maps/Info/land.c

#include <stdio.h>
#include <stdlib.h>

#define MAX_SIZE    3000
#define MAX(x,y) ((x)>(y)?(x):(y))

#define BASE_ALT -100

/* make this a global to avoid stack overflow */
int altitude[MAX_SIZE][MAX_SIZE];

/* This function writes out the crossfire maps.  So shoot me for
 * using compiled in constants - I'm not going to use this so much
 * that I wanted to do anything too easy.
 */

#define MAP_FORMAT  "world_%03d_%03d"

/* Maps are square */

#define MAP_SIZE    50

/* There will be a total of 2500 maps (eek) - 50 in
 * each diretion.  STARTX and STARTY are where to start
 * numbering from.  I chose 100 for a few reasons - 1) it
 * gives room to the left and above to add some things (another
 * continent for that matter), and 2) since the format allows
 * for up to 1000 in each direction, this seemed reasonable.
 * Note - if you do the math, and have 1000 * 1000 maps, each
 * with 50*50 spaces, you have a total of 2.5 billion spaces.
 * So hopefully that should be large enough.
 */

#define STARTX  100
#define STARTY  100

typedef enum {
    None=0,
    DeepWater=1,
    MediumWater=2,
    ShallowWater=3,
    Swamp=4,
    DeepSwamp=5,
    Grass=6,
    Desert=7,
    Brush=8,
    EverGreens=9,
    Jungle=10,
    Tree1=11,
    Tree2=12,
    Woods1=13,
    Woods2=14,
    Woods3=15,
    Hills=16,
    HillsRocky=17,
    Steppe=17,
    Mountain=19,
    HighMountain=20,
    WasteLand=21
} Terrain_Types;

char *Terrain_Names[][2] = {
    /* these are the archetype names.  They are in the same order
     * as the Terrain_Types above.  Note many terrain types are not
     * included because handling them would be too difficult.
     */
    {"None",        "0, 0, 0 "},
    {"deep_sea",    "0 0 127 "},
    {"sea",         "0 0 192 "},
    {"shallow_sea", "0 0 255 "}, /* wading depth */
    {"swamp",       "12 161 64 "},
    {"deep_swamp",  "155 175 164 "},
    {"grass",       "0 255 0 "},
    {"desert",      "222 218 135 "},
    {"brush",       "1 144 1 "},
    {"evergreens",  "0 128 0 "},
    {"jungle_1",    "0 176 0 "},
    {"tree",        "4 133 01 "},
    {"evergreen",   "20 209 0 "},
    {"woods",       "4 115 01 "},
    {"woods_2",     "1 182 02 "},
    {"woods_3",     "4 153 02 "},
    {"hills",       "166 160 70 "},
    {"hills_rocky", "166 155 70 "},
    {"steppe",      "150 97 34 "},
    {"mountain",    "183 190 190 "},
    {"mountain2",   "191 196 185 "},
    {"wasteland",   "255 255 255 "},
};
 

void write_crossfire_maps(int mapx, int mapy)
{
    int x, y,n,q, nx, ny,r1,r2,ax=0,ay=0, j, k;
    char name[512];
    FILE    *fp;
    Terrain_Types *terrain;

    terrain = calloc(mapx * mapy * sizeof(Terrain_Types), sizeof(Terrain_Types));

    /* First fill in the water and the highest of peaks */
    for (x=0; x<mapx; x++) {
        for (y=0; y<mapy; y++) {
            if (altitude[y][x] < -5000) {
                terrain[x + y * mapx] = DeepWater;
            } else if (altitude[y][x] < -99) {
                terrain[x + y * mapx] = MediumWater;
            } else if (altitude[y][x] < 1) {
                terrain[x + y * mapx] = ShallowWater;
            } else if (altitude[y][x] >=12000) {
                /* Not really precisely wasteland, but wastelands are impassable */
                terrain[x + y * mapx] = WasteLand;
            }
        }
    }
    /* Basically, take a random bit and populate the area with terrain.
     * We do this so it won't be totally monolythic (have several forest types
     * for example), yet patches will be the same thing, eg, a stretch of
     * desert, which wouldn't work very well if we just chose randomly
     * for each space.
     */

    for (n=0; n<(mapx * mapy) / 100; n++) {
        do {
            x = random() % mapx;
            y = random() % mapy;
        } while ( terrain[x + y * mapx] == None);

        nx = x + 40;
        if (nx > mapx) nx=mapx;
        ny = y + 40;
        if (ny > mapy) ny = mapy;
        r1 = random();
        r2 = random();
        for (x = nx-40; x<nx; x++) {
            for (y=ny-40; y<ny; y++) {
                if (terrain[x + y * mapx] != None) continue;

                /* near the edges, don't always fill in so that hopefully something
                 * else will fill in and smooth these out some
                 */
                if  ( (x < (nx -30) || y < (ny - 30) || x > (nx -10) || y > (ny - 10)) &&
                     random() % 2) continue;

                if (altitude[y][x] < 10) {
                    terrain[x + y * mapx] = Swamp + (r1 % 2);
                }
                else if (altitude[y][x] < 1000) {
                    terrain[x + y * mapx] = Grass + (r1 % 3);
                } else if (altitude[y][x] < 3000) {
                    terrain[x + y * mapx] = EverGreens + (r1 % 9);
                } else if (altitude[y][x] < 5000) {
                    terrain[x + y * mapx] = Hills + (r2 % 3);
                } else if (altitude[y][x] < 9000) {
                    terrain[x + y * mapx] = Mountain;
                } else if (altitude[y][x] < 12000) {
                    terrain[x + y * mapx] = HighMountain;
                }
                else fprintf(stderr,"altitude %d did not get filled in?\n", altitude[y][x]);
            }
        }
    }
    /* Now just fill in the spaces randomly. */
    n=0;
    r1 = random();
    r2 = random();
    for (x=0; x<mapx; x++) {
        for (y=0; y<mapy; y++) {
            if (terrain[x + y * mapx] != None) continue;
            n++;
            if (altitude[y][x] < 10) {
                terrain[x + y * mapx] = Swamp + (r1 % 2);
            }
            if (altitude[y][x] < 1000) {
                terrain[x + y * mapx] = Grass + (r1 % 3);
            } else if (altitude[y][x] < 3000) {
                    terrain[x + y * mapx] = EverGreens + (r2 % 9);
            } else if (altitude[y][x] < 5000) {
                    terrain[x + y * mapx] = Hills + (r2 % 3);
            } else if (altitude[y][x] < 9000) {
                    terrain[x + y * mapx] = Mountain;
            } else if (altitude[y][x] < 12000) {
                    terrain[x + y * mapx] = HighMountain;
            }
        }
    }
    fprintf(stderr,"Filled in %d spaces\n",n);
    if ((mapx / MAP_SIZE) * MAP_SIZE != mapx ||
        (mapy / MAP_SIZE) * MAP_SIZE != mapy) {
        fprintf(stderr,"Warning - generated map does not evenly tile.\n");
    }
    for (nx= STARTX; nx<(STARTX + (mapx/ MAP_SIZE)); nx++) {
        for (ny= STARTY; ny<(STARTY + (mapy/ MAP_SIZE)); ny++) {
            ax = (nx - STARTX) * MAP_SIZE;
            ay = (ny - STARTY) * MAP_SIZE;

            sprintf(name,MAP_FORMAT,nx,ny);
            if ((fp=fopen(name, "w"))==NULL) {
                fprintf(stderr,"unable to open %s\n", name);
            }
            /* Write the header for the map */
            fprintf(fp,"arch map\n");
            fprintf(fp,"name %s\n", name);
            fprintf(fp,"width %d\n", MAP_SIZE);
            fprintf(fp,"height %d\n", MAP_SIZE);
            /* Not used right now, but useful to include */
            fprintf(fp,"outdoor 1\n", MAP_SIZE);

            /* don't do difficult, reset time, or enter coordinates */
            /* Set up the tile paths */
            if (ny != STARTY) {
                fprintf(fp,"tile_path_1 ");
                fprintf(fp,MAP_FORMAT,nx, ny-1);
                fprintf(fp,"\n");
            }
            if ((nx+1) < STARTX + (mapx/ MAP_SIZE)) {
                fprintf(fp,"tile_path_2 ");
                fprintf(fp,MAP_FORMAT,nx+1, ny);
                fprintf(fp,"\n");
            }
            if ((ny+1) < STARTY + (mapy/ MAP_SIZE)) {
                fprintf(fp,"tile_path_3 ");
                fprintf(fp,MAP_FORMAT,nx, ny+1);
                fprintf(fp,"\n");
            }
            if (nx != STARTX) {
                fprintf(fp,"tile_path_4 ");
                fprintf(fp,MAP_FORMAT,nx-1, ny);
                fprintf(fp,"\n");
            }
            fprintf(fp,"end\n");
            for (x = 0; x<50; x++) {
                for (y = 0; y < 50; y++) {
                    q = terrain[x + ax  + (y + ay)* mapx];
                    fprintf(fp, "arch %s\n",Terrain_Names[q][0]);
                    fprintf(fp,"x %d\n", x);
                    fprintf(fp,"y %d\n", y);
                    q = altitude[y + ay ][x + ax];
                    if (q< -32000) q = -32000;
                    if (q > 32000) q = 32000;
                    fprintf(fp,"elevation %d\n", q);
                    fprintf(fp,"end\n");
                }
            }
            fclose(fp);
        }
    }

    fp = fopen("cmap", "w");
    fprintf(fp, "P3 %d %d 255\n", mapy, mapx);
    for (y=0; y < mapy; y++) {
            for (x=0; x < mapx; x++) {
                fprintf(fp, Terrain_Names[terrain[x + y * mapx]][1]);
            }
        fprintf(fp, "\n");
        }
    exit(0);
}


main(int argc, char *argv)
{
    int x, y, max_x=500, max_y=500, seed, land=300000, npasses=40, newalt, wpasses=50, water=50000;
    int n, i, j, k, l, z, w, r, a, write_maps=0;
    FILE *fp, *lp;
    int junk;
    char c;
    extern char *optarg;

    seed = time(NULL);
    while ((c = getopt(argc, argv,"x:y:s:l:n:w:p:m"))!=-1) {
        switch (c) {
            case 'l':
                land = atoi(optarg);
                if (land < 11 ) {
                    fprintf(stderr,"-l must be at least 11\n");
                    exit(1);
                }
                break;

            case 'w':
                water = atoi(optarg);
                if (water < 1 ) {
                    fprintf(stderr,"-w must be at least 1\n");
                    exit(1);
                }
                break;

            case 'p':
                wpasses = atoi(optarg);
                if (wpasses < 1 ) {
                    fprintf(stderr,"-w must be at least 1\n");
                    exit(1);
                }
                break;

            case 'n':
                npasses = atoi(optarg);
                if (npasses < 10 ) {
                    fprintf(stderr,"-n must be at least 10\n");
                    exit(1);
                }
                break;

            case 'x':
                max_x = atoi(optarg);
                break;

            case 'y':
                max_y = atoi(optarg);
                break;

            case 's':
                seed = atoi(optarg);
                break;

            case 'm':
                write_maps=1;
                break;
        }
    }
    if (max_x > MAX_SIZE || max_y > MAX_SIZE) {
        fprintf(stderr,"Max X and Y size is %d\n", MAX_SIZE);
        exit(1);
    }

    fprintf(stderr,"Making %d X %d map, seed %d, land %d, passes = %d\n", max_x, max_y, seed, land, npasses);
    fprintf(stderr,"wpasses =%d, water=%d\n", wpasses, water);
    fprintf(stderr,"-x %d -y %d -s %d -p %d -n %d -w %d -l %d\n",
            max_x, max_y, seed, wpasses, npasses, water, land);

    srandom(seed);

    for (x=20; x < max_x-20;  x++)
        for (y=20; y < max_y-20; y++)
            altitude[x][y] = BASE_ALT;

    for (x=0; x<max_x; x++) {
        for (y=0; y<20; y++) {
            altitude[x][y] = (y -20 ) * 100;
            altitude[x][max_y - y] =  (y -20 ) * 100;
        }
    }

    for (y=10; y<max_y-10; y++) {
        for (x=0; x<20; x++) {
            altitude[x][y] = (x - 20) * 100;
            altitude[max_x - x][y] =  (x - 20) * 100;
        }
    }
  
    /* This basically produces areas of high varience (eg, islands, peaks, valleys, etc) */

    for (l=0; l<npasses; l++) {
        x = random()%max_x;
        y = random()%max_y;
        /* Weigh our selected starting position a little more towards the center
         * so the continent is more in the center
         */
        if (random() % 2) {
            x += random()%max_x;
            y += random()%max_y;
            x /=2;
            y /=2;
        }
        n = random()%500+800;

        /* For some portion, try to find a pixel we have yet to modify */
        if (l> (npasses * 15) / 20) {
            int tries=0;
            while (altitude[x][y] == BASE_ALT) {
                x = random()%max_x;
                y = random()%max_y;
                if (random() % 2) {
                    x += random()%max_x;
                    y += random()%max_y;
                    x /=2;
                    y /=2;
                }
                tries++;
                if (tries > 50) {
                    fprintf(stderr,"did not find free space within %d tries\n", tries);
                    break;
                }
            }

        }

        for (k=1; k< land ; k++) {
            r = random()%4;
            switch (r) {
                case 0: if (x<max_x-1) x++; else x -= random() % (max_x/2); break;
                case 1: if (y<max_y-1) y++; else y -= random() % (max_y/2);  break;
                case 2: if (x) x--; else x+= random() % (max_x/2); break;
                case 3: if (y) y--; else y+= random() % (max_y/2); break;
            }
            altitude[x][y] += n;
            if (random()%k < 100)
                n -= 1;
        }
    }

    /* Make lakes and ocean trenches.
     * General note - it works better to have more passes, but each
     * pass doing less working - this results in more consistent lakes
     * and ocen trenching.
     */
    for (l=0; l<wpasses; l++) {
        /* for a small portion, we lower the area we make */
            n = random()%1500-2000;

            x = random()% max_x;
            y = random()% max_y;

            while (altitude[x][y] > BASE_ALT || altitude[x][y]<-7000) {
                x = random()% max_x;
                y = random()% max_y;
            }
            for (k=1; k< water ; k++) {
                r = random()%4;
                switch (r) {
                    case 0: if (x<max_x-1) x++;  break;
                    case 1: if (y<max_y-1) y++;   break;
                    case 2: if (x) x--;  break;
                    case 3: if (y) y--;  break;
                }
                altitude[x][y] += n;
                if (random()%k < 100)
                    n += 1;     /*less dramatic as things go on */
        }
    }


    /* This block seems to average out the spaces somewhat to prevent
     * cliffs and the like.
     */
#define NUM_PASSES 3
    r = 10;
    for (k=0; k<NUM_PASSES; k++) {
        for (x=2; x<max_x-2; x++) {
            for (y=2; y<max_y - 2; y++) {
                newalt = (altitude[x][y] * r + altitude[x-1][y] +
                        altitude[x][y-1] + altitude[x-1][y-1] +
                        altitude[x+1][y] + altitude[x][y+1] +
                        altitude[x+1][y+1] + altitude[x+1][y-1] +
                        altitude[x-1][y+1]) / (r+8);
                if (altitude[x][y] < 10 || altitude[x][y] > newalt) altitude[x][y] = newalt;
            }
        }
        for (x=max_x-2; x>2; x--) {
            for (y=max_y-2; y>2; y--) {
                newalt = (altitude[x][y] * r + altitude[x-1][y] +
                        altitude[x][y-1] + altitude[x-1][y-1] +
                        altitude[x+1][y] + altitude[x][y+1] +
                        altitude[x+1][y+1] + altitude[x+1][y-1] +
                        altitude[x-1][y+1]) / (r+8);
                if (altitude[x][y] < 10 || altitude[x][y] > newalt) altitude[x][y] = newalt;
            }
        }
    }

/* Make this 100 so that we eliminate/reduce the lakiness of
 * the map that is otherwise generated - otherwise, the map
 * looks like an archipelligo
 */
#define AVG_PT  -10

    /* water - does the same as above, but try to more equally balnace the spaces*/
    r = 1;
    for (k=0; k<40; k++) {
        for (x=2; x<max_x-2; x++) {
            for (y=2; y<max_y -2; y++) {
                if (altitude[x][y] < AVG_PT)
                    altitude[x][y] = (altitude[x][y] * r + altitude[x-1][y] +
                        altitude[x][y-1] + altitude[x-1][y-1] +
                        altitude[x+1][y] + altitude[x][y+1] +
                        altitude[x+1][y+1] + altitude[x+1][y-1] +
                        altitude[x-1][y+1]) / (r+8);
            }
        }
        for (x=max_x-2; x>2; x--) {
            for (y=max_y-2; y>2; y--) {
                if (altitude[x][y] < AVG_PT)
                    altitude[x][y] = (altitude[x][y] * r + altitude[x-1][y] +
                        altitude[x][y-1] + altitude[x-1][y-1] +
                        altitude[x+1][y] + altitude[x][y+1] +
                        altitude[x+1][y+1] + altitude[x+1][y-1] +
                        altitude[x-1][y+1]) / (r+8);
            }
        }
    }
    if (write_maps)
        write_crossfire_maps(max_x, max_y);

    /* Now write the data out */

        fp = fopen("lmap", "w");
        lp = fopen("pmap", "w");
        fprintf(fp, "P3 %d %d 255\n", max_y, max_x);
        for (j=0; j < max_x; j++) {
            for (k=0; k < max_y; k++) {
                junk = altitude[j][k];
                fprintf(lp, "%d ", altitude[j][k]);
                if (junk < -5000)
                    fprintf(fp, "0 0 127 ");
                /* Shallow water should really be just at the coastal
                 * area, so put a big gap between shallow and deep.
                 * this also evens out the occurance of the different types
                 * to be more equal
                 */
                else if (junk < -99)
                    fprintf(fp, "0 0 192 ");
                else if (junk < 1)
                    fprintf(fp, "0 0 255 ");
                else if (junk < 1000)
                    fprintf(fp, "0 240 0 ");
                else if (junk < 2000)
                    fprintf(fp, "0 220 0 ");
                else if (junk < 3000)
                    fprintf(fp, "0 200 0 ");
                else if (junk < 4000)
                    fprintf(fp, "0 180 0 ");
                else if (junk < 5000)
                    fprintf(fp, "0 160 0 ");
                else if (junk < 6000)
                    fprintf(fp, "255 130 71 ");
                else if (junk < 8000)
                    fprintf(fp, "238 121 66 ");
                else if (junk < 10000)
                    fprintf(fp, "205 104  57  ");
                else if (junk < 12000)
                    fprintf(fp, "139  71  38  ");
                else
                    fprintf(fp, "255 255 255 ");
                }
        fprintf(fp, "\n");
        }
    exit(0);
}               
Revision:	1.1.1.1 (vendor branch)
Committed:	Sat Feb 4 23:56:12 2006 UTC (18 years, 10 months ago) by root
Content type:	text/plain
Branch:	UPSTREAM, MAIN
CVS Tags:	post_fixaltar, last_stable, post_fixaltar2, rel-2_82, rel-2_81, rel-2_80, pre_coinconvert, UPSTREAM_2006_03_15, rel-3_0, rel-2_6, rel-2_7, rel-2_4, rel-2_5, rel-2_2, rel-2_0, rel-2_1, rel-2_72, rel-2_73, rel-2_71, rel-2_76, rel-2_77, rel-2_74, rel-2_75, rel-2_54, rel-2_55, rel-2_56, rel-2_79, UPSTREAM_2006_02_01, rel-2_53, pre_material_cfarch_normalize_run, rel-2_32, pre_fixconverter, post_coinconvert, pre_fixaltar2, pre_map_rename, UPSTREAM_2006_02_22, rel-2_90, rel-2_92, rel-2_93, rel-2_78, post_fixconverter, pre_fixaltar, rel-2_61, rel-2_43, rel-2_42, rel-2_41, HEAD
Changes since 1.1:	+0 -0 lines
Log Message:	Initial Import
#	User	Rev	Content
1	root	1.1	#include <stdio.h>
2			#include <stdlib.h>
3
4			#define MAX_SIZE 3000
5			#define MAX(x,y) ((x)>(y)?(x):(y))
6
7			#define BASE_ALT -100
8
9			/* make this a global to avoid stack overflow */
10			int altitude[MAX_SIZE][MAX_SIZE];
11
12			/* This function writes out the crossfire maps. So shoot me for
13			* using compiled in constants - I'm not going to use this so much
14			* that I wanted to do anything too easy.
15			*/
16
17			#define MAP_FORMAT "world_%03d_%03d"
18
19			/* Maps are square */
20
21			#define MAP_SIZE 50
22
23			/* There will be a total of 2500 maps (eek) - 50 in
24			* each diretion. STARTX and STARTY are where to start
25			* numbering from. I chose 100 for a few reasons - 1) it
26			* gives room to the left and above to add some things (another
27			* continent for that matter), and 2) since the format allows
28			* for up to 1000 in each direction, this seemed reasonable.
29			* Note - if you do the math, and have 1000 * 1000 maps, each
30			* with 50*50 spaces, you have a total of 2.5 billion spaces.
31			* So hopefully that should be large enough.
32			*/
33
34			#define STARTX 100
35			#define STARTY 100
36
37			typedef enum {
38			None=0,
39			DeepWater=1,
40			MediumWater=2,
41			ShallowWater=3,
42			Swamp=4,
43			DeepSwamp=5,
44			Grass=6,
45			Desert=7,
46			Brush=8,
47			EverGreens=9,
48			Jungle=10,
49			Tree1=11,
50			Tree2=12,
51			Woods1=13,
52			Woods2=14,
53			Woods3=15,
54			Hills=16,
55			HillsRocky=17,
56			Steppe=17,
57			Mountain=19,
58			HighMountain=20,
59			WasteLand=21
60			} Terrain_Types;
61
62			char *Terrain_Names[][2] = {
63			/* these are the archetype names. They are in the same order
64			* as the Terrain_Types above. Note many terrain types are not
65			* included because handling them would be too difficult.
66			*/
67			{"None", "0, 0, 0 "},
68			{"deep_sea", "0 0 127 "},
69			{"sea", "0 0 192 "},
70			{"shallow_sea", "0 0 255 "}, /* wading depth */
71			{"swamp", "12 161 64 "},
72			{"deep_swamp", "155 175 164 "},
73			{"grass", "0 255 0 "},
74			{"desert", "222 218 135 "},
75			{"brush", "1 144 1 "},
76			{"evergreens", "0 128 0 "},
77			{"jungle_1", "0 176 0 "},
78			{"tree", "4 133 01 "},
79			{"evergreen", "20 209 0 "},
80			{"woods", "4 115 01 "},
81			{"woods_2", "1 182 02 "},
82			{"woods_3", "4 153 02 "},
83			{"hills", "166 160 70 "},
84			{"hills_rocky", "166 155 70 "},
85			{"steppe", "150 97 34 "},
86			{"mountain", "183 190 190 "},
87			{"mountain2", "191 196 185 "},
88			{"wasteland", "255 255 255 "},
89			};
90
91
92
93			void write_crossfire_maps(int mapx, int mapy)
94			{
95			int x, y,n,q, nx, ny,r1,r2,ax=0,ay=0, j, k;
96			char name[512];
97			FILE *fp;
98			Terrain_Types *terrain;
99
100			terrain = calloc(mapx * mapy * sizeof(Terrain_Types), sizeof(Terrain_Types));
101
102			/* First fill in the water and the highest of peaks */
103			for (x=0; x<mapx; x++) {
104			for (y=0; y<mapy; y++) {
105			if (altitude[y][x] < -5000) {
106			terrain[x + y * mapx] = DeepWater;
107			} else if (altitude[y][x] < -99) {
108			terrain[x + y * mapx] = MediumWater;
109			} else if (altitude[y][x] < 1) {
110			terrain[x + y * mapx] = ShallowWater;
111			} else if (altitude[y][x] >=12000) {
112			/* Not really precisely wasteland, but wastelands are impassable */
113			terrain[x + y * mapx] = WasteLand;
114			}
115			}
116			}
117			/* Basically, take a random bit and populate the area with terrain.
118			* We do this so it won't be totally monolythic (have several forest types
119			* for example), yet patches will be the same thing, eg, a stretch of
120			* desert, which wouldn't work very well if we just chose randomly
121			* for each space.
122			*/
123
124			for (n=0; n<(mapx * mapy) / 100; n++) {
125			do {
126			x = random() % mapx;
127			y = random() % mapy;
128			} while ( terrain[x + y * mapx] == None);
129
130			nx = x + 40;
131			if (nx > mapx) nx=mapx;
132			ny = y + 40;
133			if (ny > mapy) ny = mapy;
134			r1 = random();
135			r2 = random();
136			for (x = nx-40; x<nx; x++) {
137			for (y=ny-40; y<ny; y++) {
138			if (terrain[x + y * mapx] != None) continue;
139
140			/* near the edges, don't always fill in so that hopefully something
141			* else will fill in and smooth these out some
142			*/
143			if ( (x < (nx -30) \|\| y < (ny - 30) \|\| x > (nx -10) \|\| y > (ny - 10)) &&
144			random() % 2) continue;
145
146			if (altitude[y][x] < 10) {
147			terrain[x + y * mapx] = Swamp + (r1 % 2);
148			}
149			else if (altitude[y][x] < 1000) {
150			terrain[x + y * mapx] = Grass + (r1 % 3);
151			} else if (altitude[y][x] < 3000) {
152			terrain[x + y * mapx] = EverGreens + (r1 % 9);
153			} else if (altitude[y][x] < 5000) {
154			terrain[x + y * mapx] = Hills + (r2 % 3);
155			} else if (altitude[y][x] < 9000) {
156			terrain[x + y * mapx] = Mountain;
157			} else if (altitude[y][x] < 12000) {
158			terrain[x + y * mapx] = HighMountain;
159			}
160			else fprintf(stderr,"altitude %d did not get filled in?\n", altitude[y][x]);
161			}
162			}
163			}
164			/* Now just fill in the spaces randomly. */
165			n=0;
166			r1 = random();
167			r2 = random();
168			for (x=0; x<mapx; x++) {
169			for (y=0; y<mapy; y++) {
170			if (terrain[x + y * mapx] != None) continue;
171			n++;
172			if (altitude[y][x] < 10) {
173			terrain[x + y * mapx] = Swamp + (r1 % 2);
174			}
175			if (altitude[y][x] < 1000) {
176			terrain[x + y * mapx] = Grass + (r1 % 3);
177			} else if (altitude[y][x] < 3000) {
178			terrain[x + y * mapx] = EverGreens + (r2 % 9);
179			} else if (altitude[y][x] < 5000) {
180			terrain[x + y * mapx] = Hills + (r2 % 3);
181			} else if (altitude[y][x] < 9000) {
182			terrain[x + y * mapx] = Mountain;
183			} else if (altitude[y][x] < 12000) {
184			terrain[x + y * mapx] = HighMountain;
185			}
186			}
187			}
188			fprintf(stderr,"Filled in %d spaces\n",n);
189			if ((mapx / MAP_SIZE) * MAP_SIZE != mapx \|\|
190			(mapy / MAP_SIZE) * MAP_SIZE != mapy) {
191			fprintf(stderr,"Warning - generated map does not evenly tile.\n");
192			}
193			for (nx= STARTX; nx<(STARTX + (mapx/ MAP_SIZE)); nx++) {
194			for (ny= STARTY; ny<(STARTY + (mapy/ MAP_SIZE)); ny++) {
195			ax = (nx - STARTX) * MAP_SIZE;
196			ay = (ny - STARTY) * MAP_SIZE;
197
198			sprintf(name,MAP_FORMAT,nx,ny);
199			if ((fp=fopen(name, "w"))==NULL) {
200			fprintf(stderr,"unable to open %s\n", name);
201			}
202			/* Write the header for the map */
203			fprintf(fp,"arch map\n");
204			fprintf(fp,"name %s\n", name);
205			fprintf(fp,"width %d\n", MAP_SIZE);
206			fprintf(fp,"height %d\n", MAP_SIZE);
207			/* Not used right now, but useful to include */
208			fprintf(fp,"outdoor 1\n", MAP_SIZE);
209
210			/* don't do difficult, reset time, or enter coordinates */
211			/* Set up the tile paths */
212			if (ny != STARTY) {
213			fprintf(fp,"tile_path_1 ");
214			fprintf(fp,MAP_FORMAT,nx, ny-1);
215			fprintf(fp,"\n");
216			}
217			if ((nx+1) < STARTX + (mapx/ MAP_SIZE)) {
218			fprintf(fp,"tile_path_2 ");
219			fprintf(fp,MAP_FORMAT,nx+1, ny);
220			fprintf(fp,"\n");
221			}
222			if ((ny+1) < STARTY + (mapy/ MAP_SIZE)) {
223			fprintf(fp,"tile_path_3 ");
224			fprintf(fp,MAP_FORMAT,nx, ny+1);
225			fprintf(fp,"\n");
226			}
227			if (nx != STARTX) {
228			fprintf(fp,"tile_path_4 ");
229			fprintf(fp,MAP_FORMAT,nx-1, ny);
230			fprintf(fp,"\n");
231			}
232			fprintf(fp,"end\n");
233			for (x = 0; x<50; x++) {
234			for (y = 0; y < 50; y++) {
235			q = terrain[x + ax + (y + ay)* mapx];
236			fprintf(fp, "arch %s\n",Terrain_Names[q][0]);
237			fprintf(fp,"x %d\n", x);
238			fprintf(fp,"y %d\n", y);
239			q = altitude[y + ay ][x + ax];
240			if (q< -32000) q = -32000;
241			if (q > 32000) q = 32000;
242			fprintf(fp,"elevation %d\n", q);
243			fprintf(fp,"end\n");
244			}
245			}
246			fclose(fp);
247			}
248			}
249
250			fp = fopen("cmap", "w");
251			fprintf(fp, "P3 %d %d 255\n", mapy, mapx);
252			for (y=0; y < mapy; y++) {
253			for (x=0; x < mapx; x++) {
254			fprintf(fp, Terrain_Names[terrain[x + y * mapx]][1]);
255			}
256			fprintf(fp, "\n");
257			}
258			exit(0);
259			}
260
261
262
263			main(int argc, char *argv)
264			{
265			int x, y, max_x=500, max_y=500, seed, land=300000, npasses=40, newalt, wpasses=50, water=50000;
266			int n, i, j, k, l, z, w, r, a, write_maps=0;
267			FILE fp, lp;
268			int junk;
269			char c;
270			extern char *optarg;
271
272			seed = time(NULL);
273			while ((c = getopt(argc, argv,"x:y:s:l:n:w:p:m"))!=-1) {
274			switch (c) {
275			case 'l':
276			land = atoi(optarg);
277			if (land < 11 ) {
278			fprintf(stderr,"-l must be at least 11\n");
279			exit(1);
280			}
281			break;
282
283			case 'w':
284			water = atoi(optarg);
285			if (water < 1 ) {
286			fprintf(stderr,"-w must be at least 1\n");
287			exit(1);
288			}
289			break;
290
291			case 'p':
292			wpasses = atoi(optarg);
293			if (wpasses < 1 ) {
294			fprintf(stderr,"-w must be at least 1\n");
295			exit(1);
296			}
297			break;
298
299			case 'n':
300			npasses = atoi(optarg);
301			if (npasses < 10 ) {
302			fprintf(stderr,"-n must be at least 10\n");
303			exit(1);
304			}
305			break;
306
307			case 'x':
308			max_x = atoi(optarg);
309			break;
310
311			case 'y':
312			max_y = atoi(optarg);
313			break;
314
315			case 's':
316			seed = atoi(optarg);
317			break;
318
319			case 'm':
320			write_maps=1;
321			break;
322			}
323			}
324			if (max_x > MAX_SIZE \|\| max_y > MAX_SIZE) {
325			fprintf(stderr,"Max X and Y size is %d\n", MAX_SIZE);
326			exit(1);
327			}
328
329			fprintf(stderr,"Making %d X %d map, seed %d, land %d, passes = %d\n", max_x, max_y, seed, land, npasses);
330			fprintf(stderr,"wpasses =%d, water=%d\n", wpasses, water);
331			fprintf(stderr,"-x %d -y %d -s %d -p %d -n %d -w %d -l %d\n",
332			max_x, max_y, seed, wpasses, npasses, water, land);
333
334			srandom(seed);
335
336			for (x=20; x < max_x-20; x++)
337			for (y=20; y < max_y-20; y++)
338			altitude[x][y] = BASE_ALT;
339
340			for (x=0; x<max_x; x++) {
341			for (y=0; y<20; y++) {
342			altitude[x][y] = (y -20 ) * 100;
343			altitude[x][max_y - y] = (y -20 ) * 100;
344			}
345			}
346
347			for (y=10; y<max_y-10; y++) {
348			for (x=0; x<20; x++) {
349			altitude[x][y] = (x - 20) * 100;
350			altitude[max_x - x][y] = (x - 20) * 100;
351			}
352			}
353
354			/* This basically produces areas of high varience (eg, islands, peaks, valleys, etc) */
355
356			for (l=0; l<npasses; l++) {
357			x = random()%max_x;
358			y = random()%max_y;
359			/* Weigh our selected starting position a little more towards the center
360			* so the continent is more in the center
361			*/
362			if (random() % 2) {
363			x += random()%max_x;
364			y += random()%max_y;
365			x /=2;
366			y /=2;
367			}
368			n = random()%500+800;
369
370			/* For some portion, try to find a pixel we have yet to modify */
371			if (l> (npasses * 15) / 20) {
372			int tries=0;
373			while (altitude[x][y] == BASE_ALT) {
374			x = random()%max_x;
375			y = random()%max_y;
376			if (random() % 2) {
377			x += random()%max_x;
378			y += random()%max_y;
379			x /=2;
380			y /=2;
381			}
382			tries++;
383			if (tries > 50) {
384			fprintf(stderr,"did not find free space within %d tries\n", tries);
385			break;
386			}
387			}
388
389			}
390
391			for (k=1; k< land ; k++) {
392			r = random()%4;
393			switch (r) {
394			case 0: if (x<max_x-1) x++; else x -= random() % (max_x/2); break;
395			case 1: if (y<max_y-1) y++; else y -= random() % (max_y/2); break;
396			case 2: if (x) x--; else x+= random() % (max_x/2); break;
397			case 3: if (y) y--; else y+= random() % (max_y/2); break;
398			}
399			altitude[x][y] += n;
400			if (random()%k < 100)
401			n -= 1;
402			}
403			}
404
405			/* Make lakes and ocean trenches.
406			* General note - it works better to have more passes, but each
407			* pass doing less working - this results in more consistent lakes
408			* and ocen trenching.
409			*/
410			for (l=0; l<wpasses; l++) {
411			/* for a small portion, we lower the area we make */
412			n = random()%1500-2000;
413
414			x = random()% max_x;
415			y = random()% max_y;
416
417			while (altitude[x][y] > BASE_ALT \|\| altitude[x][y]<-7000) {
418			x = random()% max_x;
419			y = random()% max_y;
420			}
421			for (k=1; k< water ; k++) {
422			r = random()%4;
423			switch (r) {
424			case 0: if (x<max_x-1) x++; break;
425			case 1: if (y<max_y-1) y++; break;
426			case 2: if (x) x--; break;
427			case 3: if (y) y--; break;
428			}
429			altitude[x][y] += n;
430			if (random()%k < 100)
431			n += 1; /less dramatic as things go on /
432			}
433			}
434
435
436			/* This block seems to average out the spaces somewhat to prevent
437			* cliffs and the like.
438			*/
439			#define NUM_PASSES 3
440			r = 10;
441			for (k=0; k<NUM_PASSES; k++) {
442			for (x=2; x<max_x-2; x++) {
443			for (y=2; y<max_y - 2; y++) {
444			newalt = (altitude[x][y] * r + altitude[x-1][y] +
445			altitude[x][y-1] + altitude[x-1][y-1] +
446			altitude[x+1][y] + altitude[x][y+1] +
447			altitude[x+1][y+1] + altitude[x+1][y-1] +
448			altitude[x-1][y+1]) / (r+8);
449			if (altitude[x][y] < 10 \|\| altitude[x][y] > newalt) altitude[x][y] = newalt;
450			}
451			}
452			for (x=max_x-2; x>2; x--) {
453			for (y=max_y-2; y>2; y--) {
454			newalt = (altitude[x][y] * r + altitude[x-1][y] +
455			altitude[x][y-1] + altitude[x-1][y-1] +
456			altitude[x+1][y] + altitude[x][y+1] +
457			altitude[x+1][y+1] + altitude[x+1][y-1] +
458			altitude[x-1][y+1]) / (r+8);
459			if (altitude[x][y] < 10 \|\| altitude[x][y] > newalt) altitude[x][y] = newalt;
460			}
461			}
462			}
463
464			/* Make this 100 so that we eliminate/reduce the lakiness of
465			* the map that is otherwise generated - otherwise, the map
466			* looks like an archipelligo
467			*/
468			#define AVG_PT -10
469
470			/* water - does the same as above, but try to more equally balnace the spaces*/
471			r = 1;
472			for (k=0; k<40; k++) {
473			for (x=2; x<max_x-2; x++) {
474			for (y=2; y<max_y -2; y++) {
475			if (altitude[x][y] < AVG_PT)
476			altitude[x][y] = (altitude[x][y] * r + altitude[x-1][y] +
477			altitude[x][y-1] + altitude[x-1][y-1] +
478			altitude[x+1][y] + altitude[x][y+1] +
479			altitude[x+1][y+1] + altitude[x+1][y-1] +
480			altitude[x-1][y+1]) / (r+8);
481			}
482			}
483			for (x=max_x-2; x>2; x--) {
484			for (y=max_y-2; y>2; y--) {
485			if (altitude[x][y] < AVG_PT)
486			altitude[x][y] = (altitude[x][y] * r + altitude[x-1][y] +
487			altitude[x][y-1] + altitude[x-1][y-1] +
488			altitude[x+1][y] + altitude[x][y+1] +
489			altitude[x+1][y+1] + altitude[x+1][y-1] +
490			altitude[x-1][y+1]) / (r+8);
491			}
492			}
493			}
494			if (write_maps)
495			write_crossfire_maps(max_x, max_y);
496
497			/* Now write the data out */
498
499			fp = fopen("lmap", "w");
500			lp = fopen("pmap", "w");
501			fprintf(fp, "P3 %d %d 255\n", max_y, max_x);
502			for (j=0; j < max_x; j++) {
503			for (k=0; k < max_y; k++) {
504			junk = altitude[j][k];
505			fprintf(lp, "%d ", altitude[j][k]);
506			if (junk < -5000)
507			fprintf(fp, "0 0 127 ");
508			/* Shallow water should really be just at the coastal
509			* area, so put a big gap between shallow and deep.
510			* this also evens out the occurance of the different types
511			* to be more equal
512			*/
513			else if (junk < -99)
514			fprintf(fp, "0 0 192 ");
515			else if (junk < 1)
516			fprintf(fp, "0 0 255 ");
517			else if (junk < 1000)
518			fprintf(fp, "0 240 0 ");
519			else if (junk < 2000)
520			fprintf(fp, "0 220 0 ");
521			else if (junk < 3000)
522			fprintf(fp, "0 200 0 ");
523			else if (junk < 4000)
524			fprintf(fp, "0 180 0 ");
525			else if (junk < 5000)
526			fprintf(fp, "0 160 0 ");
527			else if (junk < 6000)
528			fprintf(fp, "255 130 71 ");
529			else if (junk < 8000)
530			fprintf(fp, "238 121 66 ");
531			else if (junk < 10000)
532			fprintf(fp, "205 104 57 ");
533			else if (junk < 12000)
534			fprintf(fp, "139 71 38 ");
535			else
536			fprintf(fp, "255 255 255 ");
537			}
538			fprintf(fp, "\n");
539			}
540			exit(0);
541			}