The new SFMLGui is now worked into the code and barely works. Cleanup is next.

meson.build

@@ -34,6 +34,7 @@ executable('escape_turings_tarpit',
     'gui.cpp',
     'watcher.cpp',
     'builder.cpp',
+    'sfmlgui.cpp',
     'escape_turings_tarpit.cpp'],
   dependencies: dependencies)
 
@@ -52,15 +53,10 @@ executable('audiotest', 'audiotest.cpp',
 executable('jsontest', 'jsontest.cpp',
   dependencies: dependencies)
 
-executable('sfmltest', [
-    'sfmltest.cpp',
-    'sfmlgui.cpp',
-  ],
-  dependencies: dependencies)
-
 runtests = executable('runtests', [
   'game_engine.cpp',
-  'tests/game_engine.cpp'],
+  'tests/game_engine.cpp',
+  ],
   dependencies: dependencies + [catch2])
 
 test('the tests', runtests)