In order to add modded blocks, entities and items to IDs from Euphoria Patches within your resource-pack, make use of *.properties.json. These are placed within the euphoria/ folder.
There are 3 files within this category:
block.properties.jsonentity.properties.jsonitem.properties.json
JSON Format
The following are the parameters specified in the JSON.
remove - IDs that should be removed from any ID within Euphoria Patches’ block.properties, entity.properties and item.properties. It must match the exact blockstate (for blocks). Regex is allowed.
<type>.<id> - The type here is either block, entity or item and the ID is the ID the object should be added to. This key should correspond to a list of stuff to add to that ID. The IDs can be found within Euphoria Patches’ block.properties, entity.properties and item.properties
layer.<layer> - This is only applicable for block.properties.json. It changes which render-layer the block is placed under. This is useful for blocks like glass, which may not be rendered as translucent. See Euphoria Patches’ block.properties for more information.