Fix Dobutsu, start draft of Relayup

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

diff --git a/client/src/variants/Relayup.js b/client/src/variants/Relayup.js
new file mode 100644 (file)
index 0000000..4b85fde
--- /dev/null
+++ b/client/src/variants/Relayup.js
@@ -0,0 +1,59 @@
+import { ChessRules } from "@/base_rules";
+
+// Pawns relayed by one square at a time (but with relaying pioece movements)
+// diff from https://www.chessvariants.com/rules/relay-chess ==> new name
+export class RelayupRules extends ChessRules {
+
+  static get PawnSpecs() {
+    return Object.assign(
+      {},
+      ChessRules.PawnSpecs,
+      { twoSquares: false }
+    );
+  }
+
+  static get HasFlags() {
+    return false;
+  }
+
+  static get HasEnpassant() {
+    return false;
+  }
+
+  getPotentialMovesFrom([x, y]) {
+    let moves = super.getPotentialMovesFrom([x, y]);
+
+    // Expand possible moves if guarded by friendly pieces:
+    // --> Pawns cannot be promoted through a relaying move (thus 8th rank forbidden)
+    // TODO
+
+    return moves;
+  }
+
+  getNotation(move) {
+    // Translate final and initial square
+    const initSquare = V.CoordsToSquare(move.start);
+    const finalSquare = V.CoordsToSquare(move.end);
+    const piece = this.getPiece(move.start.x, move.start.y);
+
+    // Since pieces and pawns could move like knight,
+    // indicate start and end squares
+    let notation =
+      piece.toUpperCase() +
+      initSquare +
+      (move.vanish.length > move.appear.length ? "x" : "") +
+      finalSquare
+
+    if (
+      piece == V.PAWN &&
+      move.appear.length > 0 &&
+      move.appear[0].p != V.PAWN
+    ) {
+      // Promotion
+      notation += "=" + move.appear[0].p.toUpperCase();
+    }
+
+    return notation;
+  }
+
+};