HeavyBugfix

v1.0.2·Updated 2026-08-05

Fixes the Heavy upgrade fire-rate roll range flipping between different brackets depending on equip/stack context.

About this mod Author’s original text

HeavyBugfix

Fixes a vanilla Mycopunk bug where the Heavy upgrade's fire-rate roll range

changes depending on equip/stack context, confusing players comparing copies.

The bug

Heavy's fire-interval property uses OverrideThenAdd. When building the tooltip

stat list, the game converts that to either Override or Add based on how

many Heavies are already equipped (GetAppliedCount), then runs it through

StatData.CreateInverse against the weapon's fire interval.

On a weapon with fireInterval = 0.3 and Heavy's range 0.38–0.45, that yields:

| Context | Displayed range |

|------------------------------------|-----------------------|

| No Heavy equipped yet / first copy | [-33.33% - -21.05%] |

| Another Heavy already equipped | [-60% - -55.88%] |

The rolled value is still seed-based; only the bracket text was lying.

The fix

This mod patches UpgradeProperty_FireInterval.GetStatData so tooltips always:

  • Use first-copy (Override) display semantics for OverrideThenAdd
  • Use the gear prefab baseline fire interval (not live modified stats)

Combat application (Apply) is unchanged — stacking still works as designed.

Dependencies

  • Mycopunk
  • BepInEx 5.4.2403+ (Mycopunk pack)

Install

r2modman (recommended): install normally.

Manual: place HeavyBugfix.dll in BepInEx/plugins.

Build

dotnet build --configuration Release

Authors

  • Sparroh

License

MIT — see LICENSE.

Install & use Install: follow the bundled instructions

  1. Unzip the archive from playbuff and read the bundled readme / instructions first.
  2. Most mods rely on the game's mod loader — the usual route is a community mod manager (such as r2modman): pick this game, install, and it handles the loader and dependencies.
  3. For a manual install, put the mod files into the matching Mod / plugins folder inside the game directory.
  4. Launch the game to confirm it loaded; mods with listed dependencies need those installed as well.

Install locations vary a lot between mods — the bundled readme is the most reliable guide.

Dependencies

Install these first, or the mod will not work:

BepInEx-BepInExPack_Mycopunk

File & checksum

Filename
HeavyBugfix-1.0.2.zip
File size
25.1 KiB