ext/khetai/khetai.c in khetai-0.3.0 vs ext/khetai/khetai.c in khetai-0.3.2

@@ -1,10 +1,17 @@
 #include "khetai_lib.h"
 #include <ruby.h>
 #include <stdlib.h>
 #include <time.h>
 
+static int convert_index(int i) {
+    int row = (i / 12) - 1;
+    int col = (i % 12) - 1;
+
+    return (row * 10) + col;
+}
+
 VALUE move(VALUE self, VALUE board_array, VALUE _player, VALUE _max_depth, VALUE _max_time) {
     // verify parameters
     int player = NUM2INT(_player);
     if (player < 0 || player > 1) {
         rb_raise(rb_eArgError, "player must be 0 (silver) or 1 (red)");
@@ -88,11 +95,11 @@
         depth++;
     }
     make_move(best_move);
 
     VALUE out = rb_ary_new2(3);
-    rb_ary_store(out, 0, INT2NUM(get_start(best_move)));
-    rb_ary_store(out, 1, INT2NUM(get_end(best_move)));
+    rb_ary_store(out, 0, INT2NUM(convert_index(get_start(best_move))));
+    rb_ary_store(out, 1, INT2NUM(convert_index(get_end(best_move))));
     rb_ary_store(out, 2, INT2NUM(get_rotation(best_move)));
 
     return out;
 }