Roomopolis

Yes you can use this in any modpacks!

Roomopolis allow you to create custom keys through Kubejs to place templates in world. Keys can be built in kubejs 

StartupEvents.registry('item', event => {
//Create a custom key item like this
event.create("test_key", 'roomopolis_key')
//String location of the template you want to spawn example file is found here data/roomopolis/structures/tiny_room.nbt
.templateId("roomopolis:tiny_room")
//The structure is always placed a block behind the block you click on as the player, the height adjustment allows you to adjust the height postion the template is spawned
.heightAdjustment(1)
//keyBlock is optional and not needed, if a block is defined here keys will only work on that block
.keyBlock("minecraft:iron_block")
})

Discord

Join my discord below for more information, reporting bugs or features that you want added:

https://discord.gg/benbenlaw