Foundry 5e Selection Initiative Macro.js

//My solution for 5e current foundry vtt, modified by me from source https://gist.github.com/xdy/bdd08e101fc390016dd432f28c4abfdb

// 1. Filter for valid 5e tokens
const tokens = canvas.tokens.controlled.filter(t => 
    t.actor && (t.actor.type === 'character' || t.actor.type === 'npc')
);

if (tokens.length === 0) {
    return ui.notifications.warn("Please select at least one Character or NPC token.");
}

// 2. Ensure Combat exists
let combat = game.combat;
if (!combat) {
    combat = await Combat.create({scene: canvas.scene.id, active: true});
}

// 3. Add tokens correctly via toggleCombat to satisfy modules like Monk's
for (let t of tokens) {
    if (!t.inCombat) {
        await t.toggleCombat(); 
    }
}

// 4. Identify combatants that need an initiative roll
// We filter combatants linked to our selected tokens
const combatantIdsToRoll = combat.combatants
    .filter(c => tokens.some(t => t.id === c.tokenId) && c.initiative === null)
    .map(c => c.id);

// 5. Roll initiative for those specific IDs
if (combatantIdsToRoll.length > 0) {
    await combat.rollInitiative(combatantIdsToRoll, { skipDialog: true });
} else {
    ui.notifications.info("All selected tokens are in combat and have initiative.");
}