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diff --git a/manuals/sly/Introduction.html b/manuals/sly/Introduction.html deleted file mode 100644 index c4eabcc..0000000 --- a/manuals/sly/Introduction.html +++ /dev/null @@ -1,120 +0,0 @@ -<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> -<html> -<!-- Copyright (C) 2013, 2014 David Thompson davet@gnu.org - -Permission is granted to copy, distribute and/or modify this document -under the terms of the GNU Free Documentation License, Version 1.3 -or any later version published by the Free Software Foundation; -with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. -A copy of the license is included in the section entitled "GNU -Free Documentation License". - -A copy of the license is also available from the Free Software -Foundation Web site at http://www.gnu.org/licenses/fdl.html. - - -The document was typeset with -http://www.texinfo.org/ (GNU Texinfo). - --> -<!-- Created by GNU Texinfo 6.0, http://www.gnu.org/software/texinfo/ --> -<head> -<title>Sly: Introduction</title> - -<meta name="description" content="Sly: Introduction"> -<meta name="keywords" content="Sly: Introduction"> -<meta name="resource-type" content="document"> -<meta name="distribution" content="global"> -<meta name="Generator" content="makeinfo"> -<meta charset="UTF-8"> -<link href="index.html#Top" rel="start" title="Top"> -<link href="Index.html#Index" rel="index" title="Index"> -<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents"> -<link href="index.html#Top" rel="up" title="Top"> -<link href="Installation.html#Installation" rel="next" title="Installation"> -<link href="index.html#Top" rel="prev" title="Top"> -<style type="text/css"> -<!-- -a.summary-letter {text-decoration: none} -blockquote.indentedblock {margin-right: 0em} -blockquote.smallindentedblock {margin-right: 0em; font-size: smaller} -blockquote.smallquotation {font-size: smaller} -div.display {margin-left: 3.2em} -div.example {margin-left: 3.2em} -div.lisp {margin-left: 3.2em} -div.smalldisplay {margin-left: 3.2em} -div.smallexample {margin-left: 3.2em} -div.smalllisp {margin-left: 3.2em} -kbd {font-style: oblique} -pre.display {font-family: inherit} -pre.format {font-family: inherit} -pre.menu-comment {font-family: serif} -pre.menu-preformatted {font-family: serif} -pre.smalldisplay {font-family: inherit; font-size: smaller} -pre.smallexample {font-size: smaller} -pre.smallformat {font-family: inherit; font-size: smaller} -pre.smalllisp {font-size: smaller} -span.nocodebreak {white-space: nowrap} -span.nolinebreak {white-space: nowrap} -span.roman {font-family: serif; font-weight: normal} -span.sansserif {font-family: sans-serif; font-weight: normal} -ul.no-bullet {list-style: none} ---> -</style> - - -</head> - -<body lang="en"> -<a name="Introduction"></a> -<div class="header"> -<p> -Next: <a href="Installation.html#Installation" accesskey="n" rel="next">Installation</a>, Previous: <a href="index.html#Top" accesskey="p" rel="prev">Top</a>, Up: <a href="index.html#Top" accesskey="u" rel="up">Top</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Index.html#Index" title="Index" rel="index">Index</a>]</p> -</div> -<hr> -<a name="Introduction-1"></a> -<h2 class="chapter">1 Introduction</h2> - -<p>Sly is a 2D/3D game engine written in the GNU Guile dialect of the -Scheme programming language. With the help of Guile, Sly provides all -of the essential building blocks for making video games, such as: -window management, input even handling, rendering, linear algebra, and -powerful scripting capabilities. Sly differentiates itself from -traditional game engines by providing a dynamic live codinng -environment and a functional API. -</p> -<p>For those unfamiliar with the term, “live coding” is the practice of -improvised interactive programming. Sly provides a suitable -environment for live coding by leveraging Guile’s cooperative REPL -server. When used with a powerful editing tool such as Emacs (with -the fantastic Geiser extension), programmers may evaluate arbitrary -code and see the effects of their modifications in real time. This -tight feedback loop allows for faster prototyping, greater -productivity, and most importantly, more fun. -</p> -<p>Functional reactive programming (FRP) is a technique used to model -time-varying values with pure functions. A pure function is a -function whose return value depends solely upon its arguments. They -also produce no side-effects, such as calling ’set!’ on a variable or -writing to a file on disk. Sly encapsulates time-varying values in -“signals”, a high-level data structure for controlling the flow of -events. Unlike imperative event callbacks, signals can easily be -composed to form new signals. By modeling game state with pure -functions and immutable data, a game can be seen as a function of -time. To play the game is to “fold” (accumulate a result) over -time. Constructing a game this way allows for deterministic behavior -that is easier to reason about and test than the accumulation of -side-effects seen in traditional game engines. The signal interface -is also declarative, meaning that the programmer describes <em>what</em> -the state of the world should be like at any given time, rather than -<em>how</em> to get there. -</p> -<hr> -<div class="header"> -<p> -Next: <a href="Installation.html#Installation" accesskey="n" rel="next">Installation</a>, Previous: <a href="index.html#Top" accesskey="p" rel="prev">Top</a>, Up: <a href="index.html#Top" accesskey="u" rel="up">Top</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Index.html#Index" title="Index" rel="index">Index</a>]</p> -</div> - - - -</body> -</html> |