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<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Grid — Ludic</title>
<meta name="description" content="Tile geometry and pathfinding over the Map tilemap.">
<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> <span class="here">Grid</span></div>
<div class="item-head"><span class="kind-badge kind-namespace">namespace</span><h1 id="top">Grid</h1></div>
<p class="ns-blurb">Tile geometry and pathfinding over the <a href="map"><code>Map</code></a> tilemap. A cell is passable unless it is out of bounds or holds the caller's <code>wall</code> tile (a char code, e.g. <code>'#'</code>), so any impassable glyph works. Everything is integer and deterministic — same map and query reproduce the same path every run. <a href="grid-line"><code>Grid.line</code></a>/<a href="grid-flood"><code>Grid.flood</code></a>/<a href="grid-a_star"><code>Grid.a_star</code></a> return <code>Cell</code> slices (index them with <code>len</code> / <code>[i]</code>; each cell has <code>.x</code> and <code>.y</code>).</p>
<div class="ns-methods"><a class="ns-method" href="grid-line.html"><code class="nm-sig">Grid.line(x0, y0, x1, y1) -&gt; []Cell</code><span class="nm-tip">Every cell a straight line from (x0,y0) to (x1,y1) crosses (Bresenham).</span></a><a class="ns-method" href="grid-blocked.html"><code class="nm-sig">Grid.blocked(x, y, wall) -&gt; bool</code><span class="nm-tip">True if the cell is out of bounds or holds the wall tile.</span></a><a class="ns-method" href="grid-line_of_sight.html"><code class="nm-sig">Grid.line_of_sight(x0, y0, x1, y1, wall) -&gt; bool</code><span class="nm-tip">True if the straight line between two cells crosses no wall.</span></a><a class="ns-method" href="grid-flood.html"><code class="nm-sig">Grid.flood(x, y, wall) -&gt; []Cell</code><span class="nm-tip">Every passable cell reachable from (x,y), 4-connected, in BFS order.</span></a><a class="ns-method" href="grid-a_star.html"><code class="nm-sig">Grid.a_star(x0, y0, x1, y1, wall) -&gt; []Cell</code><span class="nm-tip">The shortest 4-connected path between two cells (A*), or an empty list.</span></a></div>
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