From 761a3172bf4c15aed3836e4d1cd6f815b651b0e0 Mon Sep 17 00:00:00 2001
From: LLLL Colonq <llll@colonq>
Date: Sat, 29 Aug 2026 04:06:51 -0400
Subject: Fix

---
 2026/games/the0x539/crafting.js | 98 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 98 insertions(+)
 create mode 100644 2026/games/the0x539/crafting.js

(limited to '2026/games/the0x539/crafting.js')

diff --git a/2026/games/the0x539/crafting.js b/2026/games/the0x539/crafting.js
new file mode 100644
index 0000000..7a61cfc
--- /dev/null
+++ b/2026/games/the0x539/crafting.js
@@ -0,0 +1,98 @@
+import { recipes, amounts } from './data.js';
+
+export function getRecipeOutput() {
+  const input = readGrid();
+  if (input.length === 0) return null;
+
+  const mirroredInput = input.map(row => row.toReversed());
+
+  for (const [item, recipe] of Object.entries(recipes)) {
+    const isMatch = compare(input, recipe) || compare(mirroredInput, recipe);
+    if (!isMatch) continue;
+
+    const amount = amounts[item] ?? 1;
+    return [item, amount];
+  }
+
+  return null;
+}
+
+function last(arr) {
+  return arr[arr.length - 1];
+}
+
+function isSymmetric(grid) {
+  return grid.every(row => row[0] === last(row));
+}
+
+function readGrid() {
+  const cells = document.querySelectorAll('crafting-grid > inventory-cell');
+
+  const rows = [];
+  for (let y = 0; y < 3; y++) {
+    const row = [];
+    for (let x = 0; x < 3; x++) {
+      let item = null;
+      const stack = cells[3 * y + x].firstElementChild;
+      if (!!stack) {
+        item = stack.getAttribute('data-item');
+      }
+      row.push(item);
+    }
+    rows.push(row);
+  }
+
+  trimGrid(rows);
+
+  return rows;
+}
+
+function trimGrid(grid) {
+  if (grid.flat().every(v => v === null)) {
+    while (grid.length > 0) {
+      grid.pop();
+    }
+    return;
+  }
+
+  // it is now established that the grid is non-empty,
+  // so there will always be at least one row+col
+  
+  // trim blank rows from bottom
+  while (last(grid).every(v => v === null)) {
+    grid.pop();
+  }
+
+  // trim blank rows from top
+  while (grid[0].every(v => v === null)) {
+    grid.shift();
+  }
+
+  // trim blank columns from right
+  while (grid.every(row => last(row) === null)) {
+    for (const row of grid) {
+      row.pop();
+    }
+  }
+
+  // trim blank columns from left
+  while (grid.every(row => row[0] === null)) {
+    for (const row of grid) {
+      row.shift();
+    }
+  }
+}
+
+function compare(a, b) {
+  if (a.length !== b.length) return false;
+
+  for (let y = 0; y < a.length; y++) {
+    if (a[y].length !== b[y].length) return false;
+    
+    for (let x = 0; x < a[y].length; x++) {
+      if (a[y][x] !== b[y][x]) return false;
+    }
+  }
+
+  return true;
+}
-- 
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