Metin2 Auto Hunt System: Architecture and Balance Guide

A Metin2 auto hunt system is a convenience feature that automatically grinds your character within a defined area, manages health and mana, and picks up dropped items. Many private servers offer it to keep players engaged and make the farming loop less tedious. But the feature is a double-edged sword: if it is designed badly, it can collapse your economy and devalue player effort overnight. In this article I cover both the architecture and the balance concerns.

What does an auto hunt system actually do?

At its core, an auto hunt module runs these tasks in a loop:

• Target selection: Scans monsters within a radius around the character and picks the nearest/most suitable target.
• Attack: Applies a normal hit or selected skills to the target.
• Survival: Uses a potion or returns to a safe spot when HP drops below a threshold.
• Looting: Automatically collects dropped yang, items, and metin stone fragments.
• Constraints: Only runs within a defined zone/map and stops when a time or kill limit is reached.

The most critical rule here is not architectural but philosophical: the system must run server-side. Any auto hunt system that trusts the client is an open invitation to cheat tools.

Server-side, not client-side

Most of Metin2's classic cheating problems stem from granting the client too much authority. If you run the auto hunt feature on the client (a Python UI or injected code), a player can hijack that logic and bend it in their favor: infinite range, instant kills, teleport looting. The correct approach is to make all decisions in the game server core. The client only sends an "start auto hunt" request; the server validates and executes everything else.

In practice this means building the logic largely through the quest system (lua) and/or core C++. The quest-based approach is the most common on community servers because it lets you write flexible logic without recompiling the source.

Skeleton with quest triggers

The quest system offers timers and event hooks (for example when kill, when login). You can keep a loop alive with a periodic timer. Below is a conceptual skeleton; on a real server you will need core-side functions exposed for target selection and attacks:

quest auto_hunt begin
    state start begin
        -- Started by a player command
        when "/auto" command begin
            if pc.get_map_index() != ALLOWED_MAP then
                syschat("Auto hunt is disabled in this area.")
                return
            end
            pc.setqf("hunting", 1)
            -- Loop firing every 2 seconds
            server_timer("hunt_tick", 2, pc.get_player_id())
            syschat("Auto hunt started.")
        end

        when hunt_tick.server_timer begin
            local pid = get_server_timer_arg()
            if pc.select(pid) == false then return end
            if pc.get_map_index() != ALLOWED_MAP then
                pc.setqf("hunting", 0)
                return
            end
            -- Potion/return logic when HP is low
            if pc.get_hp() < pc.get_max_hp() * 0.3 then
                -- return to a safe spot / use a potion
            end
            -- Keep going
            if pc.getqf("hunting") == 1 then
                server_timer("hunt_tick", 2, pid)
            end
        end
    end
end

The ALLOWED_MAP in this example ensures the system only loops on permitted maps. For the actual "find a target and hit it" step you must either add a new Lua function to the core (registered via CFuncTable on the C++ side) or trigger an AI-like follow/attack behavior. It is important not to invent function names here; build on the real API in your own server source.

Security and validation

Even if the system runs on the server, treat every request from the client with suspicion:

• Rate limiting: Check that the "start auto hunt" packet is not sent dozens of times per second; otherwise players can flood the server by multiplying loop timers.
• Range validation: Always compute attack and loot distance on the server. Never trust the client's claim of "I'm on that monster."
• State consistency: On every tick, verify the player is genuinely on an allowed map, alive, and logged in.
• Logging: Write earned yang and items to a separate table so you can audit it later.

The most critical part: game balance

A system that works technically can still ruin your game. Because auto hunt automates player effort, it multiplies economic input (yang, items, stones). To protect balance, put concrete brakes in place:

• Daily time/kill limit: For example 2 hours or 5,000 kills per day. The system shuts off once the limit is reached.
• Reduced drop rate: Keep drops during auto hunt below manual hunting (e.g. 50%). Playing manually should always be more profitable.
• Zone restriction: Only allow it on low/mid-level maps; keep endgame content (bosses, high-level metins) manual.
• Online requirement / AFK checks: Add a simple periodic verification, or at least auto-stop when the connection drops.
• Use a premium gate carefully: Making auto hunt paid creates a "pay-to-farm" perception that can alienate free players.

The golden rule: auto hunt should be a convenience, not an earning engine. A player who plays manually should always progress faster.

Testing and rollout

Never push the new system straight to live. First run it on a local test server with mock economy data for 24-48 hours and measure the amount of yang and items produced. Then observe real player behavior with a limited closed beta. Keep drop and time limits configurable from a config file so you can fine-tune without recompiling the server.

Frequently Asked Questions

Can't I just build the auto hunt on the client?

You can, but it is not recommended. Client-side logic is easily manipulated with cheat tools. Keeping decisions and validation on the server is essential for both security and auditability.

Should I use quest or C++ source?

Both together is the most robust. Quest/Lua is flexible for flow control and limits; the core C++ side is more efficient for performance-critical work like target scanning and attacks.

Does auto hunt break the economy?

Without brakes, it absolutely does. With measures like a daily limit, reduced drop rate, and zone restriction, you can manage that risk and keep the system healthy.

Want to add a balanced auto hunt system to your server? I can help end to end, from quest architecture to economy tuning. Get in touch and let's discuss your project.