Add Alice Chess, fix a few things in base_rules.js

[xogo.git] / variants / Benedict / class.js

diff --git a/variants/Benedict/class.js b/variants/Benedict/class.js
index 88609d7..e055e86 100644 (file)
--- a/variants/Benedict/class.js
+++ b/variants/Benedict/class.js
@@ -6,7 +6,14 @@ export default class BenedictRules extends ChessRules {
   static get Options() {
     return {
       select: C.Options.select,
-      check: [],
+      input: [
+        {
+          label: "Cleopatra",
+          variable: "cleopatra",
+          type: "checkbox",
+          defaut: false
+        }
+      ],
       styles: [
         "balance",
         "cylinder",
@@ -22,6 +29,20 @@ export default class BenedictRules extends ChessRules {
     return false;
   }
 
+  canTake() {
+    return false;
+  }
+
+  pieces(color, x, y) {
+    if (!this.options["cleopatra"])
+      return super.pieces(color, x, y);
+    const allSpecs = super.pieces(color, x, y);
+    return Object.assign({},
+      allSpecs,
+      {'q': Object.assign({}, allSpecs['q'], {"class": "cleopatra"})}
+    );
+  }
+
   // Find potential captures from a square
   // follow steps from x,y until something is met.
   findAttacks([x, y]) {
@@ -32,13 +53,13 @@ export default class BenedictRules extends ChessRules {
     const attacks = specs.attack || specs.moves;
     for (let a of attacks) {
       outerLoop: for (let step of a.steps) {
-        let [i, j] = [x + step[0], this.computeY(y + step[1])];
+        let [i, j] = [x + step[0], this.getY(y + step[1])];
         let nbSteps = 1;
         while (this.onBoard(i, j) && this.board[i][j] == "") {
           if (a.range <= nbSteps++)
             continue outerLoop;
           i += step[0];
-          j = this.computeY(j + step[1]);
+          j = this.getY(j + step[1]);
         }
         if (
           this.onBoard(i, j) && this.getColor(i, j) == oppCol &&
@@ -52,29 +73,23 @@ export default class BenedictRules extends ChessRules {
   }
 
   postProcessPotentialMoves(moves) {
-    if (moves.length == 0)
-      return moves;
-    const color = this.getColor(moves[0].start.x, moves[0].start.y);
-    const oppCol = C.GetOppCol(color);
-    // Remove captures (NOTE: altering canTake has side effects,
-    // Benedict is still based on captures even if they are forbidden):
-    moves = super.postProcessPotentialMoves(moves)
-                 .filter(m => this.board[m.end.x][m.end.y] == "");
     moves.forEach(m => {
-      super.playOnBoard(m);
-      let attacks = this.findAttacks([m.end.x, m.end.y])
-      if (this.options["zen"]) {
-        let endSquares = {};
-        super.findCapturesOn([m.end.x, m.end.y], true).forEach(c => {
-          endSquares[C.CoordsToSquare(c.end)] = true;
+      m.flips = [];
+      if (!this.options["cleopatra"] || m.vanish[0].p == 'q') {
+        super.playOnBoard(m);
+        let attacks = this.findAttacks([m.end.x, m.end.y])
+        if (this.options["zen"]) {
+          let endSquares = {};
+          super.findCapturesOn([m.end.x, m.end.y], {zen: true}).forEach(c => {
+            endSquares[C.CoordsToSquare(c.end)] = true;
+          });
+          Array.prototype.push.apply(attacks, Object.keys(endSquares));
+        }
+        super.undoOnBoard(m);
+        attacks.map(C.SquareToCoords).forEach(a => {
+          m.flips.push({x: a.x, y: a.y});
         });
-        Array.prototype.push.apply(attacks, Object.keys(endSquares));
       }
-      super.undoOnBoard(m);
-      m.flips = [];
-      attacks.map(C.SquareToCoords).forEach(a => {
-        m.flips.push({x: a.x, y: a.y});
-      });
     });
     return moves;
   }
@@ -115,7 +130,7 @@ export default class BenedictRules extends ChessRules {
   }
 
   // A king under (regular) check flips color, and the game is over.
-  underCheck(square, color) {
+  underCheck() {
     return false;
   }