X-Git-Url: https://git.distorted.org.uk/~mdw/sgt/puzzles/blobdiff_plain/3a23d4250db419f258a373eee9b086d26a9b8b6f..e1a7869e0eff2a80f58c3c77c4ab072b0df18118:/bridges.c

diff --git a/bridges.c b/bridges.c
index 5a98ac1..a5eef25 100644
--- a/bridges.c
+++ b/bridges.c
@@ -940,6 +940,7 @@ static void map_update_possibles(game_state *state)
         idx = x;
         s = e = -1;
         bl = 0;
+        maxb = state->params.maxb;     /* placate optimiser */
         /* Unset possible flags until we find an island. */
         for (y = 0; y < state->h; y++) {
             is_s = IDX(state, gridi, idx);
@@ -985,6 +986,7 @@ static void map_update_possibles(game_state *state)
         idx = y*w;
         s = e = -1;
         bl = 0;
+        maxb = state->params.maxb;     /* placate optimiser */
         for (x = 0; x < state->w; x++) {
             is_s = IDX(state, gridi, idx);
             if (is_s) {
@@ -1462,7 +1464,7 @@ static int solve_island_stage2(struct island *is, int *didsth_r)
     return 1;
 }
 
-static int solve_island_subgroup(struct island *is, int direction, int n)
+static int solve_island_subgroup(struct island *is, int direction)
 {
     struct island *is_join;
     int nislands, *dsf = is->state->solver->dsf;
@@ -1471,7 +1473,7 @@ static int solve_island_subgroup(struct island *is, int direction, int n)
     debug(("..checking subgroups.\n"));
 
     /* if is isn't full, return 0. */
-    if (n < is->count) {
+    if (island_countbridges(is) < is->count) {
         debug(("...orig island (%d,%d) not full.\n", is->x, is->y));
         return 0;
     }
@@ -1497,7 +1499,7 @@ static int solve_island_subgroup(struct island *is, int direction, int n)
             /* we have a full subgroup that isn't the whole set.
              * This isn't allowed. */
             debug(("island at (%d,%d) makes full subgroup, disallowing.\n",
-                   is->x, is->y, n));
+                   is->x, is->y));
             return 1;
         } else {
             debug(("...has finished puzzle.\n"));
@@ -1536,10 +1538,6 @@ static int solve_island_stage3(struct island *is, int *didsth_r)
     if (missing <= 0) return 1;
 
     for (i = 0; i < is->adj.npoints; i++) {
-        /* We only do right- or down-pointing bridges. */
-        if (is->adj.points[i].dx == -1 ||
-            is->adj.points[i].dy == -1) continue;
-
         x = is->adj.points[i].x;
         y = is->adj.points[i].y;
         spc = island_adjspace(is, 1, missing, i);
@@ -1560,7 +1558,7 @@ static int solve_island_stage3(struct island *is, int *didsth_r)
             solve_join(is, i, n, 0);
             map_update_possibles(is->state);
 
-            if (solve_island_subgroup(is, i, n) ||
+            if (solve_island_subgroup(is, i) ||
                 solve_island_impossible(is->state)) {
                 maxb = n-1;
                 debug(("island at (%d,%d) d(%d,%d) new max of %d bridges:\n",
@@ -1650,7 +1648,7 @@ static int solve_island_stage3(struct island *is, int *didsth_r)
         }
         map_update_possibles(is->state);
 
-        if (solve_island_subgroup(is, -1, n))
+        if (solve_island_subgroup(is, -1))
             got = 1;
 
         for (j = 0; j < is->adj.npoints; j++)
@@ -2159,8 +2157,8 @@ struct game_drawstate {
     int show_hints;
 };
 
-static char *update_drag_dst(game_state *state, game_ui *ui, game_drawstate *ds,
-                            int nx, int ny)
+static char *update_drag_dst(game_state *state, game_ui *ui,
+                             const game_drawstate *ds, int nx, int ny)
 {
     int ox, oy, dx, dy, i, currl, maxb;
     struct island *is;
@@ -2255,7 +2253,7 @@ static char *finish_drag(game_state *state, game_ui *ui)
     return dupstr(buf);
 }
 
-static char *interpret_move(game_state *state, game_ui *ui, game_drawstate *ds,
+static char *interpret_move(game_state *state, game_ui *ui, const game_drawstate *ds,
 			    int x, int y, int button)
 {
     int gx = FROMCOORD(x), gy = FROMCOORD(y);