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+<title>Map.size — Ludic</title>
+<meta name="description" content="Set the tilemap dimensions in cells before filling rows.">
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+  <div class="crumbs"><a href="api.html">API Reference</a> <span>›</span> <a href="ns-map.html">Map — tilemap</a> <span>›</span> <span class="here">Map.size</span></div>
+  <div class="item-head">
+    <span class="kind-badge kind-method">method</span>
+    <h1 id="top">Map.size</h1>
+  </div>
+  <code class="sig">Map.size(width, height)</code>
+  <div class="desc"><p>Declares the dimensions of the built-in tilemap, in cells (not pixels). Call it once during a <code>Start</code>-phase handler before you fill the map with <code>Map.row</code>, so the runtime knows how many columns and rows to allocate. The tilemap is a lightweight, character-based grid the whole program can read with <code>Map.tile</code>, which is handy for static level geometry such as walls and floors. Reads outside these bounds are treated as a wall character, so the edge of the world is solid for free.</p></div>
+  <div class="params"><h2>Parameters</h2><div class="param" id="param-width"><code class="pname">width</code><span class="pdesc">the map width in cells (columns)</span></div><div class="param" id="param-height"><code class="pname">height</code><span class="pdesc">the map height in cells (rows)</span></div></div>
+  <div class="examples"><h2>Example</h2><pre data-lang="ludic">program LevelBounds {
+  const GRID_WIDTH: int = 12
+  const GRID_HEIGHT: int = 4
+  const TILE_SIZE: int = 16
+
+  handler BuildLevel phase Start {
+    Map.size(width: GRID_WIDTH, height: GRID_HEIGHT)
+    Map.row(y: 0, cells: "############")
+    Map.row(y: 1, cells: "#..........#")
+    Map.row(y: 2, cells: "#..........#")
+    Map.row(y: 3, cells: "############")
+  }
+
+  handler DrawWorld phase Render {
+    Screen.clear(Color.MidnightBlue)
+    for row in 0 .. GRID_HEIGHT {
+      for column in 0 .. GRID_WIDTH {
+        if Map.tile(x: column, y: row) == '#' {
+          Screen.fill_rectangle(
+            x: column * TILE_SIZE,
+            y: row * TILE_SIZE,
+            width: TILE_SIZE,
+            height: TILE_SIZE,
+            color: Color.White)
+        }
+      }
+    }
+    Screen.show()
+  }
+}</pre></div>
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