class ExpansionSystem {
    constructor(scene) {
        this.scene = scene;
        this.unlockedZones = ['FARM_START']; // List of IDs
        this.islandsDiscovered = [];
        console.log('🌍 ExpansionSystem: Initialized');
    }

    // Preveri, če je igralec v dovoljeni coni
    checkAccess(x, y) {
        // TODO: Map coordinates to Zone ID
        return true;
    }

    unlockZone(zoneId) {
        if (!this.unlockedZones.includes(zoneId)) {
            this.unlockedZones.push(zoneId);
            console.log('🔓 Zone Unlocked:', zoneId);
            // TODO: Remove fog/barrier
        }
    }

    travelToIsland(islandId) {
        console.log('🚤 Traveling to:', islandId);
        // TODO: Load island map / scene
    }
}