vrseasons
annotate src/opt.cc @ 1:65c2e37c48b2
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| author | John Tsiombikas <nuclear@member.fsf.org> |
|---|---|
| date | Sun, 12 Apr 2015 03:39:55 +0300 |
| parents | 393ef1143c9c |
| children |
| rev | line source |
|---|---|
| nuclear@0 | 1 #include <stdio.h> |
| nuclear@1 | 2 #include <string.h> |
| nuclear@0 | 3 #include "opt.h" |
| nuclear@0 | 4 |
| nuclear@0 | 5 enum { |
| nuclear@0 | 6 OPT_SIZE, |
| nuclear@0 | 7 OPT_FULLSCREEN, |
| nuclear@0 | 8 OPT_WINDOWED, |
| nuclear@0 | 9 OPT_VR, |
| nuclear@0 | 10 OPT_HELP, |
| nuclear@0 | 11 |
| nuclear@0 | 12 NUM_OPTS |
| nuclear@0 | 13 }; |
| nuclear@0 | 14 static const char *optname[] = { |
| nuclear@0 | 15 "size", "fullscreen", "windowed", "vr", "help", 0 |
| nuclear@0 | 16 }; |
| nuclear@0 | 17 |
| nuclear@0 | 18 static int get_option(const char *str); |
| nuclear@0 | 19 |
| nuclear@0 | 20 void default_opt(Options *opt) |
| nuclear@0 | 21 { |
| nuclear@0 | 22 opt->xres = 1280; |
| nuclear@0 | 23 opt->yres = 800; |
| nuclear@0 | 24 opt->fov = 50.0; |
| nuclear@0 | 25 opt->fullscreen = false; |
| nuclear@0 | 26 opt->use_vr = false; |
| nuclear@0 | 27 } |
| nuclear@0 | 28 |
| nuclear@0 | 29 bool parse_args(Options *opt, int argc, char **argv) |
| nuclear@0 | 30 { |
| nuclear@0 | 31 for(int i=1; i<argc; i++) { |
| nuclear@0 | 32 if(argv[i][0] == '-') { |
| nuclear@0 | 33 int o = get_option(argv[i] + 1); |
| nuclear@0 | 34 switch(o) { |
| nuclear@0 | 35 case OPT_SIZE: |
| nuclear@0 | 36 if(sscanf(argv[++i], "%dx%d", &opt->xres, &opt->yres) != 2) { |
| nuclear@0 | 37 fprintf(stderr, "invalid argument to option: %s\n", argv[i - 1]); |
| nuclear@0 | 38 return false; |
| nuclear@0 | 39 } |
| nuclear@0 | 40 break; |
| nuclear@0 | 41 |
| nuclear@0 | 42 case OPT_FULLSCREEN: |
| nuclear@0 | 43 opt->fullscreen = true; |
| nuclear@0 | 44 break; |
| nuclear@0 | 45 case OPT_WINDOWED: |
| nuclear@0 | 46 opt->fullscreen = false; |
| nuclear@0 | 47 break; |
| nuclear@0 | 48 |
| nuclear@0 | 49 case OPT_VR: |
| nuclear@0 | 50 opt->use_vr = true; |
| nuclear@0 | 51 break; |
| nuclear@0 | 52 |
| nuclear@0 | 53 case OPT_HELP: |
| nuclear@0 | 54 printf("options:\n"); |
| nuclear@0 | 55 for(int j=0; optname[j]; j++) { |
| nuclear@0 | 56 printf(" -%s\n", optname[j]); |
| nuclear@0 | 57 } |
| nuclear@0 | 58 break; |
| nuclear@0 | 59 } |
| nuclear@0 | 60 } |
| nuclear@0 | 61 } |
| nuclear@1 | 62 return true; |
| nuclear@0 | 63 } |
| nuclear@0 | 64 |
| nuclear@0 | 65 static int get_option(const char *str) |
| nuclear@0 | 66 { |
| nuclear@1 | 67 for(int i=0; optname[i]; i++) { |
| nuclear@0 | 68 if(strcmp(str, optname[i]) == 0) { |
| nuclear@0 | 69 return i; |
| nuclear@0 | 70 } |
| nuclear@0 | 71 } |
| nuclear@0 | 72 return -1; |
| nuclear@0 | 73 } |