Euclid: The Game

by mpwarres • 12 years ago

246 82 12 years ago

remon• 12 years ago

Just gave it a go. Quite a fun game actually. My compliments to the author. Some feedback that may be of use :

1) Use thicker lines, preferably in a color that contrasts better with white (although it'll be fine if the segment width is 2-4 pixels)

2) Support for drag + snap-to-intersect/vertex UX rather than click only. I instinctively tried this first.

3) Some sort of progress tracking (local storage or user accounts even perhaps)

Anyway, great idea and a promising start!

happimess2• 12 years ago

One more UI request: Given two points, there are two possible third points on an equilateral triangle, and no clear way to choose between them.

Great game, though. I'm on level 5 and having a lot of fun.

tuxone• 12 years ago

seems like the third point will follow the anticlockwise norm

mickdarling• 12 years ago

An eraser to remove lines and segments would be useful too.

thedufer• 12 years ago

Yeah, some of the later ones just get cluttered and it can become difficult to click on the intended point.

ordinary2• 12 years ago

Right click.

kasperpeulen2• 12 years ago

I'm working on some of those suggestions here: http://euclidthegame.org/Level1anew.html

Thanks for your feedback!

andmarios2• 12 years ago

Nice game! I think it could make geometry more fun for students.

evanb• 12 years ago

Reminds me of this game: http://www.sciencevsmagic.net/geo/# which seems to be a lot less buggy.

SpoonMeiser• 12 years ago

Exactly what I was thinking

GhotiFish2• 12 years ago

thanks for the link. I had lost this game in the mists of time.

I'll give credit to OP's game however, giving you new tools once you have proved how to do something is great!

rhubarbcustard• 12 years ago

Cool game, well made, but it's driving me nuts. I'm stuck on 3/40 - I've created the enclosing circle for "in origin circle" but game doesn't want to acknowledge it. Clearly I'm doing something wrong....

ari_smith• 12 years ago

"in origin circle" means that it has to be circumscribed by a circle with a center on one of the two starting points

Edit: It actually has to be inside of the circle made centered on one of the starting points and with the other starting point on the circle.

RobotCaleb6• 12 years ago

Reminds me of [0], only with worse controls.

[0] http://sciencevsmagic.net/geo/

kasperpeulen2• 12 years ago

I'm working on the controls. Let me know what you think: http://euclidthegame.org/Level1anew.html

RobotCaleb6• 12 years ago

That's a lot better. I'd like to see it try to snap when dragging. I notice I can click once (compass) and click again on a point, but a click-drag to a point doesn't seem to snap to the point.

3rd3• 12 years ago

I wonder what other mathematical axiom sets can be pretty much directly translated in a game like that. Maybe something from calculus, topology or knot theory.

seanstickle2• 12 years ago

Deontic logic! "Prove that killing Mr. A is incompatible with the categorical imperative. Also supports undo and redo."

manveru• 12 years ago

For algebra there is http://dragonboxapp.com/ - my 5yo son loves it.

danohuiginn• 12 years ago

RollerCoaster Tycoon: Trolley Problem Edition

ZeroGravitas• 12 years ago

That's fun and educational.

Minor UI feedback:

The undo button moves when you click it which is annoying if you intend to step back 2 or more steps.

Forbo• 12 years ago

Another minor UI feedback: the yellow against white is very low contrast and difficult to see on my display.

Guvante2• 12 years ago

Also if you do a partial action and press undo it undoes the partial action and the previous one.

It looks like Esc is the intended "nevermind" button, but it isn't obvious.

Retr0spectrum• 12 years ago

That reminds me of google/trimble sketchup. It always annoyed me.

shanusmagnus• 12 years ago

I recently bought a copy of Euclid and it's been sitting on my bookshelf, waiting for that ever-receding "when I have the time." It's like the author set out to give me the most perfect and thoughtful birthday present. :)

FlightOfGrey• 12 years ago

What's the book you're referencing?

taejo• 12 years ago

Presumably Elements; though Euclid wrote others, it's the most famous and relevant to the OP.

KPLauritzen• 12 years ago

It's most likely Elements

https://en.wikipedia.org/wiki/Euclid%27s_Elements

seanstickle2• 12 years ago

This game is very similar to my first year of college mathematics -- studying Euclid's Elements and working through the proofs. I look forward to the game version of my sophomore year -- Apollonius' conic sections and Ptolemy's astronomy.

imperialWicket• 12 years ago

I was thinking the same thing... But Newton and Lobachevsky make for a much more challenging 3rd and 4th edition.

mijoharas2• 12 years ago

dammit, I'm stuck on 11. Has anyone got a solution?

RobotCaleb6• 12 years ago

Compass2 is your friend.

mijoharas2• 12 years ago

Ahhh, I hadn't ever used Compass2 yet, I'll have to check it out, thanks.

kilovoltaire• 12 years ago

Wow, totally did not notice when Compass2 appeared, probably complicated several of my solutions quite a bit...

RobotCaleb6• 12 years ago

I'm struggling on 17. There is no circle that intersects both A and B that is tangential to the line. That's how I interpret the instructions for that level, anyway. However, it seems there should be an infinite amount of circles that are tangential to the line that can intersect A.

dcre• 12 years ago

The circle is supposed to be tangent to the line at B.

RobotCaleb6• 12 years ago

Is that to mean tangential to anywhere on the line that intersects B, or B is the point at which the circle is tangential to the line that intersects B?

RobotCaleb6• 12 years ago

I figured it out. I was a bit confused in my assumption.

alepper• 12 years ago

From the icons, it looks like this may be using Geogebra[1] under the hood. It's a really polished little tool for exploring geometry.

[1] http://www.geogebra.org/cms/en/

artjumble2• 12 years ago

Good timing, I just posted the same.

artjumble2• 12 years ago

Cool. What is the relation to http://web.geogebra.org/app/ ?

pragone2• 12 years ago

I'm not sure about you guys, but I'm not getting any feedback whatsoever. I've measured it with all the tools I can find, but I'm not getting any "Well done" or any link to the next level. Any thoughts?

Guvante2• 12 years ago

It is important to not guess.

You need to use the tools provided to create something that is guaranteed to be what is asked for.

For instance in the first level you aren't given a ruler, so you need to figure out how to do the level without using one.

pragone2• 12 years ago

Well, no shit. But I'm saying I constructed an equilateral triangle but the game wasn't recognizing it. After reloading the page a few times it finally started giving feedback, like thickening the line when moving over it (which wasn't happening before), letting me actually place the dot on the intersection between the two circles

innguest• 12 years ago

Really cool game and great idea, there's some good educational potential here. I'm looking forward to exploring Euclid's proofs again in this digital format. This easily beats dilly-dallying with a real-life compass.

arikrak• 12 years ago

Looks cool! I think math needs to be taught in that kind of style, where people learn by doing it. I would be interested in having something similar to that on my site, Learneroo.com. One suggestion: start people off by walking them through easy challenge so they learn the interface.

sand500• 12 years ago

I went through couple levels before I realized I got more tools as I go on. Was using just intersect, segment,and compass and things were getting crowded.

joshdick2• 12 years ago

If it was good enough for the ancient Greeks, it should be good enough for you.

Blahah2• 12 years ago

Time to crack out the papyrus and stylus and turn off the computer?

rwissmann• 12 years ago

Awesome. Definitely forwarding to all the teachers I know.

sanderjd• 12 years ago

Great game! I'd love to see other peoples' solutions once I finish mine.

macrael• 12 years ago

I love this stuff. If this is "thinking geometrically" how does that compare to other forms of problem solving?

beyondcompute• 12 years ago

Awesome game!

tricolon• 12 years ago

Warning: if you are stuck on #19, there is a bug. For some reason it won't let you make points at the intersections you need to complete it.

GhotiFish2• 12 years ago

well thanks for the tip... but I'm stuck on #19

... because I'm stuck on #19

T.T

jonahx• 12 years ago

There is a bug, but you can hack your way around it and still solve it. It's like 2 problems in one!

baddox2• 12 years ago

Maybe I'm blind, but I can't find the link to level 2 when I solve level 1.

baddox2• 12 years ago

Ah, so "Well done" doesn't mean you're actually done. I needed to actually draw the lines between the three points to get to the next level.

alceufc• 12 years ago

Very nice game.

One problem for me is that by default the comments from other users are shown, sometimes with the solution for the level.

everyone• 12 years ago

How many levels are there?

joshdick2• 12 years ago

vit_tucek• 12 years ago

I think dashed lines for rays would reduce a lot of visual clutter.

Anyway, I long for the day when someone writes a similar toy for a non-Euclidean plane.

inquist• 12 years ago

Level 20 is hard.

pepijndevos• 12 years ago

Really hard. Any hints?

aikah• 12 years ago

Mind blown! very good idea,the controls are a bit rough,but it could be a great tool to teach geometry and trigonometry in general.I went up to level 4,do you "support" tangents?

rabz• 12 years ago

Does this have anything with the old ios game by Frank Li and Jason Ma?

lexis4• 12 years ago

Can someone please explain to me why doing high school-level technical drawing homework is considered a fun game now?

drdeca2• 12 years ago

Because it is an interactive experience that people enjoy/find fun, and there is a win condition.

I think that fits the requirements for a "fun game".

Also wouldn't a CAD program have bisect and what this calls compass2 from the get go?

lexis4• 12 years ago

For some reason I was not expecting HN adults to be surprised/bemused over high school material. My bad, I guess.

Is it the norm this days to use CAD in technical drawing courses? Mine were strictly hand-drawn.

botismarius• 12 years ago

Great game! Waiting for more levels...

andmarios2• 12 years ago

Great, now I wish there were more than 20 levels! :p

klunger• 12 years ago

Reminds me of this https://play.google.com/store/apps/details?id=com.wewanttokn...

The author could perhaps learn a bit about leveling from it, to make it more accessible to people trying to learn geometry (if that is the goal?)

graeme• 12 years ago

Does that cover all of Euclid's elements?

I wanted to go through the Elements, but it wasn't clear how I could do it using a straight edge and compass. I couldn't find much guidance online.

cshung• 12 years ago

Completed all levels and produced this spoiler.

http://andrew-euclid.blogspot.com/2014/06/euclid-game-spoile...

Euclid: The Game

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