Trader biomes

Which trader spawns where is set by four biome tags in data/moresponge/tags/worldgen/biome/:

Tag	Trader	Default
moresponge:can_spawn_water_sponge_trader	Water Sponge Trader	Oceans, deep oceans, rivers, beaches, swamps
moresponge:can_spawn_lava_sponge_trader	Lava Sponge Trader	#minecraft:is_nether
moresponge:can_spawn_snow_sponge_trader	Snow Sponge Trader	#minecraft:spawns_snow_foxes
moresponge:can_spawn_fire_sponge_trader	Fire Sponge Trader	#minecraft:is_badlands, minecraft:desert

When a trader is due, the spawner picks a spot and checks the tags in this order: lava, snow, fire, water. The first tag that contains the biome decides the trader. A biome in none of the tags spawns nothing.

Example: fire traders in savannas

data/moresponge/tags/worldgen/biome/can_spawn_fire_sponge_trader.json:

{
  "values": [
    "#minecraft:is_savanna"
  ]
}

This adds savannas to the mod's list. Use "replace": true to replace the list instead.

Example: no water traders in swamps

{
  "replace": true,
  "values": [
    "#minecraft:is_ocean",
    "#minecraft:is_deep_ocean",
    "#minecraft:is_river",
    "#minecraft:is_beach"
  ]
}

To stop all natural spawning, use the moresponge:spawn_sponge_traders game rule instead.