limit island size from configuration, deal with existing units.

src/bind_gmtool.c

@@ -150,10 +150,9 @@ static int tolua_make_island(lua_State * L)
     int x = (int)tolua_tonumber(L, 1, 0);
     int y = (int)tolua_tonumber(L, 2, 0);
     int s = (int)tolua_tonumber(L, 3, 0);
-    int n = (int)tolua_tonumber(L, 4, s / 3);
 
-    n = build_island_e3(NULL, x, y, n, s);
+    s = build_island_e3(x, y, s, NULL, 0);
-    lua_pushinteger(L, n);
+    lua_pushinteger(L, s);
     return 1;
 }
 

src/gmtool.c

@@ -912,15 +912,15 @@ static void handlekey(state * st, int c)
         break;
     case 'B':
         cnormalize(&st->cursor, &nx, &ny);
-        minpop = config_get_int("editor.population.min", 8);
+        minpop = config_get_int("editor.island.min", 8);
-        maxpop = config_get_int("editor.population.max", minpop);
+        maxpop = config_get_int("editor.island.max", minpop);
         if (maxpop > minpop) {
             n = rng_int() % (maxpop - minpop) + minpop;
         }
         else {
             n = minpop;
         }
-        build_island_e3(NULL, nx, ny, n, n * 3);
+        build_island_e3(nx, ny, n, NULL, 0);
         st->modified = 1;
         st->wnd_info->update |= 1;
         st->wnd_status->update |= 1;

src/modules/autoseed.c

@@ -776,15 +776,15 @@ const terrain_type *random_terrain_e3(direction_t dir)
     return random_terrain(terrainarr, distribution, GEOMAX);
 }
 
-int
+static int
 random_neighbours(region * r, region_list ** rlist,
-const terrain_type * (*terraformer) (direction_t))
+const terrain_type * (*terraformer) (direction_t), int n)
 {
     int nsize = 0;
     direction_t dir;
     for (dir = 0; dir != MAXDIRECTIONS; ++dir) {
         region *rn = rconnect(r, dir);
-        if (rn == NULL || !rn->land) {
+        if (rn == NULL || (!rn->units && !rn->land)) {
             const terrain_type *terrain = terraformer(dir);
             if (!rn) {
                 plane *pl = rplane(r);
@@ -796,7 +796,9 @@ const terrain_type * (*terraformer) (direction_t))
             terraform_region(rn, terrain);
             regionqueue_push(rlist, rn);
             if (rn->land) {
-                ++nsize;
+                if (++nsize >= n) {
+                    break;
+                }
             }
         }
     }
@@ -906,7 +908,7 @@ static void starting_region(newfaction ** players, region * r, region * rn[])
 }
 
 /* E3A island generation */
-int build_island_e3(newfaction ** players, int x, int y, int numfactions, int minsize)
+int build_island_e3(int x, int y, int minsize, newfaction ** players, int numfactions)
 {
 #define MIN_QUALITY 1000
     int nfactions = 0;
@@ -917,9 +919,10 @@ int build_island_e3(newfaction ** players, int x, int y, int numfactions, int mi
     int nsize = 1;
     int q, maxq = INT_MIN, minq = INT_MAX;
 
-    if (!r)
+    if (r && r->units) return 0;
+    if (!r) {
         r = new_region(x, y, pl, 0);
-    assert(!r->units);
+    }
     do {
         terraform_region(r, random_terrain_e3(NODIRECTION));
     } while (!r->land);
@@ -928,10 +931,10 @@ int build_island_e3(newfaction ** players, int x, int y, int numfactions, int mi
         fset(r, RF_MARK);
         if (r->land) {
             if (nsize < minsize) {
-                nsize += random_neighbours(r, &rlist, &random_terrain_e3);
+                nsize += random_neighbours(r, &rlist, &random_terrain_e3, minsize-nsize);
             }
             else {
-                nsize += random_neighbours(r, &rlist, &get_ocean);
+                nsize += random_neighbours(r, &rlist, &get_ocean, minsize - nsize);
             }
         }
         regionqueue_push(&island, r);

src/modules/autoseed.h

@@ -38,8 +38,7 @@ extern "C" {
     extern const struct terrain_type *random_terrain(const struct terrain_type
         *terrains[], int distribution[], int size);
 
-    extern int seed_adamantium(struct region *r, int base);
+    extern int build_island_e3(int x, int y, int minsize, newfaction **players, int numfactions);
-    extern int build_island_e3(newfaction **players, int x, int y, int numfactions, int minsize);
 
 #ifdef __cplusplus
 }