mirror of
https://github.com/ganelson/inform.git
synced 2024-05-19 17:39:23 +03:00
141 lines
20 KiB
HTML
141 lines
20 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
|
|
<html>
|
|
<head>
|
|
<title>Backdrop Instances</title>
|
|
<link href="../docs-assets/Breadcrumbs.css" rel="stylesheet" rev="stylesheet" type="text/css">
|
|
<meta name="viewport" content="width=device-width initial-scale=1">
|
|
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
|
|
<meta http-equiv="Content-Language" content="en-gb">
|
|
|
|
<link href="../docs-assets/Contents.css" rel="stylesheet" rev="stylesheet" type="text/css">
|
|
<link href="../docs-assets/Progress.css" rel="stylesheet" rev="stylesheet" type="text/css">
|
|
<link href="../docs-assets/Navigation.css" rel="stylesheet" rev="stylesheet" type="text/css">
|
|
<link href="../docs-assets/Fonts.css" rel="stylesheet" rev="stylesheet" type="text/css">
|
|
<link href="../docs-assets/Base.css" rel="stylesheet" rev="stylesheet" type="text/css">
|
|
<script>
|
|
function togglePopup(material_id) {
|
|
var popup = document.getElementById(material_id);
|
|
popup.classList.toggle("show");
|
|
}
|
|
</script>
|
|
|
|
<link href="../docs-assets/Popups.css" rel="stylesheet" rev="stylesheet" type="text/css">
|
|
<link href="../docs-assets/Colours.css" rel="stylesheet" rev="stylesheet" type="text/css">
|
|
|
|
</head>
|
|
<body class="commentary-font">
|
|
<nav role="navigation">
|
|
<h1><a href="../index.html">
|
|
<img src="../docs-assets/Inform.png" height=72">
|
|
</a></h1>
|
|
<ul><li><a href="../index.html">home</a></li>
|
|
</ul><h2>Compiler</h2><ul>
|
|
<li><a href="../structure.html">structure</a></li>
|
|
<li><a href="../inbuildn.html">inbuild</a></li>
|
|
<li><a href="../inform7n.html">inform7</a></li>
|
|
<li><a href="../intern.html">inter</a></li>
|
|
<li><a href="../services.html">services</a></li>
|
|
<li><a href="../secrets.html">secrets</a></li>
|
|
</ul><h2>Other Tools</h2><ul>
|
|
<li><a href="../inblorbn.html">inblorb</a></li>
|
|
<li><a href="../indocn.html">indoc</a></li>
|
|
<li><a href="../inform6.html">inform6</a></li>
|
|
<li><a href="../inpolicyn.html">inpolicy</a></li>
|
|
</ul><h2>Resources</h2><ul>
|
|
<li><a href="../extensions.html">extensions</a></li>
|
|
<li><a href="../kits.html">kits</a></li>
|
|
</ul><h2>Repository</h2><ul>
|
|
<li><a href="https://github.com/ganelson/inform"><img src="../docs-assets/github.png" height=18> github</a></li>
|
|
</ul><h2>Related Projects</h2><ul>
|
|
<li><a href="../../../inweb/index.html">inweb</a></li>
|
|
<li><a href="../../../intest/index.html">intest</a></li>
|
|
|
|
</ul>
|
|
</nav>
|
|
<main role="main">
|
|
<!--Weave of 'Backdrop Instances' generated by Inweb-->
|
|
<div class="breadcrumbs">
|
|
<ul class="crumbs"><li><a href="../index.html">Home</a></li><li><a href="../inform7n.html">Inform7</a></li><li><a href="index.html">runtime</a></li><li><a href="index.html#5">Chapter 5: Provision Submodules</a></li><li><b>Backdrop Instances</b></li></ul></div>
|
|
<p class="purpose">Some additions to an _instance package for instances of the kind "backdrop".</p>
|
|
|
|
<ul class="toc"><li><a href="5-bi.html#SP1">§1. Compilation data</a></li><li><a href="5-bi.html#SP2">§2. Compilation</a></li></ul><hr class="tocbar">
|
|
|
|
<p class="commentary firstcommentary"><a id="SP1" class="paragraph-anchor"></a><b>§1. Compilation data. </b>This additional data is present only if the "backdrops" feature is active:
|
|
</p>
|
|
|
|
<pre class="displayed-code all-displayed-code code-font">
|
|
<span class="identifier-syntax">inter_name</span><span class="plain-syntax"> *</span><span class="function-syntax">RTBackdropInstances::found_in_val</span><span class="plain-syntax">(</span><span class="identifier-syntax">instance</span><span class="plain-syntax"> *</span><span class="identifier-syntax">I</span><span class="plain-syntax">, </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">many</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">BACKDROPS_DATA</span><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">)-></span><span class="identifier-syntax">found_in_fn_iname</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">)</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">BACKDROPS_DATA</span><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">)-></span><span class="identifier-syntax">found_in_fn_iname</span><span class="plain-syntax"> =</span>
|
|
<span class="plain-syntax"> </span><a href="2-hrr.html#SP12" class="function-link"><span class="function-syntax">Hierarchy::make_iname_in</span></a><span class="plain-syntax">(</span><span class="constant-syntax">BACKDROP_FOUND_IN_FN_HL</span><span class="plain-syntax">, </span><a href="5-ins.html#SP1" class="function-link"><span class="function-syntax">RTInstances::package</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">));</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">BACKDROPS_DATA</span><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">)-></span><span class="identifier-syntax">many_places</span><span class="plain-syntax"> = </span><span class="identifier-syntax">many</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">BACKDROPS_DATA</span><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">)-></span><span class="identifier-syntax">found_in_fn_iname</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax">}</span>
|
|
</pre>
|
|
<p class="commentary firstcommentary"><a id="SP2" class="paragraph-anchor"></a><b>§2. Compilation. </b>We add a <span class="extract"><span class="extract-syntax">found_in</span></span> function to test whether the given backdrop is found in
|
|
the current <span class="extract"><span class="extract-syntax">location</span></span> or not.
|
|
</p>
|
|
|
|
<pre class="displayed-code all-displayed-code code-font">
|
|
<span class="reserved-syntax">void</span><span class="plain-syntax"> </span><span class="function-syntax">RTBackdropInstances::compile_extra</span><button class="popup" onclick="togglePopup('usagePopup1')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup1">Usage of <span class="code-font"><span class="function-syntax">RTBackdropInstances::compile_extra</span></span>:<br/>Instances - <a href="5-ins.html#SP4">§4</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">instance</span><span class="plain-syntax"> *</span><span class="identifier-syntax">I</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> ((</span><span class="identifier-syntax">K_backdrop</span><span class="plain-syntax">) && (</span><span class="identifier-syntax">Instances::of_kind</span><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">, </span><span class="identifier-syntax">K_backdrop</span><span class="plain-syntax">)) &&</span>
|
|
<span class="plain-syntax"> (</span><span class="identifier-syntax">BACKDROPS_DATA</span><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">)-></span><span class="identifier-syntax">found_in_fn_iname</span><span class="plain-syntax">)) {</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">BACKDROPS_DATA</span><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">)-></span><span class="identifier-syntax">many_places</span><span class="plain-syntax">)</span>
|
|
<span class="plain-syntax"> </span><span class="named-paragraph-container code-font"><a href="5-bi.html#SP2_1" class="named-paragraph-link"><span class="named-paragraph">The object is found in many rooms or in whole regions</span><span class="named-paragraph-number">2.1</span></a></span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">else</span>
|
|
<span class="plain-syntax"> </span><span class="named-paragraph-container code-font"><a href="5-bi.html#SP2_2" class="named-paragraph-link"><span class="named-paragraph">The object is found nowhere</span><span class="named-paragraph-number">2.2</span></a></span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> }</span>
|
|
<span class="plain-syntax">}</span>
|
|
</pre>
|
|
<p class="commentary firstcommentary"><a id="SP2_1" class="paragraph-anchor"></a><b>§2.1. </b><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">The object is found in many rooms or in whole regions</span><span class="named-paragraph-number">2.1</span></span><span class="comment-syntax"> =</span>
|
|
</p>
|
|
|
|
<pre class="displayed-code all-displayed-code code-font">
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">packaging_state</span><span class="plain-syntax"> </span><span class="identifier-syntax">save</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Functions::begin</span><span class="plain-syntax">(</span><span class="identifier-syntax">BACKDROPS_DATA</span><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">)-></span><span class="identifier-syntax">found_in_fn_iname</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">inference</span><span class="plain-syntax"> *</span><span class="identifier-syntax">inf</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">POSITIVE_KNOWLEDGE_LOOP</span><span class="plain-syntax">(</span><span class="identifier-syntax">inf</span><span class="plain-syntax">, </span><span class="identifier-syntax">Instances::as_subject</span><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">), </span><span class="identifier-syntax">found_in_inf</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">instance</span><span class="plain-syntax"> *</span><span class="identifier-syntax">loc</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Backdrops::get_inferred_location</span><span class="plain-syntax">(</span><span class="identifier-syntax">inf</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><a href="2-ec.html#SP14" class="function-link"><span class="function-syntax">EmitCode::inv</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">IF_BIP</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><a href="2-ec.html#SP3" class="function-link"><span class="function-syntax">EmitCode::down</span></a><span class="plain-syntax">();</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> ((</span><span class="identifier-syntax">K_region</span><span class="plain-syntax">) && (</span><span class="identifier-syntax">Instances::of_kind</span><span class="plain-syntax">(</span><span class="identifier-syntax">loc</span><span class="plain-syntax">, </span><span class="identifier-syntax">K_region</span><span class="plain-syntax">))) {</span>
|
|
<span class="plain-syntax"> </span><a href="2-ec.html#SP14" class="function-link"><span class="function-syntax">EmitCode::call</span></a><span class="plain-syntax">(</span><a href="2-hrr.html#SP11" class="function-link"><span class="function-syntax">Hierarchy::find</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">TESTREGIONALCONTAINMENT_HL</span><span class="plain-syntax">));</span>
|
|
<span class="plain-syntax"> </span><a href="2-ec.html#SP3" class="function-link"><span class="function-syntax">EmitCode::down</span></a><span class="plain-syntax">();</span>
|
|
<span class="plain-syntax"> </span><a href="2-ec.html#SP8" class="function-link"><span class="function-syntax">EmitCode::val_iname</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">K_object</span><span class="plain-syntax">, </span><a href="2-hrr.html#SP11" class="function-link"><span class="function-syntax">Hierarchy::find</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">LOCATION_HL</span><span class="plain-syntax">));</span>
|
|
<span class="plain-syntax"> </span><a href="2-ec.html#SP8" class="function-link"><span class="function-syntax">EmitCode::val_iname</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">K_object</span><span class="plain-syntax">, </span><a href="5-ins.html#SP1" class="function-link"><span class="function-syntax">RTInstances::value_iname</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">loc</span><span class="plain-syntax">));</span>
|
|
<span class="plain-syntax"> </span><a href="2-ec.html#SP3" class="function-link"><span class="function-syntax">EmitCode::up</span></a><span class="plain-syntax">();</span>
|
|
<span class="plain-syntax"> } </span><span class="reserved-syntax">else</span><span class="plain-syntax"> {</span>
|
|
<span class="plain-syntax"> </span><a href="2-ec.html#SP14" class="function-link"><span class="function-syntax">EmitCode::inv</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">EQ_BIP</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><a href="2-ec.html#SP3" class="function-link"><span class="function-syntax">EmitCode::down</span></a><span class="plain-syntax">();</span>
|
|
<span class="plain-syntax"> </span><a href="2-ec.html#SP8" class="function-link"><span class="function-syntax">EmitCode::val_iname</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">K_object</span><span class="plain-syntax">, </span><a href="2-hrr.html#SP11" class="function-link"><span class="function-syntax">Hierarchy::find</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">LOCATION_HL</span><span class="plain-syntax">));</span>
|
|
<span class="plain-syntax"> </span><a href="2-ec.html#SP8" class="function-link"><span class="function-syntax">EmitCode::val_iname</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">K_object</span><span class="plain-syntax">, </span><a href="5-ins.html#SP1" class="function-link"><span class="function-syntax">RTInstances::value_iname</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">loc</span><span class="plain-syntax">));</span>
|
|
<span class="plain-syntax"> </span><a href="2-ec.html#SP3" class="function-link"><span class="function-syntax">EmitCode::up</span></a><span class="plain-syntax">();</span>
|
|
<span class="plain-syntax"> }</span>
|
|
<span class="plain-syntax"> </span><a href="2-ec.html#SP5" class="function-link"><span class="function-syntax">EmitCode::code</span></a><span class="plain-syntax">();</span>
|
|
<span class="plain-syntax"> </span><a href="2-ec.html#SP3" class="function-link"><span class="function-syntax">EmitCode::down</span></a><span class="plain-syntax">();</span>
|
|
<span class="plain-syntax"> </span><a href="2-ec.html#SP15" class="function-link"><span class="function-syntax">EmitCode::rtrue</span></a><span class="plain-syntax">();</span>
|
|
<span class="plain-syntax"> </span><a href="2-ec.html#SP3" class="function-link"><span class="function-syntax">EmitCode::up</span></a><span class="plain-syntax">();</span>
|
|
<span class="plain-syntax"> </span><a href="2-ec.html#SP3" class="function-link"><span class="function-syntax">EmitCode::up</span></a><span class="plain-syntax">();</span>
|
|
<span class="plain-syntax"> </span><a href="2-ec.html#SP15" class="function-link"><span class="function-syntax">EmitCode::rfalse</span></a><span class="plain-syntax">();</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">break</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> }</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">Functions::end</span><span class="plain-syntax">(</span><span class="identifier-syntax">save</span><span class="plain-syntax">);</span>
|
|
</pre>
|
|
<ul class="endnotetexts"><li>This code is used in <a href="5-bi.html#SP2">§2</a>.</li></ul>
|
|
<p class="commentary firstcommentary"><a id="SP2_2" class="paragraph-anchor"></a><b>§2.2. </b><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">The object is found nowhere</span><span class="named-paragraph-number">2.2</span></span><span class="comment-syntax"> =</span>
|
|
</p>
|
|
|
|
<pre class="displayed-code all-displayed-code code-font">
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">packaging_state</span><span class="plain-syntax"> </span><span class="identifier-syntax">save</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Functions::begin</span><span class="plain-syntax">(</span><span class="identifier-syntax">BACKDROPS_DATA</span><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">)-></span><span class="identifier-syntax">found_in_fn_iname</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><a href="2-ec.html#SP15" class="function-link"><span class="function-syntax">EmitCode::rfalse</span></a><span class="plain-syntax">();</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">Functions::end</span><span class="plain-syntax">(</span><span class="identifier-syntax">save</span><span class="plain-syntax">);</span>
|
|
</pre>
|
|
<ul class="endnotetexts"><li>This code is used in <a href="5-bi.html#SP2">§2</a>.</li></ul>
|
|
<nav role="progress"><div class="progresscontainer">
|
|
<ul class="progressbar"><li class="progressprev"><a href="5-ins.html">❮</a></li><li class="progresschapter"><a href="P-wtmd.html">P</a></li><li class="progresschapter"><a href="1-rm.html">1</a></li><li class="progresschapter"><a href="2-hrr.html">2</a></li><li class="progresschapter"><a href="3-gm.html">3</a></li><li class="progresschapter"><a href="4-enc.html">4</a></li><li class="progresscurrentchapter">5</li><li class="progresssection"><a href="5-act.html">act</a></li><li class="progresssection"><a href="5-adj.html">adj</a></li><li class="progresssection"><a href="5-chr.html">chr</a></li><li class="progresssection"><a href="5-cnj.html">cnj</a></li><li class="progresssection"><a href="5-eqt.html">eqt</a></li><li class="progresssection"><a href="5-ins.html">ins</a></li><li class="progresscurrent">bi</li><li class="progresssection"><a href="5-di.html">di</a></li><li class="progresssection"><a href="5-ri.html">ri</a></li><li class="progresssection"><a href="5-si.html">si</a></li><li class="progresssection"><a href="5-mlt.html">mlt</a></li><li class="progresssection"><a href="5-tbl.html">tbl</a></li><li class="progresssection"><a href="5-tc.html">tc</a></li><li class="progresssection"><a href="5-dbi.html">dbi</a></li><li class="progresssection"><a href="5-dli.html">dli</a></li><li class="progresssection"><a href="5-dci.html">dci</a></li><li class="progresssection"><a href="5-rls.html">rls</a></li><li class="progresssection"><a href="5-rlb.html">rlb</a></li><li class="progresssection"><a href="5-vrb.html">vrb</a></li><li class="progresssection"><a href="5-prp.html">prp</a></li><li class="progresssection"><a href="5-rlt.html">rlt</a></li><li class="progresssection"><a href="5-lp.html">lp</a></li><li class="progresssection"><a href="5-kc.html">kc</a></li><li class="progresssection"><a href="5-ki.html">ki</a></li><li class="progresssection"><a href="5-act2.html">act2</a></li><li class="progresssection"><a href="5-nap.html">nap</a></li><li class="progresssection"><a href="5-ts.html">ts</a></li><li class="progresschapter"><a href="6-bd.html">6</a></li><li class="progresschapter"><a href="7-cg.html">7</a></li><li class="progressnext"><a href="5-di.html">❯</a></li></ul></div>
|
|
</nav><!--End of weave-->
|
|
|
|
</main>
|
|
</body>
|
|
</html>
|
|
|