45 lines
No EOL
2.6 KiB
HTML
45 lines
No EOL
2.6 KiB
HTML
<!doctype html>
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<html lang="en">
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<head>
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<meta charset="utf-8">
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<meta name="viewport" content="width=device-width, initial-scale=1">
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<title>@Handles — Ludic</title>
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<meta name="description" content="Declarative hint naming the event or subsystem a handler is responsible for.">
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<link rel="stylesheet" href="base.css">
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<link rel="stylesheet" href="docs.css">
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</head>
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<body>
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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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<main class="wrap item">
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<div class="crumbs"><a href="api.html">API Reference</a> <span>›</span> <a href="api.html#annotations">Annotations</a> <span>›</span> <span class="here">@Handles</span></div>
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<div class="item-head">
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<span class="kind-badge kind-annotation">annotation</span>
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<h1 id="top">@Handles</h1>
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</div>
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<code class="sig">@Handles(Event) handler Name { … }</code>
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<div class="desc"><p><code>@Handles</code> is a declarative annotation that names the event or subsystem a handler (or a whole program) is responsible for. The parser accepts and records it as metadata for analysis and tooling — it does not by itself wire up dispatch, so it documents intent rather than driving execution. When you want a handler to actually run in response to an event, use <code>@On(Event)</code>, which registers the listener; <code>@Handles</code> is the companion label that makes ownership of an event legible across a modular codebase. Keep the named symbol a real event or system so the annotation stays meaningful.</p></div>
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<div class="examples"><h2>Example</h2><pre data-lang="ludic">program CombatModule {
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property Health { current: int = 100 }
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model Enemy { Health }
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event DamageDealt { amount: int = 0 }
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@Handles(DamageDealt) # documents this handler's responsibility
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@On(DamageDealt) handler ApplyDamage { # @On does the actual dispatch wiring
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for (Health) in query [Health, {Enemy}] {
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Health.current = Health.current - amount
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}
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}
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entry {
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spawn Enemy { Health { current: 100 } }
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emit DamageDealt(amount: 25)
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}
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}</pre></div>
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<a class="back" href="api.html">← All symbols</a>
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</main>
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<script src="ludic-highlight.js"></script>
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<script>Ludic.highlightAll(); Ludic.installCards(); Ludic.flashTarget();</script>
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</body></html> |