Mod loader

NeoForge

Minecraft version

1.21.1

Woodwalkers version

5.6

CraftedCore version

5.8

Modloader version

21.1.129

The latest.log file

latest.log

Issue description

Several attempts were made to apply custom traits (night vision for fox and unable to swim for bat) via data packs. The traits only seem to appear briefly after a datapack /reload and then immediately stop working.

Steps to reproduce

1. Insert data pack into saves/worldname/datapacks
2. Open game
3. Change into 2nd shape
4. Observe lack of traits being applied

Other

No response

Hey! First of all, it seems like you registered the UndrownableTrait for the bats. In order to avoid swimming, you'll need to use the CantSwimTrait. Note that it doesn't prevent moving in water but jumping in water:

{
  "entity_types": [
    "minecraft:bat"
  ],
  "traits": [
    {
      "type": "walkers:cant_swim"
    }
  ]
}

For the foxes, you'll need a high effect duration, otherwise the night vision will start to flutter.. The file should look like this:

{
  "entity_types": [
    "minecraft:fox"
  ],
  "traits": [
    {
      "type": "walkers:mob_effect",
      "mob_effect": {
        "id": "minecraft:night_vision",
        "duration": 100000,
        "amplifier": 0,
        "show_particles": false,
        "show_icon": false
      },
      "show_in_inventory": false
    }
  ]
}