int pressed_mouse_button;
- int winwidth, winheight;
+ int tilesize, winwidth, winheight;
};
#define ensure(me) do { \
me->laststatus = NULL;
me->timing = FALSE;
me->elapsed = 0.0F;
- me->winwidth = me->winheight = 0;
+ me->tilesize = me->winwidth = me->winheight = 0;
sfree(randseed);
sfree(me);
}
+static void midend_size_new_drawstate(midend_data *me)
+{
+ /*
+ * Don't even bother, if we haven't worked out our tile size
+ * anyway yet.
+ */
+ if (me->tilesize > 0) {
+ me->ourgame->compute_size(me->params, me->tilesize,
+ &me->winwidth, &me->winheight);
+ me->ourgame->set_size(me->drawstate, me->params, me->tilesize);
+ }
+}
+
void midend_size(midend_data *me, int *x, int *y, int expand)
{
- me->ourgame->size(me->params, me->drawstate, x, y, expand);
- me->winwidth = *x;
- me->winheight = *y;
+ int min, max;
+ int rx, ry;
+
+ /*
+ * Find the tile size that best fits within the given space. If
+ * `expand' is TRUE, we must actually find the _largest_ such
+ * tile size; otherwise, we bound above at the game's preferred
+ * tile size.
+ */
+ if (expand) {
+ max = 1;
+ do {
+ max *= 2;
+ me->ourgame->compute_size(me->params, max, &rx, &ry);
+ } while (rx <= *x && ry <= *y);
+ } else
+ max = me->ourgame->preferred_tilesize + 1;
+ min = 1;
+
+ /*
+ * Now binary-search between min and max. We're looking for a
+ * boundary rather than a value: the point at which tile sizes
+ * stop fitting within the given dimensions. Thus, we stop when
+ * max and min differ by exactly 1.
+ */
+ while (max - min > 1) {
+ int mid = (max + min) / 2;
+ me->ourgame->compute_size(me->params, mid, &rx, &ry);
+ if (rx <= *x && ry <= *y)
+ min = mid;
+ else
+ max = mid;
+ }
+
+ /*
+ * Now `min' is a valid size, and `max' isn't. So use `min'.
+ */
+
+ me->tilesize = min;
+ midend_size_new_drawstate(me);
+ *x = me->winwidth;
+ *y = me->winheight;
}
void midend_set_params(midend_data *me, game_params *params)
deactivate_timer(me->frontend);
}
-static void midend_size_new_drawstate(midend_data *me)
-{
- me->ourgame->size(me->params, me->drawstate, &me->winwidth, &me->winheight,
- TRUE);
-}
-
void midend_force_redraw(midend_data *me)
{
if (me->drawstate)