X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?a=blobdiff_plain;f=src%2Foptions.c;fp=src%2Foptions.c;h=34dee8fc24b7379efb4e8641e5143beeaec4d93a;hb=d5f45e3128c537f272615cf76242e1dfebccdee7;hp=0000000000000000000000000000000000000000;hpb=dd7ce87b0ad2b8a1b4758bcc9354e993b71c8599;p=raydungeon

diff --git a/src/options.c b/src/options.c
new file mode 100644
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;
+}