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It's a game designing software if I'm not mistaken.
Thanks for that! It looks freaking awesome and I'd love to give them a hand. Peace!
True, but a lot of people I've seen who said they want to do something, never put much effort into learning. Sure there are some people who are willing to learn, but I don't see too many of those kind of people.
LOL. I'm just giving him a heads up. I basically said, if he's willing to do the work, then go for it. I'm just saying he can't rely on others too much. I'm willing to point him in the right direction if he needs help. Otherwise I wouldn't have even bothered posting in this thread lol. I'd hate for him to get his hopes up and then later be disappointed.
shameless plug: im releasing something SOON.
You're making it sound like it's something that can be learnt in a few hours. I don't know what you do in life and what you study/have studied, but I know it is very difficult for me who isn't in the computer sciences field (med).
I don't get what's mean about my post. I'm just warning him of some problems he may face. What I said about people sticking to what they got is true. There's no reason that people still stick to PJ64k when there's better online emulators that desync a lot less. I could go on and on, but my point was that he has to rely on himself if he expects this project to happen. If it's something he doesn't have much time for, then forget it.That's life man. Nobody is going to do the work for you (most of the time). I've had a lot of things I wanted to see happen, that I will never see happen, unless I devote the time into doing it myself. Anything negative I say is from my own experiences. Don't forget that I did give him advice. Looking at similar projects will help him a lot, if he decides to work on this project.
Well I guess I need to improve my comunication skills lol. I understand people live busy lives, so I don't blame people if they don't have the time to put into learning this stuff. I honestly think I spent too much time trying to learn certain things. So now I'm trying to cut down on that. Learning programming or hacking is very difficult for beginners. That being said, I'm willing to help people learn.
Lol you're an interesting poster :D . That last sentence is especially true. Time is money!
dpw
, any updates on this?
FIrstly, sorry for my late reply!Lol you're an interesting poster :D . That last sentence is especially true. Time is money!
I think I know a better option tbh. Instead of remaking the game in unity, why not reverse engineer the game enough to the point where you statically recompile and optimize it for PC. I've looked at some really interesting work lately. Not only will you practically have an exact replica, but you may actually save time! At the very least, I think you'll learn a lot more from doing this method, than attempting to make one in unity.
@
You are totally right, bro! Unity can be coded using C#, JS and another language which I forgot!
Deal, dude! I will let you know!
Ok that's good. So with enough time, you can achieve your dream. Imo C > Java :D . You have motivation and I like that.
Well, it sounds like your ultimate goal is to decompile the game. While it's not impossible, it is pretty difficult. By the time you're able to do this, you'll have practically studied everything about the game anyway. Not to say it's useless, but it you should not attempt this just for the sake of convenience, because it's nothing but convenient to decompile a game.
My best advice is to push your brain to the limit. Spend your time wisely. Be as creative as possible. Try new things any time ideas pop up in your head. Learn from your mistakes. Write a lot of things down, including things you learn.
That's good to know! Thanks!! But why exactly Nemu64 and not project 64?
As far as reverse engineering goes, I just spent a few minutes with studstill looking at the rom instructions in hex. All I need is the datasheet with the mips instructions and I could very easily walk through each instruction and see exactly whats happening. It would obviously cost a lot of time that I may not have, but the degree of difficulty is very low.Lol you're an interesting poster :D . That last sentence is especially true. Time is money!
I think I know a better option tbh. Instead of remaking the game in unity, why not reverse engineer the game enough to the point where you statically recompile and optimize it for PC. I've looked at some really interesting work lately. Not only will you practically have an exact replica, but you may actually save time! At the very least, I think you'll learn a lot more from doing this method, than attempting to make one in unity.
@
Just disassemble it.
That has been done. I just need a list of what every command does and its syntax. For example, "SRLV R2, R0, R0" off the top of my head I don't know what SRLV is so I would need to refer to the datasheet, then knowing what the command does I need to look at what the parameters are to know how this operation is affecting registers R2 and R0. This isn't your Z80 assembly that you used to program your TI-83 calculator with 8 different operations, theres a lot more commands and operations available for use with the 64 and the command library is needed to easily reverse engineer the code. Stop being an amateur programmer that took a class and knows a couple words and has the vocabulary to critique but doesn't have the skill level to solve and be constructive, and instead be either silent or a proficient programmer that actually does what is needed by this community.
@@Shears , is there a software for disassemble-ing? Also, is there any sort of material/topic about N64 rom hacking (smash bros only actually) that I could study from?
Thank you!
Madao
and @
S
Studstill
are much more knowledgeable about the resources available and the documentation. I know nemu64 is good for dumping the rom and disassembling it. Studstill actually gave me a link to a tutorial on doing this. I'm one of those people that lacks the time and interest in whole heartedly doing any of this but I'd be glad to help out when I have the time. I don't feel like hunting for documents and datasheets or pulling out each hex instruction and/or converting anything, but if someone gets their hands on the assembly code and the instruction table, I'll gladly go through it and identify subroutines and what does what.
Simply because its debugger > PJ64's by miles. Sad thing is, its emulator core is faster too. The only reason it uses more cpu is simply because it never implemented a frame limiter.
http://en.wikipedia.org/wiki/MIPS_instruction_set
Depends. If the game is using actual text, it's as simple as changing the hex. Some hex editors let you type in ascii, so that's very easy. I think smashbros uses pictures though. It's not impossible to change, but certainly harder than changing text.Wow, that Nemu 64 is pretty cool! So you can actually change the Hex codes and it has some effect, it's awesome!
I will experiment some stuff today and I will update if I manage to do something cool
PS:. Would it be possible, for example, to change some Text in game via N64 hacking? are there any limits?
Do they really do a checksum of the entire rom? Or is there an initial value read that is the length of the rom so the processor knows how much to read and load and how much memory to allocate and its just a matter of updating this value to the new length?
The checksum is only a certain length. I forgot how much, but it's not that big. Also, a lot of files use alignment, so there's almost always extra space. If you notice, N64 roms are usually exactly 8mb, 16mb, or 32mb, but if you look in hex editor, you'll usually see some empty space at the bottom. What's interesting is that the PAL version of SSB64 has 32mb, yet a good chunk is empty.
When you are editing these roms, I'm guessing you're editing the hex instructions as they are and then attempting to run it again? That could run you into these issues of the game reading things incorrectly because its all shifted. What should be done is the whole game disassembled back into its assembly code, then the code edited, run through an assembler, and then loaded. What happens is, when the code is assembled there are loops that are unrolled, jumps referenced to specific locations in the instruction memory, precalculated register and fixed values, etc. that when you just edit hex code or insert a new hex instruction at run-time, you are interfering with what the machine expects to execute. If it assembles and says at instruction 0x1A4 execute instructions 0x1B4-0x1C0 then return to 0x1A8, well if you've inserted an instruction that shifted everything down, the instruction at 0x1A4 saying to jump to 0x1B4 isn't updated to account for the shift to say 0x1B8. Thats why inserting instructions or removing them at run-time is a bad idea, while manipulating them isn't as much. Also, has there been any luck with figuring out how the interrupt handlers work and what registers they update?
I usually just hex edit. It is a hassle erasing instructions. Lol if I was solely just changing instructions, then LemASM would be more convenient, but since I'm also changing data and searching for data, Hex editor is more convenient in some cases. I have a quick MIPS to hex encoder anyway. I need to implement FPU instructions though, but that can wait for when I actually get serious with this. I've lost interest tbh, simply by the fact that I can't get help from very many people. I feel like it's time for me to move on, which is what I'm doing. I might as well pursue more ambitious goals. I usually just replace instructions. Like I'll NOP out conditional jumps, for things like Hitbox mode check. When using a recompiler cpu, NOP's usually generate no instruction anyway lol.
Fortunately, finding the specific data actually isn't hard, once you've found the location in RAM. All you have to do is simply search for a specific value.
It's refreshing to see someone agree with me on this issue. People think I'm wrong, but honestly, anyone with an IQ >= 100 can do it. They just lack time, patience, or interest. For me, time is a big issue. I think motivation is the main issue for most people. People may say it's too difficult, but a good amount of them have not put much time into it. If you look at other n64 games that have been hacked, you'd see that it's not impossible to even achieve ambitious goals. Even I would have never imagined a SM64 multiplayer hack! There's just not enough people involved in this scene.
dpw
is a programmer. That means there's a better chance of him accomplishing his goal.
All right Mr. Humble. Didn't realize I needed to spell it all out for you. You should be able to find a Nintendo Developer's Manual on the internet that has details about the code. You could also probably find technical documentd from the chip manufacturers themselves. I figured you knew how to do that because that's how people read assembly.
Thats exactly what I said I wasn't going to do. I wasn't going to go google searching and digging around the internet for the documentation. Thats what you are for as evidenced by the link you posted.