{"id":246,"date":"2007-08-19T03:38:49","date_gmt":"2007-08-19T08:38:49","guid":{"rendered":"http:\/\/crschmidt.net\/blog\/?p=246"},"modified":"2007-08-19T03:38:49","modified_gmt":"2007-08-19T08:38:49","slug":"hacking-on-olpc","status":"publish","type":"post","link":"https:\/\/crschmidt.net\/blog\/archives\/246\/hacking-on-olpc\/","title":{"rendered":"Hacking on OLPC"},"content":{"rendered":"<p>Having spent some time around SJ Klein the past week, I&#8217;m currently hacking on some mapping things for them. I&#8217;m also trying to find interesting activities that already exist to try them out: One of the ones I stumbled into is <a href=\"http:\/\/wiki.laptop.org\/go\/Kuku\">Kuku Anakula<\/a> (Hungry Chicken). After playing it for a bit, I found it dissappointingly slow to respond to keyboard input. Since Python is a <a href=\"http:\/\/wiki.laptop.org\/go\/Python\">main component in OLPC<\/a>, it&#8217;s written in Python, so I took it apart.<\/p>\n<p>The result is that I refactored the code to make an order of magnitude fewer function calls, and in the process shaved about 50% of the CPU time off, so far as I can tell, when testing on my mac. I learned how to use hotshot, and have the <a href=\"http:\/\/crschmidt.net\/olpc\/Kuku-original.profile.txt\">original profiling data<\/a> and the <a href=\"http:\/\/crschmidt.net\/olpc\/Kuku-refactor.profile.txt\">profile for my refactor<\/a>. Getting the new version of the activity on the XO was very satisifying: the gameplay is significantly better, and changes the game from being more like a chore to more like a game.<\/p>\n<p><a href=\"http:\/\/www.flickr.com\/photos\/crschmidt\/1160486956\/\" title=\"Photo Sharing\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/farm2.static.flickr.com\/1405\/1160486956_8e433fdcca_m.jpg\" width=\"180\" height=\"240\" style=\"float:right; margin: 5px 5px 10px 10px\" alt=\"08182007061\" \/><\/a><br \/>\nOther things I did today for OLPC include building\/installing OGR, and getting FeatureServer set up to run on it with a world borders shapefile. Still got a bit of work to do to build a world map\/atlas with click-to-query attributes local on the box, but it&#8217;s not too far off. <\/p>\n<p>If you didn&#8217;t see them via Slashdot, <a href=\"http:\/\/flickr.com\/photos\/crschmidt\/sets\/72157601375183996\/\">this set<\/a> of photos of the OLPC in action is very cute. <\/p>\n","protected":false},"excerpt":{"rendered":"<p>Having spent some time around SJ Klein the past week, I&#8217;m currently hacking on some mapping things for them. I&#8217;m also trying to find interesting activities that already exist to try them out: One of the ones I stumbled into is Kuku Anakula (Hungry Chicken). After playing it for a bit, I found it dissappointingly [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[63,73,44,72],"tags":[],"class_list":["post-246","post","type-post","status-publish","format-standard","hentry","category-featureserver","category-gdalogr","category-locality-and-space","category-olpc"],"_links":{"self":[{"href":"https:\/\/crschmidt.net\/blog\/wp-json\/wp\/v2\/posts\/246","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/crschmidt.net\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/crschmidt.net\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/crschmidt.net\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/crschmidt.net\/blog\/wp-json\/wp\/v2\/comments?post=246"}],"version-history":[{"count":0,"href":"https:\/\/crschmidt.net\/blog\/wp-json\/wp\/v2\/posts\/246\/revisions"}],"wp:attachment":[{"href":"https:\/\/crschmidt.net\/blog\/wp-json\/wp\/v2\/media?parent=246"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/crschmidt.net\/blog\/wp-json\/wp\/v2\/categories?post=246"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/crschmidt.net\/blog\/wp-json\/wp\/v2\/tags?post=246"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}