Making a Game With C++ and SDL2

Making a Game With C++ and SDL2 - GMTK Game Jam 2021

A year ago, in my "Learning SDL2 in 48 Hours" video, I used the 2020 GMTK Game Jam as an opportunity to try to learn how to use C++ with SDL2 (a low level audio, input, and graphics library that you've probably heard of). In this video, I attempt the challenge again, for the GMTK Game Jam 2021!

---Chapters---

0:00 Intro
0:29 Setting Up SDL2
0:45 The Theme (bruh)
1:11 My Secret Plan...
1:34 Entity & RenderWindow Class
1:46 Drawing a Sprite
2:12 My Game Idea
2:37 Initial Prototype
2:55 Prototype Code Explanation
3:39 Prototype Art
3:49 Tiles & Collisions
4:05 Collision Code Explanation
4:23 More Art & Directional Indicator
4:34 Level Saving/Progression
5:17 wait frick
5:38 Creating UI
6:07 DESIGNING LEVELS FAST
6:40 Sound Effects
6:47 Finishing Touches
7:08 Secret "Feature"
7:33 Conclusion

---Music (in order played)---

"il vento doro" - JoJo's Bizarre Adventure: Golden Wind

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[_Guigui]

I love how your game was so good it decided to take the entirety of the available ram

[Tantandev]

Idk why but watching people create stuff without game engines is always oddly satisfying

[nishantmogha]

Memory leaks could be a really good theme for a game. Just finish the game before the game crashes, or worst your computer crashes.
At the end the score can be calculated based on the total amount of memory leaked throughout the game. The least the better.

[Dorbellprod]

I haven’t yet seen anyone talk about your game art, seriously, it’s very clean

[barj]

Dude you're gonna have to teach me how you always get memory leaks in your games! I've always wanted to implement memory leaks but don't know where to start :(

[SummonerArthur]

You know this is just BEGGING to be ported for the nintendo ds, right?

I mean, two screens... Stylus...

[joshkanyinda]

I love that you included the actual math in these videos. I try to pause and think how it works in a math equation.

[SoicBR]

Most MBs of memory leaks per second any% speedrun

[CunningBard]

Polymars: * hears the theme *
Polymars: My disappointment is immeasurable and my day has been ruined

[giovanniluddeni]

The actual friction law would have the friction to be proportional to the velocity (maybe plus a little constant to lower the final tail of the movement). I think that way the movement would look more realistic

[lolliepop]

I havent looked at the code, but seeing it from just this, most likely you are passing a texture by value instead of a reference, this makes your game building duplicates and pushing the memory pretty quick. Been there ;)

[devilxnuxify]

4:34 Maybe it would be nicer if you store level configuration in a JSON file then deserialize them on the fly using libraries such as nlohmann/json or similar. Then you don't need to painstakingly hardcode every level. And by using external data it would be easier to expand your game

[vurtua]

I literally love your use of graphics to visually explain how your code works. 10 outa 10

[MaxforceMaxforce]

"So basically I wasted 48 hours" Ahh yes, the life of coding

[Goodgis]

Another banger as always. Great work, Dude!

[LeeG]

Well done. Amazing job. I wouldn't stress too much about the memory leaking. This is how we learn and become better developers. Keep going!

[cobblebrick]

Here's a tip:
Use a debug flag with the compilation command and then use a program like valgrind to analyse the executable. This'll help you track down memory leaks

[StrongLoneWolfPack]

Was getting into c++ myself finally and in a breif handful of frames you solved my compiler needs, thank you

[GamesBySaul]

Great video! I really need to read into memory leaks more, and discover how not to do them, as I've just started doing more C++!
The game looks pretty fun and cute though! :D

[WannibeManisha]

Really liked the game concept. Too bad about the memory leaks but it's definitely a learning experience! Great stuff!!