Damage Formulas 101

Skunk · 2017-07-28T16:33:52+0900

Please note: A discussion has already been started about different things you can do with these formulas so please direct those comments and question to the appropriate thread. https://forums.rpgmakerweb.com/index.php?threads/rmmv-damage-formula-ideas-and-help.47099/ A link to the list of script equivalents of event commands https://forums.rpgmakerweb.com/index.php?threads/rpg-maker-mv-script-call-list.46456/ Damage Formulas 101 MV Edition You probably wondered how to make a skill do more damage against enemies with a state, or heal more if player has a state, or deal exactly half of enemy's HP. And so on. All of that and more can be done through custom damage formula. Basics: Type - sets what does the formula damage or heal. None - Nothing, no damage will be dealt. HP Damage - HP will be damaged MP Damage - MP will be damaged HP Recover - HP will be restored MP Recover - MP will be restored HP Drain - Deals damage to enemy HP and restores that much HP for attacker MP Drain - Deals damage to enemy MP and restores that much MP for attacker Element - Sets which element to use. Normal attack - means will use same element as weapon. Variance - How will damage fluctuate. E.g. If skill formula says it deals 100 damage and variance is 20%, the skill will deal between 80 and 120 damage. Critical - Can skill critically hit, dealing increased damage by 300%. And now, the actual fun part - formulas! It decides how much damage will opponent take or ally will heal. Let's dissect one of basic formulas that come with RPG Maker MV - Fire 100 + a.mat * 2 - b.mdf * 2 What do things like a and b mean? a - attacker b - defender So if Actor Glasses were to cast Fire on a Slime. a would be Glasses and b would be Slime. Meaning the takes double of Glasses mat (Magic Attack) parameter and subtracts double of Slime's mdf (Magic Defense) parameter and adds that to the 100 in the beginning ofthe formula. E.g. Glasses has 100 mat and Slime has 20 mdf. If we were to convert fomula using those numbers, we'd have - 100 + 100*2 - 20*2, after calculation we see with those parameters Fire would deal 260 damage if there were no variance. But only last number in the formula deals damage. If you had 2 lines of formula. (semicolon ; tells where line ends for the program) E.g. a.atk; a.atk*2 Only a.atk*2 would be calculated for damage. Are there more letters other than a and b for the formulas? Yes. There are variables. Which are used like this: v[ID]. ID - index of the variable. So you could have a skill that gets stronger the higher variable is. E.g. v[10] * 2 - b.def * 3 Is there a way to make skill even more complex, e.g. if some variable is over 100, deal extra damage? Yes, in that case we can use if else statements. How if else statement looks: Code: Code (Text): if (statement) { formula1; } else { formula2; } But how to write it to the damage formula? It only has 1 line! Just write everything together~ Code (Text): if (statement) { formula1; } else { formula2; } E.g.: Code (Text): if (v[10] > 100) { a.atk*4 - b.def*2 } else { a.atk*2 - b.def*2 } Which can be shortened to this if you're using only 1 line of formula. Code (Text): if (statement) formula1; else formula2; E.g.: Code (Text): if (v[10] > 100) a.atk*4 - b.def*2; else a.atk*2 - b.def*2; And you can shorten it even further using ternary operator (my favorite one): statement ? formula1 : formula2; E.g.: Code (Text): v[10] > 100 ? a.atk*4 - b.def*2 : a.atk*2 - b.def*2; Symbols for statements: > - more than = more than or equal to 100 ? 1000 : 100; (If variable 10 is more than 100, it'll deal 1000 damage, else it'll only deal 100) v[10] == 100 ? 1000 : 100; (If variable is 100 or more, it'll deal 1000 damage, else it'll only deal 100) v[10] 50 && v[11] >== 25 ? 1000 : 100; (If variable 10 is more than 50 and variable 11 is 25 or more, it'll deal 1000 damage, else it'll only deal 100) v[10] > 50 || v[11] > 50 ? 1000 : 100; (If variable 10 is more than 50 or variable 11 is more than 50 then it'll deal 1000 damage, it'll only deal 100) v[10] !== 100 ? 1000 : 100; (If variable 10 is not equal to 100, it'll deal 1000 damage else it'll only deal 100) What about parameters to use for a and b? Here's a whole list of them: Current: (All flat numbers, e.g.: 900, 999, 11) level - current level (Actor only by default) hp - current hp mp - current mp tp - current tp Params: (All flat numbers, e.g.: 1337, 7331, 156) mhp - max hp mmp - max MP atk - attack def - defence mat - magic attack mdf - magic defence agi - agility luk - luck XParams: (All decimal numbers symbolizing pe…

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Started by Skunk Jul 28, 2017, 07:33 AM 281 posts Page 15 of 15 View original ↗

Jaykov

#281 Mar 1, 2024, 03:49 PM Source

ATT_Turan said:
Sorry, what are you talking about?

There is no V in the damage formula, only v. And v[10] is game variable ID 10.

Oh. I see what it means now. I got confused about it.

Thanks for the clarification.