Experimental symmetric randomness + deterministic option

[vchess.git] / client / src / base_rules.js

diff --git a/client/src/base_rules.js b/client/src/base_rules.js
index 149bb4d..93772b9 100644 (file)
--- a/client/src/base_rules.js
+++ b/client/src/base_rules.js
@@ -238,11 +238,21 @@ export const ChessRules = class ChessRules {
   /////////////
   // FEN UTILS
 
-  // Setup the initial random (assymetric) position
-  static GenRandInitFen() {
+  // Setup the initial random (asymmetric) position
+  static GenRandInitFen(randomness) {
+    if (!randomness) randomness = 2;
+    if (randomness == 0)
+      // Deterministic:
+      return "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w 0 1111 -";
+
     let pieces = { w: new Array(8), b: new Array(8) };
-    // Shuffle pieces on first and last rank
+    // Shuffle pieces on first (and last rank if randomness == 2)
     for (let c of ["w", "b"]) {
+      if (c == 'b' && randomness == 1) {
+        pieces['b'] = pieces['w'];
+        break;
+      }
+
       let positions = ArrayFun.range(8);
 
       // Get random squares for bishops
@@ -395,14 +405,12 @@ export const ChessRules = class ChessRules {
   //////////////////
   // INITIALIZATION
 
-  constructor(fen) {
-    // In printDiagram() fen isn't supply because only getPpath() is used
-    if (fen)
-      this.re_init(fen);
-  }
-
   // Fen string fully describes the game state
-  re_init(fen) {
+  constructor(fen) {
+    if (!fen)
+      // In printDiagram() fen isn't supply because only getPpath() is used
+      // TODO: find a better solution!
+      return;
     const fenParsed = V.ParseFen(fen);
     this.board = V.GetBoard(fenParsed.position);
     this.turn = fenParsed.turn[0]; //[0] to work with MarseilleRules