In the emulation settings, under CPU Emulation Mode (as perfectly demonstrated in the screenshot above) it is clearly stated that "This should not be assumed to be deterministic." I think your next step should be obvious.
Would you like me to record off of your DSM file or do you want to record off of mine?
mindnomad and I have decided to make a 100% run of this game. Link to the current WIP: http://dehacked.2y.net/microstorage.php/info/1438492898/tas.dsm Use DeSmuME 0.9.10 with Advanced Bus-Level Timing OFF. Feel free to join us and record off of it.
I finally figured out how wild encounters are determined. It is also the first time I try to read any game code: First of all, the game will check the number of steps you have taken on grass in that area (or steps in a cave). That number is reseted when you change to anotehr area, and when you have an encounter, but NOT when you battle a trainer. If the number of steps is less than 5 (on grass) or less than 7 (on a cave), then the RNG is called, if RNG value divided by 656 is higher or equal than 5, there will be no encounter, else RNG will be called again. If the number of steps is higher (than 5 on grass, or than 7 on a cave), the first RNG call is skipped. The number of steps is stored in 0x0228FCB8 On the second RNG call, if RNG divided by 656 is higher or equal than 35, then there will be no encounter. Else RNG is called another time, and if RNG divided by 656 is higher or equal than 30 (for grass) or than 10 (for cave), there will be no encounter. If it's lower, there will be an encounter. The value that is terrain dependant is stored in 0x02291838. Just in case the explanation above is hard to understand, I'll write how the formula would look in C code:This means that for each grass step, you have a 10.5% rate of finding encounters, and 0.5% in the first 5 steps, and on a cave, you have a 3.5% to find an encounter, and 0.01% on the first 7 steps.Language: cint terrain_value = readbyte(0x02291838); //On normal grass, terrain_value = 30, on cave, terrain_value = 10. int counter = readbyte(0x0228FCB8); int max_counter = 8 - ((terrain_value * 256) / 10) / 256; //for grass, max_counter = 5, for cave, max_counter = 7 if (max_counter > counter){ counter++; if (rand() / 656 >= 5) return false; } if (rand() / 656 >= 35) return false; if (rand() / 656 >= terrain_value) return false; else return true;
Is anyone still working on this? I finally got a new rig so I'd like to continue this project if anyone's up to help. The latest wip desyncs on DeSmuME 0.9.10 unfortunately, though I haven'tdone much else besides encode the movie with 0.9.8