From: Benjamin Auder <benjamin.auder@somewhere>
Date: Sat, 24 Nov 2018 00:22:04 +0000 (+0100)
Subject: Fix Alice rules (en passant)
X-Git-Url: https://git.auder.net/variants/current/doc/css/img/pieces/cb.svg?a=commitdiff_plain;h=06ddfe34f6ef5c82d206332245ed4f33a9d92715;p=vchess.git

Fix Alice rules (en passant)
---

diff --git a/public/javascripts/base_rules.js b/public/javascripts/base_rules.js
index ec5f9372..ab197b62 100644
--- a/public/javascripts/base_rules.js
+++ b/public/javascripts/base_rules.js
@@ -781,10 +781,9 @@ class ChessRules
 	getComputerMove()
 	{
 		const color = this.turn;
-
-		// Rank moves using a min-max at depth 2
 		let moves1 = this.getAllValidMoves();
 
+		// Rank moves using a min-max at depth 2
 		for (let i=0; i<moves1.length; i++)
 		{
 			moves1[i].eval = (color=="w" ? -1 : 1) * 1000; //very low, I'm checkmated
diff --git a/public/javascripts/components/game.js b/public/javascripts/components/game.js
index a7acc10d..1f47b604 100644
--- a/public/javascripts/components/game.js
+++ b/public/javascripts/components/game.js
@@ -574,8 +574,6 @@ Vue.component('my-game', {
 			this.newGame("computer");
 		},
 		newGame: function(mode, fenInit, color, oppId, moves, continuation) {
-			//const fen = "bbrkqnrn/pppppppp/8/8/8/8/PPPPPPPP/NNRKQBBR 1111";
-			//const fen = "bbrkqnr1/pppppp1p/6o1/6s1/3SS3/8/PPP2PPP/NNRKQBBR 1111"; //first 2 moves == pb
 			const fen = fenInit || VariantRules.GenRandInitFen();
 			console.log(fen); //DEBUG
 			this.score = "*";
diff --git a/public/javascripts/variants/Alice.js b/public/javascripts/variants/Alice.js
index a15c30c3..dd023bba 100644
--- a/public/javascripts/variants/Alice.js
+++ b/public/javascripts/variants/Alice.js
@@ -95,8 +95,11 @@ class AliceRules extends ChessRules
 		let moves = super.getPotentialMovesFrom([x,y]);
 		this.board = saveBoard;
 
+		const pieces = Object.keys(VariantRules.ALICE_CODES);
+		const codes = Object.keys(VariantRules.ALICE_PIECES);
+
 		// Finally filter impossible moves
-		const mirrorSide = (Object.keys(VariantRules.ALICE_CODES).includes(this.getPiece(x,y)) ? 1 : 2);
+		const mirrorSide = (pieces.includes(this.getPiece(x,y)) ? 1 : 2);
 		return moves.filter(m => {
 			if (m.appear.length == 2) //castle
 			{
@@ -113,8 +116,8 @@ class AliceRules extends ChessRules
 			{
 				// Attempt to capture
 				const piece = this.getPiece(m.end.x,m.end.y);
-				if ((mirrorSide==1 && Object.keys(VariantRules.ALICE_PIECES).includes(piece))
-					|| (mirrorSide==2 && Object.keys(VariantRules.ALICE_CODES).includes(piece)))
+				if ((mirrorSide==1 && codes.includes(piece))
+					|| (mirrorSide==2 && pieces.includes(piece)))
 				{
 					return false;
 				}
@@ -134,7 +137,17 @@ class AliceRules extends ChessRules
 			}
 			// Fix en-passant captures
 			if (m.vanish.length == 2 && this.board[m.end.x][m.end.y] == VariantRules.EMPTY)
+			{
 				m.vanish[1].c = this.getOppCol(this.getColor(x,y));
+				// In the special case of en-passant, if
+				//  - board1 takes board2 : vanish[1] --> Alice
+				//  - board2 takes board1 : vanish[1] --> normal
+				let van = m.vanish[1];
+				if (mirrorSide==1 && codes.includes(this.getPiece(van.x,van.y)))
+					van.p = VariantRules.ALICE_CODES[van.p];
+				else if (mirrorSide==2 && pieces.includes(this.getPiece(van.x,van.y)))
+					van.p = VariantRules.ALICE_PIECES[van.p];
+			}
 			return true;
 		});
 	}