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2.2 KiB
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35 lines
No EOL
2.2 KiB
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<title>Camera.follow — Ludic</title>
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<meta name="description" content="Ease the camera toward centring a target point.">
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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-camera.html">Camera</a> <span>›</span> <span class="here">Camera.follow</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">Camera.follow</h1>
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</div>
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<code class="sig">Camera.follow(x, y, lerp)</code>
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<div class="desc"><p>Moves the camera a fraction <code>lerp</code> of the way toward centring the world point <code>(x, y)</code> on screen. <code>lerp</code> is a <code>fixed</code> in <code>0.0</code>..<code>1.0</code>: <code>0</code> holds still, a small value trails smoothly behind a moving target, <code>1.0</code> snaps it centred. Call it each frame with the target's position for a classic smooth-follow camera. Deterministic.</p></div>
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<div class="params"><h2>Parameters</h2><div class="param" id="param-lerp"><code class="pname">lerp</code><span class="pdesc">how far to move this frame (a <code>fixed</code>, 0..1)</span></div></div>
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<div class="examples"><h2>Example</h2><pre data-lang="ludic">program Demo {
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property Position { x: int = 0, y: int = 0 }
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model Player { Position }
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handler DrawWorld phase Render {
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Camera.follow(Position.x, Position.y, fixed(1) / fixed(8)) # smooth trail
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Screen.show()
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}
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}</pre></div>
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