fix: more 32nd bit bugs

loks0n · Apr 2, 2023 · 4c1ca50 · 4c1ca50
1 parent 8618b77
commit 4c1ca50
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Showing 2 changed files with 31 additions and 1 deletion.
diff --git a/src/english/engine.test.ts b/src/english/engine.test.ts
@@ -214,6 +214,36 @@ describe('tricky move', () => {
   });
 });
 
+describe('tricky move 2', () => {
+  let engine: EnglishDraughtsEngine;
+
+  beforeEach(() => {
+    engine = EngineFactory.setup({
+      board: {
+        light: S[12],
+        dark: S[31],
+        king: 0,
+      },
+      player: DraughtsPlayer.DARK,
+    });
+  });
+
+  test('correct moves', () => {
+    assert.sameDeepMembers(engine.moves, [
+      {
+        origin: S[31],
+        destination: S[30],
+        captures: 0,
+      },
+      {
+        origin: S[31],
+        destination: S[24],
+        captures: 0,
+      },
+    ]);
+  });
+});
+
 describe('simple jump', () => {
   let engine: EnglishDraughtsEngine;
 

diff --git a/src/english/utils.ts b/src/english/utils.ts
@@ -27,7 +27,7 @@ export function decomposeBits(value: number): number[] {
   const split: number[] = [];
   for (let bit = 1; value; bit <<= 1) {
     if (value & bit) {
-      split.push(bit);
+      split.push(bit >>> 0);
       value ^= bit;
     }
   }