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- YaBoing II, by Ali T. Ozer
-
- ARPA: ali@Score.Stanford.Edu
- REAL: Box 7703, Stanford, CA 94309
- --------------------------------------------------------
- YaBoing II is freely distributable and not for sale.
- --------------------------------------------------------
- This is a second version of the small WorkBench game
- YaBoing!,"Yet Another Boing." Except for the use of
- sprites and general silliness, YaBoing II is much
- different that YaBoing!.
-
- YaBoing II is really a "stack-calculator" simulator
- where you have to hunt down the numbers to be input
- and the operators to be applied...
-
- -The "calculator" has a 4-location stack. The window
- displays the four entries, with the bottom of the
- stack at the top (right under the title bar).
- -Inputs are one-digit only; when you catch a "number"
- sprite the value (0-9) is pushed to the stack.
- -If the stack overflows, you lose the bottom entry.
- -The operators "+", "-", "*", "/", pop the top two
- entries of the stack and push the result. If you push
- X and then Y, the result is X op Y (and not Y op X).
- If the stack has less than 2 entries, the operator
- is ignored and nothing happens.
- -The "POP" operator pushes the top element off.
- -The "SWAP" operator swaps the top two elements.
- -The "?" is a mystery number greater than 9.
- -The stack locations hold 32-bit unsigned numbers.
- -If "+" or "*" causes overflow, the result is simply
- truncated.
- -If subtraction causes a negative result, you get 0.
- -If you divide by ZERO, the system GURUs.
- -No, no, kidding. If you divide by ZERO the stack is
- cleared.
-
- So what's the goal of the game? To end up with the
- highest number on top of the stack at the end of the
- game. When the game ends the rest of the stack is
- discarded. The game lasts about 40-45 seconds, and
- about five seconds before the end your mouse pointer
- changes shape to warn you (so that you can make sure
- you have your best number at the top of the stack...).
-
- When the game ends the current score and the best so
- far are displayed. To play another game, simply click
- the right mouse button. YaBoing II can also be
- deactivated at any time with a right mouse click.
- (Left mouse will also work, but then you need to click
- on the YaBoing II window itself.)
-
- The high score is (2^32) - 1, I think. Good luck!
-