Add a request_keys() function with a midend wrapper.

This function gives the front end a way to find out what keys the back
end requires; and as such it is mostly useful for ports without a
keyboard. It is based on changes originally found in Chris Boyle's
Android port, though some modifications were needed to make it more
flexible.

1 files changed, 19 insertions, 0 deletions

diff --git a/filling.c b/filling.c
index 231de4c..db6f95d 100644
--- a/filling.c
+++ b/filling.c
@@ -1287,6 +1287,24 @@ static const char *validate_desc(const game_params *params, const char *desc)
     return (area < sz) ? "Not enough data to fill grid" : NULL;
 }
 
+static key_label *game_request_keys(const game_params *params, int *nkeys)
+{
+    key_label *keys = snewn(11, key_label);
+    *nkeys = 11;
+
+    int i;
+
+    for(i = 0; i < 10; ++i)
+    {
+	keys[i].button = '0' + i;
+	keys[i].label = NULL;
+    }
+    keys[10].button = '\b';
+    keys[10].label = NULL;
+
+    return keys;
+}
+
 static game_state *new_game(midend *me, const game_params *params,
                             const char *desc)
 {
@@ -2125,6 +2143,7 @@ const struct game thegame = {
     free_ui,
     encode_ui,
     decode_ui,
+    game_request_keys,
     game_changed_state,
     interpret_move,
     execute_move,