Looking for an easy way to prevent players from having anything to do with an item until they've made it further through progression? Then look no further! ItemGator allows you to use datapack-style recipes in order to prevent players from being able to have an item until some other process - be it an FTB Quest Reward, a Per-Tick mcfunction or some other means - adds a tag to the player.

When the tag isn't present on the player, the item will turn into whatever item is defined as a substitute and all of the data for the original item will be stored on the substitute as NBT.

When the tag is present, the mod will use that NBT data on the item to revert it back to its original form, allowing you to push the use of an item to a later time.

Datapack examples:

Disallow access to an entire mod until the tag test123 is given to the player

In this example, the mod Immersive Engineering is being gated from any player that doesn't have the tag test123. When a player without that tag obtains any Immersive Engineering item, it'll turn into a stick until they are granted that tag.

{
  "type": "itemgator:mod",
  "mod": "immersiveengineering",
  "substitute": { "item": "minecraft:stick" },
  "tag": "test123"
}

Disallow an item or item tag until the tag test123is given to the player

In this example, any minecraft:planks will be turned into a stick until the player is granted the tag test123:

{
  "type": "itemgator:ingredient",
  "input": { "tag": "minecraft:planks" },
  "substitute": { "item": "minecraft:stick" },
  "tag": "test123"
}