ERIK

HAZZARD

CTO and Co-Founder, Five

posts

Bragi - A Javascript Logging Library for NodeJS

Bragi is a javascript logging library that allows expressive logging. It allows you to write log messages that stay in your code and provides expressive filtering capabilities. It uses colors and symbols, and allows piping logs to numerous outputs (console, file, remote hosts). This post discusses the NodeJS version of Bragi.

Sunday, August 17 2014 | 15 min read

How Logging Made me a Better Developer

I think logging is one of the most powerful tools in a programmer's toolbox. Unfortunately, it's supremely underutilized. Logging gives you data about what your code is doing. Over the past couple years, I've found logging helps me to manage complexity, communicate my code to other developers (and vice versa), and allows me to rapidly develop and debug software. As simple and silly as it may seem; for me, logging is unequivocally the most beneficial tool in my toolbox.

Sunday, August 10 2014 | 15 min read

How to Build an Entity Component System Game in Javascript

Creating and manipulating abstractions is the essence of programming. Entity Component System (ECS) is a different way of thinking about how to structure code, and it has some tremendous benefits. This post describes what ECS is and a Javascript implementation which we use to create a simple HTML5 browser based game called Rectangle Eater

Sunday, August 03 2014 | 25 min read

Misleading Users to Create Better Experiences

When trying to craft an experience, accuracy isn't always important. The user's experience is more important, and sometimes you have to mislead them a little to craft a better one.

Sunday, July 27 2014 | 15 min read

Visualizing Nebulous Data

The best data visualization choice is not always the 'correct' one. The most accurate representation of data is not inherently the best method of visualization. How well the visualization represents the data is probably the most important facet to consider when designing a visualization, but it’s certainly not the only one. It’s about what's best for the data and what experience you’re trying to create.

Sunday, July 20 2014 | 15 min read

Building Five Labs

Five Labs was an experiment that generates a personality for you based on your Facebook wall posts. We generated personalities for over 200 million people in a week. This post describes the architecture and infrastructure behind it.

Tuesday, July 01 2014 | 25 min read

Installing CUDA, OpenCL, and PyOpenCL on AWS EC2

This post describes how to setup CUDA, OpenCL, and PyOpenCL on EC2 with Ubuntu 12.04. These are the steps I took to install CUDA and OpenCL on EC2. This should work for any Ubuntu machine with a CUDA capable card.

Wednesday, September 18 2013 | 15 min read

OpenLayers Tutorial - Part 3 - Controls

OpenLayers Tutorial Part 3 - Controls. Tutorial covering OpenLayers Controls, various examples and sample code, including styling controls with CSS, placing controls outside the map in panels, and more.

Sunday, May 02 2010 | 20 min read

Replace a String in Multiple Files in Linux Using Grep and Sed

This is the quickest way I've found to search for and replace every occurrence of a string in multiple files in linux.

grep -rl matchstring somedir/ | xargs sed -i 's/string1/string2/g'
example:
grep -rl 'windows' ./ | xargs sed -i 's/windows/linux/g'

Sunday, April 25 2010 | 3 min read

OpenLayers Tutorial - Part 2 - Layers

OpenLayers Tutorial Part 2 - Tutorial covering OpenLayers Layers, including how it works on the backend, WMS, Vector layers, Google Maps and OpenLayer mashup instructions, and other Layer object related concepts.

Tuesday, February 02 2010 | 20 min read

Dijkstra's Algorithm - Shortest Path

This post will cover the basics of Dijksta's shortest path algorithm and how it can apply to path finding for game development. It is my opinion that understanding this algorithm will aid in understanding more complex AI algorithms, such as A*. This post is aimed more towards developers starting out in game development or those curious about Dijkstra's algorithm, but this will be a somewhat simplification of it and discuss mainly the concepts.

Sunday, January 17 2010 | 25 min read

Removing ^M characters on ubuntu in VIM

Remove ^M characters in VIM by replacing \r with nothing. ^M is really \r. Use :%s/\r//g

Friday, November 06 2009 | 2 min read

OpenLayers Tutorial - Part 1 - Introduction

Tutorial Introducing OpenLayers, covering the basics of creating a map and populating it with a single layer.

Saturday, October 03 2009 | 25 min read

ATI / NVidia Dual monitors with Ubuntu 8.04

Set up dual monitors in Ubuntu 8.04 for both ATI and NVidia based graphics cards without configuring xorg.conf or manually editing any other files. This should work for most ait or nvidia based dual monitor setups with Ubuntu 8.04 Hardy Heron. Note: This is a bit outdated, newer versions of Ubuntu support this out of the box

Monday, July 21 2008 | 10 min read

Javascript Browser Based Tower Defense Game: Elemental TD

My latest project is an Browser Based Tower Defense (Elemental TD) game written in Javascript using the MooTools framework on the client end. The thing that sort of sets it apart from other browser games is that it is a true browser based tower defense: it does not use flash or other third party plugins; it’s all Javascript.

Tuesday, November 06 2007 | 15 min read