Open strategy files and pass them to the game loop

Also fixed a bug where we could have gone off the upper bounds of the
board.

2 files changed, 27 insertions, 4 deletions

diff --git a/src/game_loop.c b/src/game_loop.c
index bdb37f5..22c624e 100644
--- a/src/game_loop.c
+++ b/src/game_loop.c
@@ -39,9 +39,30 @@ enum player_color get_current_player(void) { return current_player; }
 struct move (*player_one_get_move)();
 struct move (*player_two_get_move)();
 
-enum player_color game_loop() {
+static struct move current_player_move(enum player_color current_player,
+        FILE *player_one_strategy,
+        FILE *player_two_strategy) {
+    struct move move = {-1, -1};
+
+    if ((current_player == WHITE && player_one_strategy == NULL) ||
+            (current_player == BLACK && player_two_strategy == NULL)) {
+        move = prompt_get_move(current_player);
+    } else if (current_player == WHITE) {
+        move = get_scm_move(player_one_strategy);
+    } else if (current_player == BLACK) {
+        move = get_scm_move(player_two_strategy);
+    }
+
+    return move;
+}
+
+enum player_color game_loop(FILE *player_one_strategy,
+        FILE *player_two_strategy) {
     initialize_board();
-    using_history();
+
+    if (player_one_strategy == NULL || player_two_strategy == NULL) {
+        using_history();
+    }
 
     current_player = WHITE;
 #define other_player (current_player == WHITE ? BLACK : WHITE)
@@ -55,7 +76,9 @@ enum player_color game_loop() {
 
 #undef other_player
 
-    rl_clear_history();
+    if (player_one_strategy == NULL || player_two_strategy == NULL) {
+        rl_clear_history();
+    }
 
     return get_winner();
 }
diff --git a/src/valid_moves.c b/src/valid_moves.c
index bd53833..e8e72f6 100644
--- a/src/valid_moves.c
+++ b/src/valid_moves.c
@@ -31,7 +31,7 @@ bool is_valid_move(const enum player_color current_player,
   }
 
   // The move must be below the upper bounds of the board.
-  if (move.row >= 8 || move.col >= 8) {
+  if (move.row > 8 || move.col > 8) {
     return false;
   }