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36 lines
No EOL
2.5 KiB
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<title>Reflect.get — Ludic</title>
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<meta name="description" content="Read one field of an entity by (prop, field) id.">
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<header class="nav"><div class="wrap nav-in"><a class="brand" href="index.html"><span class="logo">L</span> Ludic</a><button class="nav-toggle" aria-label="Toggle menu" aria-expanded="false">☰</button><nav class="nav-links"><a href="index.html">Home</a><a href="api.html">API Reference</a><a class="nav-cta" href="https://git.workshopsoft.io/workshopsoft/ludic">Source ↗</a></nav></div></header>
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<div class="crumbs"><a href="api.html">API Reference</a> <span>›</span> <a href="ns-reflect.html">Reflect</a> <span>›</span> <span class="here">Reflect.get</span></div>
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<div class="item-head">
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<span class="kind-badge kind-method">method</span>
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<h1 id="top">Reflect.get</h1>
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</div>
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<code class="sig">Reflect.get(entity, prop, field) -> int</code>
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<div class="desc"><p>Reads the value of field <code>field</code> of property <code>prop</code> on <code>entity</code>, as an <code>int</code>. A <code>fixed</code> field comes back as its raw Q16.16 bits (the same integer <code>fixed</code> stores), so a generic reader can move it without interpreting it. Same as <a href="world-get"><code>World.get</code></a>, under the reflection namespace.</p></div>
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<div class="params"><h2>Parameters</h2><div class="param" id="param-entity"><code class="pname">entity</code><span class="pdesc">the entity to read</span></div><div class="param" id="param-prop"><code class="pname">prop</code><span class="pdesc">a property id (from <a href="reflect-prop"><code>Reflect.prop</code></a>)</span></div><div class="param" id="param-field"><code class="pname">field</code><span class="pdesc">a field id (from <a href="reflect-field"><code>Reflect.field</code></a>)</span></div></div>
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<div class="examples"><h2>Example</h2><pre data-lang="ludic">program Demo {
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property Health { hp: int = 0 }
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model Unit { Health }
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entry {
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spawn Unit { Health { hp: 7 } }
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let H = Reflect.prop("Health")
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print(Reflect.get(0, H, Reflect.field(H, "hp"))) # 7
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}
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}</pre></div>
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