the weapon (BTW that’s the reason why you cannot have a poisoned devil weapon).

You would need to completely overwrite some other procedure (like the previously mentioned poison) and make it a duplicate of the devil effect just with different values. But I don’t know much about changing the ROM code so I can’t help with that.

So the answer is No unless you want to put a really long time into making it.

Pikmin1211 · January 19, 2022, 11:34pm

I didn’t want to comment but now I feel obliged because the guy above is just plain incorrect. It would be extremely easy to make the devil effect percentage based on the weapon being used. You wouldn’t need another effect for it, and even you did, the effect uses an entire byte but only has like 6 entries, so even if you did need to do that it still wouldn’t be an issue.

Now I say this with the caveat that, yes, in order to change the game’s code, you need to change the game’s code, so if the thought of that terrifies you and makes you decide not to do it, well a) it shouldn’t and b) you’re out of luck.

Vesly · January 20, 2022, 3:41am

github.com

FireEmblemUniverse/SkillSystem_FE8/blob/master/EngineHacks/SkillSystem/Skills/ProcSkills/Devil/proc_devil.s#L108

    
      
          .short	0xF800
          cmp	r0,#0x04	@devil effect
          bne     End	@do nothing if not devil
          
          
@roll devil chance
          isDevil:
          mov	r0,r4
          ldr	r1,=#0x8019298	@luck getter
          mov	lr,r1
          .short	0xF800
          cmp	r0,#31	@check if luck is over cap, just in case
          bhi	End
          mov	r1,#31	@devil chance
          sub	r0,r1,r0	@devil chance - luck
          ldr	r1,=#0x8000CA0	@roll 1rn
          mov	lr,r1
          .short	0xF800
          lsl	r0,#0x18
          cmp	r0,#0
          beq	End	@if the roll fails we are safe

You could very easily add a few lines of code here to branch based on weapon id for different percentages. Ask in #advanced_help on discord if you want to learn how.

Shadowfire · January 20, 2022, 4:09am

Well, time to take some coding lessons.