How do i make one without decompiling the original .jar file which is completely illegal according to the (possibly) non-existant licence file?
I made sure that 'reverse engineering' is not at all mentioned in the current license file, feel free to decompile, you have my explicit permission. Also, just about anything in the assets/ folder in the jar can be mimicked and put in the mods folder in the save directory (make one if it doesn't already exist),