X-Git-Url: https://git.auder.net/?a=blobdiff_plain;f=client%2Fsrc%2Fbase_rules.js;h=69549525408d51fa349cac05fb2254db758c216b;hb=4a2093139089632727de4f510127ef186cab528e;hp=2c2b705c4c71b90fc052d1018d3a68c80125ca52;hpb=9a1e3abe33fff07218b17c7c799eb622a730b7c7;p=vchess.git

diff --git a/client/src/base_rules.js b/client/src/base_rules.js
index 2c2b705c..69549525 100644
--- a/client/src/base_rules.js
+++ b/client/src/base_rules.js
@@ -112,6 +112,11 @@ export const ChessRules = class ChessRules {
     return false;
   }
 
+  // Some games are drawn unusually (bottom right corner is black)
+  static get DarkBottomRight() {
+    return false;
+  }
+
   // Some variants require lines drawing
   static get Lines() {
     if (V.Monochrome) {
@@ -192,7 +197,7 @@ export const ChessRules = class ChessRules {
         if (V.PIECES.includes(row[i].toLowerCase())) sumElts++;
         else {
           const num = parseInt(row[i], 10);
-          if (isNaN(num)) return false;
+          if (isNaN(num) || num <= 0) return false;
           sumElts += num;
         }
       }
@@ -270,7 +275,7 @@ export const ChessRules = class ChessRules {
 
   // En-passant square, if any
   getEpSquare(moveOrSquare) {
-    if (!moveOrSquare) return undefined;
+    if (!moveOrSquare) return undefined; //TODO: necessary line?!
     if (typeof moveOrSquare === "string") {
       const square = moveOrSquare;
       if (square == "-") return undefined;
@@ -648,20 +653,14 @@ export const ChessRules = class ChessRules {
   // MOVES GENERATION
 
   // All possible moves from selected square
-  getPotentialMovesFrom([x, y]) {
-    switch (this.getPiece(x, y)) {
-      case V.PAWN:
-        return this.getPotentialPawnMoves([x, y]);
-      case V.ROOK:
-        return this.getPotentialRookMoves([x, y]);
-      case V.KNIGHT:
-        return this.getPotentialKnightMoves([x, y]);
-      case V.BISHOP:
-        return this.getPotentialBishopMoves([x, y]);
-      case V.QUEEN:
-        return this.getPotentialQueenMoves([x, y]);
-      case V.KING:
-        return this.getPotentialKingMoves([x, y]);
+  getPotentialMovesFrom(sq) {
+    switch (this.getPiece(sq[0], sq[1])) {
+      case V.PAWN: return this.getPotentialPawnMoves(sq);
+      case V.ROOK: return this.getPotentialRookMoves(sq);
+      case V.KNIGHT: return this.getPotentialKnightMoves(sq);
+      case V.BISHOP: return this.getPotentialBishopMoves(sq);
+      case V.QUEEN: return this.getPotentialQueenMoves(sq);
+      case V.KING: return this.getPotentialKingMoves(sq);
     }
     return []; //never reached
   }
@@ -676,8 +675,8 @@ export const ChessRules = class ChessRules {
         new PiPo({
           x: ex,
           y: ey,
-          c: tr ? tr.c : initColor,
-          p: tr ? tr.p : initPiece
+          c: !!tr ? tr.c : initColor,
+          p: !!tr ? tr.p : initPiece
         })
       ],
       vanish: [
@@ -1072,8 +1071,10 @@ export const ChessRules = class ChessRules {
       }
       if (
         V.OnBoard(rx, ry) &&
+        this.board[rx][ry] != V.EMPTY &&
         this.getPiece(rx, ry) == piece &&
-        this.getColor(rx, ry) == color
+        this.getColor(rx, ry) == color &&
+        this.canTake([rx, ry], [x, y])
       ) {
         return true;
       }