int pressed_mouse_button;
int preferred_tilesize, tilesize, winwidth, winheight;
+
+ void (*game_id_change_notify_function)(void *);
+ void *game_id_change_notify_ctx;
};
#define ensure(me) do { \
} \
} while (0)
+void midend_reset_tilesize(midend *me)
+{
+ me->preferred_tilesize = me->ourgame->preferred_tilesize;
+ {
+ /*
+ * Allow an environment-based override for the default tile
+ * size by defining a variable along the lines of
+ * `NET_TILESIZE=15'.
+ */
+
+ char buf[80], *e;
+ int j, k, ts;
+
+ sprintf(buf, "%s_TILESIZE", me->ourgame->name);
+ for (j = k = 0; buf[j]; j++)
+ if (!isspace((unsigned char)buf[j]))
+ buf[k++] = toupper((unsigned char)buf[j]);
+ buf[k] = '\0';
+ if ((e = getenv(buf)) != NULL && sscanf(e, "%d", &ts) == 1 && ts > 0)
+ me->preferred_tilesize = ts;
+ }
+}
+
midend *midend_new(frontend *fe, const game *ourgame,
const drawing_api *drapi, void *drhandle)
{
me->nstates = me->statesize = me->statepos = 0;
me->states = NULL;
me->params = ourgame->default_params();
+ me->game_id_change_notify_function = NULL;
+ me->game_id_change_notify_ctx = NULL;
+
+ /*
+ * Allow environment-based changing of the default settings by
+ * defining a variable along the lines of `NET_DEFAULT=25x25w'
+ * in which the value is an encoded parameter string.
+ */
+ {
+ char buf[80], *e;
+ int j, k;
+ sprintf(buf, "%s_DEFAULT", me->ourgame->name);
+ for (j = k = 0; buf[j]; j++)
+ if (!isspace((unsigned char)buf[j]))
+ buf[k++] = toupper((unsigned char)buf[j]);
+ buf[k] = '\0';
+ if ((e = getenv(buf)) != NULL)
+ me->ourgame->decode_params(me->params, e);
+ }
me->curparams = NULL;
me->desc = me->privdesc = NULL;
me->seedstr = NULL;
else
me->drawing = NULL;
- me->preferred_tilesize = ourgame->preferred_tilesize;
- {
- /*
- * Allow an environment-based override for the default tile
- * size by defining a variable along the lines of
- * `NET_TILESIZE=15'.
- */
-
- char buf[80], *e;
- int j, k, ts;
-
- sprintf(buf, "%s_TILESIZE", me->ourgame->name);
- for (j = k = 0; buf[j]; j++)
- if (!isspace((unsigned char)buf[j]))
- buf[k++] = toupper((unsigned char)buf[j]);
- buf[k] = '\0';
- if ((e = getenv(buf)) != NULL && sscanf(e, "%d", &ts) == 1 && ts > 0)
- me->preferred_tilesize = ts;
- }
+ midend_reset_tilesize(me);
sfree(randseed);
return me;
}
+const game *midend_which_game(midend *me)
+{
+ return me->ourgame;
+}
+
static void midend_purge_states(midend *me)
{
while (me->nstates > me->statepos) {
void midend_new_game(midend *me)
{
+ midend_stop_anim(me);
midend_free_game(me);
assert(me->nstates == 0);
me->states[0].state);
midend_size_new_drawstate(me);
me->elapsed = 0.0F;
+ me->flash_pos = me->flash_time = 0.0F;
+ me->anim_pos = me->anim_time = 0.0F;
if (me->ui)
me->ourgame->free_ui(me->ui);
me->ui = me->ourgame->new_ui(me->states[0].state);
midend_set_timer(me);
me->pressed_mouse_button = 0;
+
+ if (me->game_id_change_notify_function)
+ me->game_id_change_notify_function(me->game_id_change_notify_ctx);
}
int midend_can_undo(midend *me)
{
game_state *s;
- midend_stop_anim(me);
-
assert(me->statepos >= 1);
if (me->statepos == 1)
return; /* no point doing anything at all! */
me->ourgame->changed_state(me->ui,
me->states[me->statepos-2].state,
me->states[me->statepos-1].state);
- me->anim_time = 0.0;
+ me->flash_pos = me->flash_time = 0.0F;
midend_finish_move(me);
midend_redraw(me);
midend_set_timer(me);
if (!movestr) {
if (button == 'n' || button == 'N' || button == '\x0E') {
- midend_stop_anim(me);
midend_new_game(me);
midend_redraw(me);
goto done; /* never animate */
- } else if (button == 'u' || button == 'u' ||
+ } else if (button == 'u' || button == 'U' ||
button == '\x1A' || button == '\x1F') {
midend_stop_anim(me);
type = me->states[me->statepos-1].movetype;
return me->ourgame->wants_statusbar;
}
+void midend_request_id_changes(midend *me, void (*notify)(void *), void *ctx)
+{
+ me->game_id_change_notify_function = notify;
+ me->game_id_change_notify_ctx = ctx;
+}
+
void midend_supersede_game_desc(midend *me, char *desc, char *privdesc)
{
sfree(me->desc);
sfree(me->privdesc);
me->desc = dupstr(desc);
me->privdesc = privdesc ? dupstr(privdesc) : NULL;
+ if (me->game_id_change_notify_function)
+ me->game_id_change_notify_function(me->game_id_change_notify_ctx);
}
config_item *midend_get_config(midend *me, int which, char **wintitle)
newcurparams = newparams = oldparams1 = oldparams2 = NULL;
if (par) {
- newcurparams = me->ourgame->dup_params(me->params);
+ /*
+ * The params string may underspecify the game parameters, so
+ * we must first initialise newcurparams with a full set of
+ * params from somewhere else before we decode_params the
+ * input string over the top.
+ *
+ * But which set? It depends on what other data we have.
+ *
+ * If we've been given a _descriptive_ game id, then that may
+ * well underspecify by design, e.g. Solo game descriptions
+ * often start just '3x3:' without specifying one of Solo's
+ * difficulty settings, because it isn't necessary once a game
+ * has been generated (and you might not even know it, if
+ * you're manually transcribing a game description). In that
+ * situation, I've always felt that the best thing to set the
+ * difficulty to (for use if the user hits 'New Game' after
+ * pasting in that game id) is whatever it was previously set
+ * to. That is, we use whatever is already in me->params as
+ * the basis for our decoding of this input string.
+ *
+ * A random-seed based game id, however, should use the real,
+ * built-in default params, and not even check the
+ * <game>_DEFAULT environment setting, because when people
+ * paste each other random seeds - whether it's two users
+ * arranging to generate the same game at the same time to
+ * race solving them, or a user sending a bug report upstream
+ * - the whole point is for the random game id to always be
+ * interpreted the same way, even if it does underspecify.
+ *
+ * A parameter string typed in on its own, with no seed _or_
+ * description, gets treated the same way as a random seed,
+ * because again I think the most likely reason for doing that
+ * is to have a portable representation of a set of params.
+ */
+ if (desc) {
+ newcurparams = me->ourgame->dup_params(me->params);
+ } else {
+ newcurparams = me->ourgame->default_params();
+ }
me->ourgame->decode_params(newcurparams, par);
error = me->ourgame->validate_params(newcurparams, desc == NULL);
if (error) {
return ret;
}
+char *midend_get_random_seed(midend *me)
+{
+ char *parstr, *ret;
+
+ if (!me->seedstr)
+ return NULL;
+
+ parstr = me->ourgame->encode_params(me->curparams, TRUE);
+ assert(parstr);
+ ret = snewn(strlen(parstr) + strlen(me->seedstr) + 2, char);
+ sprintf(ret, "%s#%s", parstr, me->seedstr);
+ sfree(parstr);
+ return ret;
+}
+
char *midend_set_config(midend *me, int which, config_item *cfg)
{
char *error;
me->anim_time = 0.0;
midend_finish_move(me);
}
- midend_redraw(me);
+ if (me->drawing)
+ midend_redraw(me);
midend_set_timer(me);
return NULL;
}
+int midend_status(midend *me)
+{
+ /*
+ * We should probably never be called when the state stack has no
+ * states on it at all - ideally, midends should never be left in
+ * that state for long enough to get put down and forgotten about.
+ * But if we are, I think we return _true_ - pedantically speaking
+ * a midend in that state is 'vacuously solved', and more
+ * practically, a user whose midend has been left in that state
+ * probably _does_ want the 'new game' option to be prominent.
+ */
+ if (me->statepos == 0)
+ return +1;
+
+ return me->ourgame->status(me->states[me->statepos-1].state);
+}
+
char *midend_rewrite_statusbar(midend *me, char *text)
{
/*
return ret;
}
+/*
+ * This function examines a saved game file just far enough to
+ * determine which game type it contains. It returns NULL on success
+ * and the game name string in 'name' (which will be dynamically
+ * allocated and should be caller-freed), or an error message on
+ * failure.
+ */
+char *identify_game(char **name, int (*read)(void *ctx, void *buf, int len),
+ void *rctx)
+{
+ int nstates = 0, statepos = -1, gotstates = 0;
+ int started = FALSE;
+
+ char *val = NULL;
+ /* Initially all errors give the same report */
+ char *ret = "Data does not appear to be a saved game file";
+
+ *name = NULL;
+
+ /*
+ * Loop round and round reading one key/value pair at a time from
+ * the serialised stream, until we've found the game name.
+ */
+ while (nstates <= 0 || statepos < 0 || gotstates < nstates-1) {
+ char key[9], c;
+ int len;
+
+ do {
+ if (!read(rctx, key, 1)) {
+ /* unexpected EOF */
+ goto cleanup;
+ }
+ } while (key[0] == '\r' || key[0] == '\n');
+
+ if (!read(rctx, key+1, 8)) {
+ /* unexpected EOF */
+ goto cleanup;
+ }
+
+ if (key[8] != ':') {
+ if (started)
+ ret = "Data was incorrectly formatted for a saved game file";
+ goto cleanup;
+ }
+ len = strcspn(key, ": ");
+ assert(len <= 8);
+ key[len] = '\0';
+
+ len = 0;
+ while (1) {
+ if (!read(rctx, &c, 1)) {
+ /* unexpected EOF */
+ goto cleanup;
+ }
+
+ if (c == ':') {
+ break;
+ } else if (c >= '0' && c <= '9') {
+ len = (len * 10) + (c - '0');
+ } else {
+ if (started)
+ ret = "Data was incorrectly formatted for a"
+ " saved game file";
+ goto cleanup;
+ }
+ }
+
+ val = snewn(len+1, char);
+ if (!read(rctx, val, len)) {
+ if (started)
+ goto cleanup;
+ }
+ val[len] = '\0';
+
+ if (!started) {
+ if (strcmp(key, "SAVEFILE") || strcmp(val, SERIALISE_MAGIC)) {
+ /* ret already has the right message in it */
+ goto cleanup;
+ }
+ /* Now most errors are this one, unless otherwise specified */
+ ret = "Saved data ended unexpectedly";
+ started = TRUE;
+ } else {
+ if (!strcmp(key, "VERSION")) {
+ if (strcmp(val, SERIALISE_VERSION)) {
+ ret = "Cannot handle this version of the saved game"
+ " file format";
+ goto cleanup;
+ }
+ } else if (!strcmp(key, "GAME")) {
+ *name = dupstr(val);
+ ret = NULL;
+ goto cleanup;
+ }
+ }
+
+ sfree(val);
+ val = NULL;
+ }
+
+ cleanup:
+ sfree(val);
+ return ret;
+}
+
char *midend_print_puzzle(midend *me, document *doc, int with_soln)
{
game_state *soln = NULL;
~ian / sgt-puzzles.git / blobdiff