update

[xogo.git] / variants / Crossing / class.js

diff --git a/variants/Crossing/class.js b/variants/Crossing/class.js
new file mode 100644 (file)
index 0000000..75665a5
--- /dev/null
+++ b/variants/Crossing/class.js
@@ -0,0 +1,34 @@
+import ChessRules from "/base_rules.js";
+
+export default class CrossingRules extends ChessRules {
+
+  getSvgChessboard() {
+    let svg = super.getSvgChessboard();
+    return (
+      svg.slice(0, -6) +
+      '<line x1="0" y1="40" x2="80" y2="40" ' +
+      'style="stroke:black;stroke-width:0.2"/></svg>'
+    );
+  }
+
+  getCurrentScore(move_s) {
+    const res = super.getCurrentScore(move_s);
+    if (res != "*")
+      return res;
+    // Turn has changed:
+    const color = V.GetOppTurn(this.turn);
+    const secondHalf = (color == 'w' ? [0, 1, 2, 3] : [4, 5, 6, 7]);
+    for (let move of move_s) {
+      if (
+        move.appear.length >= 1 &&
+        move.appear[0].p == 'k' &&
+        secondHalf.includes(move.appear[0].x)
+      ) {
+        // Half-board is crossed
+        return color == "w" ? "1-0" : "0-1";
+      }
+    }
+    return "*";
+  }
+
+};