Player Inventory Stacks

A single-purpose BepInEx 5 mod for The Planet Crafter. Matching items stack to 64 in player backpacks only, with a small white quantity at the bottom right of each stack. The 65th item starts another slot. Single items have no number, like Minecraft.

Chests, storage containers, machines, vehicles and equipped-item slots keep their normal capacity and one-item-per-slot behavior. Items with different saved state (such as DNA, names or charge) remain separate. Carried objects that own another inventory also remain separate.

Install with r2modman

1. Select The Planet Crafter and your profile in r2modman.
2. Install BepInExPack by BepInEx, version 5.4.2305 or later, from the Online list. This is the mod loader, not another gameplay mod. Official package.
3. Use Import local mod and select PlayerInventoryStacks-1.0.0.zip. Depending on r2modman version, this is under the Profile menu / Import-Update or Settings / Profile.
4. Click Start modded.

If local ZIP import is unavailable, use r2modman's Browse profile folder, then copy the supplied PlayerInventoryStacks.dll into BepInEx/plugins/PlayerInventoryStacks/. Install the loader in step 2 first. Do not put this DLL in the game's Managed folder.

The user's Default Planet Crafter profile was empty when this was built. This delivery does not modify that profile or the game installation.

Moving and using items

• Left-click: moves one item. A backpack stack of 64 becomes 63, and the chest receives one item in one slot.
• Shift + left-click, or the game's configured accessibility key + left-click: uses the game's transfer-all-matching-items action, stopping when the destination cannot accept more. A stack of 64 becomes 54 when filling an empty ten-slot chest. If several backpack stacks contain the same item type, this action can transfer from all of them, as in the base game.
• Moving items back into the backpack combines compatible items up to 64 per slot.
• Consume, drop, equipment actions, sorting, and Move All retain their normal controls. Consuming or dropping a displayed item acts on one item.
• Tab, then right-click water, food, or an oxygen refill: consumes exactly one item when the game accepts its use (64 becomes 63), refreshes the quantity, and clears the slot when its final item is consumed. The game's usual full-gauge restrictions still apply.

There are no settings, extra hotkeys beyond the requested Shift transfer, or other gameplay features.

Saves and verification

The mod keeps the game's individual item IDs and native save format; it does not replace items with synthetic quantity objects. Before disabling or removing the mod, unload your backpack until its individual item count fits the normal number of backpack slots. Otherwise vanilla capacity handling can drop or reject overflow items.

Built against the installed Assembly-CSharp.dll on 6 September 2026 (Unity 6000.3.2). Build completed with zero warnings/errors. 60 offline checks passed, including the exact 64-to-63 and 64-to-54 transfer cases, single-item consumption of water/food/oxygen, 500 randomized capacity comparisons, item-state separation, and patch transformations checked against the installed game assembly.

Live gameplay and visual rendering have not been tested. Try a test save first: mine two iron, inspect the quantity label, transfer to a chest, test Shift transfer, craft an item, and save/reload. Multiplayer has registration support but has not been validated; the host and all participating clients need the same mod.

The profile's BepInEx/LogOutput.log should contain:

Player Inventory Stacks 1.0.0 loaded: 64 items per backpack stack; containers unchanged.

If a future update changes a required patch target, the mod reports an error and removes its own patches instead of continuing with a partial patch set.

Source and build

Source lives in src/. PlayerInventoryStacks.csproj references your installed game and the local build-only DLLs in lib/. Game, Unity, BepInEx, and Harmony DLLs are not included in the distributable mod ZIP.

Run powershell -ExecutionPolicy Bypass -File ./build.ps1 from the project directory. Override GameManaged via MSBuild when building against another install. Inspection output under inspection/ is local reference material and is not part of the release or source archive.