-/*-
- * The sproingies have six "real" frames, (s1_1 to s1_6) that show a
- * sproingie jumping off a block, headed down and to the right. But
- * the program thinks of sproingies as having twelve "virtual" frames,
- * with the latter six being copies of the first, only lowered and
- * rotated by 90 degrees (jumping to the left). So after going
- * through 12 frames, a sproingie has gone down two rows but not
- * moved horizontally.
- *
- * To have the sproingies randomly choose left/right jumps at each
- * block, the program should go back to thinking of only 6 frames,
- * and jumping down only one row when it is done. Then it can pick a
- * direction for the next row.
- *
- * (Falling off the end might not be so bad either. :) )
- */
-