I ain't gonna lie, I almost lost all hope thinking part 2 will never come. I am so happy now, literally out of this world, this is amazing.

Literally just watched part 1 yesterday, this is a miracle.

I am waiting for part 3

I'm going to watch it right now! First part was amazing. Thanks for sharing! 😊

This "Let's Program Doom" series is so awesome! Thank you a lot. Cant wait to see part 3.

I lost hope 6 months ago when you didn't upload anything. This is an absolute miracle!

Yesterday I was waiting for part 2, Now am i am waiting for part 3 already!

my day has immediately become 5 times better

It's like watching a Captain Disillusion video but for programming + cats

That sure was revolutionary back in the 90's... still amazing how simple it is. I'm glad I foud someone explaining it with the only and best C language :D

this is awesome, so much cool stuff in here! Can't wait for part 3!

18:41 Is it any coincidence that the multiplier you used is so close to 2pi or tau? with the amount of sin and cos functions used, I wouldn't be surprised to see pi crop up here!

Omg, i can't believe this video just released! Im waiting for this for sooooo long, more than half a year

I've been looking forward to this with an unreasonable level of excitement! Keep up the amazing work

Wow! We need part 3!

Nice! I've been waiting for part two. Thanks, good job 👍

I haven’t started the video yet but wanted to say I haven’t been this excited about a new KZfaq video in a while!! Thanks for making a part 2! Love your channel btw. A gem of KZfaq

I've been looking forward to this for months!

One of the awesomest things on the internetz. Thank you. Didn't start on this yet, very busy with a project, but as soon as it finishes I'm going to dive into this and make stuff.

I think it's wild you have the level move around the player. That's just so cool.

yo sick i love your videos. i love love love your simple computer build with the counter IC. thats so cool that you can actually make a basic computer/cpu out of just those chips

This is one of the best, most fun learning channels on youtube

I looked from start to finish, with your help I was able to create an engine). waiting for part 3

THIS LOOKS AMAZING, I haven't finished my game boy game but I'm really twitching to start a Gameboy advance game with this engine

wow! i learned a lot today! I'm still at 50% Raycaster 3 but I'm really really looking forward to this series! I'm especially interested in the BSP stuff (especially how to generate the tree for the level data), it always fascinated me...

OH MY GOD IT CAME OUT AND I MISSED IT! THANK YOU! I cant believe how cool the stuff you make is! WOW!

really cool seeing how such common concepts nowadays are programmed from scratch

This is amazing! Things like this take alot of time so take all the time you need to finish the other parts

THANK YOU SO MUCH I HAVE BEEN WAITING FOR THIS!!!!

very nice, love this series so far

this video is amazing! i wanted to make a doom-like 3d game after being subjected to 3 days of working with raycasters this being so simple is such a relief

this is actually really cool and useful, i will share it with my friends

Awesome video! Thanks for this series. It is one of the best on the subject.

Your so awesome man I've been watching you since your gba vids

Omg, thanks so much for making pt2

OH MY GOODNES ITS FINALY OUT!!!

Thanks for this second part it is so amazing like the first ❤

Great! I feel that this part 2 will be a tougher one to convert in Java... 😅

I'm ready for part 3 haha!

YES I WAS SO EXCITED FOR THIS OH MY GOD

amazing video! love the editor and I cant wait for Part 3 :D

Currently stuck trying to get my textures to not look like TV static when i put them on the walls XD Hope there will be a part three by the time I finish, if its too much work though I understand and am still super thankful for this awesome 2 part series. Forreal best tutorial on KZfaq.

HE LIVES

Ooooh part 2 is out. Nice!

OMG life made easier!!! im so loving these tutorials!! (does mean im going to have to feature creep on a project tho! LOL -- this is amazing!)

Can't wait for part 3

incredible man. doing gods work

Looking forward to part 3!

I like the in-engine editor, a great condensed minimalist display bar. Nice to see the faux view pitching technique get some love. That fog like gradient was something else, very approximate to polygon fog clipping.🙂

Really awesome video!! Thank you!

Gosh, I've been seeing this channel for a while and I thought I was subscribed to it. But, now I am. This channel has been having some great game development content.

First! let's go boiiiiis

This is so cool!

Thanks for this video! I just finished the first one and made a glitchy hexagon prism.

Great video! Really fun to follow along as you build this. From your texture mapping code it looks like you are linearly interpolating on the X axis which will cause it to be non-perspective correct. Maybe you could update this to perspective correct texture mapping in your next video :)

At this point, you've just made Duke Nukem 3D lol.

This is Very cool! :)

Can't wait to see if you continue your raycaster engine. I tried making the maps bigger but i ended up having a procedurally generated hellscape that went to infinite somehow.

I think I found your "Really nice formula" for calculating the surface tile placement and it's basically yours with the last two variables changed: for "rx =" and "ry =" just change your last two variables to the following: (P.y/yo*tile) and (P.x/yo*tile) Or as it looks in my LUA version: rx=fx*math.sin(math.rad(pA))-fy*math.cos(math.rad(pA))+(pY/yo*tile) ry=fx*math.cos(math.rad(pA))+fy*math.sin(math.rad(pA))-(pX/yo*tile) The (pY/yo*tile) and (pX/yo*tile) works to lock the surface textures in place even while moving. I don't know how as I was just poking the code until it did what I wanted. I'm sure you've probably hashed this one out (or someone already mentioned it) and I look forward to the next tutorial!

Twitter mad? I sleep KZfaqr cancelled? I sleep 3DSage uploaded? **Real $h!t?**

I ended up programming my own level editor and save load system for my gamemaker port I did for fun. I also modified how the level data works, I swapped to using points, walls, and sectors rather than just walls and sectors. That way I can draw points however I want in the editor as walls are composed of two points, texture data, and color data. This also brings my port closer to how doom actually acts as doom uses vertices, linedefs (and sidedefs), and sectors

I should've paid attention is school. My brain is gonna 'splode watching this math stuff.

Cats + programming + DOOM = Perfection

legend says that never its going to be part 3 im coming from the future

I love ur work!!!

Its insane of what these programming language's can do.

Hey man really love the content! Hoping one day i could get the level where you are at making 3D projects in the GBA :D

I believe that 6.2 number you came up with is pi * 2 or acos(-1) * 2

cant wait for the quake series

YES

Thanks for uploading !! Super awesome tutorial! Where can I get Grid2D from?

Damn, nice job! I will download your engine and try to build simple game on it! :D

Very nice work.

I gave you my thanks. This is awesome content! Edit: There is a small bug in the texture mapping, if you check around 14:47, the texture's "dirt boulders" stays the same width on the whole width of the wall, with no perspective applied to the hstep. The more distant the texture should have thinner boulder, the hstep needs to take the wall height ratio in account...

Please make a part 3!

I'm making a raycaster in lua using the love2d framework, finally managed to make a single ray shoot! I'm already looking foward the BSP

Oh Jesus plz part 3

Me, a drop-out from CompSci who chanced into these videos while wandering around the internet and only understands about half of it: Hmmmm. _Fascinating._ I am, however, a doom mapper in my spare time, and at the end of the video you did ask for suggestions, so I have three: * The map editor doesn't seem to have a way to set different textures for floor/ceiling on the sectors or specific textures for individual wall lines within a sector. This is a feature of the og doom engine that goes a long way into making maps varied and interesting and since you managed to get the hard part (actually drawing stuff with texture mapping) down, it could elevate your engine as well. * Light levels! Doom had you set a lighting level per sector, with 255 being max and 0 being minimum. Fairly sure it just darkened all the pixels inside that sector by the reverse of that. Also something that makes maps more varied. Later you can even make light levels that change on the fly, for like flashing or flickering lights and such. * The little fade you did when you were demonstrating the floor rendering with flat colours. You could probably achieve a similar effect by applying a similar formula but to all three colour elements of the pixel while you are drawing the texture, since that, too, is just plotting colour pixels on the screen. If you really wanted to go all out, you could make these controllable parameters stored in the sector array, thus giving the map designer customisation over the fog within a sector, which can make maps more moody. Then again this would probably also call for doing the same to wall textures and we start getting even more complexity.

this is a nice tutorial also about your computer that you made does it have an microproccesor

Nice job 🙂

Idea: Use in-facing sectors as rooms, and out-facing sectors as brushes.

i love doom, i love ginger cat

Thanks so much!! It would be awesome if you could cover the quake engine one day :D

excellent series! part 3 please...?

Oh yeah that was something I wanted to suggest for any new sector based engines, 2D approximated leaning in FPP. Kind of like faux pitching but I think it uses column shifting of the whole window to approximate camera tilt, OG Star Fox was a pretty good example.😉

nice to know there are fellow java try hards/stubborn people in the comments who keep insisting on making things like this in java no matter how much they get discouraged and get weird looks.

let's fucking goooooooooo

Cant wait to play DOOM once agian!

If you release part 3 I will click like on every video you’ve released. Plz!

Hey, another amazing video, and t is really easy to follow, just please add some visual indications around 10:45 when the cut is a bit too late, and those casts to (int) appear late and is easy to miss out. I got my video stopped at a bit earlier point while re -typing and when i tested it it was not working, because I missed the cast.

Hello, would you mind covering the Grid2D programming in a future video? Covering as in coding it along with explanation, it would be really helpful! Thanks for all the hardwork, I wish this stuff was taught in schools.

very freakin cool

sickkk

The single space indenting is a baller move.

and now I'll port this to scratch :)

Super Doom Maker

Great tutorial! Fiddling with the code, that 60.0 that shows when calculating the rx and ry for the surfaces of the walls, is it related to the y offset of the walls? I'm asking because, when I doubled the game resolution here, those 60.0 didn't worked anymore, but 120.0 did. And I noticed that yo is related to the height of the window (yo = SH/2) so, when I've changed 60.0 to yo, it looks that it works now... Am I doing this right? haha

I kept forgetting to share the port I did in python lol. I figured out texturing on my own, but I never figured out how to get floor texturing to be performant, so instead I did solid color floors for sectors and did some level trickery to make it look better. I used Tiled to make my level editor, instead of writing my own (I did the same trick where you have to draw the polygons a certain direction because I didn't want to write code to check it lol). Didn't bother doing BSP or portals, so I just designed a level that didn't obviously break as much. No proper collision detection, but just enough to let you walk up stairs.

13:53 straight line running in a circle

PART 3 PLEASE