FearFactory/1.20.1-FearFactoryTest/minecraft/kubejs/server_scripts/spawnrestrict.js

// priority: 0
// Visit the wiki for more info - https://kubejs.com/
const dimrule = [
	['man:managgresive','the_deep_void:deep_void'],
	['man:manfromthefog','the_deep_void:deep_void'],
	['man:manfromthefogback','the_deep_void:deep_void'],
	['man:mftfhang','the_deep_void:deep_void']
	];
EntityEvents.spawned(event => {
  const { entity } = event;
  let type = entity.type;
	if (!dimrule.includes(type)) {return;};
	const t = findRowWithValue(dimrule, entity.type);
	let d = dimrule[t][1];
	if(entity.level.name != d) {event.cancel();};
	
});

function findRowWithValue(matrix, value) {
  for (let i = 0; i < matrix.length; i++) {
    if (matrix[i].includes(value)) {
      return i; // Return the row index if the value is found
    };
  };
  return -1; // Return -1 if the value is not found in any row
};
/*
@silytonta
Is there a way for me to make mobs spawn in a dimension/biome that they usually dont?

@dob3a
yea, u can use "entity.block.biomeId" to get their current biome, and u can use "entity.level.name" to get their current dimension. 

sry for late reply i didnt see the notify*/