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<title>Grid.flood — Ludic</title>
<meta name="description" content="Every passable cell reachable from (x,y), 4-connected, in BFS order.">
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<div class="crumbs"><a href="api.html">API Reference</a> <span>›</span> <a href="ns-grid.html">Grid</a> <span>›</span> <span class="here">Grid.flood</span></div>
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<span class="kind-badge kind-method">method</span>
<h1 id="top">Grid.flood</h1>
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<code class="sig">Grid.flood(x, y, wall) -&gt; []Cell</code>
<div class="desc"><p>Returns every passable cell reachable from <code>(x, y)</code> by 4-connected steps (up/down/left/right over non-<code>wall</code> cells), in breadth-first order — for connectivity checks, filling a room, or measuring an enclosed area. Empty if the start itself is blocked.</p></div>
<div class="params"><h2>Parameters</h2><div class="param" id="param-wall"><code class="pname">wall</code><span class="pdesc">the impassable tile char</span></div></div>
<div class="examples"><h2>Example</h2><pre data-lang="ludic">program Demo {
handler H phase Update {
let region = Grid.flood(2, 2, '#')
print(len(region))
}
}</pre></div>
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