ds4/src/dice/slaying-dice-modifier.js

// SPDX-FileCopyrightText: 2021 Johannes Loher
// SPDX-FileCopyrightText: 2021 Oliver Rümpelein
//
// SPDX-License-Identifier: MIT

import { getGame } from "../utils/utils";
import { DS4Check } from "./check";

export function registerSlayingDiceModifier() {
    PoolTerm.MODIFIERS.x = slay;
}

/**
 * @this {PoolTerm}
 * @param {string} modifier
 */
function slay(modifier) {
    const rgx = /[xX]/;
    const match = modifier.match(rgx);
    if (!match || !this.rolls) return;

    let checked = 0;
    while (checked < (this.dice.length ?? 0)) {
        const diceTerm = this.dice[checked];
        checked++;
        if (diceTerm instanceof DS4Check && diceTerm.coup) {
            const formula = `dsv${diceTerm.checkTargetNumber}c${diceTerm.maximumCoupResult}:${diceTerm.minimumFumbleResult}n`;
            const additionalRoll = Roll.create(formula).evaluate({ async: false });

            this.rolls.push(additionalRoll);
            this.results.push({ result: additionalRoll.total ?? 0, active: true });
            this.terms.push(formula);
        }
        if (checked > 1000) throw new Error(getGame().i18n.localize("DS4.ErrorSlayingDiceRecursionLimitExceeded"));
    }
}