235 lines
7.3 KiB
C
235 lines
7.3 KiB
C
/*
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* xrick/src/sysarg.c
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*
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* Copyright (C) 1998-2002 BigOrno (bigorno@bigorno.net). All rights reserved.
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*
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* The use and distribution terms for this software are contained in the file
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* named README, which can be found in the root of this distribution. By
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* using this software in any fashion, you are agreeing to be bound by the
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* terms of this license.
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*
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* You must not remove this notice, or any other, from this software.
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*/
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/*
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* 20021010 added test to prevent buffer overrun in -keys parsing.
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*/
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#include <stdlib.h> /* atoi */
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#include <string.h> /* strcasecmp */
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#include <SDL.h>
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#include "system.h"
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#include "config.h"
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#include "game.h"
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#include "maps.h"
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#include "syssnd.h"
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/* handle Microsoft Visual C (must come after system.h!) */
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#ifdef __MSVC__
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#define strcasecmp stricmp
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#endif
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typedef struct {
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char name[16];
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int code;
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} sdlcodes_t;
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static sdlcodes_t sdlcodes[SDLK_LAST] = {
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#include "sdlcodes.e"
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};
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int sysarg_args_period = 0;
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int sysarg_args_map = 0;
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int sysarg_args_submap = 0;
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int sysarg_args_fullscreen = 0;
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int sysarg_args_zoom = 0;
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int sysarg_args_nosound = 0;
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int sysarg_args_vol = 0;
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char *sysarg_args_data = NULL;
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/*
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* Fail
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*/
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void
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sysarg_fail(char *msg)
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{
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#ifdef ENABLE_SOUND
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printf("xrick [version #%s]: %s\nusage: xrick [<options>]\n<option> =\n -h, -help : Display this information. -fullscreen : Run in fullscreen mode.\n The default is to run in a window.\n -speed <speed> : Run at speed <speed>. Speed must be an integer between 1\n (fast) and 100 (slow). The default is %d\n -zoom <zoom> : Display with zoom factor <zoom>. <zoom> must be an integer\n between 1 (320x200) and %d (%d times bigger). The default is 2.\n -map <map> : Start at map number <map>. <map> must be an integer between\n 1 and %d. The default is to start at map number 1\n -submap <submap> : Start at submap <submap>. <submap> must be an integer\n between 1 and %d. The default is to start at submap number 1 or, if a map\n was specified, at the first submap of that map.\n -keys <left>-<right>-<up>-<down>-<fire> : Override the default key\n bindings (cf. KeyCodes)\n -nosound : Disable sounds. The default is to play with sounds enabled.\n -vol <vol> : Play sounds at volume <vol>. <vol> must be an integer\n between 0 (silence) and %d (max). The default is to play sounds\n at maximal volume (%d).\n", VERSION, msg, GAME_PERIOD, SYSVID_MAXZOOM, SYSVID_MAXZOOM, MAP_NBR_MAPS-1, MAP_NBR_SUBMAPS, SYSSND_MAXVOL, SYSSND_MAXVOL);
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#else
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printf("xrick [version #%s]: %s\nusage: xrick [<options>]\n<option> =\n -h, -help : Display this information. -fullscreen : Run in fullscreen mode.\n The default is to run in a window.\n -speed <speed> : Run at speed <speed>. Speed must be an integer between 1\n (fast) and 100 (slow). The default is %d\n -zoom <zoom> : Display with zoom factor <zoom>. <zoom> must be an integer\n between 1 (320x200) and %d (%d times bigger). The default is 2.\n -map <map> : Start at map number <map>. <map> must be an integer between\n 1 and %d. The default is to start at map number 1\n -submap <submap> : Start at submap <submap>. <submap> must be an integer\n between 1 and %d. The default is to start at submap number 1 or, if a map\n was specified, at the first submap of that map.\n -keys <left>-<right>-<up>-<down>-<fire> : Override the default key\n bindings (cf. KeyCodes)\n", VERSION, msg, GAME_PERIOD, SYSVID_MAXZOOM, SYSVID_MAXZOOM, MAP_NBR_MAPS-1, MAP_NBR_SUBMAPS);
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#endif
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exit(1);
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}
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/*
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* Get SDL key code
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*/
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static int
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sysarg_sdlcode(char *k)
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{
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int i, result;
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i = 0;
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result = 0;
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while (sdlcodes[i].code) {
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if (!strcasecmp(sdlcodes[i].name, k)) {
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result = sdlcodes[i].code;
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break;
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}
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i++;
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}
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return result;
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}
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/*
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* Scan key codes sequence
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*/
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int
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sysarg_scankeys(char *keys)
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{
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char k[16];
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int i, j;
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i = 0;
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j = 0;
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while (keys[i] != '\0' && keys[i] != '-' && j + 1 < sizeof k) k[j++] = keys[i++];
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if (keys[i++] == '\0') return -1;
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k[j] = '\0';
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syskbd_left = sysarg_sdlcode(k);
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if (!syskbd_left) return -1;
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j = 0;
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while (keys[i] != '\0' && keys[i] != '-' && j + 1 < sizeof k) k[j++] = keys[i++];
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if (keys[i++] == '\0') return -1;
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k[j] = '\0';
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syskbd_right = sysarg_sdlcode(k);
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if (!syskbd_right) return -1;
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j = 0;
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while (keys[i] != '\0' && keys[i] != '-' && j + 1 < sizeof k) k[j++] = keys[i++];
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if (keys[i++] == '\0') return -1;
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k[j] = '\0';
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syskbd_up = sysarg_sdlcode(k);
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if (!syskbd_up) return -1;
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j = 0;
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while (keys[i] != '\0' && keys[i] != '-' && j + 1 < sizeof k) k[j++] = keys[i++];
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if (keys[i++] == '\0') return -1;
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k[j] = '\0';
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syskbd_down = sysarg_sdlcode(k);
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if (!syskbd_down) return -1;
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j = 0;
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while (keys[i] != '\0' && keys[i] != '-' && j + 1 < sizeof k) k[j++] = keys[i++];
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if (keys[i] != '\0') return -1;
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k[j] = '\0';
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syskbd_fire = sysarg_sdlcode(k);
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if (!syskbd_fire) return -1;
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return 0;
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}
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/*
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* Read and process arguments
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*/
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void
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sysarg_init(int argc, char **argv)
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{
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int i;
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for (i = 1; i < argc; i++) {
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if (!strcmp(argv[i], "-fullscreen")) {
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sysarg_args_fullscreen = 1;
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}
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else if (!strcmp(argv[i], "-help") ||
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!strcmp(argv[i], "-h")) {
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sysarg_fail("help");
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}
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else if (!strcmp(argv[i], "-speed")) {
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if (++i == argc) sysarg_fail("missing speed value");
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sysarg_args_period = atoi(argv[i]) - 1;
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if (sysarg_args_period < 0 || sysarg_args_period > 99)
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sysarg_fail("invalid speed value");
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}
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else if (!strcmp(argv[i], "-keys")) {
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if (++i == argc) sysarg_fail("missing key codes");
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if (sysarg_scankeys(argv[i]) == -1)
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sysarg_fail("invalid key codes");
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}
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else if (!strcmp(argv[i], "-zoom")) {
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if (++i == argc) sysarg_fail("missing zoom value");
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sysarg_args_zoom = atoi(argv[i]);
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if (sysarg_args_zoom < 1 || sysarg_args_zoom > SYSVID_MAXZOOM)
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sysarg_fail("invalid zoom value");
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}
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else if (!strcmp(argv[i], "-map")) {
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if (++i == argc) sysarg_fail("missing map number");
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sysarg_args_map = atoi(argv[i]) - 1;
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if (sysarg_args_map < 0 || sysarg_args_map >= MAP_NBR_MAPS-1)
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sysarg_fail("invalid map number");
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}
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else if (!strcmp(argv[i], "-submap")) {
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if (++i == argc) sysarg_fail("missing submap number");
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sysarg_args_submap = atoi(argv[i]) - 1;
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if (sysarg_args_submap < 0 || sysarg_args_submap >= MAP_NBR_SUBMAPS)
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sysarg_fail("invalid submap number");
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}
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#ifdef ENABLE_SOUND
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else if (!strcmp(argv[i], "-vol")) {
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if (++i == argc) sysarg_fail("missing volume");
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sysarg_args_vol = atoi(argv[i]) - 1;
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if (sysarg_args_submap < 0 || sysarg_args_submap >= SYSSND_MAXVOL)
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sysarg_fail("invalid volume");
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}
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else if (!strcmp(argv[i], "-nosound")) {
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sysarg_args_nosound = 1;
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}
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#endif
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else if (!strcmp(argv[i], "-data")) {
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if (++i == argc) sysarg_fail("missing data");
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sysarg_args_data = argv[i];
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}
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else {
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sysarg_fail("invalid argument(s)");
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}
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}
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/* this is dirty (sort of) */
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if (sysarg_args_submap > 0 && sysarg_args_submap < 9)
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sysarg_args_map = 0;
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if (sysarg_args_submap >= 9 && sysarg_args_submap < 20)
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sysarg_args_map = 1;
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if (sysarg_args_submap >= 20 && sysarg_args_submap < 38)
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sysarg_args_map = 2;
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if (sysarg_args_submap >= 38)
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sysarg_args_map = 3;
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if (sysarg_args_submap == 9 ||
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sysarg_args_submap == 20 ||
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sysarg_args_submap == 38)
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sysarg_args_submap = 0;
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}
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/* eof */
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