Show HN: Eyeball

(eyeball.rory.codes)

156 points | by mrroryflint 8 hours ago

34 comments

  • 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

    • kerblang 22 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.

    • 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.
    • mrroryflint 2 hours ago
      Oh wow - that is very cool. Thanks for sharing.
      • harrisi 1 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.

  • p2hari 8 minutes ago
    My best on first attempt was 0.00% (Pure coincidence) . But was fun!
  • 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)

    • mrroryflint 4 hours ago
      Cool idea - thanks! I'm building a mobile app as we speak so I'll add it for sure.
  • davidcollantes 3 hours ago
    I was 0.06% off on eyeball. Beat me: https://eyeball.rory.codes.

    This is fun!

    • pelagicAustral 2 hours ago
      > perfect - you picked 0 · off by 1 (0.03%)
    • layer8 2 hours ago
      0.10%, but on a touch screen.
    • Theodores 3 hours ago
      Almost: 0.07%, allegedly 'perfect'. Getting an early win makes the game so much more 'playable'.
      • stavros 3 hours ago
        Why does an early win matter? Isn't it random?
  • densekernel 2 hours ago
    https://eyeball.rory.codes/ I was 0.20% off on eyeball. Beat me: https://eyeball.rory.codes
  • harrisi 1 hour 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 38 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.
  • Mabusto 1 hour 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!

  • 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.
  • wolttam 1 hour ago
    The low contrast of this website hurts my eyeball
  • schuhwerk 1 hour ago
    Nice! Would be nice to see your progress over time (if you got better, also as a function of speed...)
  • 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.
    • mrroryflint 2 hours ago
      Very cool idea! Will try and add.
  • 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.
  • ashm1104 4 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)

    • mrroryflint 3 hours ago
      I'm* building an app currently!

      *my old pal Claude

  • Chaseraph 1 hour ago
    Well I suck.
    • mrroryflint 1 hour ago
      I built it and still suck, don’t feel so bad.
  • Hugsbox 43 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
  • 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.
    • oneeyedpigeon 3 hours ago
      Just any kind of contrast between foreground and background would help.
    • ketul_shah 6 hours ago
      same happened to myself as well.
  • joey9prints 3 hours ago
    Cool idea, love how simple it is. Minimal and clean.
  • antoine-codefly 3 hours ago
    Definitely need an iOS version! An angle version on a circle would be nice too.
    • mrroryflint 3 hours ago
      Just wrapping up the beta for iOS! Will let you know asap.
    • tantalor 3 hours ago
      What does native give you that this doesn't?
  • zokier 3 hours ago
    10 round avg 4.5%.

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

  • 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.
  • 0x000xca0xfe 3 hours ago
    10 perfect hits in a row!

    ...

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

  • 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

  • oastp 1 hour ago
    love it, pulls you in after a first try)
  • ketul_shah 6 hours ago
    this is fun and helping me get grounded :). adding a timer would be a good idea, I think.
  • lbeyer 2 hours ago
    Simple premise, oddly hard to put down.
  • ehsangazarr 2 hours ago
    Really fun! I am pretty much blind
  • cdelsolar 1 hour ago
    i got a 0.00% after 3 tries!
  • tt_dev 2 hours ago
    this was fun
  • trickybusiness 7 hours ago
    this is fun!
  • ehsangazarr 2 hours ago
    pretty fun!
  • elliotJames548 6 hours ago
    i made 0.87%
  • nextma 8 hours ago
    my best is 0.08%
  • aspectop 3 hours ago
    my avg was around 2% not able to do more than that lol