38 lines
No EOL
2.2 KiB
HTML
38 lines
No EOL
2.2 KiB
HTML
<!doctype html>
|
||
<html lang="en">
|
||
<head>
|
||
<meta charset="utf-8">
|
||
<meta name="viewport" content="width=device-width, initial-scale=1">
|
||
<title>Screen.camera — Ludic</title>
|
||
<meta name="description" content="Set the world-space camera offset for the draw path.">
|
||
<link rel="stylesheet" href="base.css">
|
||
<link rel="stylesheet" href="docs.css">
|
||
</head>
|
||
<body>
|
||
<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>
|
||
<main class="wrap item">
|
||
<div class="crumbs"><a href="api.html">API Reference</a> <span>›</span> <a href="ns-screen.html">Screen — drawing</a> <span>›</span> <span class="here">Screen.camera</span></div>
|
||
<div class="item-head">
|
||
<span class="kind-badge kind-method">method</span>
|
||
<h1 id="top">Screen.camera</h1>
|
||
</div>
|
||
<code class="sig">Screen.camera(x, y)</code>
|
||
<div class="desc"><p>Sets a camera offset applied to every draw: a world point <code>(wx, wy)</code> lands on screen at <code>(wx - x, wy - y)</code>. Move it to scroll the world under a fixed viewport. The camera moves <em>everything</em> drawn, so reset it to <code>(0, 0)</code> before drawing a fixed HUD. Same control as <a href="camera-set"><code>Camera.set</code></a>. Deterministic.</p></div>
|
||
|
||
<div class="examples"><h2>Example</h2><pre data-lang="ludic">program Demo {
|
||
property Position { x: int = 0, y: int = 0 }
|
||
model Player { Position }
|
||
handler DrawWorld phase Render {
|
||
Screen.camera(Position.x - 160, Position.y - 120) # centre on the player
|
||
Screen.fill_rectangle(x: 0, y: 0, width: 16, height: 16, color: Color.Red)
|
||
Screen.camera(0, 0) # HUD in screen space
|
||
Screen.draw_text(x: 4, y: 4, text: "SCORE", color: Color.White, scale: 1)
|
||
Screen.show()
|
||
}
|
||
}</pre></div>
|
||
|
||
<a class="back" href="api.html">← All symbols</a>
|
||
</main>
|
||
<script src="ludic-highlight.js"></script>
|
||
<script>Ludic.highlightAll(); Ludic.installCards(); Ludic.flashTarget();</script>
|
||
</body></html> |