Almost added TitanChess + EvolutionChess

[vchess.git] / client / src / variants / Absorption.js

diff --git a/client/src/variants/Absorption.js b/client/src/variants/Absorption.js
index 7a9ff3c..c6e1de7 100644 (file)
--- a/client/src/variants/Absorption.js
+++ b/client/src/variants/Absorption.js
@@ -1,6 +1,7 @@
 import { ChessRules } from "@/base_rules";
 
 export class AbsorptionRules extends ChessRules {
+
   getPpath(b) {
     if ([V.BN, V.RN, V.QN].includes(b[1])) return "Absorption/" + b;
     return b;
@@ -49,8 +50,8 @@ export class AbsorptionRules extends ChessRules {
       // p1 or p2 already have knight + other piece
       return (p1 == V.KNIGHT ? p2 : p1);
     }
+    if ([p1, p2].includes(V.QN)) return V.QN;
     for (let p of [p1, p2]) {
-      if (p == V.QN) return V.QN;
       if ([V.BN, V.RN].includes(p))
         return V.MergeComposed[[p1, p2].sort().join("")];
     }
@@ -80,6 +81,15 @@ export class AbsorptionRules extends ChessRules {
       default:
         moves = super.getPotentialMovesFrom(sq);
     }
+    // Filter out capturing promotions (except one),
+    // because they are all the same.
+    moves = moves.filter(m => {
+      return (
+        m.vanish.length == 1 ||
+        m.vanish[0].p != V.PAWN ||
+        [V.PAWN, V.QUEEN].includes(m.appear[0].p)
+      );
+    });
     moves.forEach(m => {
       if (m.vanish.length == 2) {
         // Augment pieces abilities in case of captures
@@ -138,4 +148,5 @@ export class AbsorptionRules extends ChessRules {
       notation += "=" + move.appear[0].p.toUpperCase();
     return notation;
   }
+
 };