Add Rugby variant

diff --git a/TODO b/TODO
index 094de49..1fd349b 100644 (file)
--- a/TODO
+++ b/TODO
@@ -1,16 +1,9 @@
-# Improvements
-
-Find a way to generalize getCastleMoves and getPotentialPawnMoves,
-to limit code duplication.
-
 # New variants
 Landing pieces from empty board:
 https://www.chessvariants.com/diffsetup.dir/unachess.html
 
 Rugby http://www.echecspourtous.com/?page_id=7945
 
-Cannibal Chess with forced captures.
-
 S-chess https://en.wikipedia.org/wiki/Seirawan_chess
 
 Generator variant, called "Matrix" ?

diff --git a/client/src/translations/en.js b/client/src/translations/en.js
index c0c95a2..328f089 100644 (file)
--- a/client/src/translations/en.js
+++ b/client/src/translations/en.js
@@ -195,5 +195,6 @@ export const translations = {
   "Shoot pieces": "Shoot pieces",
   "Squares disappear": "Squares disappear",
   "Standard rules": "Standard rules",
+  "Transform an essay": "Transform an essay",
   "Unidentified pieces": "Unidentified pieces"
 };

diff --git a/client/src/translations/es.js b/client/src/translations/es.js
index c9f30e9..78c0b05 100644 (file)
--- a/client/src/translations/es.js
+++ b/client/src/translations/es.js
@@ -195,5 +195,6 @@ export const translations = {
   "Shoot pieces": "Tirar de las piezas",
   "Squares disappear": "Las casillas desaparecen",
   "Standard rules": "Reglas estandar",
+  "Transform an essay": "Transformar un ensayo",
   "Unidentified pieces": "Piezas no identificadas"
 };

diff --git a/client/src/translations/fr.js b/client/src/translations/fr.js
index b02969f..8c78295 100644 (file)
--- a/client/src/translations/fr.js
+++ b/client/src/translations/fr.js
@@ -195,5 +195,6 @@ export const translations = {
   "Shoot pieces": "Tirez sur les pièces",
   "Squares disappear": "Les cases disparaissent",
   "Standard rules": "Règles usuelles",
+  "Transform an essay": "Transformer un essai",
   "Unidentified pieces": "Pièces non identifiées"
 };

diff --git a/client/src/translations/rules/Rugby/en.pug b/client/src/translations/rules/Rugby/en.pug
new file mode 100644 (file)
index 0000000..7bfe485
--- /dev/null
+++ b/client/src/translations/rules/Rugby/en.pug
@@ -0,0 +1,18 @@
+p.boxed
+  | Only pawns. The first who crosses the board wins.
+
+p.
+  Pawns are given extra abilities: they can also move (but not capture)
+  like a king. The goal is to bring a pawn on the last rank.
+
+figure.diagram-container
+  .diagram
+    | fen:pppppppp/8/8/8/8/8/8/PPPPPPPP:
+  figcaption Initial position.
+
+h3 Source
+
+p
+  | I've read about this rule on 
+  a(href="http://www.echecspourtous.com/?page_id=7945") this page
+  |  on (in French). It seems interesting :)

diff --git a/client/src/translations/rules/Rugby/es.pug b/client/src/translations/rules/Rugby/es.pug
new file mode 100644 (file)
index 0000000..cf35eba
--- /dev/null
+++ b/client/src/translations/rules/Rugby/es.pug
@@ -0,0 +1,18 @@
+p.boxed
+  | Solo peones. El primer jugador que cruza el tablero gana.
+
+p.
+  Los peones ven aumentar sus poderes: también pueden moverse
+  (pero no capturar) como el rey. El objetivo es traer un peón al última fila.
+
+figure.diagram-container
+  .diagram
+    | fen:pppppppp/8/8/8/8/8/8/PPPPPPPPP:
+  figcaption Posición inicial.
+
+h3 Fuente
+
+p
+  | Descubrí esta regla en
+  a(href="http://www.echecspourtous.com/?page_id=7945") esta página
+  |  (en francés). Se ve interesante :)

diff --git a/client/src/translations/rules/Rugby/fr.pug b/client/src/translations/rules/Rugby/fr.pug
new file mode 100644 (file)
index 0000000..16f3a81
--- /dev/null
+++ b/client/src/translations/rules/Rugby/fr.pug
@@ -0,0 +1,19 @@
+p.boxed
+  | Seulement des pions. Le premier qui traverse l'échiquier gagne.
+
+p.
+  Les pions voient leurs pouvoirs augmenter : ils peuvent aussi se déplacer
+  (mais pas capturer) comme des rois. L'objectif est d'amener un pion sur la
+  dernière rangée.
+
+figure.diagram-container
+  .diagram
+    | fen:pppppppp/8/8/8/8/8/8/PPPPPPPP:
+  figcaption Position initiale.
+
+h3 Source
+
+p
+  | J'ai découvert cette règle sur 
+  a(href="http://www.echecspourtous.com/?page_id=7945") cette page
+  | . Elle semble intéressante :)

diff --git a/client/src/variants/Rugby.js b/client/src/variants/Rugby.js
new file mode 100644 (file)
index 0000000..04306c2
--- /dev/null
+++ b/client/src/variants/Rugby.js
@@ -0,0 +1,58 @@
+import { ChessRules } from "@/base_rules";
+import { ArrayFun } from "@/utils/array";
+
+export class RugbyRules extends ChessRules {
+  static get HasFlags() {
+    return false;
+  }
+
+  static get PawnSpecs() {
+    return Object.assign(
+      {},
+      ChessRules.PawnSpecs,
+      { promotions: [V.PAWN] }
+    );
+  }
+
+  getPotentialMovesFrom(sq) {
+    // There are only pawns:
+    return this.getPotentialPawnMoves(sq);
+  }
+
+  getPotentialPawnMoves(sq) {
+    const moves = super.getPotentialPawnMoves(sq);
+    // Add king movements, without capturing
+    const steps =
+      this.turn == 'w'
+        ? [ [-1,-1], [-1,1], [0,1], [0,-1], [1,-1], [1,0], [1,1] ]
+        : [ [1,-1], [1,1], [0,1], [0,-1], [-1,-1], [-1,0], [-1,1] ];
+    let addMoves = this.getSlideNJumpMoves(sq, steps, "oneStep");
+    return moves.concat(addMoves.filter(m => m.vanish.length == 1));
+  }
+
+  static GenRandInitFen() {
+    // Non-randomized variant. En-passant possible:
+    return "pppppppp/8/8/8/8/8/8/PPPPPPPP w 0 -";
+  }
+
+  filterValid(moves) {
+    return moves;
+  }
+
+  prePlay() {}
+  postPlay() {}
+  preUndo() {}
+  postUndo() {}
+
+  getCurrentScore() {
+    // Turn has changed:
+    const color = V.GetOppCol(this.turn);
+    const lastRank = (color == "w" ? 0 : V.size.x - 1);
+    if (ArrayFun.range(8).some(i => this.getColor(lastRank, i) == color))
+      // The opposing edge is reached!
+      return color == "w" ? "1-0" : "0-1";
+    if (this.atLeastOneMove()) return "*";
+    // Stalemate (will probably never happen)
+    return "1/2";
+  }
+};

diff --git a/server/db/populate.sql b/server/db/populate.sql
index a192106..cee2970 100644 (file)
--- a/server/db/populate.sql
+++ b/server/db/populate.sql
@@ -35,8 +35,9 @@ insert or ignore into Variants (name,description) values
   ('Marseille', 'Move twice'),
   ('Racingkings', 'Kings cross the 8x8 board'),
   ('Rifle', 'Shoot pieces'),
-  ('Royalrace', 'Kings cross the 11x11 board'),
   ('Recycle', 'Reuse pieces'),
+  ('Royalrace', 'Kings cross the 11x11 board'),
+  ('Rugby', 'Score a try'),
   ('Shatranj', 'Ancient rules'),
   ('Suicide', 'Lose all pieces'),
   ('Suction', 'Attract opposite king'),