puzzles: refactor and resync with upstream

This brings puzzles up-to-date with upstream revision
2d333750272c3967cfd5cd3677572cddeaad5932, though certain changes made
by me, including cursor-only Untangle and some compilation fixes
remain. Upstream code has been moved to its separate subdirectory and
future syncs can be done by simply copying over the new sources.

Change-Id: Ia6506ca5f78c3627165ea6791d38db414ace0804

1 files changed, 12 insertions, 0 deletions

diff --git a/apps/plugins/puzzles/src/nullgame.R b/apps/plugins/puzzles/src/nullgame.R
new file mode 100644
index 0000000000..41bdb85d57
--- /dev/null
+++ b/apps/plugins/puzzles/src/nullgame.R
@@ -0,0 +1,12 @@
+# -*- makefile -*-
+
+# The `nullgame' source file is a largely blank one, which contains
+# all the correct function definitions to compile and link, but
+# which defines the null game in which nothing is ever drawn and
+# there are no valid moves. Its main purpose is to act as a
+# template for writing new game definition source files. I include
+# it in the Makefile because it will be worse than useless if it
+# ever fails to compile, so it's important that it should actually
+# be built on a regular basis.
+nullgame : [X] GTK COMMON nullgame nullgame-icon|no-icon
+nullgame : [G] WINDOWS COMMON nullgame nullgame.res|noicon.res