New infrastructure feature. Games are now permitted to be

_conditionally_ able to format the current puzzle as text to be sent
to the clipboard. For instance, if a game were to support playing on
a square grid and on other kinds of grid such as hexagonal, then it
might reasonably feel that only the former could be sensibly
rendered in ASCII art; so it can now arrange for the "Copy" menu
item to be greyed out depending on the game_params.

To do this I've introduced a new backend function
(can_format_as_text_now()), and renamed the existing static backend
field "can_format_as_text" to "can_format_as_text_ever". The latter
will cause compile errors for anyone maintaining a third-party front
end; if any such person is reading this, I apologise to them for the
inconvenience, but I did do it deliberately so that they'd know to
update their front end.

As yet, no checked-in game actually uses this feature; all current
games can still either copy always or copy never.

[originally from svn r8161]

1 files changed, 6 insertions, 1 deletions

diff --git a/loopy.c b/loopy.c
index 10619af..a53e452 100644
--- a/loopy.c
+++ b/loopy.c
@@ -151,6 +151,11 @@ struct game_drawstate {
     char *clue_error;
 };
 
+static int game_can_format_as_text_now(game_params *params)
+{
+    return TRUE;
+}
+
 static char *game_text_format(game_state *state);
 static char *state_to_text(const game_state *state);
 static char *validate_desc(game_params *params, char *desc);
@@ -3821,7 +3826,7 @@ const struct game thegame = {
     dup_game,
     free_game,
     1, solve_game,
-    TRUE, game_text_format,
+    TRUE, game_can_format_as_text_now, game_text_format,
     new_ui,
     free_ui,
     encode_ui,