April 29th-May 2nd, 2011
Theme: It’s Dangerous to go Alone! Take this!

More Info: Ludum Dare 20 Has Begun! (Keynote), Theme Voting Results.

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City Collision III

by dwrensha - Competition Entry

Watch and control collisions of particle clouds based on data from OpenStreetMap.

(Java Applet. Tested in Safari and Firefox with Java 1.5.)

Downloads and Links




SonnyBone says ...
May 2, 2011 @ 8:27am

Some type of explanation would be handy.

Yezu says ...
May 2, 2011 @ 3:55pm

This webstart doesn't seem to want to work... Why don't You make an executable jar?

Dan C says ...
May 2, 2011 @ 4:16pm

A curious idea, and it's kind-of interesting to watch the collisions, but the 'control' part seems to be missing. I jabbed at various keys and sometimes something seemed to happen at the beginning of a simulation, but I couldn't tell you what or why.

I don't understand how it fits in with the theme at all.

Kynrael says ...
May 2, 2011 @ 4:48pm

Technically interesting but I don't understand how that fits the theme... Hardly looks like a game really because i don't seem to be able to control anything :/

Kvisle says ...
May 2, 2011 @ 8:10pm

Doesn't work here.

LiquidAsh says ...
May 3, 2011 @ 3:26am

web version not loading in chrome

TellusE says ...
May 3, 2011 @ 9:21pm

Ditto, not loading in Chrome, does load in Firefox. And... pretty as it is (I get what's going on - city's collide! Muaha! I recognized Manhatten, right?).

Tom 7 says ...
May 4, 2011 @ 12:53am

no worky :-(

DeadlyJoe says ...
May 4, 2011 @ 7:23am

I got it to load in Firefox 4, but couldn't quite figure out how to control it. Pressing space and enter seems delayed, clicking doesn't seem to do anything really, might be due to the size of the datasets you're using. Anyway, fun example of 2D particle collision. However, it does seem slow given the small number of particles. If you use a quadtree or binning approach, you probably could bump it up to 20,000 or 30,000 particles, and with improved collision response. :)

randomnine says ...
May 4, 2011 @ 12:46pm

Couldn't get this to work in IE or Chrome. Sorry.

brainiac256 says ...
May 5, 2011 @ 5:50am

Firefox 3.6 on Ubuntu with Sun JVM, worked fine here, but doesn't seem to be interactive beyond "press enter to advance". Is this a feature or a bug?

May 6, 2011 @ 5:31am

Neat tech demo.

Switchbreak says ...
May 8, 2011 @ 7:47pm

Hmm, won't load in Chrome, Windows link seems to just go to the web version.

Hempuli says ...
May 23, 2011 @ 9:38am

I couldn't really understand this, either...
Instructions related to the controls would be cool!

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