iw4Strike v0.3.1 alpha (Windows, Linux untested)

Alpha update of iw4Strike: Counter-Strike gameplay on Call of Duty: Modern Warfare 2 maps, built on IW4L.

Alpha. v0.3.1 fixes the HUD for CS 1.6 players and adds a Linux build. It includes everything from v0.3.0: the Defusal mode with the CS C4, money and the buy menu. The game is now iw4strike.exe (your settings carry over).

The Linux build (iw4Strike-v0.3.1-linux.tar.gz) hasn't been tested yet: it is built automatically, but no one has played it on Linux. Please report what doesn't work.

New in v0.3.1

• CS 1.6 HUD. Playing with CS 1.6 (no CS:S, or CS:S's Use box unticked), the HUD was the CS:S layout in a fallback font with no icons. It is now CS 1.6's own HUD, drawn with the sprites from your CS 1.6 install: the health cross, armor vest (and helmet), stopwatch timer, $ money with its +/- change, clip | reserve with the ammo icon, the C4 and defuse kit icons, the plant/defuse bar and the kill feed with CS 1.6's weapon icons. Numbers sit dim and light up when they change, like CS 1.6 (a little brighter at rest so they stay readable on MW2's sunny maps).
• Linux build (not tested yet): finds MW2 and CS:S in your Steam libraries on Linux (normal, Flatpak and Snap Steam), links MW2 next to the game, uses your desktop's folder picker for Browse..., and falls back to DejaVu Sans where the HUD would use Windows fonts.

What you need

• Call of Duty: Modern Warfare 2 (2009) on Steam
• Counter-Strike: Source on Steam (weapon models, sounds, HUD and the buy menu are read from your install). Without it you can select a Counter-Strike 1.6 install instead.

No game files are included.

How to play

Windows

1. Download iw4Strike-v0.3.1-windows.zip and extract it to a folder you can write to (for example Desktop or Documents, not Program Files).
2. Run iw4strike.exe. If SmartScreen warns you, click More info > Run anyway.
3. The game folders window shows what was found. MW2 and CS:S are found through Steam automatically; if not, press Browse... and select the folder. To play with CS 1.6 instead of CS:S, untick CS:S's Use box. Then press Play.
4. For the bomb mode, Create Game > Search and Destroy. Press B to buy. Press **** (the key under Esc) for the console, for example bot add 3`.

Linux (not tested yet)

1. Install MW2 in Steam through Steam Play: in its Properties > Compatibility, tick Force the use of a specific Steam Play compatibility tool, then install it. iw4Strike only reads its files. The native Linux CS:S works.
2. Download iw4Strike-v0.3.1-linux.tar.gz and extract it, for example to ~/Games: tar xzf iw4Strike-v0.3.1-linux.tar.gz.
3. Run ./iw4strike from that folder. MW2 and CS:S are found in your Steam libraries (normal, Flatpak and Snap Steam). Browse... needs zenity or kdialog. You need a Vulkan graphics driver and Ubuntu 22.04 or newer (or a similar distribution).
4. Then the same as on Windows: game folders window, Play, Create Game > Search and Destroy.

New in v0.3.0

Defusal (Search and Destroy as Counter-Strike's bomb mode, CS2 match format)

• First to 13 rounds, 1:55 rounds. The sides switch once, after round 12; that round end freezes everyone like the freeze time.
• 6 second freeze time at the start of each round: look around, buy and drop weapons for teammates, no moving or shooting.
• Survivors keep their weapons and armor, restocked with full ammo like CS2. Everyone else respawns with the knife and their side's pistol (Terrorists a Glock, Counter-Terrorists a USP).
• The round ends 7 seconds after it is decided. You can still fight, run from the bomb and save your gun. A team wiped out ends the round at once.
• CS radio voice at the end of every round ("Terrorists win!", "Counter-Terrorists win!", "Round draw!").
• Killcams are off for now. No escort, bomb or site markers float in the world.
• Round-end banner in the look you pick (Options > Multiplayer Options, or cl_roundbanner css|cs16|mw2): the CS:S win panel, CS 1.6's centre message, or MW2's round outcome.

The C4

• The Terrorist who picks up the bomb carries the CS C4 on slot 5 (CS:S model in your hands and in third person, green C4 icon on the HUD). G drops it for a teammate.
• Hold left click with the C4 in a bomb site to plant: 3 seconds, standing still, with the C4's keypad animation and CS:S's progress bar.
• The planted bomb is CS:S's, beeps like CS (from the bomb, louder and faster as it runs down) and blows up for 500 damage after 40 seconds. "The bomb has been planted" on the radio; the round timer goes away.
• Counter-Terrorists hold E on it to defuse: 10 seconds, or 5 with a defuse kit ($200, equipment menu or buy defuser, kept while you survive).
• Like CS 1.6, you can still plant (and defuse) in the pause after a round is decided; it doesn't change that round's result or money.

Money

• CS 1.6 economy in Defusal: $800 to start, $300 per kill, round rewards and the losing-streak bonus, $16000 at most, with the CS:S money panel.
• Free-for-all and team deathmatch buy for free and hide the money panel.

Buy menu (B)

• The game's own buy window, read from your install: the CS:S buy menu, or the CS 1.6 one when you play with CS 1.6. Point at a gun to see its picture and numbers. Pick with the mouse or the number keys.
• _vgui_menus 0 switches to CS 1.6's old numbered text menu (_vgui_menus 1 back). Saved with your settings.
• In Defusal you buy near your side's spawn during the freeze time and the 20 seconds after it. Each side sells its own guns.
• A gun bought over one in the same slot drops the old one (buy for a teammate), and a better gun comes up in your hand like CS.
• buy <name> in the console no longer needs cheats and takes CS 1.6's short names (fn57, elites, hegren).
• Autobuy (F1) and rebuy (F2), also as menu buttons and console commands. Ammo, night vision and the shield are no longer sold (guns come with full ammo), and the CS:S bargain button is gone.

Movement

• mv_mode csgo is now CS:GO's own movement (the default): CS:GO stamina, crouch-spam fatigue, CS:GO ground acceleration and speed clamp, the 1.1x bunny-hop cap and slower ladders. Built from the measurements and technical reference of CSMovementRust.
• mv_mode csgo64 / mv_mode csgo128: the same movement stepped like a 64 or 128 tick server (jump heights and bhop timing match those servers).
• The previous default is now mv_mode css. surf, mmod and cs16 are unchanged.

Also new

• Other players hold the CS:S weapon models in third person (and so do you in thirdperson).
• CS ladder sounds instead of MW2's.
• Mouse wheel switches weapons by default. To jump with it like in CS: bind MWHEELDOWN +jump.
• E only defuses: guns are picked up by walking over them, and the MW2 "swap weapon" prompt is gone.
• No hitmarker (the X and its sound).
• Round timer warning only in the last 10 seconds (no one-minute warning); set its volume in Options > Audio > Round Timer Warning.
• Create Game lists Free-for-all, Team Deathmatch and Search and Destroy; MW2's other modes are hidden.
• No medal chime and no killstreak announcer after kills.
• A flashbang behind you now gives a short light flash instead of nothing.
• Counter-Strike scoreboard on TAB, in the CS:S look (or CS 1.6's).
• Weapon switching at CS deploy times (0.75 s, AWP 1.45 s, Scout 1.25 s).
• HE grenade explosion sound from CS:S or CS 1.6, and CS 1.6's "Fire in the hole!".
• Faster game logic with bots: the script engine speed-up from IW4L pull request #72 by neptune (about 15-25% more fps with 12 bots on our test machine).
• Game folders window: a Use box for Counter-Strike: Source and for CS 1.6. Untick CS:S to play with CS 1.6 even when CS:S is installed; with both ticked, CS:S is used. Your folders are kept either way.
• The game is iw4strike.exe (was iw4l.exe); settings in iw4l-artifacts carry over.

Fixes

• Third person: your body no longer shakes against the camera while moving fast or bunny hopping.
• Search and Destroy no longer kicks you after a few rounds, and both teams' scores count every round.
• Round money now pays the bomb bonuses (planted, exploded, defused).
• Buying works during the freeze time.
• No more god mode during the end of a round, and the round-end voice plays once.
• Use triggers with a hint (every plant and defuse spot) could never be used with E: an engine bug, fixed.
• Radio voice pitch: "Terrorists win", "Bomb planted" and the other announcements no longer play at odd pitches now and then.
• Red barrels (Afghan and others) no longer explode while destructibles are off (sv_destructibles 0, the default).

Everything from v0.2.5 is still in: 24 CS guns with CS:S models and CS 1.6 damage, spread and recoil, silencers, burst fire, scopes, knife, HE / flashbang / smoke, kevlar and helmet, 100 Hz tick, the CS:S HUD with the MW2 minimap as radar, and the game folders window.

All controls and console commands: README

Known issues

• The Linux build hasn't been tested yet.
• Bots don't carry, plant or defuse the bomb yet.
• Guns lying on the ground are still MW2 models. With only CS 1.6 installed, other players also still hold the MW2 gun in third person.
• mv_mode isn't synced to other players yet, so everyone should use the same mode.
• Smoke grenades go off twice so the cloud lasts about 18 seconds like CS:S; the smoke timer will be reworked.
• Terminal: broken glass can turn red from some angles. Favela has rendering issues and low FPS.
• Very loud gunfire can clip (distort).

Help test it

Right now there is one tester. Please play it and try to break it. Look for exploits and bugs (movement, buying and money, the bomb, weapons, walls and props, playing online with friends). Report them in Issues with what you did, the map and mode, and iw4l-artifacts/logs/latest.log. Pull requests are more than welcome, even small fixes.

Credits

Built on IW4L (Apache 2.0). Gameplay references: Momentum Mod, ReGameDLL_CS, hlsdk-portable, Source SDK 2013 and CSMovementRust. See the README.

MW2 belongs to Activision. Counter-Strike belongs to Valve. iw4Strike isn't affiliated with either.