Installing the Map Editor
To be able to add map data for ModTools (spawnpoints, borders, chests, etc) you must install the Editor DataPack first.
Before installing to a world, you must download the editor from GitHub
Important
Make sure you are on Minecraft 1.20.4 before proceeding.
Warning
You may NOT use 1.20.5 or above currently.
Make sure to download the file named ModTools-Editor and not Source Code
Installing to a new world
In the create new world menu, select the More tab.
Select the Data Packs button
Select the Open Pack Folder button and copy the ModTools-Editor.zip file to the opened folder.
You should see the datapack in the Available side of the menu.
Click on the datapack’s icon to enable it.
From this point, you may configure your world’s settings to your liking.
Installing to an existing world
Go to your singleplayer menu, click once on the world you wish to install the editor to and click the Edit button at the bottom.
Select the Open World Folder button.
Inside the folder you opened, open the datapacks folder.
Copy the ModTools-Editor.zip file to the opened folder.
Installing the resource pack
The resource pack is a required part of the Modtools Editor, you can see how to install it here: Installing the Resource Pack