added scr_lvled, a bunch of libraries, and improved framework code

[raydungeon] / src / options.c

diff --git a/src/options.c b/src/options.c
new file mode 100644 (file)
index 0000000..34dee8f
--- /dev/null
+++ b/src/options.c
@@ -0,0 +1,130 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include "options.h"
+#include "treestor.h"
+
+#define DEF_XRES               1280
+#define DEF_YRES               800
+#define DEF_VSYNC              1
+#define DEF_VOL                        255
+#define DEF_MUS                        1
+#define DEF_FULLSCR            0
+#define DEF_INVMOUSEY  0
+#define DEF_MOUSE_SPEED        50
+
+
+struct options opt = {
+       DEF_XRES, DEF_YRES,
+       DEF_VSYNC,
+       DEF_FULLSCR,
+       DEF_VOL, DEF_VOL, DEF_VOL,
+       DEF_MUS,
+       DEF_INVMOUSEY,
+       DEF_MOUSE_SPEED,
+};
+
+int parse_options(int argc, char **argv)
+{
+       int i;
+       static const char *usage_fmt = "Usage: %s [options]\n"
+               "Options:\n"
+               " -screen <name>: select starting screen\n"
+               " -h,-help: print usage information and exit\n\n";
+
+       for(i=1; i<argc; i++) {
+               if(argv[i][0] == '-') {
+                       if(strcmp(argv[i], "-scr") == 0 || strcmp(argv[i], "-screen") == 0) {
+                               if(!argv[++i]) {
+                                       fprintf(stderr, "%s must be followed by a screen name\n", argv[i - 1]);
+                                       return -1;
+                               }
+                       } else if(strcmp(argv[i], "-h") == 0 || strcmp(argv[i], "-help") == 0) {
+                               printf(usage_fmt, argv[0]);
+                               exit(0);
+                       } else {
+                               fprintf(stderr, "invalid option: %s\n", argv[i]);
+                               return -1;
+                       }
+               } else {
+                       fprintf(stderr, "unexpected argument: %s\n", argv[i]);
+                       return -1;
+               }
+       }
+
+       return 0;
+}
+
+int load_options(const char *fname)
+{
+       struct ts_node *cfg;
+
+       if(!(cfg = ts_load(fname))) {
+               return -1;
+       }
+       printf("loaded config: %s\n", fname);
+
+       opt.xres = ts_lookup_int(cfg, "options.video.xres", DEF_XRES);
+       opt.yres = ts_lookup_int(cfg, "options.video.yres", DEF_YRES);
+       opt.vsync = ts_lookup_int(cfg, "options.video.vsync", DEF_VSYNC);
+       opt.fullscreen = ts_lookup_int(cfg, "options.video.fullscreen", DEF_FULLSCR);
+
+       opt.vol_master = ts_lookup_int(cfg, "options.audio.volmaster", DEF_VOL);
+       opt.vol_mus = ts_lookup_int(cfg, "options.audio.volmusic", DEF_VOL);
+       opt.vol_sfx = ts_lookup_int(cfg, "options.audio.volsfx", DEF_VOL);
+       opt.music = ts_lookup_int(cfg, "options.audio.music", DEF_MUS);
+
+       opt.inv_mouse_y = ts_lookup_int(cfg, "options.controls.invmousey", DEF_INVMOUSEY);
+       opt.mouse_speed = ts_lookup_int(cfg, "options.controls.mousespeed", DEF_MOUSE_SPEED);
+
+       ts_free_tree(cfg);
+       return 0;
+}
+
+#define WROPT(lvl, fmt, val, defval) \
+       do { \
+               int i; \
+               for(i=0; i<lvl; i++) fputc('\t', fp); \
+               if((val) == (defval)) { \
+                       fprintf(fp, fmt "\t# default\n", val); \
+               } else { \
+                       fprintf(fp, fmt "\n", val); \
+               } \
+       } while(0)
+
+int save_options(const char *fname)
+{
+       FILE *fp;
+
+       printf("writing config: %s\n", fname);
+
+       if(!(fp = fopen(fname, "wb"))) {
+               fprintf(stderr, "failed to save options (%s): %s\n", fname, strerror(errno));
+       }
+       fprintf(fp, "options {\n");
+       fprintf(fp, "\tvideo {\n");
+       WROPT(2, "xres = %d", opt.xres, DEF_XRES);
+       WROPT(2, "yres = %d", opt.yres, DEF_YRES);
+       WROPT(2, "vsync = %d", opt.vsync, DEF_VSYNC);
+       WROPT(2, "fullscreen = %d", opt.fullscreen, DEF_FULLSCR);
+       fprintf(fp, "\t}\n");
+
+       fprintf(fp, "\taudio {\n");
+       WROPT(2, "volmaster = %d", opt.vol_master, DEF_VOL);
+       WROPT(2, "volmusic = %d", opt.vol_mus, DEF_VOL);
+       WROPT(2, "volsfx = %d", opt.vol_sfx, DEF_VOL);
+       WROPT(2, "music = %d", opt.music ? 1 : 0, DEF_MUS);
+       fprintf(fp, "\t}\n");
+
+       fprintf(fp, "\tcontrols {\n");
+       WROPT(2, "invmousey = %d", opt.inv_mouse_y, DEF_INVMOUSEY);
+       WROPT(2, "mousespeed = %d", opt.mouse_speed, DEF_MOUSE_SPEED);
+       fprintf(fp, "\t}\n");
+
+       fprintf(fp, "}\n");
+       fprintf(fp, "# v" "i:ts=4 sts=4 sw=4 noexpandtab:\n");
+
+       fclose(fp);
+       return 0;
+}