Show HN: Eyeball

nextma | 8 hours ago

my best is 0.08%

zer0tonin | 6 hours ago

> I was 0.00% off on eyeball. Beat me: https://eyeball.rory.codes

(It was pure luck)

trickybusiness | 7 hours ago

this is fun!

zer0tonin | 6 hours ago

This is fun but you need to put "click the line" higher on the page. It took me a while to figure out what I was looking at.

ketul_shah | 5 hours ago

same happened to myself as well.

oneeyedpigeon | 3 hours ago

Just any kind of contrast between foreground and background would help.

elliotJames548 | 6 hours ago

i made 0.87%

ketul_shah | 5 hours ago

this is fun and helping me get grounded :). adding a timer would be a good idea, I think.

pedromlsreis | 4 hours ago

0.11% by luck, because I actually got lucky the target number was too close to zero, out of a big scale.

forlorn_mammoth | 4 hours ago

Love it!

It would be great to have a 'training' mode, where you get to repeat ones you miss. This would increase the learning speed.

Easy training- repeat the one you just borked Medium training- cycles through say 5 examples until you get all five within your target range (1%, 0.1%, whatever)

[OP] mrroryflint | 4 hours ago

Cool idea - thanks! I'm building a mobile app as we speak so I'll add it for sure.

ashm1104 | 3 hours ago

I love these kind ones! Really engaging also yes as someone commented, the training mode would be an awesome idea.

Also, I tried this on laptop as well as my phone, I liked it more on my phone (I know the whole point is about precision though)

[OP] mrroryflint | 3 hours ago

I'm* building an app currently!

*my old pal Claude

ramon156 | 3 hours ago

800

0 out of 1,600

I still missed. Even when there was centered text.

Maybe the human is the weakest link

zokier | 3 hours ago

10 round avg 4.5%.

A time limit would make sense imho. For extra challenge, add diagonal or curved lines.

davidcollantes | 3 hours ago

I was 0.06% off on eyeball. Beat me: https://eyeball.rory.codes.

This is fun!

Theodores | 3 hours ago

Almost: 0.07%, allegedly 'perfect'. Getting an early win makes the game so much more 'playable'.

stavros | 2 hours ago

Why does an early win matter? Isn't it random?

pelagicAustral | 2 hours ago

> perfect - you picked 0 · off by 1 (0.03%)

layer8 | 2 hours ago

0.10%, but on a touch screen.

tgamma | 55 minutes ago

I was 0.00% off on eyeball. Beat me: https://eyeball.rory.codes

Lucky punch, on a touch screen!

0x000xca0xfe | 3 hours ago

10 perfect hits in a row!

...

handleClick({clientX: els.bar.getBoundingClientRect().left + els.bar.getBoundingClientRect().width / state.n * state.target })

joey9prints | 3 hours ago

Cool idea, love how simple it is. Minimal and clean.

aspectop | 3 hours ago

my avg was around 2% not able to do more than that lol

antoine-codefly | 3 hours ago

Definitely need an iOS version! An angle version on a circle would be nice too.

[OP] mrroryflint | 3 hours ago

Just wrapping up the beta for iOS! Will let you know asap.

tantalor | 2 hours ago

What does native give you that this doesn't?

throwawaydudhdn | 2 hours ago

Great idea! Have you considered storing triplets <range, correct number, selected number> for each try and making image plots of these (x/y coordinates are correct/selected numbers, color of each pixel represents frequency) for multiple users for each range? I think the image might reveal interesting properties of human eyeballing, like near-perfect accuracy around 50%, but with less obvious correlations.

[OP] mrroryflint | 2 hours ago

Very cool idea! Will try and add.

tt_dev | 2 hours ago

this was fun

MontyCarloHall | 2 hours ago

A modern take on Matthias Wandel's classic [0], which has you guess a variety of geometric attributes (e.g. angle bisection, centroid locating, shape regularization), not just simple partitioning of a line.

[0] https://woodgears.ca/eyeball/index.html

[OP] mrroryflint | 2 hours ago

Oh wow - that is very cool. Thanks for sharing.

harrisi | an hour ago

Just want to say thank you for sharing your project. Very fun, and I wouldn't know about Matthias Wandel's version if not for yours!

Also, both of these tickled my brain in a great way. I think a potentially fun continuation would be to "eyeball" physics. For example, throw a ball and pause the physics before it hits something (ground, object, who knows?) and guess the location. Or show two objects about to collide with certain shapes and masses and guess what one of them will hit first and where.

stronglikedan | 2 hours ago

This is great. If only the little square tool would disappear while I make adjustments though - it's just enough of a distraction to barely miss.

kerblang | 12 minutes ago

Oh that version actually made sense.

Going back to our newer game, I realized that I am supposed to figure out where the number given should fall on the line.

A case study in modern useability - looks a lot cooler, can't figure it out.

FinanceFreddy | 2 hours ago

Oh, this is actually fun! How about if you change the target every few seconds to add a bit of pressure.

lbeyer | 2 hours ago

Simple premise, oddly hard to put down.

layer8 | 2 hours ago

The fact that the numbers are in a brighter color than the end marks, and that the numbers go inwards, makes it slightly more difficult than it would otherwise be, because the eye is biased by the more prominent space between the numbers being different from the line between the marks.

ehsangazarr | an hour ago

Really fun! I am pretty much blind

ehsangazarr | an hour ago

pretty fun!

densekernel | an hour ago

https://eyeball.rory.codes/ I was 0.20% off on eyeball. Beat me: https://eyeball.rory.codes

pravj | 53 minutes ago

I reached 0.05% and retired for the day.

https://postimg.cc/MXBQqrXf

schuhwerk | an hour ago

Nice! Would be nice to see your progress over time (if you got better, also as a function of speed...)

oastp | an hour ago

love it, pulls you in after a first try)

wolttam | an hour ago

The low contrast of this website hurts my eyeball

Chaseraph | an hour ago

Well I suck.

[OP] mrroryflint | an hour ago

I built it and still suck, don’t feel so bad.

Mabusto | 52 minutes ago

I love these simple games that take 2 seconds to understand the rules.

Off by 6 on my iPad by mis-clicking. Very satisfying!

[OP] mrroryflint | 19 minutes ago

Thank you!

harrisi | 52 minutes ago

It's interesting that there are, at the time I'm commenting, 11 new users commenting on this submission, some commenting multiple times. I wonder what the effect of "share my score" type pages have on account creation.

hazelnut | 28 minutes ago

yes, was thinking the same. but it's also weird that the amount of new users commenting is so much higher here. wonder if that is just not a coincidence.

cdelsolar | 52 minutes ago

i got a 0.00% after 3 tries!

Hugsbox | 33 minutes ago

I didn't think I'd be any good at this. What I didn't expect is how wildly inaccurate I'd be on every single goddamn attempt lmao it's like I completely lack whatever part of your brain is required to do this