Playing the Game:
To play the game you have two options. The online emulator provides very easy access but if you're interested in a real Lisp OS, eventually you'll want a personal copy.
ONLINE https://interlisp.org/software/access-online/
- Use the online Medley Environment and upload the RING.LISP file using the "IMPORT/EXPORT" button on the VM there. In the window, drag your copy of RING.LISP over.
- Once, you've uploaded the RING.LISP file move back to the Interlisp desktop. Right click a blank space on the desktop and select EXEC -> Interlisp from the menu. (Drag out the window it's prompting for)
- Type (LOAD "RING.LISP") to load the file you've uploaded.
- In the same Exec window type (HUNGARIAN.RINGS) and the game will prompt you to position 2 windows. One is the live puzzle and the other is a card with a solved picture.
- To play the game simply click inside the loop you wish to shift. Left click rotates left, right rotates right. (The game actually just uses the angle from the center of the screen to the mouse to determine the ring to rotate)
- To quit the game middle click the puzzle window and select 'Close'. (The other window can be right clicked and 'close' selected.)
- It is probably best to log out when done. (LOGOUT)
OFFLINE https://interlisp.org/software/install-and-run/
- Place the file in the root directory of your medley install and follow steps 2 onward. This is '~/il/' for me on Linux. Consult the docs for where your root directory for Medley is otherwise.When you start medley you'll want the full environment with the --apps flag. Otherwise you'll have to adjust the unknown symbols of DRAW.BALL. (Which I didn't catch)