ABPB — Artificial Intelligence Bot for Counter-Strike 1.6

An independent, identity-renamed build of AiBo 4.3.3 (YaPB fork), using its own abpb namespace so it can run next to YaPB, SYPB and other bot systems.

ABPB keeps AiBo's Human Copycat, Human Aim, local learning, navigation, exploration and procedural dialogue, while every command, cvar, folder, DLL, Metamod name and AMXX native uses the separate ABPB / abpb identity.

• Base: AiBo v4.3.3, upstream commit 760180e
• Plugin: addons/ABPB/bin/ABPB.dll (32-bit Metamod plugin)
• Config: addons/ABPB/conf/ABPB.cfg (181 abpb_* cvars)
• Commands: abpb (short alias abp)
• AMXX module library: abpb
• License: GPL-2.0-or-later

中文说明 · Quick install (中文) · Build guide · Credits · Provenance notice

Download

Download the latest ABPB-*-Windows-x86.zip from Releases. The archive contains the DLL, configuration, language files, a Dust2 navigation graph, optional AMXX module/include/sample and Chinese documentation.

Download the matching ABPB-*-Windows-x86.zip.sha256 file from the same release to verify the package. SHA256SUMS.txt inside the ZIP covers every packaged file.

Install

1. Close Counter-Strike 1.6 / HLDS.
2. Merge the archive's addons folder into your cstrike folder:

   cstrike/addons/ABPB/bin/ABPB.dll
   cstrike/addons/ABPB/conf/ABPB.cfg
   

3. Make sure Metamod is installed, then add this line to cstrike/addons/metamod/plugins.ini:

   win32 addons/ABPB/bin/ABPB.dll
   

4. Start the server and check the console:

   meta list
   abpb version
   abpb add
   

ABPB is a Metamod plugin, not a GameDLL. Do not put it in liblist.gam and do not rename it to mp.dll. Only 32-bit (x86) GoldSrc is supported.

To use the Simplified Chinese interface, set this in cstrike/addons/ABPB/conf/ABPB.cfg:

abpb_language "chs"

Then run exec addons/ABPB/conf/ABPB.cfg or restart the server.

Coexistence with YaPB / SYPB

Item	ABPB	YaPB	SYPB
Folder	addons/ABPB	addons/yapb	addons/sypb
Command	abpb / abp	yb / yapb	sypb
Cvar prefix	abpb_	yb_	sypb_
Bot quota	abpb_quota	yb_quota	sypb_quota

The files, commands, cvars and plugin names do not collide, so ABPB can be installed next to other bot systems. However, only one bot system should actively manage bots at a time. Two managers both hook the same GoldSrc engine functions, create fake clients and compete for the same edict/player slots; with both auto-filling, a 32-slot server can be driven past its limits and the server may exit with no free edicts or a similar fatal error.

ABPB includes a safety check:

• At map start it looks for other common bot cvars (yb_*, sypb_*, fapb_*, ebot_*, podbot_*, pb_*, zbot_*, zb_*, realbot_*).
• If one is found and abpb_compat_auto is 1 (default), ABPB sets abpb_quota 0 and abpb_autovacate 0 and writes a warning to the server log/console.
• Set abpb_compat_auto 0 only if you deliberately want to manage several quotas yourself.
• The default admin setinfo key is _abpw, not YaPB's _ybpw; authenticate with setinfo _abpw <password>.

For a mixed test, load only one bot manager, or set every other system's quota to 0 and add bots manually from one system at a time. abpb removebots only removes ABPB bots.

Commands

Run these in the server console:

Command	Purpose
abpb version	Show the ABPB version
abpb add [difficulty] [personality] [team] [model] [name]	Add one bot
abpb fill [team] [count] [difficulty] [personality]	Fill bots automatically
abpb removebots [instant] [team]	Remove ABPB bots
abpb list	List ABPB bots
abpb menu	Open the main bot menu
abpb weapons [mode]	Set the weapon mode
abpb cvars	List all cvars
abpb graphmenu	Open the navigation graph editor
abpb_human_status	Human Copycat status
abpb_human_aim_status	Human Aim status
abpb_learning_status	Local learning status
abpb_explore_status	Geometry exploration status
abpb_chat_status	Procedural dialogue status
abpb_final_status	Combined 4.3.3 status
abpb_human_save / abpb_human_reload	Save / reload Human Copycat data

Settings

Edit cstrike/addons/ABPB/conf/ABPB.cfg; every option has a comment above it.

Setting	Default	Purpose
abpb_quota	31	Target bot count
abpb_compat_auto	1	Detect other bot systems and set ABPB quota/autovacate to 0
abpb_quota_mode	normal	normal, fill or match
abpb_language	en	Interface language; use chs or cht for Chinese
abpb_human_copycat	1	Enable Human Copycat
abpb_human_aim_level	100	Global Pro aim ceiling; -1 selects adaptive mode
abpb_human_aim_skill	100	Base aim skill
abpb_human_reaction_skill	100	Base reaction skill
abpb_human_pro_profiles	1	42 player-inspired profiles
abpb_human_hltv_skill	1	HLTV-ranking ability weighting
abpb_human_ct_patrol	1	Dust2 CT search patrols
abpb_learning	1	Local learning system
abpb_chat	1	Bot chat
abpb_human_chat_language	profile	profile, or force en / zh / ru …

Player names and rankings are simulation references, without endorsement or measured equivalence to real players. The ranking-to-ability conversion is AiBo's own design.

Features

Area	Implementation
Navigation	Native .GRAPH navigation, observed human routes and geometry exploration with floor, clearance, connection and progress checks
Human Aim	Reaction delay, bounded turning, aim variation, recoil handling, tapping, bursts, spray control, counter-strafe, preaim and scoped AWP behavior
Human Copycat	Observes eligible human movement and aim, stores map-local demonstrations and reproduces bounded behavior
42 profiles	AWP/rifle preferences and simulated ability weights inspired by historical HLTV rankings
Local learning	Tabular reinforcement learning, demonstration priors, bot-vs-bot updates, persistent experience, opponent adaptation and team formation learning
Exploration and dialogue	Geometry exploration plus local procedural conversations in the profile languages, without a cloud service, GPU or downloaded language model
Persistence	Validated map-local files for demonstrations, routes, learning, exploration, strategy memory and aim calibration

AMXX module (optional)

Only needed if your own AMXX plugin calls ABPB natives.

1. Copy addons/amxmodx/modules/abpb_amxx.dll.
2. Add abpb to addons/amxmodx/configs/modules.ini, or use #pragma loadlib abpb.
3. Copy addons/amxmodx/scripting/include/abpb.inc into your include folder.
4. Recompile against abpb.inc; see abpb_sample.sma.

All natives start with abpb_, for example abpb_get_api_version, abpb_get_bot_count, abpb_add_bot and abpb_is_user_bot. The module library name is abpb, which does not collide with yapb or sypb.

Build

Requirements: CMake 3.22+, a C++20 compiler, Python 3, and Ninja or Make. Dependencies are vendored under ext/.

Native fake-engine tests:

cmake -S . -B build/test -G Ninja \
  -DCMAKE_BUILD_TYPE=Debug -DABPB_NATIVE=ON -DABPB_64BIT=ON \
  -DABPB_BUILD_TESTS=ON -DABPB_WITH_TLS=OFF \
  -DABPB_WITH_AMXX=OFF -DABPB_LTO=OFF
cmake --build build/test --parallel 4
ctest --test-dir build/test --output-on-failure --timeout 90 --parallel 2

Windows x86 with MSVC:

cmake -S . -B build/windows -A Win32 -DABPB_WITH_TLS=ON -DABPB_WITH_AMXX=OFF -DABPB_LTO=OFF
cmake --build build/windows --config Release --parallel 4
python tools/check_dll.py --arch i386 build/windows/Release/ABPB.dll

The build guide covers MinGW/Zig cross-builds and the optional AMXX module.

Validation and limitations

• The shipped Windows x86 binaries were built with Zig 0.17.1 (Clang, x86-windows-gnu) plus CMake/Ninja and link statically against libc++/libc++abi.
• ABPB.dll and abpb_amxx.dll pass the 32-bit DLL contract check and were test-loaded with a 32-bit LoadLibrary harness.
• Host tests: 292/293 pass. The only failure is aim_baseline_compatibility, caused by small Windows libm/FP differences from the Linux-recorded baseline (max 0.702°, not a rename or runtime defect).
• No real Counter-Strike 1.6 server was available in the build environment, so live gameplay still needs testing on your server.
• The DLL imports the UCRT (api-ms-win-crt-*). Windows 10/11 include it; Windows 7 needs KB2999226 or the VC++ 2015–2022 x86 runtime.
• TLS is disabled in this build (no cacert.pem); local graphs and learning are unaffected.

Legacy AiBo documentation is kept for feature details; its old aibo_* command names and installer paths are historical. The current names are always abpb_* and addons/ABPB.

Credits and license

AiBo was created and maintained by K9_einzwei (keinzwei). AiBo builds on YaPB, jeefo and the YaPB contributors, with PODBot / Count Floyd ancestry and the RealBot Human Copycat extension. ABPB is an identity-renamed fork prepared by the ABPB contributors; all upstream authorship and graph/runtime credits are retained.

The combined fork is GPL-2.0-or-later. Read LICENSE, NOTICE-ABPB.md, CREDITS.md and the notices under ext/ and cfg/addons/ABPB/licenses/.

Counter-Strike and Half-Life belong to their respective rights holders. This package does not include the game.