Support for saving games in Javascript puzzles.

This is done by getting midend_serialise to produce the complete
saved-game file as an in-memory string buffer, and then encoding that
into a data: URI which we provide to the user as a hyperlink in a
dialog box. The hyperlink has the 'download' attribute, which means
clicking on it should automatically offer to save the file, and also
lets me specify a not-too-silly default file name.

1 files changed, 3 insertions, 0 deletions

diff --git a/emccx.json b/emccx.json
index e03f7e2..25d08fe 100644
--- a/emccx.json
+++ b/emccx.json
@@ -18,6 +18,9 @@
     '_timer_callback',
     // Callback from button presses in the UI outside the canvas
     '_command',
+    // Game-saving functions
+    '_get_save_file',
+    '_free_save_file',
     // Callbacks to return values from dialog boxes
     '_dlg_return_sval',
     '_dlg_return_ival',