Experimental symmetric randomness + deterministic option

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

diff --git a/client/src/variants/Knightmate.js b/client/src/variants/Knightmate.js
index c0e84c6..0ac7ebe 100644 (file)
--- a/client/src/variants/Knightmate.js
+++ b/client/src/variants/Knightmate.js
@@ -15,56 +15,9 @@ export const VariantRules = class KnightmateRules extends ChessRules {
     return ([V.KING, V.COMMONER].includes(b[1]) ? "Knightmate/" : "") + b;
   }
 
-  static GenRandInitFen() {
-    let pieces = { w: new Array(8), b: new Array(8) };
-    // Shuffle pieces on first and last rank
-    for (let c of ["w", "b"]) {
-      let positions = ArrayFun.range(8);
-
-      // Get random squares for bishops
-      let randIndex = 2 * randInt(4);
-      const bishop1Pos = positions[randIndex];
-      let randIndex_tmp = 2 * randInt(4) + 1;
-      const bishop2Pos = positions[randIndex_tmp];
-      positions.splice(Math.max(randIndex, randIndex_tmp), 1);
-      positions.splice(Math.min(randIndex, randIndex_tmp), 1);
-
-      // Get random squares for commoners
-      randIndex = randInt(6);
-      const commoner1Pos = positions[randIndex];
-      positions.splice(randIndex, 1);
-      randIndex = randInt(5);
-      const commoner2Pos = positions[randIndex];
-      positions.splice(randIndex, 1);
-
-      // Get random square for queen
-      randIndex = randInt(4);
-      const queenPos = positions[randIndex];
-      positions.splice(randIndex, 1);
-
-      // Rooks and king positions are now fixed,
-      // because of the ordering rook-king-rook
-      const rook1Pos = positions[0];
-      const kingPos = positions[1];
-      const rook2Pos = positions[2];
-
-      // Finally put the shuffled pieces in the board array
-      pieces[c][rook1Pos] = "r";
-      pieces[c][commoner1Pos] = "c";
-      pieces[c][bishop1Pos] = "b";
-      pieces[c][queenPos] = "q";
-      pieces[c][kingPos] = "k";
-      pieces[c][bishop2Pos] = "b";
-      pieces[c][commoner2Pos] = "c";
-      pieces[c][rook2Pos] = "r";
-    }
-    // Add turn + flags + enpassant
-    return (
-      pieces["b"].join("") +
-      "/pppppppp/8/8/8/8/PPPPPPPP/" +
-      pieces["w"].join("").toUpperCase() +
-      " w 0 1111 -"
-    );
+  static GenRandInitFen(randomness) {
+    return ChessRules.GenRandInitFen(randomness)
+      .replace(/n/g, 'c').replace(/N/g, 'C');
   }
 
   getPotentialMovesFrom([x, y]) {