I put together a status page for our family Minecraft server. It is a simple way to answer the first question before trying to join: is the server actually running? This is mostly integration work rather than a new Minecraft protocol implementation. The PHP page asks the MineTools ping and query endpoints for JSON, then […]
Daniel really likes maps, so I made him a little game for learning countries. It highlights a country in blue, gives him some names to choose from, and keeps track of how many answers he gets right. The map is SVG, which makes the browser do a lot of the useful work. Each country is […]
I played with the web video remote again and gave it a few more things to do. In addition to Play and Pause, it can slow the video down, speed it up, or jump back ten seconds. Sometimes rewind is the most useful button on a remote. It still uses a very small PHP mailbox […]
I keep making little bookmarklets and then forgetting the annoying part of turning JavaScript into a usable Favorites link. So I made a page to do that part for me. Paste in the script and it builds a link with the javascript: prefix, along with the address text to copy. The code squeezes out some […]
Daniel really likes progress bars for some reason. So I made him one where we can choose how many seconds it should take and watch it go. That is pretty much the whole application. 🙂 The bar is actually an HTML range input. JavaScript remembers the start time, checks how much time has passed, and […]
I came back to the permutations page and gave it a textbox and a button. It is a small improvement, but changing the address every time I want to try a different string gets old. The algorithm is still the same recursive one: pick each character in turn, permute the rest, and collect the completed […]
Shantell and I helped Sala answer her prom invitation. Apparently a simple yes was not quite enough, so we made a little Potential Date Assessment instead. He has to pass the tests before getting his answer. 🙂 It is a Portal-themed set of web pages with typed-out instructions, passwords, and a few different challenges. I […]
I have been working through interview-style programming questions and wrote a little page to generate permutations of a string. Give it 1234 and it prints all twenty-four arrangements. The recursive step is pretty simple: choose a character, find all the permutations of what is left, then put the chosen character at the beginning of each […]
I made a little equation solver for questions like 1_2_3_4_5=6. The numbers are already there; the puzzle is deciding which operations go in the spaces. The code recursively builds combinations of plus, minus, multiply, and divide, puts each combination between the numbers, and evaluates the result. For the default example, it finds answers such as […]
Another version of Dodge! This time I wanted to try moving the square by tilting a Windows 8 tablet. The basic idea is still the same: stay away from the bad blocks and try not to get too big. This version uses an HTML canvas with Box2DWeb doing the collision and body simulation. The game […]
