X-Git-Url: https://git.auder.net/?a=blobdiff_plain;f=client%2Fsrc%2Fvariants%2FRoyalrace.js;h=346ca5f0b2a3749c003a6655110c5698f6879115;hb=68e19a449db7a12e0a168e99cd750d985c983ba1;hp=e3ed224bbbef4675fafb301d291840b89ad2135b;hpb=f446ee645526d617c8369add83de66888d2db6ce;p=vchess.git

diff --git a/client/src/variants/Royalrace.js b/client/src/variants/Royalrace.js
index e3ed224b..346ca5f0 100644
--- a/client/src/variants/Royalrace.js
+++ b/client/src/variants/Royalrace.js
@@ -19,10 +19,21 @@ export const VariantRules = class RoyalraceRules extends ChessRules {
     return { x: 11, y: 11 };
   }
 
-  static GenRandInitFen() {
+  static GenRandInitFen(randomness) {
+    if (randomness == 0)
+      return "11/11/11/11/11/11/11/11/11/qrbnp1PNBRQ/krbnp1PNBRK w 0";
+
     let pieces = { w: new Array(10), b: new Array(10) };
     // Shuffle pieces on first and second rank
     for (let c of ["w", "b"]) {
+      if (c == 'b' && randomness == 1) {
+        pieces['b'] = JSON.parse(JSON.stringify(pieces['w'])).reverse();
+        pieces['b'] =
+          pieces['b'].splice(5,10).reverse().concat(
+          pieces['b'].splice(0,5).reverse());
+        break;
+      }
+
       // Reserve 4 and 5 which are pawns positions
       let positions = ArrayFun.range(10).filter(i => i != 4 && i != 5);
 
@@ -82,13 +93,13 @@ export const VariantRules = class RoyalraceRules extends ChessRules {
     const blackFen = pieces["b"].join("");
     return (
       "11/11/11/11/11/11/11/11/11/" +
-      whiteFen.substr(5).split("").reverse().join("") +
+      blackFen.substr(5).split("").reverse().join("") +
       "1" +
-      blackFen.substr(5).split("").join("") +
+      whiteFen.substr(5).split("").join("") +
       "/" +
-      whiteFen.substr(0,5) +
+      blackFen.substr(0,5) +
       "1" +
-      blackFen.substr(0,5).split("").reverse().join("") +
+      whiteFen.substr(0,5).split("").reverse().join("") +
       " w 0"
     );
   }
@@ -144,16 +155,16 @@ export const VariantRules = class RoyalraceRules extends ChessRules {
     });
   }
 
-  isAttackedByPawn([x, y], colors) {
-    const pawnShift = 1;
-    if (x + pawnShift < V.size.x) {
-      for (let c of colors) {
+  isAttackedByPawn([x, y], color) {
+    // Pawns can capture forward and backward:
+    for (let pawnShift of [-1, 1]) {
+      if (0 < x + pawnShift && x + pawnShift < V.size.x) {
         for (let i of [-1, 1]) {
           if (
             y + i >= 0 &&
             y + i < V.size.y &&
             this.getPiece(x + pawnShift, y + i) == V.PAWN &&
-            this.getColor(x + pawnShift, y + i) == c
+            this.getColor(x + pawnShift, y + i) == color
           ) {
             return true;
           }
@@ -163,10 +174,10 @@ export const VariantRules = class RoyalraceRules extends ChessRules {
     return false;
   }
 
-  isAttackedByKnight(sq, colors) {
+  isAttackedByKnight(sq, color) {
     return this.isAttackedBySlideNJump(
       sq,
-      colors,
+      color,
       V.KNIGHT,
       V.steps[V.KNIGHT]
     );
@@ -178,7 +189,9 @@ export const VariantRules = class RoyalraceRules extends ChessRules {
     if (this.kingPos[color][0] == 0)
       // The opposing edge is reached!
       return color == "w" ? "1-0" : "0-1";
-    return "*";
+    if (this.atLeastOneMove()) return "*";
+    // Stalemate (will probably never happen)
+    return "1/2";
   }
 
   static get SEARCH_DEPTH() {