Simple Enemy Corpse Compat integrates Simple Enemy Mod with Corpse on Minecraft Forge 1.20.1.

When a Simple Enemy unit dies, the mod creates a Corpse entity using the corresponding Simple Enemy model and places the unit’s drops inside the corpse inventory. Items are inserted into the main inventory first, with overflow stored on Corpse’s additional-items page.

Features

Creates corpses for Simple Enemy units.
Uses the appropriate US, RU, or PMC unit model.
Preserves dropped items inside the corpse inventory.
Supports enemies that have no default drops.
Provides optional KubeJS integration.
Does not require KubeJS for normal use.
Prevents KubeJS corpse events from running again when a saved corpse is loaded from disk.

Requirements

Minecraft Forge 1.20.1
Simple Enemy Mod
Corpse

KubeJS is optional and is only required for scripting support.

KubeJS Example

Place the following script in kubejs/server_scripts/:

// Simple Enemy equipment can be modified using KubeJS's native event.
EntityEvents.spawned(event => {
  const entity = event.entity

  if (entity.type == 'simpleenemymod:ruunit') {
    entity.setItemSlot(
      'mainhand',
      Item.of(
        'tacz:modern_kinetic_gun',
        '{GunCurrentAmmoCount:1,GunFireMode:"SEMI",GunId:"tacz:m320",HasBulletInBarrel:1b,HideFlags:57.0d}'
      )
    )
  }
})

// Customize newly created corpse inventories.
SimpleEnemyCorpseEvents.corpseCreated(event => {
  if (event.sourceEntityId == 'simpleenemymod:ruunit') {
    // Incremental mode preserves existing drops.
    event.addItems([
      Item.of('minecraft:diamond', 2),
      Item.of('minecraft:bread', 4)
    ])
  }
})

To replace all existing corpse items instead:

SimpleEnemyCorpseEvents.corpseCreated(event => {
  event.replaceItems([
    Item.of('minecraft:iron_ingot', 8),
    Item.of('minecraft:gunpowder', 16)
  ])
})

Available corpse event properties and methods:

event.entity                 // The Corpse entity
event.sourceEntityId         // Source entity ID
event.sourcePersistentData   // Copied KubeJS persistent data
event.sourceEntity           // Source entity, if it is still loaded
event.items                  // Current corpse items

event.addItems(items)        // Preserve existing items and add new ones
event.replaceItems(items)    // Clear existing items and insert new ones
event.setItems('add', items)
event.setItems('replace', items)