Get most of the custom Initiative sorting stuff through the door

module/documents/combatant.mjs

@@ -0,0 +1,37 @@
+import { distanceBetweenFates } from "../utils/distanceBetweenFates.mjs";
+
+export class RipCryptCombatant extends Combatant {
+
+	async _preCreate(data, options, user) {
+		const allowed = await super._preCreate(data, options, user);
+		if (allowed === false) { return false };
+
+		const start = game.settings.get(`ripcrypt`, `currentFate`);
+		const end = this.actor?.system?.fate || this.baseActor?.system?.fate;
+		const fateDistance = distanceBetweenFates(start, end);
+
+		this.updateSource({
+			initiative: fateDistance,
+		});
+	};
+
+	get groupKey() {
+		const path = this.token?.actor?.system?.fate;
+
+		// Disallow grouping things that don't have a fate path
+		if (!path) { return null };
+
+		// Token Disposition (group into: friendlies, unknown, hostiles)
+		let disposition = `unknown`;
+		switch (this.token.disposition) {
+			case CONST.TOKEN_DISPOSITIONS.HOSTILE:
+				disposition = `hostile`;
+				break;
+			case CONST.TOKEN_DISPOSITIONS.FRIENDLY:
+				disposition = `friendly`;
+				break;
+		};
+
+		return `${path}:${disposition}`;
+	};
+};