From: Benjamin Auder <benjamin.auder@somewhere>
Date: Sun, 24 Jan 2021 14:33:05 +0000 (+0100)
Subject: Fix shadow piece bug: reserve count is now updated as expected
X-Git-Url: https://git.auder.net/css/vendor/doc/%3C?a=commitdiff_plain;h=665a8844aa49422692f184703944978510106aa7;p=vchess.git

Fix shadow piece bug: reserve count is now updated as expected
---

diff --git a/client/src/variants/Emergo.js b/client/src/variants/Emergo.js
index aea814d5..a1a98488 100644
--- a/client/src/variants/Emergo.js
+++ b/client/src/variants/Emergo.js
@@ -479,7 +479,11 @@ export class EmergoRules extends ChessRules {
         move.notTheEnd = true;
     }
     else if (move.vanish == 0) {
-      if (--this.reserve[color][V.PAWN] == 0) this.reserve[color] = null;
+      const firstCode = (color == 'w' ? 65 : 97);
+      // Generally, reserveCount == 1 (except for shadow piece)
+      const reserveCount = move.appear[0].c.charCodeAt() - firstCode + 1;
+      this.reserve[color][V.PAWN] -= reserveCount;
+      if (this.reserve[color][V.PAWN] == 0) this.reserve[color] = null;
     }
     if (!move.notTheEnd) {
       this.turn = V.GetOppCol(color);
@@ -497,8 +501,10 @@ export class EmergoRules extends ChessRules {
     }
     if (move.vanish.length == 0) {
       const color = (move.appear[0].c == 'A' ? 'w' : 'b');
-      if (!this.reserve[color]) this.reserve[color] = { [V.PAWN]: 1 };
-      else this.reserve[color][V.PAWN]++;
+      const firstCode = (color == 'w' ? 65 : 97);
+      const reserveCount = move.appear[0].c.charCodeAt() - firstCode + 1;
+      if (!this.reserve[color]) this.reserve[color] = { [V.PAWN]: 0 };
+      this.reserve[color][V.PAWN] += reserveCount;
     }
     else if (move.vanish.length == 2) {
       const L0 = this.captures.length;