2 * Empire - A multi-player, client/server Internet based war game.
3 * Copyright (C) 1986-2020, Dave Pare, Jeff Bailey, Thomas Ruschak,
4 * Ken Stevens, Steve McClure, Markus Armbruster
6 * Empire is free software: you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation, either version 3 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program. If not, see <http://www.gnu.org/licenses/>.
21 * See files README, COPYING and CREDITS in the root of the source
22 * tree for related information and legal notices. It is expected
23 * that future projects/authors will amend these files as needed.
27 * fairland.c: Create a nice, new world
29 * Known contributors to this file:
32 * Markus Armbruster, 2004-2020
40 * Place the capitals on the torus in such a way so as to maximize
41 * their distances from one another. This uses the perturbation
42 * technique of calculus of variations.
44 * 2. Grow start islands ("continents")
46 * For all continents, add the first sector at the capital's location,
47 * and the second right to it. These are the capital sectors. Then
48 * add one sector to each continent in turn, obeying the minimum
49 * distance between continents, until they have the specified size.
51 * The kind of shape they grow into is determined by the "spike
52 * percentage" --- the higher the spike, the more spindly they will
53 * be. If you lower the spike, the continents will be more round.
55 * If growing fails due to lack of room, start over. If it fails too
56 * many times, give up and terminate unsuccessfully.
58 * 3. Place and grow additional islands
60 * Place and grow islands one after the other. Place the first sector
61 * randomly, pick an island size, then grow the island to that size.
63 * Growing works as for continents, except the minimum distance for
64 * additional islands applies, and growing simply stops when there is
67 * 4. Compute elevation
69 * Elevate islands one after the other.
71 * First, place the specified number of mountains randomly.
72 * Probability increases with distance to sea.
74 * Last, elevate mountains and the capitals. Pick coastal mountain
75 * elevation randomly from an interval of medium elevations reserved
76 * for them. Pick non-coastal mountain elevation randomly from an
77 * interval of high elevation reserved for them. Set capital
78 * elevation to a fixed, medium value.
80 * In between, elevate the remaining land one by one, working from
81 * mountains towards the sea, and from the elevation just below the
82 * non-coastal mountains' interval linearly down to 1, avoiding the
83 * coastal mountains' interval.
85 * This gives islands of the same size the same set of elevations,
86 * except for mountains.
88 * Elevate sea: pick a random depth from an interval that deepens with
89 * the distance to land.
93 * Sector resources are simple functions of elevation. You can alter
94 * macros OIL_MAX, IRON_MIN, GOLD_MIN, FERT_MAX, and URAN_MIN to
100 /* define ORE 1 to add resources, define ORE 0 if you want to use another
101 program to add the resources */
103 static int quiet = 0;
105 /* If you don't specify these command line arguments, then these are the
107 #define DEFAULT_SPIKE 10
108 #define DEFAULT_MOUNTAIN 0
109 #define DEFAULT_CONTDIST 2
110 #define DEFAULT_ISLDIST 1
112 /* The following five numbers refer to elevation under which (in the case of
113 fertility or oil) or over which (in the case of iron, gold, and uranium)
114 sectors with that elevation will contain that resource. Elevation ranges
117 /* raise FERT_MAX for more fertility */
120 /* raise OIL_MAX for more oil */
123 /* lower IRON_MIN for more iron */
126 /* lower GOLD_MIN for more gold */
129 /* lower URAN_MIN for more uranium */
139 #include "prototypes.h"
144 /* do not change these 4 defines */
145 #define LANDMIN 1 /* plate altitude for normal land */
146 #define HILLMIN 34 /* plate altitude for hills */
147 #define PLATMIN 36 /* plate altitude for plateau */
148 #define HIGHMIN 98 /* plate altitude for mountains */
150 static void qprint(const char * const fmt, ...)
151 ATTRIBUTE((format (printf, 1, 2)));
153 #define DEFAULT_OUTFILE_NAME "newcap_script"
154 static const char *outfile = DEFAULT_OUTFILE_NAME;
155 /* mark the continents with a * so you can tell them
156 from the islands 1 = mark, 0 = don't mark. */
157 static int AIRPORT_MARKER = 0;
159 /* don't let the islands crash into each other.
160 1 = don't merge, 0 = merge. */
161 static int DISTINCT_ISLANDS = 1;
163 static char *program_name;
165 #define STABLE_CYCLE 4 /* stability required for perterbed capitals */
166 #define INFINITY 999 /* a number which means "BIG" */
168 /* these defines prevent infinite loops:
171 #define COAST_SEARCH_MAX 200 /* how many times do we look for a coast sector
172 when growing continents and islands */
173 #define DRIFT_BEFORE_CHECK ((WORLD_X + WORLD_Y)/2)
174 #define DRIFT_MAX ((WORLD_X + WORLD_Y)*2)
175 #define MOUNTAIN_SEARCH_MAX 1000 /* how long do we try to place mountains */
180 #define new_x(newx) (((newx) + WORLD_X) % WORLD_X)
181 #define new_y(newy) (((newy) + WORLD_Y) % WORLD_Y)
183 static int secs; /* number of sectors grown */
184 static int ctot; /* total number of continents and islands grown */
185 static int *isecs; /* array of how large each island is */
187 static int nc, sc, di, sp, pm, ni, is, id; /* the 8 args to this program */
188 static int *capx, *capy; /* location of the nc capitals */
189 static int *mc, mcc; /* array and counter used for stability
190 check when perturbing */
191 static int spike; /* are we spiking? */
192 static int mind; /* the final distance between capitals that
194 static int dirx[] = { -2, -1, 1, 2, 1, -1 }; /* gyujnb */
195 static int diry[] = { 0, -1, -1, 0, 1, 1 };
197 static int **own; /* owner of the sector. -1 means water */
198 static int **elev; /* elevation of the sectors */
199 static int **sectx, **secty; /* the sectors for each continent */
200 static int **sectc; /* which sectors are on the coast? */
201 static int *vector; /* used for measuring distances */
202 static int *weight; /* used for placing mountains */
203 static int *dsea, *dmoun; /* the dist to the ocean and mountain */
204 static int fl_status; /* is anything wrong? */
205 #define STATUS_NO_ROOM 1 /* there was no room to grow */
206 #define NUMTRIES 10 /* keep trying to grow this many times */
208 static const char *numletter =
209 "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
211 static void help(char *);
212 static void usage(void);
213 static void parse_args(int argc, char *argv[]);
214 static void allocate_memory(void);
215 static void init(void);
216 static int drift(void);
217 static void grow_continents(void);
218 static void create_elevations(void);
219 static void write_sects(void);
220 static void output(void);
221 static int write_newcap_script(void);
222 static int stable(void);
223 static void elevate_land(void);
224 static void elevate_sea(void);
225 static int map_symbol(int x, int y);
226 static void set_coastal_flags(void);
228 static void print_vars(void);
229 static void fl_move(int);
230 static void grow_islands(void);
232 /* Debugging aids: */
233 void print_own_map(void);
234 void print_elev_map(void);
236 /****************************************************************************
238 ****************************************************************************/
241 main(int argc, char *argv[])
244 char *config_file = NULL;
246 unsigned rnd_seed = 0;
249 program_name = argv[0];
251 while ((opt = getopt(argc, argv, "ae:hioqR:s:v")) != EOF) {
257 config_file = optarg;
260 DISTINCT_ISLANDS = 0;
269 rnd_seed = strtoul(optarg, NULL, 10);
279 printf("%s\n\n%s", version, legal);
286 parse_args(argc - optind, argv + optind);
289 rnd_seed = pick_seed();
292 if (emp_config(config_file) < 0)
299 qprint("\n #*# ...fairland rips open a rift in the datumplane... #*#\n\n");
300 qprint("seed is %u\n", rnd_seed);
304 qprint("\ntry #%d (out of %d)...\n", i + 1, NUMTRIES);
305 qprint("placing capitals...\n");
307 qprint("fairland: unstable drift -- try increasing DRIFT_MAX\n");
308 qprint("growing continents...\n");
310 } while (fl_status && ++i < NUMTRIES);
312 fputs("ERROR: World not large enough to hold continents\n",
316 qprint("growing islands:");
318 qprint("\nelevating land...\n");
320 qprint("designating sectors...\n");
322 qprint("adding resources...\n");
323 write_newcap_script();
325 if (chdir(gamedir)) {
326 fprintf(stderr, "Can't chdir to %s (%s)\n", gamedir, strerror(errno));
329 if (!ef_open(EF_SECTOR, EFF_MEM | EFF_NOTIME))
332 qprint("writing to sectors file...\n");
333 if (!ef_close(EF_SECTOR))
337 qprint("\n\nA script for adding all the countries can be found in \"%s\".\n",
340 qprint("\t*** Resources have not been added ***\n");
349 puts("Creating a planet with:\n");
350 printf("%d continents\n", nc);
351 printf("continent size: %d\n", sc);
352 printf("number of islands: %d\n", ni);
353 printf("average size of islands: %d\n", is);
354 printf("spike: %d%%\n", sp);
355 printf("%d%% of land is mountain (each continent will have %d mountains)\n",
356 pm, (pm * sc) / 100);
357 printf("minimum distance between continents: %d\n", di);
358 printf("minimum distance from islands to continents: %d\n", id);
359 printf("World dimensions: %dx%d\n", WORLD_X, WORLD_Y);
367 for (i = 1; i * i < n * 10000; ++i) ;
368 return (i + 50) / 100;
371 /****************************************************************************
372 PARSE COMMAND LINE ARGUMENTS
373 ****************************************************************************/
376 help(char *complaint)
379 fprintf(stderr, "%s: %s\n", program_name, complaint);
380 fprintf(stderr, "Try -h for help.\n");
386 printf("Usage: %s [OPTION]... NC SC [NI] [IS] [SP] [PM] [DI] [ID]\n"
387 " -a airport marker for continents\n"
388 " -e CONFIG-FILE configuration file\n"
390 " -i islands may merge\n"
391 " -o don't set resources\n"
393 " -R SEED seed for random number generator\n"
394 " -s SCRIPT name of script to create (default %s)\n"
395 " -h display this help and exit\n"
396 " -v display version information and exit\n"
397 " NC number of continents\n"
398 " SC continent size\n"
399 " NI number of islands (default NC)\n"
400 " IS average island size (default SC/2)\n"
401 " SP spike percentage: 0 = round, 100 = snake (default %d)\n"
402 " PM percentage of land that is mountain (default %d)\n"
403 " DI minimum distance between continents (default %d)\n"
404 " ID minimum distance from islands to continents (default %d)\n",
405 program_name, dflt_econfig, DEFAULT_OUTFILE_NAME,
406 DEFAULT_SPIKE, DEFAULT_MOUNTAIN, DEFAULT_CONTDIST, DEFAULT_ISLDIST);
410 parse_args(int argc, char *argv[])
413 help("missing arguments");
417 help("too many arguments");
422 puts("fairland: error -- number of continents must be > 0");
428 puts("fairland: error -- size of continents must be > 0");
448 sp = LIMIT_TO(sp, 0, 100);
453 pm = DEFAULT_MOUNTAIN;
460 di = DEFAULT_CONTDIST;
463 puts("fairland: error -- distance between continents must be >= 0");
466 if (di > WORLD_X / 2 || di > WORLD_Y / 2) {
467 puts("fairland: error -- distance between continents too large");
474 id = DEFAULT_ISLDIST;
476 puts("fairland: error -- distance from islands to continents must be >= 0");
479 if (id > WORLD_X || id > WORLD_Y) {
480 puts("fairland: error -- distance from islands to continents too large");
483 if (nc * sc + nc * my_sqrt(sc) * 2 * (di + 1) > WORLD_X * WORLD_Y) {
484 puts("fairland: warning -- world might be too small to fit continents.");
485 puts("arguments should satisfy:");
486 puts("nc*sc*sc + nc*sqrt(sc)*2*(di+1) < WORLD_X * WORLD_Y");
490 /****************************************************************************
491 VARIABLE INITIALIZATION
492 ****************************************************************************/
495 allocate_memory(void)
499 capx = calloc(nc, sizeof(int));
500 capy = calloc(nc, sizeof(int));
501 vector = calloc(WORLD_X + WORLD_Y, sizeof(int));
502 mc = calloc(STABLE_CYCLE, sizeof(int));
503 own = calloc(WORLD_X, sizeof(int *));
504 elev = calloc(WORLD_X, sizeof(int *));
505 for (i = 0; i < WORLD_X; ++i) {
506 own[i] = calloc(WORLD_Y, sizeof(int));
507 elev[i] = calloc(WORLD_Y, sizeof(int));
509 sectx = calloc(nc + ni, sizeof(int *));
510 secty = calloc(nc + ni, sizeof(int *));
511 sectc = calloc(nc + ni, sizeof(int *));
512 isecs = calloc(nc + ni, sizeof(int));
513 weight = calloc(MAX(sc, is * 2), sizeof(int));
514 dsea = calloc(MAX(sc, is * 2), sizeof(int));
515 dmoun = calloc(MAX(sc, is * 2), sizeof(int));
516 for (i = 0; i < nc; ++i) {
517 sectx[i] = calloc(sc, sizeof(int));
518 secty[i] = calloc(sc, sizeof(int));
519 sectc[i] = calloc(sc, sizeof(int));
521 for (i = nc; i < nc + ni; ++i) {
522 sectx[i] = calloc(is * 2, sizeof(int));
523 secty[i] = calloc(is * 2, sizeof(int));
524 sectc[i] = calloc(is * 2, sizeof(int));
532 int i, j, xx = 0, yy = 0;
537 for (i = 0; i < WORLD_X; ++i) {
538 for (j = 0; j < WORLD_Y; ++j) {
540 elev[i][j] = -INFINITY;
544 for (i = 0; i < nc; ++i) {
549 puts("fairland error: world not big enough for all the continents.\n");
557 for (i = 0; i < STABLE_CYCLE; ++i)
561 /****************************************************************************
562 DRIFT THE CAPITALS UNTIL THEY ARE AS FAR AWAY FROM EACH OTHER AS POSSIBLE
563 ****************************************************************************/
565 /* How isolated is capital j?
568 iso(int j, int newx, int newy)
570 int i, md, d = WORLD_X + WORLD_Y;
572 for (i = 0; i < nc; ++i) {
575 md = mapdist(capx[i], capy[i], newx, newy);
583 /* Drift all the capitals
590 for (turns = 0; turns < DRIFT_MAX; ++turns) {
591 if (turns > DRIFT_BEFORE_CHECK && (mind = stable()))
593 for (i = 0; i < nc; ++i)
599 /* Check to see if we have stabilized--can we stop drifting the capitals?
605 int i, isod, d = 0, stab = 1;
607 for (i = 0; i < nc; ++i) {
608 isod = iso(i, capx[i], capy[i]);
612 for (i = 0; i < STABLE_CYCLE; ++i)
616 mcc = (mcc + 1) % STABLE_CYCLE;
620 /* This routine does the actual drifting
626 int i, n, newx, newy;
628 for (i = roll0(6), n = 0; n < 6; i = (i + 1) % 6, ++n) {
629 newx = new_x(capx[j] + dirx[i]);
630 newy = new_y(capy[j] + diry[i]);
631 if (iso(j, newx, newy) >= iso(j, capx[j], capy[j])) {
639 /****************************************************************************
641 ****************************************************************************/
643 /* Look for a coastal sector of continent c
651 for (i = 0; i < secs; ++i) {
653 for (j = 0; j < 6; ++j)
654 if (own[new_x(sectx[c][i] + dirx[j])][new_y(secty[c][i] + diry[j])] == -1)
659 /* Used for measuring distances
671 for (i = 1; i < n && vector[i] == vector[i - 1]; ++i) ;
674 return i > 1 || vector[0] > 0;
677 /* Test to see if we're allowed to grow there: the arguments di and id
680 try_to_grow(int c, int newx, int newy, int d)
684 for (i = 1; i <= d; ++i) {
685 for (j = 0; j < i; ++j)
690 for (j = 0; j < i; ++j) {
691 px = new_x(px + dirx[vector[j]]);
692 py = new_y(py + diry[vector[j]]);
694 if (own[px][py] != -1 &&
696 (DISTINCT_ISLANDS || own[px][py] < nc))
698 } while (next_vector(i));
700 sectx[c][secs] = newx;
701 secty[c][secs] = newy;
706 /* Move along the coast in a clockwise direction.
710 next_coast(int c, int x, int y, int *xp, int *yp)
712 int i, nx, ny, wat = 0;
720 for (i = 0; i < 12; ++i) {
721 nx = new_x(x + dirx[i % 6]);
722 ny = new_y(y + diry[i % 6]);
723 if (own[nx][ny] == -1)
725 if (wat && own[nx][ny] == c) {
733 /* Choose a sector to grow from
745 i = starti = (spike && sectc[c][secs - 1]) ? secs - 1 : roll0(secs);
750 } while (i != starti);
757 /* Grow continent c by 1 sector
761 grow_one_sector(int c)
763 int done, coast_search, try1, x, y, newx, newy, i, n, sx, sy;
765 spike = roll0(100) < sp;
766 if ((try1 = new_try(c)) == -1)
768 x = sx = sectx[c][try1];
769 y = sy = secty[c][try1];
774 for (i = roll0(6), n = 0; n < 12 && !done; i = (i + 1) % 6, ++n) {
775 newx = new_x(x + dirx[i]);
776 newy = new_y(y + diry[i]);
777 if (own[newx][newy] == -1 &&
779 (own[new_x(x+dirx[(i+5)%6])][new_y(y+diry[(i+5)%6])] == -1 &&
780 own[new_x(x+dirx[(i+1)%6])][new_y(y+diry[(i+1)%6])] == -1)))
781 if (try_to_grow(c, newx, newy, c < nc ? di : id))
785 for (i = roll0(6), n = 0; n < 6 && !done; i = (i + 1) % 6, ++n) {
786 newx = new_x(x + dirx[i]);
787 newy = new_y(y + diry[i]);
788 if (own[newx][newy] == -1)
789 if (try_to_grow(c, newx, newy, c < nc ? di : id))
792 next_coast(c, x, y, &x, &y);
794 } while (!done && coast_search < COAST_SEARCH_MAX &&
795 (secs == 1 || x != sx || y != sy));
796 if (!done && c < nc) {
797 qprint("fairland: error -- continent %c had no room to grow!\n",
799 fl_status |= STATUS_NO_ROOM;
804 /* Grow all the continents
807 grow_continents(void)
811 for (c = 0; c < nc; ++c) {
812 sectx[c][0] = capx[c];
813 secty[c][0] = capy[c];
814 own[sectx[c][0]][secty[c][0]] = c;
815 sectx[c][1] = new_x(capx[c] + 2);
816 secty[c][1] = capy[c];
817 own[sectx[c][1]][secty[c][1]] = c;
820 for (secs = 2; secs < sc && !fl_status; ++secs) {
821 for (c = 0; c < nc; ++c) {
826 for (c = 0; c < nc; ++c)
830 qprint("Only managed to grow %d out of %d sectors.\n", secs, sc);
834 /****************************************************************************
836 ****************************************************************************/
838 /* Choose a place to start growing an island from
841 place_island(int c, int *xp, int *yp)
844 int ssy = roll0(WORLD_Y);
845 int ssx = new_x(roll0(WORLD_X / 2) * 2 + ssy % 2);
847 if (ssx > WORLD_X - 2)
848 ssx = new_x(ssx + 2);
849 for (d = di + id; d >= id; --d) {
853 for (*yp = sy; *xp != sx || *yp != sy; *xp += 2) {
854 if (*xp >= WORLD_X) {
855 *yp = new_y(*yp + 1);
857 if (*xp == sx && *yp == sy)
860 if (own[*xp][*yp] == -1 && try_to_grow(c, *xp, *yp, d))
867 /* Grow all the islands
875 for (c = nc; c < nc + ni; ++c) {
877 if (!place_island(c, &x, &y))
879 isiz = roll(is) + roll0(is);
883 } while (secs < isiz && grow_one_sector(c));
885 qprint(" %d(%d)", c - nc + 1, secs);
891 /****************************************************************************
893 ****************************************************************************/
895 create_elevations(void)
901 /* Generic function for finding the distance to the closest sea, land, or
905 distance_to_what(int x, int y, int flag)
909 for (d = 1; d < 5; ++d) {
910 for (j = 0; j < d; ++j)
915 for (j = 0; j < d; ++j) {
916 px = new_x(px + dirx[vector[j]]);
917 py = new_y(py + diry[vector[j]]);
920 case 0: /* distance to sea */
921 if (own[px][py] == -1)
924 case 1: /* distance to land */
925 if (own[px][py] != -1)
928 case 2: /* distance to mountain */
929 if (elev[px][py] == INFINITY)
933 } while (next_vector(d));
938 #define ELEV elev[sectx[c][i]][secty[c][i]]
939 #define distance_to_sea() (sectc[c][i]?1:distance_to_what(sectx[c][i], secty[c][i], 0))
940 #define distance_to_mountain() distance_to_what(sectx[c][i], secty[c][i], 2)
942 /* Decide where the mountains go
947 int i, mountain_search, k, c, total, ns, nm, highest, where, h, newk,
950 for (c = 0; c < ctot; ++c) {
952 ns = (c < nc) ? sc : isecs[c];
953 nm = (pm * ns) / 100;
955 /* Place the mountains */
957 for (i = 0; i < ns; ++i) {
958 dsea[i] = distance_to_sea();
959 weight[i] = (total += (dsea[i] * dsea[i]));
962 for (k = nm, mountain_search = 0;
963 k && mountain_search < MOUNTAIN_SEARCH_MAX;
966 for (i = 0; i < ns; ++i)
967 if (r < weight[i] && ELEV == -INFINITY &&
969 ((!(capx[c] == sectx[c][i] &&
970 capy[c] == secty[c][i])) &&
971 (!(new_x(capx[c] + 2) == sectx[c][i] &&
972 capy[c] == secty[c][i]))))) {
979 /* Elevate land that is not mountain and not capital */
981 for (i = 0; i < ns; ++i)
982 dmoun[i] = distance_to_mountain();
983 dk = (ns - nm - ((c < nc) ? 3 : 1) > 0) ?
984 (100 * (HIGHMIN - LANDMIN)) / (ns - nm - ((c < nc) ? 3 : 1)) :
986 for (k = 100 * (HIGHMIN - 1);; k -= dk) {
989 for (i = 0; i < ns; ++i) {
990 if (ELEV != INFINITY &&
991 (c >= nc || ((!(capx[c] == sectx[c][i] &&
992 capy[c] == secty[c][i])) &&
993 (!(new_x(capx[c] + 2) == sectx[c][i] &&
994 capy[c] == secty[c][i]))))) {
995 h = 3 * (5 - dmoun[i]) + dsea[i];
1005 if (newk >= HILLMIN && newk < PLATMIN)
1009 elev[sectx[c][where]][secty[c][where]] = newk;
1010 dsea[where] = -INFINITY;
1011 dmoun[where] = INFINITY;
1014 /* Elevate the mountains and capitals */
1016 for (i = 0; i < ns; ++i) {
1017 if (ELEV == INFINITY) {
1019 ELEV = HILLMIN + roll0(PLATMIN - HILLMIN);
1021 ELEV = HIGHMIN + roll0((256 - HIGHMIN) / 2) +
1022 roll0((256 - HIGHMIN) / 2);
1023 } else if (c < nc &&
1024 (((capx[c] == sectx[c][i] && capy[c] == secty[c][i])) ||
1025 ((new_x(capx[c] + 2) == sectx[c][i] &&
1026 capy[c] == secty[c][i]))))
1032 #define distance_to_land() distance_to_what(x, y, 1)
1039 for (y = 0; y < WORLD_Y; ++y) {
1040 for (x = y % 2; x < WORLD_X; x += 2) {
1041 if (elev[x][y] == -INFINITY)
1042 elev[x][y] = -roll(distance_to_land() * 20 + 27);
1047 /****************************************************************************
1049 ****************************************************************************/
1056 fert = LANDMIN - e + 40;
1057 else if (e < FERT_MAX)
1058 fert = (120 * (FERT_MAX - e)) / (FERT_MAX - LANDMIN);
1069 oil = (LANDMIN - e) * 2 + roll0(2);
1070 else if (e <= OIL_MAX)
1071 oil = (120 * (OIL_MAX - e + 1)) / (OIL_MAX - LANDMIN + 1);
1081 if (e >= IRON_MIN && e < HIGHMIN)
1082 iron = (120 * (e - IRON_MIN + 1)) / (HIGHMIN - IRON_MIN);
1092 if (e >= GOLD_MIN) {
1094 gold = (80 * (e - GOLD_MIN + 1)) / (HIGHMIN - GOLD_MIN);
1096 gold = 100 - 20 * HIGHMIN / e;
1107 if (e >= URAN_MIN && e < HIGHMIN)
1108 uran = (120 * (e - URAN_MIN + 1)) / (HIGHMIN - URAN_MIN);
1115 add_resources(struct sctstr *sct)
1117 sct->sct_fertil = set_fert(sct->sct_elev);
1118 sct->sct_oil = set_oil(sct->sct_elev);
1119 sct->sct_min = set_iron(sct->sct_elev);
1120 sct->sct_gmin = set_gold(sct->sct_elev);
1121 sct->sct_uran = set_uran(sct->sct_elev);
1124 /****************************************************************************
1125 DESIGNATE THE SECTORS
1126 ****************************************************************************/
1134 for (y = 0; y < WORLD_Y; y++) {
1135 for (x = y % 2; x < WORLD_X; x += 2) {
1136 sct = getsectp(x, y);
1138 if (total < LANDMIN) {
1139 sct->sct_type = SCT_WATER;
1140 } else if (total < HILLMIN)
1141 sct->sct_type = SCT_RURAL;
1142 else if (total < PLATMIN)
1143 sct->sct_type = SCT_MOUNT;
1144 else if (total < HIGHMIN)
1145 sct->sct_type = SCT_RURAL;
1147 sct->sct_type = SCT_MOUNT;
1148 sct->sct_elev = total;
1149 sct->sct_newtype = sct->sct_type;
1150 sct->sct_dterr = own[sct->sct_x][y] + 1;
1156 for (c = 0; c < nc; ++c) {
1157 sct = getsectp(capx[c], capy[c]);
1158 sct->sct_type = SCT_AIRPT;
1159 sct->sct_newtype = SCT_AIRPT;
1161 set_coastal_flags();
1164 /****************************************************************************
1165 PRINT A PICTURE OF THE MAP TO YOUR SCREEN
1166 ****************************************************************************/
1173 for (sy = -WORLD_Y / 2; sy < WORLD_Y / 2; sy++) {
1178 for (sx = -WORLD_X / 2 + y % 2; sx < WORLD_X / 2; sx += 2) {
1180 if (own[x][y] == -1)
1183 printf("%c ", map_symbol(x, y));
1189 printf("\n\nEach continent is marked by a \"*\" on the map (to distinguish them from\n"
1190 "the islands). You can redesignate these airfields to wilderness sectors\n"
1191 "one at a time, each time you add a new country to the game.\n");
1195 map_symbol(int x, int y)
1199 for (c = 0; c < nc; ++c)
1200 if ((x == capx[c] && y == capy[c])
1201 || (x == new_x(capx[c] + 2) && y == capy[c]))
1202 return numletter[own[x][y] % 62];
1203 if ((elev[x][y] >= HILLMIN && elev[x][y] < PLATMIN)
1204 || elev[x][y] >= HIGHMIN)
1206 return own[x][y] >= nc ? '%' : '#';
1210 * Print a map to help visualize own[][].
1211 * This is for debugging.
1218 for (sy = -WORLD_Y / 2; sy < WORLD_Y / 2; sy++) {
1221 for (sx = -WORLD_X / 2; sx < WORLD_X / 2; sx++) {
1225 else if (own[x][y] == -1)
1228 putchar(numletter[own[x][y] % 62]);
1235 * Print a map to help visualize elev[][].
1236 * This is for debugging. It expects the terminal to understand
1237 * 24-bit color escape sequences \e[48;2;$red;$green;$blue;m.
1240 print_elev_map(void)
1242 int sx, sy, x, y, sat;
1244 for (sy = -WORLD_Y / 2; sy < WORLD_Y / 2; sy++) {
1247 for (sx = -WORLD_X / 2; sx < WORLD_X / 2; sx++) {
1251 else if (!elev[x][y])
1253 else if (elev[x][y] < 0) {
1254 sat = 256 + elev[x][y] * 2;
1255 printf("\033[48;2;%d;%d;%dm \033[0m", sat, sat, 255);
1256 } else if (elev[x][y] < HIGHMIN / 2) {
1257 sat = (HIGHMIN / 2 - elev[x][y]) * 4;
1258 printf("\033[48;2;%d;%d;%dm \033[0m", sat, 255, sat);
1259 } else if (elev[x][y] < HIGHMIN) {
1260 sat = 128 + (HIGHMIN - elev[x][y]) * 2;
1261 printf("\033[48;2;%d;%d;%dm \033[0m", sat, sat / 2, sat / 4);
1263 sat = 128 + (elev[x][y] - HIGHMIN) * 4 / 5;
1264 printf("\033[48;2;%d;%d;%dm^\033[0m", sat, sat, sat);
1271 /***************************************************************************
1272 WRITE A SCRIPT FOR PLACING CAPITALS
1273 ****************************************************************************/
1275 write_newcap_script(void)
1278 FILE *script = fopen(outfile, "w");
1281 printf("fairland: error, unable to write to %s.\n", outfile);
1285 for (c = 0; c < nc; ++c) {
1286 fprintf(script, "add %d %d %d p\n", c + 1, c + 1, c + 1);
1288 fprintf(script, "des %d,%d -\n", capx[c], capy[c]);
1289 fprintf(script, "newcap %d %d,%d\n", c + 1, capx[c], capy[c]);
1291 fprintf(script, "add %d visitor visitor v\n", c + 1);
1297 qprint(const char *const fmt, ...)
1303 vfprintf(stdout, fmt, ap);
1309 set_coastal_flags(void)
1314 qprint("setting coastal flags...\n");
1315 for (i = 0; i < nc; ++i) {
1316 for (j = 0; j < sc; j++) {
1317 sp = getsectp(sectx[i][j], secty[i][j]);
1318 sp->sct_coastal = sectc[i][j];
1321 for (i = nc; i < nc + ni; ++i) {
1322 for (j = 0; j < isecs[i]; j++) {
1323 sp = getsectp(sectx[i][j], secty[i][j]);
1324 sp->sct_coastal = sectc[i][j];