Ticket #41: solve_semeaiS.diff

interface/play_gtp.c

@@ -180 +180 @@
 DECLARE(gtp_set_search_diamond);
 DECLARE(gtp_set_search_limit);
 DECLARE(gtp_showboard);
+DECLARE(gtp_solve_semeaiS);
 DECLARE(gtp_start_sgftrace);
 DECLARE(gtp_surround_map);
 DECLARE(gtp_tactical_analyze_semeai);
@@ -318 +319 @@
   {"set_search_diamond",      gtp_set_search_diamond},
   {"set_search_limit",        gtp_set_search_limit},
   {"showboard",               gtp_showboard},
+  {"solve_semeaiS",           gtp_solve_semeaiS},
   {"start_sgftrace",          gtp_start_sgftrace},
   {"surround_map",            gtp_surround_map},
   {"tactical_analyze_semeai", gtp_tactical_analyze_semeai},
@@ -1970 +1972 @@
               I(move), J(move));
   if (!result_certain && report_uncertainty)
     gtp_printf(" uncertain");
+
+  return gtp_finish_response();
+}  
+
+
+/* Function:  Analyze a semeai
+ * Arguments: dragona, dragonb
+ * Fails:     invalid vertices, empty vertices
+ * Returns:   Semeai status (if play) followed by move to play.
+ *            0=Loser, 1=Winner, 2=Seki, 3=Unknown, 4=Ko
+ */
+static int
+gtp_solve_semeaiS(char *s)
+{
+  int i, j;
+  int k;
+  int dragona, dragonb;
+  int resulta, resultb, move, result_certain;
+  int second_resulta, second_resultb, second_move;
+  int result;
+  
+  k = gtp_decode_coord(s, &i, &j);
+
+  if (k == 0)
+    return gtp_failure("invalid coordinate");
+  dragona = POS(i, j);
+  if (BOARD(i, j) == EMPTY)
+    return gtp_failure("vertex must not be empty");
+
+  if (!gtp_decode_coord(s+k, &i, &j))
+    return gtp_failure("invalid coordinate");
+  dragonb = POS(i, j);
+  if (BOARD(i, j) == EMPTY)
+    return gtp_failure("vertex must not be empty");
+
+  silent_examine_position(EXAMINE_DRAGONS_WITHOUT_OWL);
+  /* to get the variations into the sgf file, clear the reading cache */
+  if (sgf_dumptree)
+    reading_cache_clear();
+
+  if (worm[dragona].invincible) {
+    int attack_code = owl_attack(dragonb, &move, &result_certain, NULL);
+    if (attack_code == 0) {
+      result = 2;
+      move = PASS_MOVE;
+    }
+    else if (attack_code == WIN) {
+      result = 1;
+      if (owl_defend(dragonb, &second_move, &result_certain, NULL) == 0)
+        move = PASS_MOVE;
+    }
+    else
+      result = 4;
+  }
+  else if (worm[dragonb].invincible) {
+    int defense_code = owl_defend(dragona, &move, &result_certain, NULL);
+    if (defense_code == 0) {
+      result = 0;
+      move = PASS_MOVE;
+    }
+    else if (defense_code == WIN) {
+      result = 2;
+      if (owl_attack(dragona, &second_move, &result_certain, NULL) == 0)
+        move = PASS_MOVE;
+    }
+    else
+      result = 4;
+  }
+  else {
+    owl_analyze_semeai(dragona, dragonb, &resulta, &resultb, &move, 1,
+                       &result_certain);
+    owl_analyze_semeai(dragonb, dragona, &second_resulta, &second_resultb,
+                       &second_move, 1, &result_certain);
+
+    if (resulta == 0 && resultb == 0) {
+      result = 0;
+      move = PASS_MOVE;
+    }
+    else if (resulta == WIN && resultb == WIN) {
+      result = 1;
+      if (second_resulta == 0 && second_resultb == 0)
+        move = PASS_MOVE;
+    }
+    else if (resulta == WIN && resultb == 0) {
+      result = 2;
+      if (second_resulta == WIN && second_resultb == 0)
+        move = PASS_MOVE;
+    }
+    else
+      result = 4;
+  }
+  
+  gtp_start_response(GTP_SUCCESS);
+  gtp_mprintf("%d %m", result, I(move), J(move));
 
   return gtp_finish_response();
 }