Flappy Bird in 228 bytes

https://gist.github.com/gullyn/95b2ab9e465317f1d4e4607cf6e94205

by metahost • 6 years ago

254 33 6 years ago

gist.github.com

alblue• 6 years ago

The comments in the ongoing code golf have got it down to 205 bytes.

phito• 6 years ago

the 205 bytes version doesn't work well for me. Low FPS and it seems like the game resets even when I go through the holes

ehsankia• 6 years ago

Wow, when I first saw the link, it was at above 340 bytes. it has shrunk in almost half...

rasmusei2• 6 years ago

If anyone, like me, did not know what Flappy Bird is: https://en.wikipedia.org/wiki/Flappy_Bird

You control the "bird" (the dot). Click to ascend and fly through the approaching openings.

Kiro• 6 years ago

I mean, https://xkcd.com/1053/ and all but I wonder how it's possible to have missed Flappy Bird. It was the corona virus of its time.

Mayzie• 6 years ago

I mean, Flappy Bird was popular in late 2013/early 2014, nearly 7 years ago. If you’re a HN reader and currently aged 16 or 17 years old, you would’ve only been 9 or 10 years old at the height of its popularity. Somewhat reasonable to not know about it at that age, so it is entirely possible that some people on HN might not know about it at all.

jquery• 6 years ago

It was the corona virus of its time.

I wouldn’t go this far.

mcintyre19942• 6 years ago

I can't remember what the Twitter-for-tiny-Javascript-demos website is, but this would probably be really cool there if it can be made to work with their logic!

devxpy• 6 years ago

https://www.dwitter.net/

mcintyre19942• 6 years ago

That's the one, thankyou!

JosephRedfern4• 6 years ago

This reminds me of when I was an intern at an InfoSec company 6 years ago. At the time, they were doing some research into mPOS devices (though I wasn't involved).

They found and exploited a stack-based buffer overflow in the EMV parsing of a particular device, which allowed them to deliver a payload from the smart-card itself. To demo this attack, they wrote a flappy bird clone which was played using the number pad of the mPOS device. It weighed in at ~4k though, so positively heavyweight compared to this!

There's more info here: https://labs.f-secure.com/assets/BlogFiles/MWRI-Labs-BHUS14-..., with a video demo here: https://vimeo.com/89924160

antihero• 6 years ago

That was a good read! Would I be right in saying that given that the PoS is internet connected, you could create a payload that showed a fake pin screen in insecure mode, and just upload the card details and PIN every time someone used it? And deploy that payload simply by inserting the compromised card.

JosephRedfern4• 6 years ago

I'm not entirely sure that this would be the case for mPOS devices, as they aren't necessarily directly connected to the internet (many talk to a tablet or mobile phone via bluetooth), so you might need further vulnerabilities in the accompanying app to be able to exfiltrate that way.

MWR have done other work on standard EMV devices which probably ARE connected "directly" to the internet, so the situation you describe may be more likely.

I've always liked the idea of having a card that cause the device to behave as if the transaction had gone through successfully. Sort of like an AMEX Black card, but without the repayments.

Again, I wasn't involved with any of this, so take my comments with a pinch of salt.

ardy42• 6 years ago

They found and exploited a stack-based buffer overflow in the EMV parsing of a particular device, which allowed them to deliver a payload from the smart-card itself. To demo this attack, they wrote a flappy bird clone which was played using the number pad of the mPOS device. It weighed in at ~4k though, so positively heavyweight compared to this!

I wouldn't knock that achievement: this implementation is 228 byte of Javascript and I'm guessing that was 4k bytes of binary that only had access to a less-featureful standard library. You really should add the size of the JS runtime this implementation needs to make the comparison fair. Otherwise, I could blow you all out of the water with my 11 byte implementation:

    runFlappy()

(...which runs in FlappyLang, which includes a Flappy Bird implementation in the standard library.)

JosephRedfern4• 6 years ago

You're totally right, and I didn't mean to knock it -- they are very different beasts, and the mPOS flappy bird is insanely impressive (it's hardly open hardware!).

I see your 11 byte implementation, and raise you my 6!

    flpy()

etaioinshrdlu• 6 years ago

I like the data-url version! I found that on iOS safari, a data-URL page could be installed as a PWA (to some extent). I like the idea of shareable installable apps on iOS that don't even have a server to take down... because they're just a shareable URL.

qwertox• 6 years ago

This reminds me of the incredible Flappy Birds SNES Code Injection into Super Mario World. A must-see video.

https://www.youtube.com/watch?v=hB6eY73sLV0

kangalioo• 6 years ago

Fun fact I actually got lower than that when I was implementing it in TI-Basic on my school calculator :) It's really amazing how compact code gets on such a simple and pragmatic language

fath0m• 6 years ago

Using all the browser functionality feels like cheating. There is a good YouTube video, where a person made a snake game that fits inside a QR Code (albeit a larger version that we're used to, which can hold up to 2953 bytes). You can check it out here: https://www.youtube.com/watch?v=ExwqNreocpg

Quite an interesting watch.

txmachinery• 6 years ago

And when you're done playing Flappy Bird, there's always Flappy Bird Within Flappy Bird:

https://www.lexaloffle.com/bbs/?tid=29323

rsiqueira• 6 years ago

There are even smaller Flappy Bird implementations (with a maximum of 140 JavaScript characters): here: https://www.dwitter.net/h/FlappyBird Some are compressed, with the decompressor code included.

lifthrasiir• 6 years ago

Unfortunately they can't be easily compared against each other because Dwitter gives you a (albeit very light) shim for canvas and basic Math functions, which size matters at this scale.

xwdv• 6 years ago

The amount of bytes has dropped almost 11% so far since this was posted.

kzrdude• 6 years ago

The real cheat is using oversimplified graphics. The game should give an impression of being a flappy bird clone, including resembling it graphically. A good demo is impressive visually.

rwmj• 6 years ago

Boot sector flappy bird game by Oscar Toledo: https://github.com/nanochess/fbird (video: https://www.youtube.com/watch?v=p31XFFAeze4)

Flappy Bird in 228 bytes

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