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 <getopt.h>
  23
  24 #include <Xm/XmAll.h>
  25
  26 #include "help.h"
  27 #include "motif.h"
  28 #include "motifopt.h"
  29 #include "game.h"
  30
  31 #define TIMER_UPDATE_MS 33
  32
  33 #define PROGNAME "rrace"
  34 static const char *progname = PROGNAME;
  35 static const struct option lopts[] = { LOPTS_INITIALIZER, {0} };
  36
  37 static char * const default_resources[] = {
  38         "*title: RRace",
  39         "*game.height: 371", // 365 + 2*shadowThickness
  40         "*game.width: 498",
  41
  42         "*game.XmFrame.shadowThickness: 3",
  43         "*game.XmFrame.shadowType: shadow_in",
  44         "*goalArea.leftOffset: 1",
  45
  46         "*gameNew.accelerator: Ctrl<Key>N",
  47         "*gameNew.acceleratorText: Ctrl+N",
  48         "*gameExit.accelerator: Ctrl<Key>Q",
  49         "*gameExit.acceleratorText: Ctrl+Q",
  50
  51         NULL
  52 };
  53
  54 static void print_version(void)
  55 {
  56         printf("%s %s\n", PROGNAME, PACKAGE_VERSION);
  57         printf("Copyright (C) 2022 Nick Bowler\n");
  58         puts("License GPLv3+: GNU GPL version 3 or any later version");
  59         puts("This is free software: you are free to change and redistribute it.");
  60         puts("There is NO WARRANTY, to the extent permitted by law.");
  61 }
  62
  63 static void print_usage(FILE *f)
  64 {
  65         fprintf(f, "Usage: %s [options]\n", progname);
  66         if (f != stdout)
  67                 fprintf(f, "Try %s --help for more information.\n", progname);
  68 }
  69
  70 static void print_help(void)
  71 {
  72         struct lopt_help help = {0};
  73         const struct option *opt;
  74
  75         print_usage(stdout);
  76
  77         putchar('\n');
  78         puts("Options:");
  79         for (opt = lopts; opt->name; opt++) {
  80                 if (!lopt_get_help(opt, &help))
  81                         continue;
  82                 help_print_option(opt, help.arg, help.desc, 20);
  83         }
  84         putchar('\n');
  85
  86         printf("Report bugs to <%s>.\n", PACKAGE_BUGREPORT);
  87 }
  88
  89 static Widget early_setup(XtAppContext *app, int argc, char **argv)
  90 {
  91         Widget shell;
  92         int opt;
  93
  94         /* Check for --help/--version early (before X connection) */
  95         opterr = 0;
  96         while ((opt = getopt_long_only(argc, argv, "", lopts, NULL)) != -1) {
  97                 switch (opt) {
  98                 case LOPT_VERSION:
  99                         print_version();
 100                         exit(EXIT_SUCCESS);
 101                 case LOPT_HELP:
 102                         print_help();
 103                         exit(EXIT_SUCCESS);
 104                 }
 105         }
 106
 107         shell = XtOpenApplication(app, PACKAGE_TARNAME, NULL, 0,
 108                                   &argc, argv, (String *)default_resources,
 109                                   sessionShellWidgetClass, NULL, 0);
 110
 111         opterr = optind = 1;
 112         while ((opt = getopt_long_only(argc, argv, "", lopts, NULL)) != -1) {
 113                 switch (opt) {
 114                 default:
 115                         print_usage(stderr);
 116                         exit(EXIT_FAILURE);
 117                 }
 118         }
 119
 120         if (argv[optind]) {
 121                 fprintf(stderr, "%s: excess command-line arguments.\n",
 122                                 progname);
 123                 print_usage(stderr);
 124                 exit(EXIT_FAILURE);
 125         }
 126
 127         return shell;
 128 }
 129
 130 static void timer_tick(void *data, XtIntervalId *id)
 131 {
 132         struct app_state *state = data;
 133         XtAppContext app;
 134
 135         if (state->board.x > 4) {
 136                 /* Game is over */
 137                 state->timer_tick = 0;
 138                 return;
 139         }
 140
 141         app = XtWidgetToApplicationContext(state->timer);
 142         ui_timer_update(state, game_elapsed(&state->board));
 143         state->timer_tick = XtAppAddTimeOut(app, TIMER_UPDATE_MS,
 144                                             timer_tick, state);
 145 }
 146
 147 static void do_input_move(struct app_state *state, int x, int y)
 148 {
 149         uint_fast32_t mask;
 150
 151         if ((mask = game_do_move(&state->board, x, y)) != 0) {
 152                 if (game_check_goal(&state->board) == 0) {
 153                         int_fast32_t ms = game_finish(&state->board);
 154                         unsigned min, sec;
 155
 156                         ui_timer_update(state, ms);
 157
 158                         sec = ms / 1000, ms %= 1000;
 159                         min = sec / 60, sec %= 60;
 160                         printf("You won!  Time was %u:%.2u.%.3u\n",
 161                                min, sec, (unsigned)ms);
 162
 163                         mask |= ~GOAL_MASK;
 164                 }
 165
 166                 x11_redraw_game(state, mask);
 167         }
 168 }
 169
 170 static void set_view_goal(struct app_state *state, int view_goal)
 171 {
 172         state->view_goal_on_game = view_goal;
 173         x11_redraw_game(state, game_check_goal(&state->board));
 174 }
 175
 176 static void game_input(Widget w, void *data, void *cb_data)
 177 {
 178         XmDrawingAreaCallbackStruct *cbs = cb_data;
 179         XButtonEvent *b = &cbs->event->xbutton;
 180         struct app_state *state = data;
 181         Dimension width, height;
 182
 183         switch (cbs->event->type) {
 184         case ButtonPress:
 185                 switch (b->button) {
 186                 case Button1:
 187                         if (b->state & Button3Mask)
 188                                 break;
 189
 190                         XtVaGetValues(w, XmNwidth, &width,
 191                                          XmNheight, &height,
 192                                          (char *)NULL);
 193
 194                         do_input_move(state, b->x / (width / 5),
 195                                              b->y / (height / 5));
 196                         break;
 197                 case Button3:
 198                         set_view_goal(state, 1);
 199                         break;
 200                 }
 201                 break;
 202         case ButtonRelease:
 203                 switch (b->button) {
 204                 case Button3:
 205                         set_view_goal(state, 0);
 206                         break;
 207                 }
 208         }
 209 }
 210
 211 static struct app_state state;
 212
 213 static void proc_exit(Widget w, XEvent *e, String *argv, Cardinal *argc)
 214 {
 215         XtAppSetExitFlag(XtWidgetToApplicationContext(w));
 216 }
 217
 218 static void proc_new_game(Widget w, XEvent *e, String *argv, Cardinal *argc)
 219 {
 220         Widget shell;
 221
 222         for (shell = w; !XtIsWMShell(shell);)
 223                 shell = XtParent(shell);
 224
 225         game_reset(&state.board);
 226
 227         x11_redraw_goal(&state, -1);
 228         x11_redraw_game(&state, -1);
 229         x11_redraw_icon(&state, shell);
 230
 231         if (!state.timer_tick) {
 232                 XtAppContext app = XtWidgetToApplicationContext(w);
 233                 state.timer_tick = XtAppAddTimeOut(app, TIMER_UPDATE_MS,
 234                                                    timer_tick, &state);
 235         }
 236
 237         game_begin(&state.board);
 238 }
 239
 240 static const XtActionsRec menu_actions[] = {
 241         { "gameNew", proc_new_game },
 242         { "gameExit", proc_exit }
 243 };
 244
 245 static XtAppContext app_initialize(int argc, char **argv)
 246 {
 247         XtAppContext app;
 248         Widget shell;
 249         int i;
 250
 251         if (argc > 0)
 252                 progname = argv[0];
 253
 254         shell = early_setup(&app, argc, argv);
 255         XtAppAddActions(app, (void *)menu_actions, XtNumber(menu_actions));
 256         ui_initialize(&state, shell);
 257         x11_initialize(&state, shell);
 258
 259         XtAddCallback(state.game, XmNinputCallback,  game_input, &state);
 260
 261         /* Begin with the game in winning state */
 262         game_reset(&state.board);
 263         for (i = 0; i < 3; i++)
 264                 state.board.game[i] = state.board.goal[i] << GOAL_SHIFT;
 265         game_finish(&state.board);
 266
 267         state.use_ewmh_icons = ewmh_probe_wm_icon(shell);
 268         XtRealizeWidget(shell);
 269
 270         x11_redraw_icon(&state, shell);
 271
 272         return app;
 273 }
 274
 275 int main(int argc, char **argv)
 276 {
 277         XtAppMainLoop(app_initialize(argc, argv));
 278         return 0;
 279 }