Data commit

Task/Nim-game/Wren/nim-game.wren

@@ -0,0 +1,24 @@
+import "io" for Stdin, Stdout
+
+var showTokens = Fn.new { |tokens| System.print("Tokens remaining %(tokens)\n") }
+
+var tokens = 12
+while (true) {
+    showTokens.call(tokens)
+    System.write("  How many tokens 1, 2 or 3? ")
+    Stdout.flush()
+    var t = Num.fromString(Stdin.readLine())
+    if (t.type != Num || !t.isInteger || t < 1 || t > 3) {
+        System.print("\nMust be an integer between 1 and 3, try again.\n")
+    } else {
+        var ct = 4 - t
+        var s = (ct != 1) ? "s" : ""
+        System.write("  Computer takes %(ct) token%(s)\n\n")
+        tokens = tokens - 4
+    }
+    if (tokens == 0) {
+        showTokens.call(0)
+        System.print("  Computer wins!")
+        break
+    }
+}