How can the N64 handle fast moving objects? | Portal64
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- เผยแพร่เมื่อ 30 ส.ค. 2022
- In this video I show how I got the physics engine working well enough to allow objects, and the player, to fall forever from a portal on the ceiling to a portal on the floor.
Thanks to my brother, Joseph Lambert, for helping me edit the video this time
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This is very impressive, the fact you were able to make portal in n64, while some people are still struggling to do that in goldsrc
goldsrc is not open source so its hard to do major modifications
@@golarac6433 And neither is the n64. But I assume there's a lot of community made documentation for it. Not sure if that's the case for goldsrc.
@@golarac6433 but the SDK is
It makes absolute no sense for the N64 to be "closed source", do you believe this project is made on an already existing engine in the console? This game was literally built from the ground up and its developer can do anything with it, which is not the case with goldsrc lol
@@SheepyChris lol, n64 is not documented, most of what people can do with it is based on reverse engineering the system
4:45 "Sorry if you were here for a game update and instead were hit with a math lecture" It's the true James Lambert experience! XD
I'm absolutely here for both! some channels make joke about skipping the maths and then skip them but then the videos get less interesting...
I'm pretty sure this is the definition of "I came looking for silver and found gold."
He didn't say that. Your quote is wrong.
As a game developer i can safely say while creating a game you need to be able to write (some times difficult) calculations. So game development can math go hand in hand
I'm taking electrical engineering classes at my college, so trust me when I say that your lectures are very easy to follow, interesting, and entertaining! Not to mention that your presentation is very clean and clear, so I would honestly love to see more along with the future updates! (perhaps some VERY faint background music might also enhance them)
Also doing Electrical Engineering, and my maths lectures were so bad I stopped going and just taught myself the content.
IT engineering classes here
cant agree more
michigan tech?
@@sirspamalot4014 CS classes here, my lectures were so bad I stopped going and never learned it because I'll never use it again. Passed that stupid theory class, that's all that matters.
Naval nuclear electrician here, can agree
7:18 - the original game has two mechanisms to deal with this. The first is that when you go through a portal which significantly changes the concept of "up", the game will force the player to duck for a few ticks. The second is a complicated mechanism called FindClosestPassableSpace which is responsible for making sure the player never gets stuck in geometry around portals (there's a good video by UncraftedName if you're interested) but the first thing might be sufficient for this bug depending on some details of your collision and the size of your hitboxes
That sounds helpful. Thanks
Please never stop providing the technical explanations. I find this stuff absolutely fascinating and it's wonderful to have it broken down with visual aids and applied to a game.
Please stop providing technical explanations. It is absolutely NOT fascinating nor wonderful. Visual aids only please!
@@googleuser4720 :D
I really like this. I wonder what would Kaze Emanuar, or even Valve themselves would think about it.
I'm hoping Valve thinks, "Wow that is cool we should let him finish it"
As long as he doesn’t try to sell and only offers it for free then everything should be fine. Value only cares if you try to sell things for the most part.
@@illpunchyouintheface9094 well gmod exists although I guess that's just a compiler game thing
@@james.lambert Just a question, what do you think about binary space partitioning (.bsp) and how would you implement it? The original Quake was from 1996. Quake had a world editor and it allows lightmaps and radiosity baking after compiling it. Is this possible on the Nintendo 64?
@@TrekDelta The Source engine uses BSP, lightmaps and radiosity baking.
As a long time game dev I really enjoy seeing videos about old hardware being given new life with "modern" projects. And it's fascinating and informative seeing the technical breakdowns and problem solving in such an elegant way. Way to go!
I wish there was a term for it. There was a guy who made I believe it was a game boy game. I’ll look for it because their breakdown was great
It’s from “morphcat games” and it’s how they made a game for the nes
@@Mawyman2316 hi its been a year but this kind of thing is generally called a demake
@@adora_was_taken Hello, not quite. Any time you make a game into a lower bit artstyle its a remake. I am talking specifically about games made compatible with retro hardware. There was a 4 player coop mage game made for the NES that was awesome too. Its not really a rom hack but its basically a rom hack if you wanted to get closer to a good term.
Looking great so far. I'd suggest putting a slight white noise in the GLADOS voice clips so they sound less compressed than they actually are.
I think it sounds like they're just clipping a bit.
@@C.I... I think it sounds like sound it sounds like sound it it sounds like it like like it sounds like sounds it sounds like sounds it like
@@windowsxseven You okay bud?
@@jeremiii6523 feeling kinda drowsy
As a sort of dithering or what? I would presume more noise would worsen data compression, but I'm not clear on what you're aiming to do.
I want MORE math lectures. I love knowing how you squeeze the most out of the N64!
I’ve been loving these update videos, its nice to see how much can be done on the N64!
I love seeing updates for this project, and can't wait to play it for myself!
You can play this current build now, there's a link to the github in the description
@@Zyon134 really? Awesome! Thx, dawg
When the full thing comes out I learning how to put data on a n64 cartridge
@@Streetcleanergaming That's my dream is to have this port on a physical cartridge to play on my N64.
I love the progress! It's looking really good and it's wonderful to see you continuing this amazing project!
I HIGHLY appreciate you going into the detailed specifics! Best explanation I've ever seen of Gilbert-Johnson-Keerthi distance algorithm used to add rudimentary models for physics calculations.
You're so unbelievably clever and creative keep up the good work man! I'm so amazed by your progress.
I'm literally on the edge of my seat waiting for new updates from this project
And I love hearing about the math
Coolest video yet! Awesome visual on GJK. Instantly clicks to what you had described in your first physics video.
Please keep the technicals coming!
Amazing explanation of GJK, thank you for informing me of its existence!
Absolutely love it that you’re working on this project, keep it up!
Imagine if Portal 64 actually existed back in the day.
Would probably have been the greatest game of all times.
Is it not already the greatest game of all time?
@@JoBot__ true.
they wouldn't release into sale vision
not with all those glitch we'd have to encounter X'D
@@bennypika4976 But it's pretty easy to just get a focus group to test the game, then patch the bugs.
Phenomenal progress! You're doing an amazing and faithful job here! These updates bring me immense joy, thank you for keeping us up to date! I loved the graphical examples and mathematical expression demonstration. You did a great job explaining why it's so important and how cool and elegant the solution is! You and this project motivate me in my projects, thanks!
Great project, you're killing it. Also great job on the animations when explaining stuff. It's Minkowski btw, there's no Z there lol. You kept saying Mizowski or something
THANK YOU! I'm glad someone else noticed it!
He gets it almost right the first time he says it. Sounded like Mingowski to me but the subtitles got Minkowski. Mizowski all the way after that though.
Goes from minkowski difference to mizowski difference to mizowski... sum?!?!
@@r0zemary that's actually correct, you can say either sum or difference
I love hearing about the technical parts of making something like this! Really shows all the work and cleverness it takes to do a port like this.
Binge watched all your videos. Saved this one for last. Definitely the best one. Super impressive all of them!
Your videos are so high effort now, this is really great! I love your visual explanation of support functions
I gotta say, you have an awful lot of ambition and self confidence in your own programming skills to take on a project of this scope and difficulty. It is truly impressive and I'm really enjoying sitting on the sidelines and watching it take shape. Given I have little experience with the N64's architecture (besides a bit of poking around with MIPS/N64 rom disassembly in IDA Pro), especially in regards to the reality coprocessor, I don't have a very good grasp of how big of a project this actually is, but I can only imagine that it is a bit of a Colossus. I wish you luck with the project and I can't wait to see what comes next!
Love your channel and project! You're brilliant! Thanks for the content! 💜 ✌️
Math is not my field, but it's always interesting to see the solutions you come out to resolve the problems, and the explanation wasn't hard to follow. Keep up the good work!
Amazing explanation and development update! Haven’t seen your videos before, but this project looks great and no trivial task!
Look forward to seeing your work and progress in the future
I watched this out of curiosity and got a brilliant lecture as a result! Thanks!!!
i dont care about the math lectures your visuals alone make them intuitive and fun to learn about
I love the explanations, your visuals are great! This project is really shaping up nicely.
It's honestly surprising how good it looks.
sup disco mario
This is awesome. Please keep up the great work, I've learned a lot from this series!
What an awesome project! Love the math lecture, it makes for a very complete and satisfying update video
TBH I came for portal, stayed for the deep dive into your engine intricacies. Keep up the technical deep dives, they're great.
The theory behind all of your implementations was very well communicated. Impressive work!
I was trying to implement this sort of collision detection for my game on my own, but the process of sweeping parallelepipeds proved too difficult. Thanks for highlighting the algorithm, I’ll definitely have to take a look at it
that collision technique is genius! i once thought of doing stretching colliders to solve that problem but had no idea how to actually implement it, thanks for sharing how it works.
Portal has a way of stopping the player from infinitely falling through portals by simply nudging them slightly forward untill they get out of the loop. It also counts as a movement assist cause in portal 2 the portals kinda sucks you in.
Very inspiring. Please keep up the great work!
been waiting for a new video on this one :D love that you're able to pull this off. you should add developer commentary to the final version if that's possible, like actual portal.
the editing in this is really good
Looks great! I've really enjoyed following this project. I definitely want to throw this on a cart and load it on my own hardware!
i like the method of making stretched collision mesh! i really love your videos and im glad they got recommended even though i didnt subscribe since last portal 64 video!
Best episode yet! Great explainer and great graphics
You are _very_ good at explaining complex technical concepts. I have a generally good enough understanding of programming that I can conceptualize a lot of the concepts you talk about in this video, but the way you explained this GJK stuff was such that you would introduce a concept I had never heard of and could not understand, and then visually and narratively explain it such that I quickly grasped it and was able to follow along. It's a small wonder you took up game development; that combination of skill sets would make you a pretty good candidate.
Being a developer and a 90s n64 kid myself, your videos are like Christmas presents!
I'm so invested! I love learning about stuff like this! When you get done you need to release the game file for us to play it. I would love to run it on native hardware.
I don't know much about math, but I can fully appreciate what you're doing. Building one of the best puzzle games of the last few generations for one of my early childhood consoles is top notch entertainment, even if the shapes overlap and cause my brain to tremble at all the learnedness.
Thanks for sharing and with some deeper level details and process. Very inspiring craft.
Am absolutely loving watching this project progress! Extremely impressive, seeing Portal working properly on an N64!
Well damn, dude. That's my effing mind BLOWN!!! Absolutely smashing work, man. Seriously, I don't know the last time I've been this impressed by a port to the 64. It looks amazing, G.L.A.D.o.S. sounds just as good as ever! Seriously man, this has me absolutely tickled.😊
Very well done, sir. I love the project, but I love the explanations and animations even more.
This is really cool! Can't wait to see how this turns out.
this project is amazing and your explanation really interesting and useful
keep it up!!
Congratz on getting it to work with any shape!
Amazing as always. This really does look like footage from an alternate universe
This is quality, maths lecture and all. I wish my maths lectures at uni were this well presented.
TNice tutorials is one of the best intro soft softs I've ever seen. The entire basic worksoftow with no B.S.!
I'm blown away. I mean I am really impressed. Absolute top tier talent.
Love this, hope the idea of releasing this as mod on steam won't be scrapped
Cool stuff! that collision method seems like it would be expensive but I guess since your not brute forcing anything it ends up working out pretty sweetly
Thats really really awesome, keep it up!!
I understood none of this but it's still so awesome to see, thanks for sharing!!
this project is my new favorite thing ever, i love old N64 games, and this version of portal feels so beautifully retro, i love it :-D
This math lecture has been very useful. Thank you!
You are a genius. I love this project so much. It now even works on a mobile emulator.
Amazing work! Super impressive!!
woah, this project is really cool! I'll be sure to check it out on an emulator soon
I was so pleasantly surprised to see a math lecture in a video I thought would just be a progress update!
Dude, this is epic! Nice job! :D
omg your videos are so underrated you deserve more subs :)
I'm genuinely looking forward to this being done so I can play it on my rom cart
I love technical explanations!
LOVE THE MATH LECTURE. MORE PLEASE
Very underrated. Thanks for brilliant content!
Wow, great video with nice explainations! :-)
Don't apologize for beautifully animated math magic. I think there needs to be more of that awesomeness on YT
Excellent explanation I actually I've always wondered about how 3D collision detection works
Loving the progress this is getting! One thing I'd suggest doing now is adding lighting, similar to games like glover.
Very cool! I really hope to see the full game demade someday.
Dude. What. I love this project. Thank you.
Can't wait for this to be released!
I’m a structural analyst and I know how difficult it can be to get Ansys to simulate contact, so I have always wondered how video games do it. You explained it really well, and I love that part of your videos!
I want to play this game !! Keep the good work
Make sure to keep in some of the more crazy rare bugs, someone's gonna try to speedrun this
This is the single greatest porting project I've ever seen, and your videos are incredibly insightful. If Valve don't poach you and release this as an official cart, so help me I will write GabeN a very stern email...
I remember reading about this a long, long time ago. The part that was never clear to me was how to compute the Minkowski difference in an efficient way in real time. So If I understand this video correctly, the trick is that you don't compute the whole shape but only what you need? Definitely appreciate the math lecture, keep 'em coming!
Correct me if I’m wrong, but the fact that the support function is “linear” (or at least the dot product used to calculate it is) makes the support function of the Minkowski difference a function of both support functions. There’s a very good video explaining GJK that I saw a long time ago, which goes way more into detail.
Don’t apologize for the math, it’s super interesting! It’s how you got everything working and It’s cool to hear how you got to that point
We want more math lectures. Great content. This is what I want in my life.
What's crazy to me is there is no reason to make this other than PURE passion. That's dedication
This is so cool.
I hope you will continue trying stuff like this once you feel done with Portal.
I think Superhot might be kind of interesting, but maybe not as interesting as this.
Or a physics sandbox thing :o
GMod 64 lol
@@DWal32
I might not have understood all of the math lecture but it was neat!
this is amazing, please continue this project. is is so awesome...
it seems like this is going fantastic so far, I feel like maybe some walking/footstep SFX while moving and an interaction sound (when grabbing and holding a cube for example) would go a long way as far as making it seem a little less stagnant, also I think that an impact sound whenever something/the player collided with a wall would be great if thats possible to implement with the restrictions,
I'm making these "recommendations" specifically for the audio since the current state its giving me more of a videogame creepypasta vibe than it really should, sorry if I'm asking for something impossible, I'm not exactly calculating the technicalities here but I hope my input helps!
it's fun seeing people figure out how these things work when you already know.
So yeah, that collision problem is called tunneling and what you're describing is a "swept volume test"
this Is so cool best of luck to you!
Very interesting! I like the explanations.
Too fucking Kool! Please keep going this is magnificent!!!
This reminds me of watching a code parade video. I hope at some point there's a collaboration
Three Blue One Brown level explainations in an N64 video. Life is complete.