nuclear@0: #include <stdio.h>
nuclear@1: #include <string.h>
nuclear@0: #include "opt.h"
nuclear@0: 
nuclear@0: enum {
nuclear@0: 	OPT_SIZE,
nuclear@0: 	OPT_FULLSCREEN,
nuclear@0: 	OPT_WINDOWED,
nuclear@0: 	OPT_VR,
nuclear@0: 	OPT_HELP,
nuclear@0: 
nuclear@0: 	NUM_OPTS
nuclear@0: };
nuclear@0: static const char *optname[] = {
nuclear@0: 	"size", "fullscreen", "windowed", "vr", "help", 0
nuclear@0: };
nuclear@0: 
nuclear@0: static int get_option(const char *str);
nuclear@0: 
nuclear@0: void default_opt(Options *opt)
nuclear@0: {
nuclear@0: 	opt->xres = 1280;
nuclear@0: 	opt->yres = 800;
nuclear@0: 	opt->fov = 50.0;
nuclear@0: 	opt->fullscreen = false;
nuclear@0: 	opt->use_vr = false;
nuclear@0: }
nuclear@0: 
nuclear@0: bool parse_args(Options *opt, int argc, char **argv)
nuclear@0: {
nuclear@0: 	for(int i=1; i<argc; i++) {
nuclear@0: 		if(argv[i][0] == '-') {
nuclear@0: 			int o = get_option(argv[i] + 1);
nuclear@0: 			switch(o) {
nuclear@0: 			case OPT_SIZE:
nuclear@0: 				if(sscanf(argv[++i], "%dx%d", &opt->xres, &opt->yres) != 2) {
nuclear@0: 					fprintf(stderr, "invalid argument to option: %s\n", argv[i - 1]);
nuclear@0: 					return false;
nuclear@0: 				}
nuclear@0: 				break;
nuclear@0: 
nuclear@0: 			case OPT_FULLSCREEN:
nuclear@0: 				opt->fullscreen = true;
nuclear@0: 				break;
nuclear@0: 			case OPT_WINDOWED:
nuclear@0: 				opt->fullscreen = false;
nuclear@0: 				break;
nuclear@0: 
nuclear@0: 			case OPT_VR:
nuclear@0: 				opt->use_vr = true;
nuclear@0: 				break;
nuclear@0: 
nuclear@0: 			case OPT_HELP:
nuclear@0: 				printf("options:\n");
nuclear@0: 				for(int j=0; optname[j]; j++) {
nuclear@0: 					printf(" -%s\n", optname[j]);
nuclear@0: 				}
nuclear@0: 				break;
nuclear@0: 			}
nuclear@0: 		}
nuclear@0: 	}
nuclear@1: 	return true;
nuclear@0: }
nuclear@0: 
nuclear@0: static int get_option(const char *str)
nuclear@0: {
nuclear@1: 	for(int i=0; optname[i]; i++) {
nuclear@0: 		if(strcmp(str, optname[i]) == 0) {
nuclear@0: 			return i;
nuclear@0: 		}
nuclear@0: 	}
nuclear@0: 	return -1;
nuclear@0: }