Fixed issues regarding uncraftable and unusable backpacks, these issues should be fixed now.
However, Mojang changed how CustomModelData works in 1.21.4, so the resource pack is completely broken and won't work. The plugin should still work as intended, but of course you don't have textures or colored backpacks.

When I get a tad more time to look into resource packs, I will make an update, but that will probably conclude the plugin for < 1.21.4, since the code has to change a bit and won't work for older versions anymore (unless i find a workaround :3)

Backpacks 2.0 - Colors!!!

Yes. The Backpacks finally get a Colors Update! Better yet, in addition to colors, the resourcepack with my all-time favourite backpack textures is included now. The resource pack can be disabled in the config if you wish to use your own. The README on GitHub provides the latest URL for the resource pack and the SHA1 hash, if you wish to set it with Spigot directly.

Existing backpacks do not yet have the backpack-look, but when opening it, the new texture is applied automatically. The same goes for ender backpacks, of course.

You can now color backpacks with any dye, colored backpacks can be re-colored, and since you're such a skilled crafter, the old color is completely washed away.

If you want the old look back, you can simply wash it out with a water bucket in the crafting table. Naturally, you get to keep the bucket.

Unfortunately, due to a duplication glitch, you have to provide exactly one (1) backpack and one (1) dye when coloring, otherwise it won't work.

Here is a peek into all the different colors and crafting:

All Colors:


Coloring Backpacks:


Un-coloring Backpacks:

- Backpack names can now be customized in the Config.
- Default values are automatically added to your config, so there is no need to delete it or add them manually.

Custom Crafting Recipes for Backpacks!

Hey there, I added custom crafting recipes. Layout is as follows:

- Line1
- Line2
- Line3
Each line consists of 1 - 3 letters representing a material, the materials are noted below that.

Custom Recipe Examples

Example of current recipe:

Backpack:
shape:
- S
- E
- S
materials:
S: SHULKER_SHELL
E: ENDER_PEARL

Example for a golden apple-like recipe:

EnderBackpack:
shape:
- SSS
- SES
- SSS
materials:
S: SHULKER_SHELL
E: ENDER_CHEST


Changelog:

[+] Added custom crafting recipes
- Shape and Materials are customizable in the config, though fallback recipes are hardcoded
- To reset recipes, delete or rename the file; the file will regenerate itself
[+] Added prioritization of interactable blocks like crafting tables, doors etc, so now you need to shift while looking at them to open the backpack
[-] Removed red warning message in Lore of unassigned Backpacks from the Alpha

- Previously, the inventory of backpacks was saved twice in the files because I had experimented with that in the Alpha and forgotten about it
- This has now been fixed, the code has been removed
- The version of the plugin has also now been updated in the source code

Changes:
- API version set to 1.16, so everything 1.16 and above should work.
- Tested on 1.16.5 and 1.19.2, everything works as intended
- There are warnings on 1.16.5 ("Tried to load unrecognized recipe..."), but everything works as intended (afaik).