ext/khetai/khetai.c in khetai-0.1.8 vs ext/khetai/khetai.c in khetai-0.2.0

@@ -1,31 +1,47 @@
 #include <ruby.h>
 #include <stdlib.h>
 #include <time.h>
 #include "khetai_lib.h"
 
-time_t start_time;
-int max_time;
-
 VALUE move(VALUE self, VALUE board_array, VALUE player, VALUE max_depth, VALUE _max_time)
 {
     srand((unsigned)time(NULL));
 
+    // khetai_lib assumes an extra level of padding around the board
     char *init_board[120];
     unsigned int array_size = (unsigned int)RARRAY_LEN(board_array);
+
+    // top and bottom row padding
+    for (unsigned int i = 0; i < 12; i++)
+    {
+        init_board[i] = "--";
+        init_board[108 + i] = "--";
+    }
+
+    // left and right column padding
+    for (unsigned int i = 0; i < 8; i++)
+    {
+        init_board[12 * (i + 1)] = "--";
+        init_board[12 * (i + 2) - 1] = "--";
+    }
+
+    // fill in the rest of the baord passed from ruby
     for (unsigned int i = 0; i < array_size; i++)
     {
         VALUE square = rb_ary_entry(board_array, i);
-        init_board[i] = StringValueCStr(square);
+        init_board[13 + ((i % 10) + ((i / 10) * 12))] = StringValueCStr(square);
     }
 
     reset_undo();
     init_zobrist();
     setup_board(init_board);
 
-    start_time = time(NULL);
-    max_time = NUM2INT(_max_time);
+    time_t start_time = time(NULL);
+    int max_time = NUM2INT(_max_time);
+    set_time_parameters(max_time, start_time);
 
+    // iterative deepening
     int depth = 1;
     Move best_move = (Move)0;
     Move current_move = (Move)0;
     while ((time(NULL) - start_time < max_time) && (depth <= NUM2INT(max_depth)))
     {