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Is my damage formula not working?

BMM_Archive · July 15, 2026

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Preserved forum archive. This topic stores the original first post and locally mirrored RPG Maker Web attachments when available. It is posted by the BMMPlay archive account, not by the original creator.

Original Source

  • Original title: Is my damage formula not working?
  • Original author: OrphieBaby
  • Original date: April 3, 2016
  • Source thread: https://forums.rpgmakerweb.com/threads/is-my-damage-formula-not-working.59861/
  • Source forum path: Game Development Engines > Legacy Engine Support > RPG Maker VXAce Support

Summary

Hiya. I'm creating a simple community engine so that people can create Pokémon JRPGs in which you play as Pokémon instead of trainers. I've gotten most of the skills down, but for some reason I don't seem to do damage to enemies in testing. Here is the damage formula according to Bulbapedia: Spoiler {

Archived First Post

Hiya. I'm creating a simple community engine so that people can create Pokémon JRPGs in which you play as Pokémon instead of trainers. I've gotten most of the skills down, but for some reason I don't seem to do damage to enemies in testing.


Here is the damage formula according to Bulbapedia:

Protected download



So, for example here is what I have for the move "Tacke":

Protected download



The damage formula for "Tackle" is:


(((2 * level + 10)/250) * (a.atk/b.def) * 50 + 2) * a.element_rate(20) * (93/100)


"Level" is level 30. User's attack is 43. Enemy's defense was modified to be 1 (and I still can't do damage). The "50" is the move's base power. "a.element_rate(20)" is for the element "Normal STAB", which is 150% for the class the user is. This accounts for STAB (same-type attack bonus), meaning damage should be 150% of normal if applicable (but not for "Tackle" here). The last part is coupled with the move's Variance of 7% to account for "random ∈ [0.86, 1]", which is close enough to the official thing.


My user's class HIT is + 100%, too. And I thought we didn't have to list EVA for anyone.


The result is, every time I use any move, it always says "Enemy X took no damage!" What am I doing wrong?

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