Treat Mcaddon as a destination format that enforces its own structure and runtime expectations.
An .mcaddon file is a ZIP archive that contains both .mcpack and .mcworld files to distribute Add-Ons. Convert Jar To Mcaddon
Copy all .png files from the Java JAR into your new Bedrock resource pack's textures/ folder. Treat Mcaddon as a destination format that enforces
Let's walk through a real partial conversion of the famous mod (adds copper, tin, and mythril). Convert Jar To Mcaddon
Once you have recreated the functionality: