greentea
Member-
Posts
69 -
Joined
-
Last visited
Reputation
10 GoodAbout greentea
- Birthday 01/17/1992
-
How hard is programming with the .sav file?
greentea replied to greentea's topic in Saves - Research
I don't do my homework most of the time anyways, I'm considerably lazy, and yet I'm still doing fairly well. I've got a long weekend that I'm going to use to study Chemistry, read English and do some Calculus. I prefer to program in the morning shortly after I get up. Even before I eat or anything, don't know why, but that's when I always programmed when I was loafing during summer. However I rarely have time when I wake up, I still wake up early enough to do minor things but I wish I had weekends (I hate work and I honestly don't need to work). Typically I'd work after dinner or something like that, it depends where it fits into my schedule. And as always, I'll have a dozen questions and this topic will be 10 pages by the time I'm done -
How hard is programming with the .sav file?
greentea replied to greentea's topic in Saves - Research
Ya OK, I have to check the save count. I remember reading it at like 11 or something when I was really tired and supposed to be reading for English. -
How hard is programming with the .sav file?
greentea replied to greentea's topic in Saves - Research
Oh, I get what you mean now. I should check the date on both to see which one was the last saved one. Makes sense. I guess I'm going to display that general block info first then, might as well if I'm grabbing the date anyways. -
How hard is programming with the .sav file?
greentea replied to greentea's topic in Saves - Research
So two separate parts, one is a backup of the other. I guess it shouldn't always be an exact copy since it's an archival backup in-case of a save fail, but I'm only going to access one so it works the same if I think of it that way. OK, so 136 bytes for the entire pkm file with the first 8 being the unencrypted values of the pv and checksum. And I guess I understood the rest of it, so hopefully I'll get a chance to crack this tomorrow and see how it goes. -
How hard is programming with the .sav file?
greentea replied to greentea's topic in Saves - Research
OK, let's see if I've got this correct. There are two pairs of blocks and each block has three parts, the general, storage and hall of fame. For my purposes though, I will only concern myself with the storage block. I may display a few things in a potential program from the general block such as trainer OT, ID and SID, but I won't concern myself with that for now. The first storage block starts at C100 and the second is at 4C100, but one is just a copy of the other, the backup. I think each 128 values is a new pkm file in the save? The PKM info of the .sav is encrypted so I have to decrypt it: using X[n+1] = (0x41C64E6D * X[n] + 0x6073) 1) sub X[n] as the checksum value where the checksum value is: the sum of the encrypted hex from 0x08 to 0x87 truncated to 16 digits. 2) Y xor rand() where: Y is the is the 2-bit word (hex value) from 0x08 to 0x87 and rand() is X[n+1] This value becomes the unencrypted byte (of what?). 3) Unshuffle the blocks using the algorithm and equation: ((pv >> 0xD) & 0x1F) % 24 where pv is 0x00 to 0x03 and the rest is straight forward enough, it's just math stuff (Is the pv there the encrypted pv of the pkm file in the .sav file?) then I rearrange the values of the pkm file in the .sav file according to the decimal value. I essentially assign A as the first 32 hex values of the file and continue through to D as the last 32 hex values. (how does it work if it's 128 hex values when I use values over a decimal of 128 from the pkm file?) As you can see I'm a little confused, but I think I get a majority of it. Hopefully I can get some understanding of it soon so I can actually begin to program something later this week. Now I should have the information for the pkm file as if it were a pkm file right? -
How hard is programming with the .sav file?
greentea replied to greentea's topic in Saves - Research
I hope this book has that, because I do want to learn. I think it has a section on databases so I'll look that up soon. For now, using records of arrays works for me. It's obviously not the best method, but at the end of the day, if it can do what I want, then I have no complaints really. It does what I need it to do, and works fast enough not to care. I try to use whatever knowledge I can first before having to search new stuff. I use text files to store the information and read them in as variables into the arrays, I think it's better than hard coding, especially when there's a large upper bound, but obviously not as good as your method. But again, it works fine right, program doesn't take forever to load so it's OK. -
How hard is programming with the .sav file?
greentea replied to greentea's topic in Saves - Research
I plan on doing something like that, but filtering for all pokemon on the save that meet the criteria. Other thing is I have limited programming knowledge. I've got a book I'm working through but I still don't know too much. I have one crappy course worth, and the last project made me google/ask experts for help with. My idea of a database of information right now is a record of arrays. -
How hard is programming with the .sav file?
greentea replied to greentea's topic in Saves - Research
It first started that I was only interested in programming certain parts of the pkm file, but it eventually grew into programming everything. I've got what's essentially a pokesav edit screen that I've made entirely myself (less the stuff you helped me out with). I'll take a look at what you posted and see what I get. Right now, I'm only concerned with the Pokemon in the sav file and particularly only the PC Storage ones. What I plan to do is some sort of program that can save pkm files out of the sav file like Pokesav. But what I also plan to do is have the user be able to define some sort of search parameters and then display the pokemon that meet requirements and display them. So if you say bred 50 pokemon and had the eggs, you could search which ones had good IVs or if you wanted to find all the EV trained Pokemon in Attack, or even all the, say 10 ANIV events. -
I've done extensive programming with the pkm file, I've got almost all the details from the pkm file completed. Now I'm considering making a project with the sav file. A suggestion was a search function to search through your pkm files in the save to sort out files. But I looked through and it doesn't seem as linear as pkm files. Is it hard to do? I would only plan on displaying a couple of basic things like the OT and stuff which are simple, and then the PC Pokemon stuff. I just know that it's not as simple cause I looked at it. Looks like it's encrypted or something. If it's not too hard, would someone mind telling me how to do the box stuff? Thanks.
-
X-Act always says, given the seed _____, but in my case, I want to determine the original seed, you know, work backwards.
-
Well, I'll take a whirl at it when I get back from work. I'm sure I'll end up contacting him eventually, but lets see how far I get first. Thanks.
-
Cool. I'm hoping to ultimately achieve something like in Legal.exe, where it determines the algorithm used to generate the Pokemon. Cool thing to do that doesn't seem too difficult if you know all the stuff to do (which someone knows). Just a matter of knowing what to do.
-
I've been looking over the guides and talking with some people. I'm concerned about how they can tell which formula the Pokemon was generated with. From what I know, certain formulae (Wild NDS, Common GBA etc), toss out results from the PRNG. If it tosses out two or three, how do you know? The value isn't stored anywhere, it's just a garbage value. Could someone help explain this to me? I understand the coding behind it, just not how I'm supposed to apply the PRNG to get results. Like how Pokemon X is from formula Z.
-
Ah, so you are right. Seems I wasn't thinking straight, I had forgotten this was a Platinum only event. Thanks for helping me sort that out.
-
But I shouldn't have to do that. It should be legitimate to be obtained on a D/P game cart. It's not the pokemon I'm concerned about, I hear these things aren't too rare or hard to get, my friend probably has a dozen, but the fact that legal is disputing the results. If that changed the results, then I would suggest that the current version of Legal is flawed.