Dog Message Generation

As part of its constructor function, which runs when a dog spawns, it calls a function that will assign it a message number.  These message ids are stored in the dog overlay at offset 30EC, each separated by 8 bytes.  The function that assigns the message numbers works as follows:

There is a number stored in save context (offset F22 on J1.0) which contains the numbers 0 through D in a randomized order.  It updates when the zone loads and is used to determine the random messages.  There are 14 dogs in the track, and each is numbered 0 through D in their instance at offset 286.  One by one they take a nibble from the random number and add it to 3538 to form a message id (the doggy messages have ids from 3538 to 3546 and are listed here https://wiki.cloudmodding.com/mm/Text_IDs_(3000)).  Then, the message id 353D (unused?) is changed to 3538.

For example, the number which gives the permutation might read A4 37 86 92 BD 1C 50.  The dogs read this one byte at a time, starting with the least significant nibble.  So the message ids in this scenario, ordered from dogs 0 to D, would be

353C
3542
353F
353B
353E
3540
353A
3541
3545
3543
3544
3539
3538
3538