Land of Lisp: Learn to Program in Lisp, One Game at a Time!
Conrad Barski
Language: English
Pages: 504
ISBN: 1593272812
Format: PDF / Kindle (mobi) / ePub
Lisp has been hailed as the world's most powerful programming language, but its cryptic syntax and academic reputation can be enough to scare off even experienced programmers. Those dark days are finally over—Land of Lisp brings the power of functional programming to the people!
With his brilliantly quirky comics and out-of-this-world games, longtime Lisper Conrad Barski teaches you the mysteries of Common Lisp. You'll start with the basics, like list manipulation, I/O, and recursion, then move on to more complex topics like macros, higher order programming, and domain-specific languages. Then, when your brain overheats, you can kick back with an action-packed comic book interlude!
Along the way you'll create (and play) games like Wizard Adventure, a text adventure with a whiskey-soaked twist, and Grand Theft Wumpus, the most violent version of Hunt the Wumpus the world has ever seen.
You'll learn to:
- Master the quirks of Lisp's syntax and semantics
- Write concise and elegant functional programs
- Use macros, create domain-specific languages, and learn other advanced Lisp techniques
- Create your own web server, and use it to play browser-based games
- Put your Lisp skills to the test by writing brain-melting games like Dice of Doom and Orc Battle
With Land of Lisp, the power of functional programming is yours to wield.
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is that some of these extra tokens (for, below, and sum) appear to have special meanings. Recall from Chapter 3 that the first token in a form (the one immediately after the opening parenthesis) is typically what decides the basic behavior of the code, while the rest of the form contains parameters. Within the loop macro, several of these “magic tokens” fundamentally affect the loop’s behavior. Here’s what they mean: for allows you to declare a variable (in this case, named i) that iterates
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need to define a structure that stores the properties of each animal in our game: (defstruct animal x y energy dir genes) Let’s take a look at each of these fields in detail. Anatomy of an Animal We need to track several properties for each animal. First, we need to know its x- and y-coordinates. This indicates where the animal is located on the world map. Next, we need to know how much energy an animal has. This is a Darwinian game of survival, so if an animal can’t forage enough
