Відео

In an ecosystem where people generally hate object oriented programming because they've had bad experiences making structures before they know what they need, it's nice to see good videos explaining how to do it better!

31:24 ffs

if i may ask why is the unit vector in x axis sinf(RA) and y axis cosf(RA) shoudn't it be opposite of what it is.

Say a specific star is at 'sector (0,0); offset (0,0)', how does the program determine that star is still the same star at eg. 'sector (7,11); offset (X,Y)' when drawing the game? I don't understand how it maintains accuracy when calculating the seed from the sum of sectors and offset. How isn't _that_ star from the first question a totally different star when calculating the seed at a totally different sector and totally different offset? Dying to understand. Does it have something to do with limiting the significant figures to 0xFFFF, or something else pertaining to bitwise, or something in the rendering part after 'if (star.starExists)', or a combination of all of that? Goodness me! Thank you 😆

I don't understand at all you went over everything so quickly not only I understood nothing program is also broken. The view transformation does the Y rotation (yaw) but when I try to move the camera the Object itself moves along the X, Y, Z axis not along cameras X, Y, Z axis. now I'm stuck at this part of the code for a week unable to proceed any solution I try does not work. I wish you did not go over everything so quickly in the episode. (Edit: I SOLVED IT! Apparently when i defined my Y axis inverted so the last row of look at matrix should have been [T.A, -T.B, T.C] and definitely not [-T.A, -T.B, -T.C]

for anyone using c++11, when adding the w field to the vec3d struct, you may have to also add a default and custom constructor so that the vector methods don't throw an error when returning an aggregate initializer for the struct

I understand every single thing that you discuss in your compiler videos, but I know that I would never be able to implement said things on my own. And I’d feel like a total fraud if I tried copying your code just to end up putting it on my resume. This is my dilemma as a programmer. I love your videos. Any tips for this issue?

wtf am i watching

Why? I want WHY and HOW

What is this library ure using? Some graphics library?

Man, you gotta be young indeed (or in the opposite end of the age spectrum, in which case, respect) to not to know what midi is, ha ha. Banter aside, thank you very much for this, as someone who grew up with many older computer games playing midi (well, really even the NES and other such retro consoles used midi), it's interesting for me to finally look into what the code actually looks like. Ik ik, even games nowadays use midi format, only the quality of the instruments have changed. I'd imagine at least the code of midi nowadays compared to an NES game's midi timing would be different, in much the way versions of C++ are different (but somewhat compatible) from each other, is that correct or is that wrong? Anyways, I always love your videos, even though I barely ever dabble in programming (because I just can't wrap my head around it xP)

Alas this code no longer works for visual studio 2019 or 2022 :/ I love the project and the explanations but with recent changes to the c++ language ...

Are you planning to add line and character counters so that the error reporting can give the exact location of an error? seems like a very simple addition that provides a nice feature many compilers have.

insane 💀

I always thought I had to be genius enough to come up with this only using my head, now I realize I will never learn if I continue thinking like that. Thanks man

love the statement at 55:12 thank you for saying it

Hi i tried following everything you did and i cant even get the rotation right. Im trying to figurenout what im donng wrong watching this video over and over again lol

*Thanks! "OPERAND" though.*

You t-shirt is so cool! I want one! :)

anyone using a linux system and the SDL engine, you are going to have to modify the GetColour method a bit. The CHAR_INFO he uses here is for Windows systems. To work around it, I just made the method return a struct that contains the two data types that are needed (short and wchar_t) and everything worked fine.

I´ve tried this for so long but i keep running into an issue where my player collides with a rectangle for 1 frame and then falls through it like its not even there, im entirely lost on this

I'm not quite sure where I messed this up, but i have a "String Subscript Out of Range" error when I go to run it. I stopped around 16:00.

Incredible video. Please make more videos about this language, please!

Thank you. You just gave me the idea of adding pixels to my custom vector class. (eg v+px or v+=px)

my sensei

the system pause comment ☠

What about if the data you need is within a struct within the C++ file. How would you reverse the roles of grabbing info from your C++ file to the lua file instead of lua hosting the info. I have a struct called GameData in C++ and I want to just call like player.getCurHp to get the HP from the GameData struct.

9:20 my hungarian ass was real confused for a second.

Great work mate. If I had existed 10 years ago I would have had an easier time writing my compiler in college. I’m glad creators like yourself are out there.

really great video

Don't worry, short form or normal form yt will inevitably show your video multiple times to the same people for no good reason.

How was first compiler compiled ?????

I know you’re a good person because you put opening and closing braces on their own lines.

OK ..i agree your tokenizer work well and seems that produce rock solid array of tokens ..or at least array of UDT ...so next step will be parser i guess..it is kind of hard to follow allthis because i dont use C++ i find is hard ... can you btw explain how function with parms can be called multiple times in a recursive call i mean how to 2 or more recursive calls know which call is already executed ,,thanks

You always upload exactly what I’m looking for at the perfect time!

I would like to point out a few things I would do differently: 1) Instead of Finite State Machine you could've just have a lexer class with a nextToken method, which would peek a char and decide what to do, for each variant just call a blocking function that returns a token 2) Maybe this is to keep things simple in the first episodes, but error handling with exceptions... In a programming language you'd probably want to get all errors at once (multiple error reports). So I'd store them in a vector. Note: This may not be very applicable for lexer, but for parsers error recovery is a thing. 3) Indexing char iterator with zero. It's a valid approach, but if this iterator was a stream directly read from a file (or simpler - linked list or set iterator), this probably won't work. Not all iterators implement indexing 4) Considering #1 and #3, I'd not collect tokens into a vector, but rather parse them immediately. This gets rid of memory and performance overhead and to make parsers easily you'd normally only need one token lookahead (peek a token and maybe consume it) 5) Parenthesis - as well as checking after the loop, you really should check for the count to be positive in closing parenthesis, so combinations like ")123(" are not accepted. But I would probably do it in the parser 6) Parser (more related to previous episode). I'd make a recursive decent one, it's normally more applicable for programming languages Yeah, this sounds kinda harsh, but I don't want to hurt. Just pointing some stuff out :)

I've made compilers using Flex and Bison, but this is very interesting. Learning the craft from scratch. If you ever write a book about (game)programming I'll definitely buy it It may be a nice idea to add some learning order in your video's

I am really impressed with the teaching style and choice of difficult but important topics. Any chance you will try automatic differentiation (mainly applied in neural network training)? This is also kind of difficult but also interesting.

BADMAS(বদমাশ) in Bangla(বাংলা) means RASCAL in English

I was looking so long for this

Just spent the day going over your tutorial, using C and SDL, and its brilliant. The projection part reminds me of the code I was writting for a Raycasting demo, a few years ago.

Thanks for the video! It really motivates me to do my job =)

Incredible next le lexer?

Seems fitting to call the language OLC++; OLC# if one feels maverick.

It's plus, MINUS, add, or SUBTRACT. Never heard of "TAKE". Yes I live in the UK. I'm English. I was born here.

Did I miss the bit where you explained why you use "digit" as a synonym for "character"?

this made me realize how unclever, stupid, and genuinely worthless i am. ive never organically developed anything without several resources, websites, and other people's code. this is natural selection in action, i am not cut out for this world at all lol.

太好了，这是我一直等待的教程。感谢

your videos make me very happy

Excellent video as always! Loving this series :) May I suggest you check out std::bitset for the look-up table?