git.mutantstargoat.com Git - raydungeon/blob - src/options.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <string.h>
   4 #include <errno.h>
   5 #include "options.h"
   6 #include "game.h"
   7 #include "treestor.h"
   8
   9 #define DEF_XRES                1280
  10 #define DEF_YRES                800
  11 #define DEF_VSYNC               1
  12 #define DEF_VOL                 255
  13 #define DEF_MUS                 1
  14 #define DEF_FULLSCR             0
  15 #define DEF_INVMOUSEY   0
  16 #define DEF_MOUSE_SPEED 50
  17
  18
  19 struct options opt = {
  20         DEF_XRES, DEF_YRES,
  21         DEF_VSYNC,
  22         DEF_FULLSCR,
  23         DEF_VOL, DEF_VOL, DEF_VOL,
  24         DEF_MUS,
  25         DEF_INVMOUSEY,
  26         DEF_MOUSE_SPEED,
  27 };
  28
  29 int parse_options(int argc, char **argv)
  30 {
  31         int i;
  32         static const char *usage_fmt = "Usage: %s [options]\n"
  33                 "Options:\n"
  34                 " -screen <name>: select starting screen\n"
  35                 " -h,-help: print usage information and exit\n\n";
  36
  37         for(i=1; i<argc; i++) {
  38                 if(argv[i][0] == '-') {
  39                         if(strcmp(argv[i], "-scr") == 0 || strcmp(argv[i], "-screen") == 0) {
  40                                 if(!argv[++i]) {
  41                                         fprintf(stderr, "%s must be followed by a screen name\n", argv[i - 1]);
  42                                         return -1;
  43                                 }
  44                                 start_scr_name = argv[i];
  45
  46                         } else if(strcmp(argv[i], "-h") == 0 || strcmp(argv[i], "-help") == 0) {
  47                                 printf(usage_fmt, argv[0]);
  48                                 exit(0);
  49                         } else {
  50                                 fprintf(stderr, "invalid option: %s\n", argv[i]);
  51                                 return -1;
  52                         }
  53                 } else {
  54                         fprintf(stderr, "unexpected argument: %s\n", argv[i]);
  55                         return -1;
  56                 }
  57         }
  58
  59         return 0;
  60 }
  61
  62 int load_options(const char *fname)
  63 {
  64         struct ts_node *cfg;
  65
  66         if(!(cfg = ts_load(fname))) {
  67                 return -1;
  68         }
  69         printf("loaded config: %s\n", fname);
  70
  71         opt.xres = ts_lookup_int(cfg, "options.video.xres", DEF_XRES);
  72         opt.yres = ts_lookup_int(cfg, "options.video.yres", DEF_YRES);
  73         opt.vsync = ts_lookup_int(cfg, "options.video.vsync", DEF_VSYNC);
  74         opt.fullscreen = ts_lookup_int(cfg, "options.video.fullscreen", DEF_FULLSCR);
  75
  76         opt.vol_master = ts_lookup_int(cfg, "options.audio.volmaster", DEF_VOL);
  77         opt.vol_mus = ts_lookup_int(cfg, "options.audio.volmusic", DEF_VOL);
  78         opt.vol_sfx = ts_lookup_int(cfg, "options.audio.volsfx", DEF_VOL);
  79         opt.music = ts_lookup_int(cfg, "options.audio.music", DEF_MUS);
  80
  81         opt.inv_mouse_y = ts_lookup_int(cfg, "options.controls.invmousey", DEF_INVMOUSEY);
  82         opt.mouse_speed = ts_lookup_int(cfg, "options.controls.mousespeed", DEF_MOUSE_SPEED);
  83
  84         ts_free_tree(cfg);
  85         return 0;
  86 }
  87
  88 #define WROPT(lvl, fmt, val, defval) \
  89         do { \
  90                 int i; \
  91                 for(i=0; i<lvl; i++) fputc('\t', fp); \
  92                 if((val) == (defval)) { \
  93                         fprintf(fp, fmt "\t# default\n", val); \
  94                 } else { \
  95                         fprintf(fp, fmt "\n", val); \
  96                 } \
  97         } while(0)
  98
  99 int save_options(const char *fname)
 100 {
 101         FILE *fp;
 102
 103         printf("writing config: %s\n", fname);
 104
 105         if(!(fp = fopen(fname, "wb"))) {
 106                 fprintf(stderr, "failed to save options (%s): %s\n", fname, strerror(errno));
 107         }
 108         fprintf(fp, "options {\n");
 109         fprintf(fp, "\tvideo {\n");
 110         WROPT(2, "xres = %d", opt.xres, DEF_XRES);
 111         WROPT(2, "yres = %d", opt.yres, DEF_YRES);
 112         WROPT(2, "vsync = %d", opt.vsync, DEF_VSYNC);
 113         WROPT(2, "fullscreen = %d", opt.fullscreen, DEF_FULLSCR);
 114         fprintf(fp, "\t}\n");
 115
 116         fprintf(fp, "\taudio {\n");
 117         WROPT(2, "volmaster = %d", opt.vol_master, DEF_VOL);
 118         WROPT(2, "volmusic = %d", opt.vol_mus, DEF_VOL);
 119         WROPT(2, "volsfx = %d", opt.vol_sfx, DEF_VOL);
 120         WROPT(2, "music = %d", opt.music ? 1 : 0, DEF_MUS);
 121         fprintf(fp, "\t}\n");
 122
 123         fprintf(fp, "\tcontrols {\n");
 124         WROPT(2, "invmousey = %d", opt.inv_mouse_y, DEF_INVMOUSEY);
 125         WROPT(2, "mousespeed = %d", opt.mouse_speed, DEF_MOUSE_SPEED);
 126         fprintf(fp, "\t}\n");
 127
 128         fprintf(fp, "}\n");
 129         fprintf(fp, "# v" "i:ts=4 sts=4 sw=4 noexpandtab:\n");
 130
 131         fclose(fp);
 132         return 0;
 133 }