They are two completely different codebases written in different programming languages (Java vs. C++). So, can you convert a .jar file directly into a .mcaddon file?
Create RP/blocks.json to link the block ID to the texture: convert jar to mcaddon work
"format_version": "1.20.0", "minecraft:recipe_shaped": "description": "identifier": "moreores:ruby_pickaxe" , "tags": ["crafting_table"], "pattern": ["###", " X ", " X "], "key": "#": "moreores:ruby", "X": "minecraft:stick" , "result": "moreores:ruby_pickaxe" They are two completely different codebases written in