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MZ (VisuStella) Pass game variable instead of number in Skills and States Core?

BMM Archive · July 15, 2026

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Original Source

Original title: MZ (VisuStella) Pass game variable instead of number in Skills and States Core?
Original author: venajiro
Original date: May 5, 2024
Source thread: https://forums.rpgmakerweb.com/threads/visustella-pass-game-variable-instead-of-number-in-skills-and-states-core.168372/
Source forum path: Game Development Engines > RPG Maker Javascript Plugins > Javascript/Plugin Support

Summary

I'd like to be able to pass a game variable into the States and Skills Core notetags instead of a number value. (EG: instead of ). I had a look into the JS: Cost Calculation for the Skill Cost Types parameter and I can see that it's grabbing the value there, but I don't know enough JavaScript to be able to add an option there for it to read a game variable and pass it as a number value, or if I do manage to add it, if this value...

Archived First Post

I'd like to be able to pass a game variable into the States and Skills Core notetags instead of a number value. (EG: <Potion Cost: \V[x]> instead of <Potion Cost: x>). I had a look into the JS: Cost Calculation for the Skill Cost Types parameter and I can see that it's grabbing the value there, but I don't know enough JavaScript to be able to add an option there for it to read a game variable and pass it as a number value, or if I do manage to add it, if this value will update as the game variable is changed via events.
If anyone could suggest any JS changes I could make to the Cost Calculation, or to another area of the plugin parameters that I've overlooked, that would be very helpful. Thank you.

JS: Cost Calcuations in VisuStella: Skills and States Core (Created by the VisuStella team)

JavaScript:

// Declare Variables

const user = this;

const skill = arguments[0];

let cost = 0;



// Calculations

const note = skill.note;

if (note.match(/<POTION COST:[ ](\d+)>/i)) {

    cost += Number(RegExp.$1);

}

if (note.match(/<JS POTION COST>\s*([\s\S]*)\s*<\/JS POTION COST>/i)) {

    const code = String(RegExp.$1);

    eval(code);

}



// Apply Trait Cost Alterations

if (cost > 0) {

    const rateNote = /<POTION COST:[ ](\d+\.?\d*)([%％])>/i;

    const rates = user.traitObjects().map((obj) => (obj && obj.note.match(rateNote) ? Number(RegExp.$1) / 100 : 1));

    const flatNote = /<POTION COST:[ ]([\+\-]\d+)>/i;

    const flats = user.traitObjects().map((obj) => (obj && obj.note.match(flatNote) ? Number(RegExp.$1) : 0));

    cost = rates.reduce((r, rate) => r * rate, cost);

    cost = flats.reduce((r, flat) => r + flat, cost);

    cost = Math.max(1, cost);

}



// Set Cost Limits

if (note.match(/<POTION COST MAX:[ ](\d+)>/i)) {

    cost = Math.min(cost, Number(RegExp.$1));

}

if (note.match(/<POTION COST MIN:[ ](\d+)>/i)) {

    cost = Math.max(cost, Number(RegExp.$1));

}



// Return cost value

return Math.round(Math.max(0, cost));

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#039 #rpg-maker-archive #js-support

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