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authorDavid Thompson <dthompson2@worcester.edu>2023-05-24 08:09:03 -0400
committerDavid Thompson <dthompson2@worcester.edu>2023-05-24 08:09:03 -0400
commit03072ef67af0623758a660e2cd3fb5e153133efa (patch)
treeeea30b2b8fd47aa7d1bd6494ed64b4313f03eb4a /manuals/chickadee/Particles.html
parentbcccc363a3b814930856be06c52914fb88c2ece6 (diff)
Update chickadee manual.
Diffstat (limited to 'manuals/chickadee/Particles.html')
-rw-r--r--manuals/chickadee/Particles.html58
1 files changed, 29 insertions, 29 deletions
diff --git a/manuals/chickadee/Particles.html b/manuals/chickadee/Particles.html
index 38943fa..116e2e6 100644
--- a/manuals/chickadee/Particles.html
+++ b/manuals/chickadee/Particles.html
@@ -1,6 +1,6 @@
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
-<!-- Copyright (C) 2017-2021 David Thompson davet@gnu.org
+<!-- Copyright (C) 2017-2023 David Thompson dthompson2@worcester.edu
Permission is granted to copy, distribute and/or modify this document
under the terms of the GNU Free Documentation License, Version 1.3
@@ -17,25 +17,25 @@ 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 6.7, http://www.gnu.org/software/texinfo/ -->
+ -->
+<!-- Created by GNU Texinfo 6.7, http://www.gnu.org/software/texinfo/ -->
<head>
-<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
+<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Particles (The Chickadee Game Toolkit)</title>
-<meta name="description" content="Particles (The Chickadee Game Toolkit)">
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-<link href="Graphics.html" rel="up" title="Graphics">
-<link href="Tile-Maps.html" rel="next" title="Tile Maps">
-<link href="Vector-Paths.html" rel="prev" title="Vector Paths">
+<meta name="description" content="Particles (The Chickadee Game Toolkit)" />
+<meta name="keywords" content="Particles (The Chickadee Game Toolkit)" />
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+<meta name="distribution" content="global" />
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+<link href="Index.html" rel="index" title="Index" />
+<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents" />
+<link href="Graphics.html" rel="up" title="Graphics" />
+<link href="Tile-Maps.html" rel="next" title="Tile Maps" />
+<link href="Vector-Paths.html" rel="prev" title="Vector Paths" />
<style type="text/css">
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+&lt;!--
a.summary-letter {text-decoration: none}
blockquote.indentedblock {margin-right: 0em}
div.display {margin-left: 3.2em}
@@ -72,9 +72,9 @@ ul.no-bullet {list-style: none}
}
}
--->
+--&gt;
</style>
-<link rel="stylesheet" type="text/css" href="https://dthompson.us/css/dthompson.css">
+<link rel="stylesheet" type="text/css" href="https://dthompson.us/css/dthompson.css" />
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@@ -84,7 +84,7 @@ ul.no-bullet {list-style: none}
<p>
Next: <a href="Tile-Maps.html" accesskey="n" rel="next">Tile Maps</a>, Previous: <a href="Vector-Paths.html" accesskey="p" rel="prev">Vector Paths</a>, Up: <a href="Graphics.html" accesskey="u" rel="up">Graphics</a> &nbsp; [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Index.html" title="Index" rel="index">Index</a>]</p>
</div>
-<hr>
+<hr />
<span id="Particles-1"></span><h4 class="subsection">5.3.6 Particles</h4>
<p>Effects like smoke, fire, sparks, etc. are often achieved by animating
@@ -99,10 +99,10 @@ manipulating particle systems.
<p>Below is an example of a very simple particle system that utilizes
nearly all of the default configuration settings:
</p>
-<div class="example">
-<pre class="example">(use-modules (chickadee graphics particles))
-(define texture (load-image &quot;particle.png&quot;))
-(define particles (make-particles 2000 #:texture texture))
+<div class="lisp">
+<pre class="lisp"><span class="syntax-open">(</span><span class="syntax-symbol">use-modules</span> <span class="syntax-open">(</span><span class="syntax-symbol">chickadee</span> <span class="syntax-symbol">graphics</span> <span class="syntax-symbol">particles</span><span class="syntax-close">)</span><span class="syntax-close">)</span>
+<span class="syntax-open">(</span><span class="syntax-special">define</span> <span class="syntax-symbol">texture</span> <span class="syntax-open">(</span><span class="syntax-symbol">load-image</span> <span class="syntax-string">"particle.png"</span><span class="syntax-close">)</span><span class="syntax-close">)</span>
+<span class="syntax-open">(</span><span class="syntax-special">define</span> <span class="syntax-symbol">particles</span> <span class="syntax-open">(</span><span class="syntax-symbol">make-particles</span> <span class="syntax-symbol">2000</span> <span class="syntax-keyword">#:texture</span> <span class="syntax-symbol">texture</span><span class="syntax-close">)</span><span class="syntax-close">)</span>
</pre></div>
<p>In order to put particles into a particle system, a particle
@@ -112,10 +112,10 @@ how many of them to spawn, and for how long they should do it.
<p>Below is an example of an emitter that spawns 16 particles per frame
at the coordinates <code>(320, 240)</code>:
</p>
-<div class="example">
-<pre class="example">(use-modules (chickadee math rect))
-(define emitter (make-particle-emitter (make-rect 0.0 0.0 320.0 240.0) 16))
-(add-particle-emitter particles emitter)
+<div class="lisp">
+<pre class="lisp"><span class="syntax-open">(</span><span class="syntax-symbol">use-modules</span> <span class="syntax-open">(</span><span class="syntax-symbol">chickadee</span> <span class="syntax-symbol">math</span> <span class="syntax-symbol">rect</span><span class="syntax-close">)</span><span class="syntax-close">)</span>
+<span class="syntax-open">(</span><span class="syntax-special">define</span> <span class="syntax-symbol">emitter</span> <span class="syntax-open">(</span><span class="syntax-symbol">make-particle-emitter</span> <span class="syntax-open">(</span><span class="syntax-symbol">make-rect</span> <span class="syntax-symbol">0.0</span> <span class="syntax-symbol">0.0</span> <span class="syntax-symbol">320.0</span> <span class="syntax-symbol">240.0</span><span class="syntax-close">)</span> <span class="syntax-symbol">16</span><span class="syntax-close">)</span><span class="syntax-close">)</span>
+<span class="syntax-open">(</span><span class="syntax-symbol">add-particle-emitter</span> <span class="syntax-symbol">particles</span> <span class="syntax-symbol">emitter</span><span class="syntax-close">)</span>
</pre></div>
<p>To see all of the tweakable knobs and switches, read on!
@@ -237,10 +237,10 @@ frame.
<dl>
<dt id="index-remove_002dparticle_002demitter">Procedure: <strong>remove-particle-emitter</strong> <em>particles emitter</em></dt>
-<dd><p>Remove <var>emitter</var> to <var>particles</var>
+<dd><p>Remove <var>emitter</var> from <var>particles</var>
</p></dd></dl>
-<hr>
+<hr />
<div class="header">
<p>
Next: <a href="Tile-Maps.html" accesskey="n" rel="next">Tile Maps</a>, Previous: <a href="Vector-Paths.html" accesskey="p" rel="prev">Vector Paths</a>, Up: <a href="Graphics.html" accesskey="u" rel="up">Graphics</a> &nbsp; [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Index.html" title="Index" rel="index">Index</a>]</p>