Enemy Drops

Make monsters drop items when they die — fully configurable and host-only.
Only Host, clients don't need it. Native BepInEx mod.

Inspired by the original REPO Enemy Drops mod by ImVertro.
This version is a fully native BepInEx implementation for users who prefer not to use MelonLoader, with additional usability improvements.

What's new in v2.0

• Keep Enemy Drops Between Levels: You can now bring dropped items into the truck or keep them in your inventory to preserve them across levels and save them with your run!
• Configurable Preservation Cap: New MaxPreservedItems setting (default: 10) to balance your run progression.
• Dynamic Slot Recycling: Consuming or destroying a preserved item frees up space for new enemy drops.
• Informative Telemetry: Clear console logs alert you when an item is secured or when the capacity limit is reached.
• Engine Modernization: Complete rewrite powered by RepoAPI for flawless host-only replication and performance.

Features

• Monsters drop items upon death based on their danger level.
• Configure drop chances and weights for every item per monster difficulty tier.
• Set a maximum limit on item drops per level.
• Item Preservation: Option to keep items secured in the truck or inventory across subsequent levels.
• Preservation Limit: Configurable cap on the maximum number of enemy-dropped items that can be preserved simultaneously (default: 10).
• Only the host needs to have the mod installed — clients do not.
• 100% native BepInEx implementation.

Requirements

• BepInEx Pack for R.E.P.O.

Installation

1. Install the latest BepInEx Pack.
2. Place EnemyDrops.dll into your BepInEx/plugins folder.
3. Launch the game once — the configuration file will be generated automatically inside BepInEx/config.

Configuration

All settings are controlled through the generated file: osmarbriones.EnemyDrops.cfg located in BepInEx/config.

General Settings

• MaxDropsPerLevel (Default: 200): Maximum number of items that can drop in a single level.
• PreserveItemsBetweenLevels (Default: false): When enabled (true), enemy-dropped items that players carry to safety inside the truck or keep in their inventory will persist into future levels and be saved with your run.
• MaxPreservedItems (Default: 10): Maximum number of enemy-dropped items that can be preserved simultaneously. Standard shop-purchased items do not count toward this limit.

Difficulty-Based Drop Tables

The .cfg file includes three difficulty sections:

[Easy Monsters (Elsa for example)]
[Med. Monsters (Chef for example)]
[Hard Monsters (Robe for example)]

Each section contains entries like:

## Weight for "Item Gun Shotgun" on medium monsters. (range 0..12)
# Setting type: Int32
# Default value: 2
# Acceptable value range: From 0 to 12
Item Gun Shotgun = 2

How weights work

• A value of 0 means the item will not drop for that monster difficulty.
• Higher numbers increase the probability of the item being selected when a monster dies.
• You have full control over which items appear for each difficulty tier.

Issues & Bug Reports

Please report any bugs or suggest features on GitHub:
https://github.com/OsmarBriones/EnemyDrops/issues

Credits

• Based on the original concept from REPO Enemy Drops by ImVertro.
• Developed by Osmar Briones.
• Special thanks to Rucio for the REPO 0.4.0+ compatibility fix and weapon item additions.

Changelog

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

[2.1.1] - 2026-10-02

Changed

• Item visual color modification (EnableColorModification) is now disabled by default, keeping original item textures and colors untouched while leaving the reddish light aura enabled.
• Integrated cross-level item preservation and tracking with RepoAPI.Items.ItemPreservation for streamlined and reliable inventory persistence.

Documentation

• Added detailed "How Item Preservation Works" guide in README.md explaining secured item conditions, capacity caps, dynamic slot recycling, and shop item exemption.

[2.1.0] - 2026-09-30

Added

• Material color modification (EnemyDropVisuals) applied to all renderers of monster-dropped items, tinting and darkening colors via RGB multipliers and additive offset while preserving original textures, displays, and surface details.
• Pulsating reddish light aura (EnableDropAura) dynamically centered directly inside dropped items via combined renderer bounds, with automatic dimming and deactivation when grabbed or equipped.
• Dedicated [Visuals] configuration section in osmarbriones.EnemyDrops.cfg (EnableColorModification, ColorMultiplierR, ColorMultiplierG, ColorMultiplierB, ColorAdd, EnableDropAura, AuraIntensity, AuraRange).

Changed

• Rebalanced default drop table distributions according to in-game shop item values: moved budget grenades (GrenadeHuman, GrenadeDuctTaped) to Easy monsters, high-value tech/weapons (OrbZeroGravity, DroneZeroGravity, BaseballBat) to Hard monsters, and repositioned Sword and UpgradePlayerEnergy to Medium monsters.

[2.0.3] - 2026-09-29

Changed

• Enlarged announcement banner text on mod thumbnail ("NEW: NOW KEEP YOUR DROPS") for maximum legibility at small scale across Thunderstore and mod managers.

[2.0.2] - 2026-09-29

Changed

• Updated mod thumbnail with a new announcement banner highlighting the item persistence feature ("New: Now keep your drops").
• Added "What's new in v2.0" section to README.md detailing item preservation, configuration caps, and telemetry improvements.

[2.0.1] - 2026-09-29

Added

• Informative log message when a secured dropped item cannot be preserved due to reaching the MaxPreservedItems capacity limit.

Fixed

• Restored missing contributor credits in README.md (special thanks to Rucio for REPO 0.4.0+ weapon items).
• Restored complete historical changelog entries (v1.0.0 through v1.2.0) in CHANGELOG.md.

[2.0.0] - 2026-09-29

Added

• Configuration PreserveItemsBetweenLevels allowing players to keep enemy-dropped items across levels.
• Configuration MaxPreservedItems (default: 10) limiting the maximum number of simultaneous enemy-dropped items preserved into the truck across levels.
• Detection logic verifying that dropped items are secured (inside the truck, in player inventory, or held) before preservation.
• Integration with StatsManager.itemsPurchased and dictionaryOfDictionaries for save game serialization of preserved items.
• Dynamic count tracking via PreservedItemTracker that decrements when preserved items are consumed or destroyed.

Changed

• Replaced custom roulette item selection and spawning logic with RepoAPI.Items (ItemProvider.TrySpawnWeightedItem).
• Refactored entire codebase to comply with REPO_MODS_METHODOLOGY.md standards (standardized patch names, removed Hungarian notation prefixes, scoped mod internals).
• Transitioned SemiFunc_OnSceneSwitch_Patch to run as a Prefix so saved game data accurately reflects preserved items and cleaned drop tables before SaveFileSave.

[1.2.0] - 2026-05-11

• Fixed compatibility with REPO 0.4.0+.
• Added new item drops: Leaf Blower, Semiscooter, Semiscooter Small, Staff Torque, Staff Void, Staff Zero Gravity, Walkie Talkie Box, and Revive Item.

[1.1.0] - 2026-03-01

• Fixed bug causing items purchased from the store to have low battery.

[1.0.0] - 2025-11-18

• Initial release. Monstes drop items upon death based on danger level.