Experimental symmetric randomness + deterministic option

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

diff --git a/client/src/variants/Baroque.js b/client/src/variants/Baroque.js
index 79fc73c..a860fe7 100644 (file)
--- a/client/src/variants/Baroque.js
+++ b/client/src/variants/Baroque.js
@@ -11,17 +11,17 @@ export const VariantRules = class BaroqueRules extends ChessRules {
     return false;
   }
 
-  static getPpath(b) {
+  static get PIECES() {
+    return ChessRules.PIECES.concat([V.IMMOBILIZER]);
+  }
+
+  getPpath(b) {
     if (b[1] == "m")
       //'m' for Immobilizer (I is too similar to 1)
       return "Baroque/" + b;
     return b; //usual piece
   }
 
-  static get PIECES() {
-    return ChessRules.PIECES.concat([V.IMMOBILIZER]);
-  }
-
   // No castling, but checks, so keep track of kings
   setOtherVariables(fen) {
     this.kingPos = { w: [-1, -1], b: [-1, -1] };
@@ -72,7 +72,7 @@ export const VariantRules = class BaroqueRules extends ChessRules {
       ) {
         const oppPiece = this.getPiece(i, j);
         if (oppPiece == V.IMMOBILIZER) {
-          // Moving is impossible only if this immobilizer is not neutralized
+          // Moving is possible only if this immobilizer is neutralized
           for (let step2 of adjacentSteps) {
             const [i2, j2] = [i + step2[0], j + step2[1]];
             if (i2 == x && j2 == y) continue; //skip initial piece!
@@ -203,7 +203,6 @@ export const VariantRules = class BaroqueRules extends ChessRules {
     return moves;
   }
 
-  // Long-leaper
   getKnightCaptures(startSquare, byChameleon) {
     // Look in every direction for captures
     const steps = V.steps[V.ROOK].concat(V.steps[V.BISHOP]);
@@ -271,6 +270,7 @@ export const VariantRules = class BaroqueRules extends ChessRules {
     return super.getPotentialQueenMoves(sq).concat(this.getKnightCaptures(sq));
   }
 
+  // Chameleon
   getPotentialBishopMoves([x, y]) {
     let moves = super
       .getPotentialQueenMoves([x, y])
@@ -297,7 +297,6 @@ export const VariantRules = class BaroqueRules extends ChessRules {
     return moves;
   }
 
-  // Withdrawer
   addQueenCaptures(moves, byChameleon) {
     if (moves.length == 0) return;
     const [x, y] = [moves[0].start.x, moves[0].start.y];
@@ -341,6 +340,7 @@ export const VariantRules = class BaroqueRules extends ChessRules {
     });
   }
 
+  // Withdrawer
   getPotentialQueenMoves(sq) {
     let moves = super.getPotentialQueenMoves(sq);
     this.addQueenCaptures(moves);
@@ -474,8 +474,8 @@ export const VariantRules = class BaroqueRules extends ChessRules {
   }
 
   isAttackedByBishop([x, y], colors) {
-    // We cheat a little here: since this function is used exclusively for king,
-    // it's enough to check the immediate surrounding of the square.
+    // We cheat a little here: since this function is used exclusively for
+    // the king, it's enough to check the immediate surrounding of the square.
     const adjacentSteps = V.steps[V.ROOK].concat(V.steps[V.BISHOP]);
     for (let step of adjacentSteps) {
       const [i, j] = [x + step[0], y + step[1]];
@@ -512,6 +512,23 @@ export const VariantRules = class BaroqueRules extends ChessRules {
     return false;
   }
 
+  isAttackedByKing([x, y], colors) {
+    const steps = V.steps[V.ROOK].concat(V.steps[V.BISHOP]);
+    for (let step of steps) {
+      let rx = x + step[0],
+          ry = y + step[1];
+      if (
+        V.OnBoard(rx, ry) &&
+        this.getPiece(rx, ry) === V.KING &&
+        colors.includes(this.getColor(rx, ry)) &&
+        !this.isImmobilized([rx, ry])
+      ) {
+        return true;
+      }
+    }
+    return false;
+  }
+
   static get VALUES() {
     return {
       p: 1,
@@ -528,10 +545,20 @@ export const VariantRules = class BaroqueRules extends ChessRules {
     return 2;
   }
 
-  static GenRandInitFen() {
+  static GenRandInitFen(randomness) {
+    if (!randomness) randomness = 2;
+    if (randomness == 0)
+      // Deterministic:
+      return "rnbqkbnrm/pppppppp/8/8/8/8/PPPPPPPP/MNBKQBNR w 0";
+
     let pieces = { w: new Array(8), b: new Array(8) };
     // Shuffle pieces on first and last rank
     for (let c of ["w", "b"]) {
+      if (c == 'b' && randomness == 1) {
+        pieces['b'] = pieces['w'];
+        break;
+      }
+
       let positions = ArrayFun.range(8);
       // Get random squares for every piece, totally freely
 
@@ -591,7 +618,8 @@ export const VariantRules = class BaroqueRules extends ChessRules {
     } else if (move.appear[0].p == V.KING)
       notation = "K" + (move.vanish.length > 1 ? "x" : "") + finalSquare;
     else notation = move.appear[0].p.toUpperCase() + finalSquare;
-    if (move.vanish.length > 1 && move.appear[0].p != V.KING) notation += "X"; //capture mark (not describing what is captured...)
+    // Add a capture mark (not describing what is captured...):
+    if (move.vanish.length > 1 && move.appear[0].p != V.KING) notation += "X";
     return notation;
   }
 };