tickwerk/src/systems/ds4.js

115 lines
3.4 KiB
JavaScript

// SPDX-FileCopyrightText: 2022 Johannes Loher
//
// SPDX-License-Identifier: MIT
import { packageId } from '../constants';
import { getGame } from '../helpers';
export const registerDS4SpecificFunctionality = () => {
if (CONFIG.tickwerk === undefined) CONFIG.tickwerk = {};
foundry.utils.mergeObject(CONFIG.tickwerk, { getTiebreaker, getInitiativeFormula, tickTime: 0.5 });
registerRollItemSetting();
Hooks.on('ds4.rollItem', onRollItem);
};
/** @type {import("../data/documents/combatant").GetTiebreaker} */
const getTiebreaker = async (combatant, combatants, waiting) => {
if (combatants.length === 0) return 0;
/** @type {number[]} */
const lowerBounds = [];
/** @type {number[]} */
const upperBounds = [];
/** @type {number[]} */
const equals = [];
for (const other of combatants) {
const tiebreaker = other._newTiebreaker ?? other.getFlag(packageId, 'tiebreaker') ?? 0;
if (getInitiative(other) > getInitiative(combatant) || waiting === false) {
lowerBounds.push(tiebreaker);
} else if (getInitiative(other) < getInitiative(combatant)) {
upperBounds.push(tiebreaker);
} else {
equals.push(tiebreaker);
}
}
equals.sort();
const positionAmongEquals = Math.floor(twist.random() * (equals.length + 1));
equals.forEach((equal, index) => {
if (index < positionAmongEquals) {
lowerBounds.push(equal);
} else {
upperBounds.push(equal);
}
});
const lowerBound = Math.max(...lowerBounds);
const upperBound = Math.min(...upperBounds);
if (lowerBound === -Infinity) {
if (upperBound === Infinity) {
return 0;
} else {
return upperBound - 1;
}
} else {
if (upperBound === Infinity) {
return lowerBound + 1;
} else {
return (lowerBound + upperBound) / 2;
}
}
};
/**
* Get the initiative formula for a combatant.
* @param {TickwerkCombatant} combatant The combatant for which to get the initiative formula
* @returns {string} The initiative formula
*/
const getInitiativeFormula = (combatant) => {
const started = combatant.combat?.started ?? false;
if (!started) return '-@combatValues.initiative.total';
const tickValue = combatant.combat?.tickValue ?? 0;
return `max(${tickValue} + 10 - @combatValues.initiative.total, ${tickValue})`;
};
/**
* Get the initiative for a combatant.
* @param {TickwerkCombatant} combatant The combatant for which to get the initiative
* @returns {number}
*/
const getInitiative = (combatant) => {
return combatant.actor?.system.combatValues.initiative.total ?? -Infinity;
};
/**
* React to an item roll by prompting the user to advance ticks.
* @param {Item} item The item that has been rolled
*/
const onRollItem = (item) => {
const game = getGame();
if (game.settings.get(packageId, 'ds4.reactToRollItemHook')) {
if (['weapon', 'spell'].includes(item.type) && item.actor?.id) {
const combatants = item.actor
.getActiveTokens(false, true)
.map((token) => game.combat?.getCombatantByToken(token.id ?? ''));
for (const combatant of combatants) {
if (combatant?.parent?.started) combatant?.advanceTicksDialog();
}
}
}
};
const registerRollItemSetting = () => {
getGame().settings.register(packageId, 'ds4.reactToRollItemHook', {
name: 'TICKWERK.SettingDS4ReactToRollItemHookName',
hint: 'TICKWERK.SettingDS4ReactToRollItemHookHint',
scope: 'client',
config: true,
type: Boolean,
default: true,
});
};