// NPCSpawner.js - Sistem za spawnjanje NPCjev
class NPCSpawner {
    constructor(scene) {
        this.scene = scene;
        this.spawnInterval = 30000; // 30 sekund
        this.maxNPCs = 3; // 3 NPCji na 100x100 mapo
        this.spawnTimer = 0;

        console.log('🧑 NPCSpawner: Initialized');
    }

    spawnInitialNPCs() {
        // Spawn 3 NPCs at random locations
        for (let i = 0; i < this.maxNPCs; i++) {
            this.spawnRandomNPC();
        }
        console.log(`✅ Spawned ${this.maxNPCs} initial NPCs`);
    }

    spawnRandomNPC() {
        if (!this.scene.terrainSystem || !this.scene.npcs) return;

        // Random position (avoid farm area 20,20)
        let x, y, attempts = 0;
        do {
            x = Phaser.Math.Between(5, 95);
            y = Phaser.Math.Between(5, 95);
            attempts++;
        } while (this.isTooCloseToFarm(x, y) && attempts < 50);

        // Check if tile is valid
        const tile = this.scene.terrainSystem.getTile(x, y);
        if (!tile || tile.type === 'water') return;

        // Check if decoration exists
        const key = `${x},${y}`;
        if (this.scene.terrainSystem.decorationsMap.has(key)) return;

        // Spawn NPC
        const npc = new NPC(
            this.scene,
            x,
            y,
            this.scene.terrainOffsetX || 0,
            this.scene.terrainOffsetY || 0,
            'zombie' // Type
        );

        // Set to PASSIVE mode (random walk)
        npc.state = 'PASSIVE';
        npc.isTamed = false;

        this.scene.npcs.push(npc);
        console.log(`🧟 Spawned NPC at (${x}, ${y})`);
    }

    isTooCloseToFarm(x, y) {
        const farmX = 50; // Farm center (updated from 20,20 to 50,50)
        const farmY = 50;
        const farmRadius = 15;

        const dist = Math.sqrt((x - farmX) ** 2 + (y - farmY) ** 2);
        return dist < farmRadius;
    }

    update(delta) {
        // Check if we need to spawn more NPCs
        if (this.scene.npcs.length < this.maxNPCs) {
            this.spawnTimer += delta;
            if (this.spawnTimer >= this.spawnInterval) {
                this.spawnTimer = 0;
                this.spawnRandomNPC();
            }
        }
    }
}