X-Git-Url: https://git.auder.net/?a=blobdiff_plain;f=client%2Fsrc%2Fvariants%2FAllmate.js;h=86409c25f1d26112638b63386c28da4a29319d99;hb=eb2d61de8d569470fa329a484efe9bab420b2b82;hp=5636f5682194bf9128dbab0a64b71bf633dee642;hpb=23ecf00824691b5622b468e0409fc543c87d75dc;p=vchess.git

diff --git a/client/src/variants/Allmate.js b/client/src/variants/Allmate.js
index 5636f568..86409c25 100644
--- a/client/src/variants/Allmate.js
+++ b/client/src/variants/Allmate.js
@@ -1,25 +1,26 @@
 import { ChessRules, PiPo, Move } from "@/base_rules";
 
-export const VariantRules = class AllmateRules extends ChessRules {
+export class AllmateRules extends ChessRules {
+
   static get HasEnpassant() {
     return false;
   }
 
-  canTake(sq1, sq2) {
-    return false; //Captures handled differently
-  }
-
   getCheckSquares() {
     // No notion of check
     return [];
   }
 
-  static GenRandInitFen() {
-    return ChessRules.GenRandInitFen().replace(/ -$/, "");
+  static GenRandInitFen(randomness) {
+    return ChessRules.GenRandInitFen(randomness).slice(0, -2);
   }
 
   getPotentialMovesFrom([x, y]) {
     let moves = super.getPotentialMovesFrom([x, y]);
+    // Remove standard captures (without removing castling):
+    moves = moves.filter(m => {
+      return m.vanish.length == 1 || m.appear.length == 2;
+    });
 
     // Augment moves with "mate-captures":
     // TODO: this is coded in a highly inefficient way...
@@ -27,152 +28,105 @@ export const VariantRules = class AllmateRules extends ChessRules {
     const oppCol = V.GetOppCol(this.turn);
     moves.forEach(m => {
       this.play(m);
+      let allAttacks = [];
+
+      // While something has been captured:
+      // remove it, and keep looking for captures
+      outerLoop: while (true) {
 
-      // 1) What is attacked?
-      let attacked = {};
-      for (let i=0; i<V.size.x; i++) {
-        for (let j=0; j<V.size.y; j++) {
-          if (this.getColor(i,j) == oppCol && this.isAttacked([i,j], [color]))
-            attacked[i+"_"+j] = [i,j];
+        // 1) What is attacked?
+        let attacked = {};
+        for (let i=0; i<V.size.x; i++) {
+          for (let j=0; j<V.size.y; j++) {
+            if (this.getColor(i,j) == oppCol && this.isAttacked([i,j], color))
+              attacked[i+"_"+j] = [i,j];
+          }
         }
-      }
+        if (Object.keys(attacked).length == 0) break outerLoop;
 
-      // 2) Among attacked pieces, which cannot escape capture?
-      // Avoid "oppMoves = this.getAllValidMoves();" => infinite recursion
-      outerLoop: for (let i=0; i<V.size.x; i++) {
-        for (let j=0; j<V.size.y; j++) {
-          if (this.getColor(i,j) == oppCol) {
-            let oppMoves = [];
-            switch (this.getPiece(i, j)) {
-              case V.PAWN:
-                oppMoves = this.getPotentialPawnMoves([i, j]);
-                break;
-              case V.ROOK:
-                oppMoves = this.getPotentialRookMoves([i, j]);
-                break;
-              case V.KNIGHT:
-                oppMoves = this.getPotentialKnightMoves([i, j]);
-                break;
-              case V.BISHOP:
-                oppMoves = this.getPotentialBishopMoves([i, j]);
-                break;
-              case V.QUEEN:
-                oppMoves = this.getPotentialQueenMoves([i, j]);
-                break;
-              case V.KING:
-                oppMoves = this.getPotentialKingMoves([i, j]);
-                break;
-            }
-            for (let om of oppMoves) {
-              V.PlayOnBoard(this.board, om);
-              Object.values(attacked).forEach(sq => {
-                const origSq = [sq[0], sq[1]];
-                if (om.start.x == sq[0] && om.start.y == sq[1])
-                  // Piece moved:
-                  sq = [om.appear[0].x, om.appear[0].y];
-                if (!this.isAttacked(sq, [color]))
-                  delete attacked[origSq[0]+"_"+origSq[1]];
-              });
-              V.UndoOnBoard(this.board, om);
-              if (Object.keys(attacked).length == 0)
-                // No need to explore more moves
-                break outerLoop;
+        // 2) Among attacked pieces, which cannot escape capture?
+        // Avoid "oppMoves = this.getAllValidMoves();" => infinite recursion
+        for (let i=0; i<V.size.x; i++) {
+          for (let j=0; j<V.size.y; j++) {
+            if (this.getColor(i,j) == oppCol) {
+              let oppMoves = [];
+              switch (this.getPiece(i, j)) {
+                case V.PAWN:
+                  oppMoves = this.getPotentialPawnMoves([i, j]);
+                  break;
+                case V.ROOK:
+                  oppMoves = this.getPotentialRookMoves([i, j]);
+                  break;
+                case V.KNIGHT:
+                  oppMoves = this.getPotentialKnightMoves([i, j]);
+                  break;
+                case V.BISHOP:
+                  oppMoves = this.getPotentialBishopMoves([i, j]);
+                  break;
+                case V.QUEEN:
+                  oppMoves = this.getPotentialQueenMoves([i, j]);
+                  break;
+                case V.KING:
+                  // Do not allow castling to escape from check
+                  oppMoves = super.getSlideNJumpMoves(
+                    [i, j],
+                    V.steps[V.ROOK].concat(V.steps[V.BISHOP]),
+                    "oneStep"
+                  );
+                  break;
+              }
+              for (let om of oppMoves) {
+                V.PlayOnBoard(this.board, om);
+                Object.values(attacked).forEach(sq => {
+                  const origSq = [sq[0], sq[1]];
+                  if (om.start.x == sq[0] && om.start.y == sq[1])
+                    // Piece moved:
+                    sq = [om.appear[0].x, om.appear[0].y];
+                  if (!this.isAttacked(sq, color))
+                    delete attacked[origSq[0]+"_"+origSq[1]];
+                });
+                V.UndoOnBoard(this.board, om);
+                if (Object.keys(attacked).length == 0)
+                  // No need to explore more moves
+                  break outerLoop;
+              }
             }
           }
         }
+
+        // 3) Add mate-captures and remove pieces from board:
+        Object.keys(attacked).forEach(k => {
+          allAttacks.push({
+            sq: attacked[k],
+            p: this.getPiece(attacked[k][0], attacked[k][1])
+          });
+          this.board[attacked[k][0]][attacked[k][1]] = V.EMPTY;
+        });
       }
 
-      // 3) Add mate-captures:
-      Object.values(attacked).forEach(sq => {
-        m.vanish.push(new PiPo({
-          x: sq[0],
-          y: sq[1],
-          c: oppCol,
-          p: this.getPiece(sq[0], sq[1])
-        }));
+      // Put removed pieces back on board:
+      allAttacks.forEach(v => {
+        this.board[v.sq[0]][v.sq[1]] = oppCol + v.p;
       });
-
       this.undo(m);
+      allAttacks.forEach(v => {
+        m.vanish.push(
+          new PiPo({
+            x: v.sq[0],
+            y: v.sq[1],
+            c: oppCol,
+            p: v.p
+          })
+        );
+      });
     });
 
     return moves;
   }
 
   // No "under check" conditions in castling
-  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
-
-      // Nothing on the path of the king ? (and no checks)
-      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;
-      }
-      const rookPos = this.INIT_COL_ROOK[c][castleSide];
-
-      // 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;
+  getCastleMoves(sq) {
+    return super.getCastleMoves(sq, null, "castleInCheck");
   }
 
   // TODO: allow pieces to "commit suicide"? (Currently yes except king)
@@ -222,7 +176,7 @@ export const VariantRules = class AllmateRules extends ChessRules {
                 if (em.start.x == attacked[0] && em.start.y == attacked[1])
                   // King moved:
                   sq = [em.appear[0].x, em.appear[0].y];
-                if (!this.isAttacked(sq, [oppCol]))
+                if (!this.isAttacked(sq, oppCol))
                   res = true;
                 V.UndoOnBoard(this.board, em);
                 if (res)
@@ -238,34 +192,32 @@ export const VariantRules = class AllmateRules extends ChessRules {
     });
   }
 
-  updateVariables(move) {
-    super.updateVariables(move);
-    const color = V.GetOppCol(this.turn);
+  postPlay(move) {
+    super.postPlay(move);
     if (move.vanish.length >= 2 && move.appear.length == 1) {
-      move.vanish.forEach(v => {
-        if (v.c == color)
-          return;
+      for (let i = 1; i<move.vanish.length; i++) {
+        const v = move.vanish[i];
         // Did opponent king disappeared?
         if (v.p == V.KING)
           this.kingPos[this.turn] = [-1, -1];
         // Or maybe a rook?
         else if (v.p == V.ROOK) {
-          if (v.y < this.INIT_COL_KING[v.c])
-            this.castleFlags[v.c][0] = false;
+          if (v.y < this.kingPos[v.c][1])
+            this.castleFlags[v.c][0] = 8;
           else
-            // v.y > this.INIT_COL_KING[v.c]
-            this.castleFlags[v.c][1] = false;
+            // v.y > this.kingPos[v.c][1]
+            this.castleFlags[v.c][1] = 8;
         }
-      });
+      }
     }
   }
 
-  unupdateVariables(move) {
-    super.unupdateVariables(move);
-    const color = this.turn;
+  preUndo(move) {
+    super.preUndo(move);
+    const oppCol = this.turn;
     if (move.vanish.length >= 2 && move.appear.length == 1) {
       // Did opponent king disappeared?
-      const psq = move.vanish.find(v => v.p == V.KING && v.c != color)
+      const psq = move.vanish.find(v => v.p == V.KING && v.c == oppCol)
       if (psq)
         this.kingPos[psq.c] = [psq.x, psq.y];
     }
@@ -277,25 +229,25 @@ export const VariantRules = class AllmateRules extends ChessRules {
     if (kp[0] < 0)
       // King disappeared
       return color == "w" ? "0-1" : "1-0";
-    if (this.atLeastOneMove())
-      return "*";
+    if (this.atLeastOneMove()) return "*";
     // Kings still there, no moves:
     return "1/2";
   }
 
   static get SEARCH_DEPTH() {
-    return 2;
+    return 1;
   }
 
   getNotation(move) {
     let notation = super.getNotation(move);
     // Add a capture mark (not describing what is captured...):
     if (move.vanish.length > 1 && move.appear.length == 1) {
-      if (notation.match(/^[a-h]x/))
+      if (!!(notation.match(/^[a-h]x/)))
         // Pawn capture: remove initial "b" in bxc4 for example
         notation = notation.substr(1);
       notation = notation.replace("x","") + "X";
     }
     return notation;
   }
+
 };