Pygame Framerate Independence Tutorial: Delta Time Movement

[@zyenapz]

Thanks for the clear explanation. I like that you show visuals and comparisons, they really help me understand why should I use it and how I can implement it!

[@CDcodes]

Glad to hear!

[@hardikchoudhary6845]

Holy-moly bro's content is making me jolly!

[@naointendogamesbr]

Hey Man! Thx so much, really helped me with my first steps.

[@CDcodes]

Glad I could help!

[@Froqqy54]

Nothing short of amazing. We all needed this hero!

[@CDcodes]

Appreciate it!

[@lovedeepbrar5950]

Superb bro This is the best video on frame independency

[@CDcodes]

Thank you!

[@NiGhTm4r389]

Thanks so much! Before I implemented this in my Adventure / RPG that I am currently working on for my Master's thesis, the velocity of my characters would shift when both were moving (one was faster when the other one was standing still and vice versa). This fixed it :)

[@CDcodes]

Awesome! Looking to work on a Master's myself next year, glad I could help!

[@bovfbovf]

Thanks for the upload Chriss!

[@CDcodes]

Thanks for watching : )

[@ЕгорМиронов-щ3п]

First, I wanted to write code like this to calculate that stuff, but decided to search on youtube. Thanks, man., you did it for me.)

[@CreativeSteve69]

Just found your channel. I'm working on a simple arcade shooter for my first entry to GameDev using Python and pygame. Been working on it for couple months and been stuck on a detla time error. I like how you explain things and showing visuals along the side. It's really helping me understand coding a ton. Glad to have found your channel.

[@CDcodes]

Glad you found it helpful! Best of luck on your game!

[@vinnn8694]

You almost sound exactly like SerpaDesign 😂 Anywaay very good video! Cut right to the point, appreciate it!

[@CDcodes]

Thanks! Haven't heard of SerpaDesign, but now I'm curious to check out his channel haha

[@eplusplus]

Thank you so much! This was exactly what I was looking for.

[@CDcodes]

Glad it helped!

[@kthegreat69420]

really nice video and you explain very good. Get him to 1K subs!

[@fuvusion]

I love the trick it makes a lot of thing less complicated

[@Ed-of2id]

thanks for the knowledge!

[@CDcodes]

You're welcome sir!

[@keremcd]

Useful tutorial, thanks.

[@computeroid6162]

Thanks a lot, cleared up a lot of confusion!

[@CDcodes]

Glad to hear that! Took me a bit to wrap my head around it too

[@vinhero]

This Video helped alot and i like ur demo ^^ Thank you!

[@CDcodes]

Glad it helped!

[@bosstareq9]

negl this was a sick video, even tho im not gonna use it in my NEA 😭

[@ayayalgueewe9361]

Thanks, it was really helpful!!

[@CDcodes]

Glad it helped!

[@ryzer5528]

hmm, its rarely to see ppl use pygame, kepp going bro

[@CDcodes]

Thanks! Been a little busy with school, but I do have more videos in the works : )

[@devendranegi2477]

Lol I am your 46'6' subscriber!!! Great tutorials.

[@CDcodes]

Thanks for supporting the channel!

[@mtbminibomber]

im his 22nd subscriber

[@Ilnur-v6z]

I've actually been having an issue that I think might tie into this topic. Basically, after a while of running my code, my window would get these very faint white borders around it and my framerate would become very inconsistent. There would also be some noticeable screen tearing. If i set my framerate to something absurdly high, as soon as those white border appear, my character wouldn't move right at all.

[@UnderArea51]

QUESTION: Is there a way to hard code a game sprite and then have them called from a class? For instance, code - draw a character like Mario, or a simple pixel character, (of 2 or 3 frames of movement in a sprite sheet - hard coded,) VS using png files, and then be able to call the sprite from a class, and move them about on the screen using keyboard arrow keys? Is this possible?

[@UnderArea51]

In Pygame. .. Thanks!

[@CDcodes]

Definitely. Checkout my video on spritesheets. You can combine that with the tile game tutorials to make the sprite move.

[@DeltaNrOne]

Thank you for this video, i am just learning python and i made a pong clone and guess what my pc did yup the pong ball went brrrrrrrrr

[@Kokurorokuko]

I don't understand the last step. Everything was working properly, wasn't it? Why would we need to add "target fps"?

[@CDcodes]

Thats for people who started a game but didn't have framerate independence in mind. It can adjust their physics so that it matches what they were previously aiming for. If you started your game and implemented delta time from the beginning, no need to worry about that step.

[@shadowgodthegamer5738]

Thx. Helped alot!

[@imraptorr1066]

everything stops moving when i added delta time, can you help me?

[@CDcodes]

Check if your delta time variable is zero. That would cause all movement to stop

[@ChickenDev]

Awesome tutorial!

[@CDcodes]

Thanks!

[@tordg1356]

you are a hero

[@Sunamii_studios]

Life saver🙏

[@towatch]

Thank man

[@vezpro6691]

Love it!

[@mtbminibomber]

I joined ur discord group. I didnt know you had one lol

[@CDcodes]

Just made it!

[@yourlinuxguy]

Flash banged!

[@lsk21kr]

**then velocity change enters the room**

[@lsk21kr]

meaning that you need to find the average value of velocity when acceleration is involved. Adding acc*dt to the velocity and vel*dt to the position does not give you the exact position at that point, but the position between that point and next point. And of course this difference can ruin your physics engine giving different output by varying framerate.

[@JacobMerrill]

nice work! You should try UPBGE fork of blender, it's like PYGAME on steroids.

[@CDcodes]

Oh wow, I'll have to check it out Thanks for the recommendation!

[@jesterlw]

Thanks man!

[@CDcodes]

Happy to help!

[@mannb1023]

for some reason because of how I programmed my game or something, multiplying by dt just makes everything super slow

[@mannb1023]

nvm i didnt watch the rest of the video lmao

[@CDcodes]

Glad you figured it out!

[@basicallybrand]

thanks

[@karsaimihaly]

Is there a chance this would work in plain python?

[@karsaimihaly]

@Jamin I asked this 6 months ago I don't even work with python anymore...but thank you I guess.

[@hillybankok]

@@karsaimihaly lol

[@MykacInk]

Nice video

[@CDcodes]

Thank you : )

[@naomi2801]

I love u

[@vaibhavpandey6640]

hey you sounds like kidscancode

[@CDcodes]

I actually started learning with some of his tutorials

[@hexagonalcat8480]

Thank you for the great explanation! But I've got a question. When I tried printing out dt for each iteration, I got dt = 97683152328.39076 for the first few iterations. Its a very huge number and I'm not sure what's causing this.

[@CDcodes]

Hey! Thanks for watching the video. I tried to recreate your problem but wasn't able to. If you'd like, you can share your script on discord and i'll take a look there

[@sodoi2756]

It this kind of method work for rhythm games?

[@CDcodes]

It will work for all games