A resource pack that allows you to use hardcore hearts, but it doesn't just replace normal hearts with hardcore hearts, this resource pack uses core shaders to do this, that is, it is compatible with other resource packs allowing you to use hardcore hearts from other resource packs.

IMPORTANT!

• This resource pack does not work at all from version 1.20.1 onwards; it only works from versions 1.17 to 1.20

Resource pack used as an example in the gallery: Among-Us Hearts

In the wiki below you will find the github page where I found this resource pack, and after several tests and polishing it is here for you to download, use, modify and do whatever you want :D