Fix Eightpieces, add some simple variants, add a basic variants classification instea...

[vchess.git] / client / src / variants / Rookpawns.js

diff --git a/client/src/variants/Rookpawns.js b/client/src/variants/Rookpawns.js
new file mode 100644 (file)
index 0000000..abbd785
--- /dev/null
+++ b/client/src/variants/Rookpawns.js
@@ -0,0 +1,51 @@
+import { ChessRules } from "@/base_rules";
+
+export class RookpawnsRules extends ChessRules {
+  static get PawnSpecs() {
+    return Object.assign(
+      {},
+      ChessRules.PawnSpecs,
+      // The promotion piece doesn't matter, the game is won
+      { promotions: [V.QUEEN] }
+    );
+  }
+
+  static get HasFlags() {
+    return false;
+  }
+
+  scanKings() {}
+
+  static GenRandInitFen() {
+    return "8/ppppp3/8/8/8/8/8/7R w 0 -";
+  }
+
+  filterValid(moves) {
+    return moves;
+  }
+
+  getCheckSquares() {
+    return [];
+  }
+
+  getCurrentScore() {
+    // If all pieces of some color vanished, the opponent wins:
+    for (let c of ['w', 'b']) {
+      if (this.board.every(b => b.every(cell => !cell || cell[0] != c)))
+        return (c == 'w' ? "0-1" : "1-0");
+    }
+    // Did a black pawn promote? Can the rook take it?
+    const qIdx = this.board[7].findIndex(cell => cell[1] == V.QUEEN);
+    if (qIdx >= 0 && !super.isAttackedByRook([7, qIdx], 'w'))
+      return "0-1";
+    if (!this.atLeastOneMove()) return "1/2";
+    return "*";
+  }
+
+  postPlay() {}
+  postUndo() {}
+
+  static get SEARCH_DEPTH() {
+    return 4;
+  }
+};