/**
 * Quest System
 *
 * Manages quests and objectives with support for:
 * - Quest tracking
 * - Objective completion
 * - Quest rewards
 * - Quest states (available, active, completed, failed)
 */
import type { Quest, EventHandler } from './types';
/**
 * Quest system for managing quests and objectives
 */
export declare class QuestSystem {
    private quests;
    private eventHandlers;
    /**
     * Add a quest
     */
    addQuest(quest: Omit<Quest, 'id' | 'status'> & {
        id?: string;
        status?: Quest['status'];
    }): string;
    /**
     * Get a quest by ID
     */
    getQuest(questId: string): Quest | undefined;
    /**
     * Get all quests
     */
    getAllQuests(): Quest[];
    /**
     * Get quests by status
     */
    getQuestsByStatus(status: Quest['status']): Quest[];
    /**
     * Start a quest (mark as active)
     */
    startQuest(questId: string): boolean;
    /**
     * Complete an objective
     */
    completeObjective(questId: string, objectiveId: string): boolean;
    /**
     * Update objective progress
     */
    updateObjectiveProgress(questId: string, objectiveId: string, progress: number): boolean;
    /**
     * Complete a quest
     */
    completeQuest(questId: string): boolean;
    /**
     * Fail a quest
     */
    failQuest(questId: string): boolean;
    /**
     * Reset a quest
     */
    resetQuest(questId: string): boolean;
    /**
     * Remove a quest
     */
    removeQuest(questId: string): boolean;
    /**
     * Get quest progress (0-1)
     */
    getQuestProgress(questId: string): number;
    /**
     * Check if quest is completed
     */
    isQuestCompleted(questId: string): boolean;
    /**
     * Clear all quests
     */
    clear(): void;
    /**
     * Export quests state
     */
    export(): Quest[];
    /**
     * Import quests state
     */
    import(quests: Quest[]): void;
    /**
     * Register event handler
     */
    on(eventType: string, handler: EventHandler): void;
    /**
     * Unregister event handler
     */
    off(eventType: string, handler: EventHandler): void;
    /**
     * Emit event
     */
    private emit;
}
//# sourceMappingURL=QuestSystem.d.ts.map