/**
 * RewardSystem.ts
 *
 * Reward distribution: XP, items, currency, unlock conditions,
 * reward multipliers, and loot integration.
 *
 * @module gameplay
 */
export type RewardType = 'xp' | 'item' | 'currency' | 'unlock' | 'reputation' | 'skill_point';
export interface RewardDef {
    id: string;
    type: RewardType;
    target: string;
    amount: number;
    condition?: string;
}
export interface RewardBundle {
    id: string;
    name: string;
    rewards: RewardDef[];
    claimed: boolean;
    claimedAt: number | null;
}
export interface PlayerStats {
    xp: number;
    level: number;
    currency: Map<string, number>;
    unlocks: Set<string>;
    skillPoints: number;
}
export declare class RewardSystem {
    private bundles;
    private stats;
    private xpPerLevel;
    private xpMultiplier;
    private rewardHistory;
    createBundle(name: string, rewards: Omit<RewardDef, 'id'>[]): RewardBundle;
    getBundle(id: string): RewardBundle | undefined;
    claim(bundleId: string): RewardDef[] | null;
    private applyReward;
    addXP(amount: number): {
        leveled: boolean;
        newLevel: number;
    };
    getXPForLevel(level: number): number;
    setXPMultiplier(mult: number): void;
    getCurrency(name: string): number;
    spendCurrency(name: string, amount: number): boolean;
    getStats(): PlayerStats;
    getLevel(): number;
    getXP(): number;
    hasUnlock(key: string): boolean;
    getSkillPoints(): number;
    getBundleCount(): number;
    getClaimedCount(): number;
}
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