Frank is a Software Engineer with rich experiences on messeging system, embedded system and communication system development. This is his work notes.

Tuesday, July 07, 2009

20090707-hopper seed

"Strictly speaking, you can reproduce any particular Hopper run by using its random seed as a parameter (-sxxx) when you invoke the test. Hopper derives its randomness by calling rand() which is completely predictable if you to know its seed. All Hopper actions are bound by this rand() functionality so keystrokes (and screen taps) sent to the device from one seed run will reproduce 100% to a similarly seeded device."

http://blogs.msdn.com/hopperx/archive/2005/08/24/455572.aspx

create a shortcut file like this will run hopper in \ with seed number 305780

256#\hopper.exe -s305780

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