Several small improvements + integrate options + first working draft of Cwda

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

diff --git a/client/src/variants/Parachute.js b/client/src/variants/Parachute.js
index 0718635..35ca6fb 100644 (file)
--- a/client/src/variants/Parachute.js
+++ b/client/src/variants/Parachute.js
@@ -1,6 +1,12 @@
 import { ChessRules, PiPo, Move } from "@/base_rules";
 
 export class ParachuteRules extends ChessRules {
+
+  static get Options() {
+    // TODO: later, allow variant, placing piece giving check maybe...
+    return null;
+  }
+
   static get HasFlags() {
     return false;
   }
@@ -14,6 +20,25 @@ export class ParachuteRules extends ChessRules {
     return true;
   }
 
+  static IsGoodPosition(position) {
+    if (position.length == 0) return false;
+    const rows = position.split("/");
+    if (rows.length != V.size.x) return false;
+    for (let row of rows) {
+      let sumElts = 0;
+      for (let i = 0; i < row.length; i++) {
+        if (V.PIECES.includes(row[i].toLowerCase())) sumElts++;
+        else {
+          const num = parseInt(row[i], 10);
+          if (isNaN(num)) return false;
+          sumElts += num;
+        }
+      }
+      if (sumElts != V.size.y) return false;
+    }
+    return true;
+  }
+
   static ParseFen(fen) {
     const fenParts = fen.split(" ");
     return Object.assign(
@@ -46,24 +71,25 @@ export class ParachuteRules extends ChessRules {
 
   setOtherVariables(fen) {
     super.setOtherVariables(fen);
-    const fenParsed = V.ParseFen(fen);
     // Also init reserves (used by the interface to show landable pieces)
+    const reserve =
+      V.ParseFen(fen).reserve.split("").map(x => parseInt(x, 10));
     this.reserve = {
       w: {
-        [V.PAWN]: parseInt(fenParsed.reserve[0]),
-        [V.ROOK]: parseInt(fenParsed.reserve[1]),
-        [V.KNIGHT]: parseInt(fenParsed.reserve[2]),
-        [V.BISHOP]: parseInt(fenParsed.reserve[3]),
-        [V.QUEEN]: parseInt(fenParsed.reserve[4]),
-        [V.KING]: parseInt(fenParsed.reserve[5])
+        [V.PAWN]: reserve[0],
+        [V.ROOK]: reserve[1],
+        [V.KNIGHT]: reserve[2],
+        [V.BISHOP]: reserve[3],
+        [V.QUEEN]: reserve[4],
+        [V.KING]: reserve[5]
       },
       b: {
-        [V.PAWN]: parseInt(fenParsed.reserve[6]),
-        [V.ROOK]: parseInt(fenParsed.reserve[7]),
-        [V.KNIGHT]: parseInt(fenParsed.reserve[8]),
-        [V.BISHOP]: parseInt(fenParsed.reserve[9]),
-        [V.QUEEN]: parseInt(fenParsed.reserve[10]),
-        [V.KING]: parseInt(fenParsed.reserve[11])
+        [V.PAWN]: reserve[6],
+        [V.ROOK]: reserve[7],
+        [V.KNIGHT]: reserve[8],
+        [V.BISHOP]: reserve[9],
+        [V.QUEEN]: reserve[10],
+        [V.KING]: reserve[11]
       }
     };
   }
@@ -166,6 +192,13 @@ export class ParachuteRules extends ChessRules {
     return true;
   }
 
+  underCheck(color) {
+    if (this.kingPos[color][0] < 0)
+      // A king outside the board isn't under check
+      return false;
+    return this.isAttacked(this.kingPos[color], V.GetOppCol(color));
+  }
+
   prePlay(move) {
     super.prePlay(move);
     if (move.vanish.length == 0) this.reserve[this.turn][move.appear[0].p]--;
@@ -207,4 +240,5 @@ export class ParachuteRules extends ChessRules {
       move.appear[0].p != V.PAWN ? move.appear[0].p.toUpperCase() : "";
     return piece + "@" + V.CoordsToSquare(move.end);
   }
+
 };