Dis-le. Bloko en écrit le code.

export interface PlayerData {
  cash: number;
  level: number;
  rebirthCount: number; // défaut 0
}

import { Networking } from "@flamework/networking";

interface ClientToServer {
  rebirth(): void;
}

export const GlobalEvents =
  Networking.createEvent<ClientToServer, {}>();

@Service()
export class RebirthService implements OnStart {
  onStart() {
    Events.rebirth.connect((player) => this.rebirth(player));
  }

  private rebirth(player: Player) {
    const data = this.profiles.get(player);
    if (!data || data.level < 50) return; // le serveur décide
    data.rebirthCount += 1;
    data.level = 1;
  }
}

const BONUS_PAR_REBIRTH = 0.25;

export function incomeMultiplier(rebirthCount: number) {
  return 1 + rebirthCount * BONUS_PAR_REBIRTH;
}

export function RebirthButton({ level }: { level: number }) {
  return (
    <textbutton
      Text="Renaître"
      Visible={level >= 50}
      Event={{ Activated: () => Events.rebirth.fire() }}
    />
  );
}