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

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

diff --git a/client/src/variants/Discoduel.js b/client/src/variants/Discoduel.js
new file mode 100644 (file)
index 0000000..ea522df
--- /dev/null
+++ b/client/src/variants/Discoduel.js
@@ -0,0 +1,50 @@
+import { ChessRules } from "@/base_rules";
+
+export class DiscoduelRules extends ChessRules {
+  static get PawnSpecs() {
+    return Object.assign(
+      {},
+      ChessRules.PawnSpecs,
+      { promotions: [V.PAWN] }
+    );
+  }
+
+  static get HasFlags() {
+    return false;
+  }
+
+  scanKings() {}
+
+  static GenRandInitFen() {
+    return "1n4n1/8/8/8/8/8/PPPPPPPP/8 w 0 -";
+  }
+
+  getPotentialMovesFrom(sq) {
+    const moves = super.getPotentialMovesFrom(sq);
+    if (this.turn == 'b')
+      // Prevent pawn captures on last rank:
+      return moves.filter(m => m.vanish.length == 1 || m.vanish[1].x != 0);
+    return moves;
+  }
+
+  filterValid(moves) {
+    return moves;
+  }
+
+  getCheckSquares() {
+    return [];
+  }
+
+  getCurrentScore() {
+    // No real winning condition (promotions count...)
+    if (!this.atLeastOneMove()) return "1/2";
+    return "*";
+  }
+
+  postPlay() {}
+  postUndo() {}
+
+  static get SEARCH_DEPTH() {
+    return 4;
+  }
+};