src/motif.c

   1 /*
   2  * X11 GUI for slide puzzle game
   3  * Copyright © 2022 Nick Bowler
   4  *
   5  * This program is free software: you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation, either version 3 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  17  */
  18
  19 #include <config.h>
  20 #include <stdio.h>
  21 #include <stdlib.h>
  22 #include <locale.h>
  23 #include <getopt.h>
  24
  25 #include <Xm/XmAll.h>
  26
  27 #include "help.h"
  28 #include "motif.h"
  29 #include "motifopt.h"
  30 #include "game.h"
  31 #include "version.h"
  32
  33 #define TIMER_UPDATE_MS 33
  34
  35 #define PROGNAME "rrace"
  36 static const char *progname = PROGNAME;
  37 static const struct option lopts[] = { LOPTS_INITIALIZER, {0} };
  38
  39 static char * const default_resources[] = {
  40         "*title: RRace",
  41         "*game.height: 371", // 365 + 2*shadowThickness
  42         "*game.width: 498",
  43
  44         "*game.XmFrame.shadowThickness: 3",
  45         "*game.XmFrame.shadowType: shadow_in",
  46         "*goalArea.leftOffset: 1",
  47
  48         "*gameNew.accelerator: Ctrl<Key>N",
  49         "*gameNew.acceleratorText: Ctrl+N",
  50         "*gameExit.accelerator: Ctrl<Key>Q",
  51         "*gameExit.acceleratorText: Ctrl+Q",
  52
  53         "*aboutDialog*pixmapTextPadding: 10",
  54
  55         NULL
  56 };
  57
  58 static void print_version(void)
  59 {
  60         version_print_head("rrace-motif", stdout);
  61         puts("License GPLv3+: GNU GPL version 3 or any later version");
  62         puts("This is free software: you are free to change and redistribute it.");
  63         puts("There is NO WARRANTY, to the extent permitted by law.");
  64 }
  65
  66 static void print_usage(FILE *f)
  67 {
  68         fprintf(f, "Usage: %s [options]\n", progname);
  69         if (f != stdout)
  70                 fprintf(f, "Try %s --help for more information.\n", progname);
  71 }
  72
  73 static void print_help(void)
  74 {
  75         struct lopt_help help = {0};
  76         const struct option *opt;
  77
  78         print_usage(stdout);
  79
  80         putchar('\n');
  81         puts("Options:");
  82         for (opt = lopts; opt->name; opt++) {
  83                 if (!lopt_get_help(opt, &help))
  84                         continue;
  85                 help_print_option(opt, help.arg, help.desc, 20);
  86         }
  87         putchar('\n');
  88
  89         printf("Report bugs to <%s>.\n", PACKAGE_BUGREPORT);
  90 }
  91
  92 static Widget early_setup(XtAppContext *app, int argc, char **argv)
  93 {
  94         Widget shell;
  95         int opt;
  96
  97         /* Check for --help/--version early (before X connection) */
  98         opterr = 0;
  99         while ((opt = getopt_long_only(argc, argv, "", lopts, NULL)) != -1) {
 100                 switch (opt) {
 101                 case LOPT_VERSION:
 102                         print_version();
 103                         exit(EXIT_SUCCESS);
 104                 case LOPT_HELP:
 105                         print_help();
 106                         exit(EXIT_SUCCESS);
 107                 }
 108         }
 109
 110         shell = XtOpenApplication(app, PACKAGE_TARNAME, NULL, 0,
 111                                   &argc, argv, (String *)default_resources,
 112                                   sessionShellWidgetClass, NULL, 0);
 113
 114         opterr = optind = 1;
 115         while ((opt = getopt_long_only(argc, argv, "", lopts, NULL)) != -1) {
 116                 switch (opt) {
 117                 default:
 118                         print_usage(stderr);
 119                         exit(EXIT_FAILURE);
 120                 }
 121         }
 122
 123         if (argv[optind]) {
 124                 fprintf(stderr, "%s: excess command-line arguments.\n",
 125                                 progname);
 126                 print_usage(stderr);
 127                 exit(EXIT_FAILURE);
 128         }
 129
 130         return shell;
 131 }
 132
 133 static void timer_tick(void *data, XtIntervalId *id)
 134 {
 135         struct app_state *state = data;
 136         XtAppContext app;
 137
 138         if (state->board.x > 4) {
 139                 /* Game is over */
 140                 state->timer_tick = 0;
 141                 return;
 142         }
 143
 144         app = XtWidgetToApplicationContext(state->timer);
 145         ui_timer_update(state, game_elapsed(&state->board));
 146         state->timer_tick = XtAppAddTimeOut(app, TIMER_UPDATE_MS,
 147                                             timer_tick, state);
 148 }
 149
 150 static void do_input_move(struct app_state *state, int x, int y)
 151 {
 152         uint_fast32_t mask;
 153
 154         if ((mask = game_do_move(&state->board, x, y)) != 0) {
 155                 if (game_check_goal(&state->board) == 0) {
 156                         int_fast32_t ms = game_finish(&state->board);
 157                         unsigned min, sec;
 158
 159                         ui_timer_update(state, ms);
 160
 161                         sec = ms / 1000, ms %= 1000;
 162                         min = sec / 60, sec %= 60;
 163                         printf("You won!  Time was %u:%.2u.%.3u\n",
 164                                min, sec, (unsigned)ms);
 165
 166                         mask |= ~GOAL_MASK;
 167                 }
 168
 169                 x11_redraw_game(state, mask);
 170         }
 171 }
 172
 173 static void set_view_goal(struct app_state *state, int view_goal)
 174 {
 175         state->view_goal_on_game = view_goal;
 176         x11_redraw_game(state, game_check_goal(&state->board));
 177 }
 178
 179 static void game_input(Widget w, void *data, void *cb_data)
 180 {
 181         XmDrawingAreaCallbackStruct *cbs = cb_data;
 182         XButtonEvent *b = &cbs->event->xbutton;
 183         struct app_state *state = data;
 184         Dimension width, height;
 185
 186         switch (cbs->event->type) {
 187         case ButtonPress:
 188                 switch (b->button) {
 189                 case Button1:
 190                         if (b->state & Button3Mask)
 191                                 break;
 192
 193                         XtVaGetValues(w, XmNwidth, &width,
 194                                          XmNheight, &height,
 195                                          (char *)NULL);
 196
 197                         do_input_move(state, b->x / (width / 5),
 198                                              b->y / (height / 5));
 199                         break;
 200                 case Button3:
 201                         set_view_goal(state, 1);
 202                         break;
 203                 }
 204                 break;
 205         case ButtonRelease:
 206                 switch (b->button) {
 207                 case Button3:
 208                         set_view_goal(state, 0);
 209                         break;
 210                 }
 211         }
 212 }
 213
 214 static struct app_state state;
 215
 216 static Widget get_shell(Widget w)
 217 {
 218         Widget shell;
 219
 220         for (shell = w; !XtIsWMShell(shell);)
 221                 shell = XtParent(shell);
 222
 223         return shell;
 224 }
 225
 226 static void proc_exit(Widget w, XEvent *e, String *argv, Cardinal *argc)
 227 {
 228         XtAppSetExitFlag(XtWidgetToApplicationContext(w));
 229 }
 230
 231 static void proc_new_game(Widget w, XEvent *e, String *argv, Cardinal *argc)
 232 {
 233         game_reset(&state.board);
 234
 235         x11_redraw_goal(&state, -1);
 236         x11_redraw_game(&state, -1);
 237         x11_redraw_icon(&state, get_shell(w));
 238
 239         if (!state.timer_tick) {
 240                 XtAppContext app = XtWidgetToApplicationContext(w);
 241                 state.timer_tick = XtAppAddTimeOut(app, TIMER_UPDATE_MS,
 242                                                    timer_tick, &state);
 243         }
 244
 245         game_begin(&state.board);
 246 }
 247
 248 static void proc_about(Widget w, XEvent *e, String *argv, Cardinal *argc)
 249 {
 250         ui_show_about(&state, get_shell(w));
 251 }
 252
 253 static const XtActionsRec menu_actions[] = {
 254         { "gameNew", proc_new_game },
 255         { "gameExit", proc_exit },
 256         { "helpAbout", proc_about }
 257 };
 258
 259 static XtAppContext app_initialize(int argc, char **argv)
 260 {
 261         XtAppContext app;
 262         Widget shell;
 263         int i;
 264
 265         if (argc > 0)
 266                 progname = argv[0];
 267
 268         shell = early_setup(&app, argc, argv);
 269         XtAppAddActions(app, (void *)menu_actions, XtNumber(menu_actions));
 270         ui_initialize(&state, shell);
 271         x11_initialize(&state, shell);
 272
 273         XtAddCallback(state.game, XmNinputCallback,  game_input, &state);
 274
 275         /* Begin with the game in winning state */
 276         game_reset(&state.board);
 277         for (i = 0; i < 3; i++)
 278                 state.board.game[i] = state.board.goal[i] << GOAL_SHIFT;
 279         game_finish(&state.board);
 280
 281         state.use_ewmh_icons = ewmh_probe_wm_icon(shell);
 282         XtRealizeWidget(shell);
 283
 284         x11_redraw_icon(&state, shell);
 285
 286         return app;
 287 }
 288
 289 int main(int argc, char **argv)
 290 {
 291         setlocale(LC_ALL, "");
 292         XtAppMainLoop(app_initialize(argc, argv));
 293         return 0;
 294 }