From 7ef68374e8a58684b299b0f46f7ed850d5a87190 Mon Sep 17 00:00:00 2001
From: tslil <tslil@posteo.de>
Date: Sun, 6 Sep 2026 17:24:44 +0100
Subject: cleanup, match now plays pairs of symmetric games

---
 src/match.c | 60 +++++++++++++++++++++++++++++-------------------------------
 1 file changed, 29 insertions(+), 31 deletions(-)

(limited to 'src/match.c')

diff --git a/src/match.c b/src/match.c
index 94afe48..6ae9fa7 100644
--- a/src/match.c
+++ b/src/match.c
@@ -57,10 +57,6 @@ static inline float six_cand(tak_state_p state) {
 
 static tak_state_p state;
 
-// ===================================================================
-// negamax progress hook (silent)
-// ===================================================================
-
 void negamax_display_progress(const uint8_t cur_depth,
                               const uint8_t init_depth,
                               const uint32_t length) {
@@ -116,11 +112,34 @@ static int play_game(const nn_function current_fn, const nn_function cand_fn,
   }
 }
 
-// ===================================================================
-// Main
-// ===================================================================
+void do_game(const uint8_t size, const uint8_t random_opening_length, const enum COLOUR current_fn_colour) {
+  state = new_tak_state(size);
+  negamax_init(size);
+
+  const nn_function current_fn =
+    (size == 5) ? &five_nn_fn : &six_nn_fn;
+  const nn_function cand_fn = (size == 5) ? &five_cand : &six_cand;
+
+  const int winner = play_game(current_fn, cand_fn, current_fn_colour, random_opening_length);
 
-const char *usage =
+  const char *name;
+  if (winner == -1)
+    name = "draw";
+  else if (winner == (int)current_fn_colour)
+    name = "current";
+  else
+    name = "candidate";
+  printf("%s %u\n", name, state->ply);
+
+  negamax_free();
+  free_tak_state(state);
+}
+
+  // ===================================================================
+  // Main
+  // ===================================================================
+
+  const char *usage =
   "match, one Tak game of the current weights against the candidate.\n\n\
 usage: match <size> <random_opening_length> <depth>\n\n\
 This binary is linked with both the include/weight_* files and the include/cand_weight_* files. It plays a single <size>x<size> game, with a random side choice and both sides using <random_opening_length> random moves at the start of the game. The result format is:\n\n\
@@ -147,29 +166,8 @@ int main(int argc, char **argv) {
     0x9E3779B97F4A7C15ULL +
     0xC0FFEE;
 
-  state = new_tak_state(size);
-  negamax_init(size);
-
-  const nn_function current_fn =
-    (size == 5) ? &five_nn_fn : &six_nn_fn;
-  const nn_function cand_fn =
-    (size == 5) ? &five_cand
-    : &six_cand;
-
-  const enum COLOUR current_fn_colour = rand32() % 2 ? C_WHITE : C_BLACK;
-  const int winner = play_game(current_fn, cand_fn, current_fn_colour, random_opening_length);
-
-  const char *name;
-  if (winner == -1)
-    name = "draw";
-  else if (winner == (int)current_fn_colour)
-    name = "current";
-  else
-    name = "candidate";
-  printf("%s %u\n", name, state->ply);
-
-  negamax_free();
-  free_tak_state(state);
+  do_game(size, random_opening_length, C_BLACK);
+  do_game(size, random_opening_length, C_WHITE);
 
   return EXIT_SUCCESS;
 }
-- 
cgit v1.3.1