X-Git-Url: https://git.auder.net/?a=blobdiff_plain;f=client%2Fsrc%2Fvariants%2FBenedict.js;h=e87827f48e83a86b0bc4032140ef2ef2fd5ab354;hb=e9b736ee3e72e2ddb9bf4da0c0f1e22a70f7448f;hp=e3e55eb64dea79ae7a6d2d81a0c5851c77a5607f;hpb=9bd6786b863c31c3ccd0057b87cf454c90886056;p=vchess.git

diff --git a/client/src/variants/Benedict.js b/client/src/variants/Benedict.js
index e3e55eb6..e87827f4 100644
--- a/client/src/variants/Benedict.js
+++ b/client/src/variants/Benedict.js
@@ -132,6 +132,87 @@ export const VariantRules = class BenedictRules extends ChessRules {
     return noCaptures.concat(this.getCastleMoves(sq));
   }
 
+  // No "under check" verifications:
+  getCastleMoves([x, y]) {
+    const c = this.getColor(x, y);
+    if (x != (c == "w" ? V.size.x - 1 : 0) || y != this.INIT_COL_KING[c])
+      return []; //x isn't first rank, or king has moved (shortcut)
+
+    // Castling ?
+    const oppCol = V.GetOppCol(c);
+    let moves = [];
+    let i = 0;
+    // King, then rook:
+    const finalSquares = [
+      [2, 3],
+      [V.size.y - 2, V.size.y - 3]
+    ];
+    castlingCheck: for (
+      let castleSide = 0;
+      castleSide < 2;
+      castleSide++ //large, then small
+    ) {
+      if (!this.castleFlags[c][castleSide]) continue;
+      // If this code is reached, rooks and king are on initial position
+
+      const rookPos = this.INIT_COL_ROOK[c][castleSide];
+      if (this.getColor(x, rookPos) != c)
+        // Rook is here but changed color
+        continue;
+
+      // Nothing on the path of the king ?
+      const finDist = finalSquares[castleSide][0] - y;
+      let step = finDist / Math.max(1, Math.abs(finDist));
+      for (let i = y; i != finalSquares[castleSide][0]; i += step) {
+        if (
+          this.board[x][i] != V.EMPTY &&
+            // NOTE: next check is enough, because of chessboard constraints
+            (this.getColor(x, i) != c ||
+              ![V.KING, V.ROOK].includes(this.getPiece(x, i)))
+        ) {
+          continue castlingCheck;
+        }
+      }
+
+      // Nothing on the path to the rook?
+      step = castleSide == 0 ? -1 : 1;
+      for (i = y + step; i != this.INIT_COL_ROOK[c][castleSide]; i += step) {
+        if (this.board[x][i] != V.EMPTY) continue castlingCheck;
+      }
+
+      // Nothing on final squares, except maybe king and castling rook?
+      for (i = 0; i < 2; i++) {
+        if (
+          this.board[x][finalSquares[castleSide][i]] != V.EMPTY &&
+          this.getPiece(x, finalSquares[castleSide][i]) != V.KING &&
+          finalSquares[castleSide][i] != rookPos
+        ) {
+          continue castlingCheck;
+        }
+      }
+
+      // If this code is reached, castle is valid
+      moves.push(
+        new Move({
+          appear: [
+            new PiPo({ x: x, y: finalSquares[castleSide][0], p: V.KING, c: c }),
+            new PiPo({ x: x, y: finalSquares[castleSide][1], p: V.ROOK, c: c })
+          ],
+          vanish: [
+            new PiPo({ x: x, y: y, p: V.KING, c: c }),
+            new PiPo({ x: x, y: rookPos, p: V.ROOK, c: c })
+          ],
+          end:
+            Math.abs(y - rookPos) <= 2
+              ? { x: x, y: rookPos }
+              : { x: x, y: y + 2 * (castleSide == 0 ? -1 : 1) }
+        })
+      );
+    }
+
+    return moves;
+  }
+
   // TODO: appear/vanish description of a move is too verbose for Benedict.
   // => Would need a new "flipped" array, to be passed in Game.vue...
   getPotentialMovesFrom([x, y]) {
@@ -141,26 +222,33 @@ export const VariantRules = class BenedictRules extends ChessRules {
     let moves = super.getPotentialMovesFrom([x, y]);
     // Add flips:
     moves.forEach(m => {
+      let newAppear = [];
+      let newVanish = [];
       V.PlayOnBoard(this.board, m);
-      const flipped = this.findCaptures([m.end.x, m.end.y]);
-      V.UndoOnBoard(this.board, m);
-      flipped.forEach(sq => {
-        const piece = this.getPiece(sq[0],sq[1]);
-        const pipoA = new PiPo({
-          x:sq[0],
-          y:sq[1],
-          c:color,
-          p:piece
+      // If castling, m.appear has 2 elements:
+      m.appear.forEach(a => {
+        const flipped = this.findCaptures([a.x, a.y]);
+        flipped.forEach(sq => {
+          const piece = this.getPiece(sq[0],sq[1]);
+          const pipoA = new PiPo({
+            x:sq[0],
+            y:sq[1],
+            c:color,
+            p:piece
+          });
+          const pipoV = new PiPo({
+            x:sq[0],
+            y:sq[1],
+            c:oppCol,
+            p:piece
+          });
+          newAppear.push(pipoA);
+          newVanish.push(pipoV);
         });
-        const pipoV = new PiPo({
-          x:sq[0],
-          y:sq[1],
-          c:oppCol,
-          p:piece
-        });
-        m.appear.push(pipoA);
-        m.vanish.push(pipoV);
       });
+      Array.prototype.push.apply(m.appear, newAppear);
+      Array.prototype.push.apply(m.vanish, newVanish);
+      V.UndoOnBoard(this.board, m);
     });
     return moves;
   }
@@ -175,12 +263,31 @@ export const VariantRules = class BenedictRules extends ChessRules {
     return [];
   }
 
+  // Stop at the first move found
+  atLeastOneMove() {
+    const color = this.turn;
+    const oppCol = V.GetOppCol(color);
+    for (let i = 0; i < V.size.x; i++) {
+      for (let j = 0; j < V.size.y; j++) {
+        if (this.board[i][j] != V.EMPTY && this.getColor(i, j) != oppCol) {
+          const moves = this.getPotentialMovesFrom([i, j]);
+          if (moves.length > 0)
+            return true;
+        }
+      }
+    }
+    return false;
+  }
+
   getCurrentScore() {
     const color = this.turn;
     // Did a king change color?
     const kp = this.kingPos[color];
     if (this.getColor(kp[0], kp[1]) != color)
       return color == "w" ? "0-1" : "1-0";
-    return "*";
+    if (this.atLeastOneMove())
+      return "*";
+    // Stalemate:
+    return "1/2";
   }
 };