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 "ewmhicon.h"
  30 #include "motifopt.h"
  31 #include "game.h"
  32 #include "version.h"
  33
  34 #define TIMER_UPDATE_MS 33
  35
  36 #define PROGNAME "rrace"
  37 static const char *progname = PROGNAME;
  38 static const struct option lopts[] = { LOPTS_INITIALIZER, {0} };
  39
  40 static char * const default_resources[] = {
  41         "*title: RRace",
  42         "*game.height: 371", // 365 + 2*shadowThickness
  43         "*game.width: 498",
  44
  45         "*game.XmFrame.shadowThickness: 3",
  46         "*game.XmFrame.shadowType: shadow_in",
  47         "*goalArea.leftOffset: 1",
  48
  49         "*gameNew.accelerator: Ctrl<Key>N",
  50         "*gameNew.acceleratorText: Ctrl+N",
  51         "*gameExit.accelerator: Ctrl<Key>Q",
  52         "*gameExit.acceleratorText: Ctrl+Q",
  53
  54         "*aboutDialog*pixmapTextPadding: 10",
  55
  56         NULL
  57 };
  58
  59 static void print_version(void)
  60 {
  61         version_print_head("rrace-motif", stdout);
  62         puts("License GPLv3+: GNU GPL version 3 or any later version");
  63         puts("This is free software: you are free to change and redistribute it.");
  64         puts("There is NO WARRANTY, to the extent permitted by law.");
  65 }
  66
  67 static void print_usage(FILE *f)
  68 {
  69         fprintf(f, "Usage: %s [options]\n", progname);
  70         if (f != stdout)
  71                 fprintf(f, "Try %s --help for more information.\n", progname);
  72 }
  73
  74 static void print_help(void)
  75 {
  76         struct lopt_help help = {0};
  77         const struct option *opt;
  78
  79         print_usage(stdout);
  80
  81         putchar('\n');
  82         puts("Options:");
  83         for (opt = lopts; opt->name; opt++) {
  84                 if (!lopt_get_help(opt, &help))
  85                         continue;
  86                 help_print_option(opt, help.arg, help.desc, 20);
  87         }
  88         putchar('\n');
  89
  90         printf("Report bugs to <%s>.\n", PACKAGE_BUGREPORT);
  91 }
  92
  93 static Widget early_setup(XtAppContext *app, int argc, char **argv)
  94 {
  95         Widget shell;
  96         int opt;
  97
  98         /* Check for --help/--version early (before X connection) */
  99         opterr = 0;
 100         while ((opt = getopt_long_only(argc, argv, "", lopts, NULL)) != -1) {
 101                 switch (opt) {
 102                 case LOPT_VERSION:
 103                         print_version();
 104                         exit(EXIT_SUCCESS);
 105                 case LOPT_HELP:
 106                         print_help();
 107                         exit(EXIT_SUCCESS);
 108                 }
 109         }
 110
 111         shell = XtOpenApplication(app, PACKAGE_TARNAME, NULL, 0,
 112                                   &argc, argv, (String *)default_resources,
 113                                   sessionShellWidgetClass, NULL, 0);
 114
 115         opterr = optind = 1;
 116         while ((opt = getopt_long_only(argc, argv, "", lopts, NULL)) != -1) {
 117                 switch (opt) {
 118                 default:
 119                         print_usage(stderr);
 120                         exit(EXIT_FAILURE);
 121                 }
 122         }
 123
 124         if (argv[optind]) {
 125                 fprintf(stderr, "%s: excess command-line arguments.\n",
 126                                 progname);
 127                 print_usage(stderr);
 128                 exit(EXIT_FAILURE);
 129         }
 130
 131         return shell;
 132 }
 133
 134 static void timer_tick(void *data, XtIntervalId *id)
 135 {
 136         struct app_state *state = data;
 137         XtAppContext app;
 138
 139         if (state->board.x > 4) {
 140                 /* Game is over */
 141                 state->timer_tick = 0;
 142                 return;
 143         }
 144
 145         app = XtWidgetToApplicationContext(state->timer);
 146         ui_timer_update(state, game_elapsed(&state->board));
 147         state->timer_tick = XtAppAddTimeOut(app, TIMER_UPDATE_MS,
 148                                             timer_tick, state);
 149 }
 150
 151 static void do_input_move(struct app_state *state, int x, int y)
 152 {
 153         uint_fast32_t mask;
 154
 155         if ((mask = game_do_move(&state->board, x, y)) != 0) {
 156                 if (game_check_goal(&state->board) == 0) {
 157                         int_fast32_t ms = game_finish(&state->board);
 158                         unsigned min, sec;
 159
 160                         ui_timer_update(state, ms);
 161
 162                         sec = ms / 1000, ms %= 1000;
 163                         min = sec / 60, sec %= 60;
 164                         printf("You won!  Time was %u:%.2u.%.3u\n",
 165                                min, sec, (unsigned)ms);
 166
 167                         mask |= ~GOAL_MASK;
 168                 }
 169
 170                 x11_redraw_game(state, mask);
 171         }
 172 }
 173
 174 static void set_view_goal(struct app_state *state, int view_goal)
 175 {
 176         state->view_goal_on_game = view_goal;
 177         x11_redraw_game(state, game_check_goal(&state->board));
 178 }
 179
 180 static void game_input(Widget w, void *data, void *cb_data)
 181 {
 182         XmDrawingAreaCallbackStruct *cbs = cb_data;
 183         XButtonEvent *b = &cbs->event->xbutton;
 184         struct app_state *state = data;
 185         Dimension width, height;
 186
 187         switch (cbs->event->type) {
 188         case ButtonPress:
 189                 switch (b->button) {
 190                 case Button1:
 191                         if (b->state & Button3Mask)
 192                                 break;
 193
 194                         XtVaGetValues(w, XmNwidth, &width,
 195                                          XmNheight, &height,
 196                                          (char *)NULL);
 197
 198                         do_input_move(state, b->x / (width / 5),
 199                                              b->y / (height / 5));
 200                         break;
 201                 case Button3:
 202                         set_view_goal(state, 1);
 203                         break;
 204                 }
 205                 break;
 206         case ButtonRelease:
 207                 switch (b->button) {
 208                 case Button3:
 209                         set_view_goal(state, 0);
 210                         break;
 211                 }
 212         }
 213 }
 214
 215 static struct app_state state;
 216
 217 static Widget get_shell(Widget w)
 218 {
 219         Widget shell;
 220
 221         for (shell = w; !XtIsWMShell(shell);)
 222                 shell = XtParent(shell);
 223
 224         return shell;
 225 }
 226
 227 static void proc_exit(Widget w, XEvent *e, String *argv, Cardinal *argc)
 228 {
 229         XtAppSetExitFlag(XtWidgetToApplicationContext(w));
 230 }
 231
 232 static void proc_new_game(Widget w, XEvent *e, String *argv, Cardinal *argc)
 233 {
 234         game_reset(&state.board);
 235
 236         x11_redraw_goal(&state, -1);
 237         x11_redraw_game(&state, -1);
 238         x11_redraw_icon(&state, get_shell(w));
 239
 240         if (!state.timer_tick) {
 241                 XtAppContext app = XtWidgetToApplicationContext(w);
 242                 state.timer_tick = XtAppAddTimeOut(app, TIMER_UPDATE_MS,
 243                                                    timer_tick, &state);
 244         }
 245
 246         game_begin(&state.board);
 247 }
 248
 249 static void proc_about(Widget w, XEvent *e, String *argv, Cardinal *argc)
 250 {
 251         ui_show_about(&state, get_shell(w));
 252 }
 253
 254 static const XtActionsRec menu_actions[] = {
 255         { "gameNew", proc_new_game },
 256         { "gameExit", proc_exit },
 257         { "helpAbout", proc_about }
 258 };
 259
 260 static XtAppContext app_initialize(int argc, char **argv)
 261 {
 262         XtAppContext app;
 263         Widget shell;
 264         int i;
 265
 266         if (argc > 0)
 267                 progname = argv[0];
 268
 269         shell = early_setup(&app, argc, argv);
 270         XtAppAddActions(app, (void *)menu_actions, XtNumber(menu_actions));
 271         ui_initialize(&state, shell);
 272         x11_initialize(&state, shell);
 273
 274         XtAddCallback(state.game, XmNinputCallback,  game_input, &state);
 275
 276         /* Begin with the game in winning state */
 277         game_reset(&state.board);
 278         for (i = 0; i < 3; i++)
 279                 state.board.game[i] = state.board.goal[i] << GOAL_SHIFT;
 280         game_finish(&state.board);
 281
 282         state.use_ewmh_icons = ewmh_probe_wm_icon(shell);
 283         XtRealizeWidget(shell);
 284
 285         x11_redraw_icon(&state, shell);
 286
 287         return app;
 288 }
 289
 290 int main(int argc, char **argv)
 291 {
 292         setlocale(LC_ALL, "");
 293         XtAppMainLoop(app_initialize(argc, argv));
 294         return 0;
 295 }