A Road to Common Lisp / Steve Losh
Posted on August 27th, 2018. I've gotten a bunch of emails asking for advice on how to learn Common Lisp in the present day. I decided to write down all the advice I've been giving through email and social media posts in the hopes that someone might find it useful. One disclaimer up front: this is a road to Common Lisp, not the road to Common Lisp. It's what I followed (without some of the dead en
Fun with Macros: If-Let and When-Let / Steve Losh
Posted on July 9th, 2018. I haven't been writing much lately because I've been in the process of switching my life over to Linux from OS X. I finally managed to get my blog infrastructure running again, so let's take a look at some deceptively-tricky Common Lisp macros: when-let and if-let (and their let* counterparts). IntroductionA First AttemptMultiple BindingsAdding Some StarsConsistencyDeclar
CHIP-8 in Common Lisp: Graphics / Steve Losh
Posted on December 21st, 2016. In the previous post we looked at how to emulate a CHIP-8 CPU with Common Lisp. But a CPU alone isn't much fun to play, so in this post we'll add a screen to the emulator with Qt. The full series of posts so far: CHIP-8 in Common Lisp: The CPU CHIP-8 in Common Lisp: Graphics CHIP-8 in Common Lisp: Input CHIP-8 in Common Lisp: Sound CHIP-8 in Common Lisp: Disassembly
CHIP-8 in Common Lisp: Graphics / Steve Losh
Posted on December 21st, 2016. In the previous post we looked at how to emulate a CHIP-8 CPU with Common Lisp. But a CPU alone isn't much fun to play, so in this post we'll add a screen to the emulator with Qt. The full series of posts so far: CHIP-8 in Common Lisp: The CPU CHIP-8 in Common Lisp: Graphics CHIP-8 in Common Lisp: Input CHIP-8 in Common Lisp: Sound CHIP-8 in Common Lisp: Disassembly
CHIP-8 in Common Lisp: The CPU / Steve Losh
Posted on December 19th, 2016. A while back I decided to try to write a Game Boy emulator in Common Lisp based on this series of articles. I made some good progress but eventually got bogged down because I was trying to learn a bunch of complex new things at once: How to write an emulator How to use Qt with Common Lisp How the Game Boy works internally Instead of dragging on, I decided to take a b
Terrain Generation with Midpoint Displacement / Steve Losh
Posted on February 19th, 2016. I'm taking the Game Engine Architecture class at Reykjavík University. My group just finished our midterm project where we played around with procedural terrain generation in Unity. It was a lot of fun and I really enjoyed creating terrain out of numbers, so I thought I'd write up a little introduction to a few of the algorithms. In this post we'll be looking at Midp
Git Koans / Steve Losh
Posted on April 8th, 2013. Inspired by Vim Koans. SilenceOne Thing WellOnly the GodsThe HobgoblinThe Long and Short of It Silence A Python programmer handed her ~/.gitconfig to Master Git. Among the many lines were the following: [alias] ; Explicit is better than implicit. If we want to merge ; we should do so ourselves. pull = pull --ff-only Master Git nodded. "git pull origin master," said the p
List Out of Lambda / Steve Losh
Posted on March 30th, 2013. If you ignore the practical issues of computers like size, weight, cost, heat, and so on, what do you really need in a programming language? Let's play around with this question. To understand this post you'll need a basic understanding of how functions in Javascript work. If you can look at this code and understand what it prints, you're good to go: var x = 10; var f =
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