Elo, probdist: Do not needlessly consider board edges

pasky · Jul 3, 2010 · 3c60f0d · 3c60f0d
1 parent e50f1db
commit 3c60f0d
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Showing 2 changed files with 6 additions and 2 deletions.
diff --git a/playout/elo.c b/playout/elo.c
@@ -223,6 +223,10 @@ playout_elo_choose(struct playout_policy *p, struct board *b, enum stone to_play
 		foreach_8neighbor(b, b->last_move.coord) {
 			if (c == b->ko.coord)
 				continue; // already ignored
+			if (board_at(b, c) != S_NONE) {
+				assert(probdist_one(pd, c) == 0);
+				continue;
+			}
 			ignore_move(c);
 
 			fixp_t val = double_to_fixp(fixp_to_double(probdist_one(pd, c)) * b->gamma->gamma[FEAT_CONTIGUITY][1]);

diff --git a/probdist.c b/probdist.c
@@ -18,8 +18,8 @@ probdist_pick(struct probdist *restrict pd, coord_t *restrict ignore)
 	if (DEBUGL(6))
 		fprintf(stderr, "stab %f / %f\n", fixp_to_double(stab), fixp_to_double(total));
 
-	int r = 0;
-	coord_t c = 0;
+	int r = 1;
+	coord_t c = board_size(pd->b) + 1;
 	while (stab > pd->rowtotals[r]) {
 		if (DEBUGL(6))
 			fprintf(stderr, "[%s] skipping row %f (%f)\n", coord2sstr(c, pd->b), fixp_to_double(pd->rowtotals[r]), fixp_to_double(stab));