AutoDefense
Automatic countermeasures and missile counter - flares and chaff timed from the game's own decoy math, plus hardkill interception.
By HenDev
| Date uploaded | 4 days ago |
| Version | 1.0.1 |
| Download link | HenDev-AutoDefense-1.0.1.zip |
| Downloads | 22 |
| Dependency string | HenDev-AutoDefense-1.0.1 |
This mod requires the following mods to function
BepInEx-BepInExPack
BepInEx pack for Mono Unity games. Preconfigured and ready to use.
Preferred version: 5.4.2305README
AutoDefense
Automatic countermeasures and missile counter for Nuclear Option.
Flares, chaff and interceptors, released at the moment the game's own decoy math says they are worth the most. No hotkeys, nothing to remember mid-fight — it watches the missiles that are actually tracking you and answers them.
What it does
Every physics step it reads the game's own missile warning list — the missiles whose target is your aircraft, within 5 km and in line of sight — works out time to impact, and acts:
- Flares against IR seekers, chaff against ARH/SARH seekers. The station is chosen by the game's own picker, so it always matches your loadout.
- An interceptor at anything worth shooting at, including the ARM, optical and laser seekers that no decoy affects.
It works as host or client, and patches nothing - no Harmony, no game files modified.
Installation
Install with a mod manager (Thunderstore Mod Manager, r2modman or Gale) and launch the game through it.
Manual: install BepInExPack,
then drop AutoDefense.dll into BepInEx/plugins/AutoDefense/.
Configuration
Open the settings window in game, or edit
BepInEx/config/hendev.nuclearoption.autodefense.cfg. Everything is on by default.
| Setting | Default | What it's for |
|---|---|---|
Master / Enabled |
on | Off means the game behaves exactly as stock. |
Softkill / RequireActiveLock |
on | Never spend chaff on a radar missile that hasn't gone active. Leave this on — chaff does nothing before that point. |
Softkill / IrLeadSeconds, RadarLeadSeconds |
5 / 6 | The furthest ahead of impact it will ever fire. It normally fires much later. Raise if decoys are going out too late for you. |
Softkill / AmmoReserve |
0 | Decoys held back for manual use, ignored when impact is imminent. |
Hardkill / Enabled |
on | Interceptor launches. See below. |
Compatibility / ReviveConfigWindow |
on | Keeps the settings window working (this game breaks it). Harmless alongside other mods that do the same. |
Notes
Hardkill is the experimental half. Launching an interceptor briefly borrows your active
weapon station and target list, and hands both back on the next physics step. The game's own
AI does treat missiles as valid targets, so the approach is sound, but it has had limited
testing. If it picks odd stations or fights your targeting, set Hardkill / Enabled = false
— the countermeasures half is completely independent of it.
Reviewing a sortie. Two files appear under BepInEx/:
AutoDefense.state.txt— rewritten once a second with every inbound missile: seeker type, mode, range, closure, time to impact, the modelled decoy count, and what's been spent.AutoDefense.engagements.log— one line per decision and outcome, with the numbers behind it.
need=model-unavailable means the seeker couldn't be read and fixed lead times were used.
Compatibility
BepInEx 5, any Nuclear Option build matching it. No Harmony patches, no game files modified. Multiplayer-safe: it uses the game's own networked countermeasure path.
CHANGELOG
Changelog
1.0.1
Documentation only, no functional changes — the mod behaves identically to 1.0.0. Shortened the package description.
1.0.0
First release.
- Automatic flares against IR seekers and chaff against ARH/SARH seekers, for missiles that are actually tracking you.
- Release timing derived from the game's own decoy math rather than a fixed delay: the mod models how many decoys the seeker needs right now and opens fire only that far ahead of impact.
- Chaff is held until a radar missile goes active, because seekers discard it entirely before that point.
- Optional hardkill: fires an interceptor at the incoming missile, including at ARM, optical and laser seekers that no decoy affects.
- Keeps the BepInEx ConfigurationManager window alive, which this game otherwise breaks.
- Writes a live threat-picture file and an engagement log for reviewing a sortie afterwards.
