Fully converted to using the lel-guecs library externally now.

meson.build

@@ -68,13 +68,14 @@ sfml_graphics = subproject('sfml').get_variable('sfml_graphics_dep')
 sfml_network = subproject('sfml').get_variable('sfml_network_dep')
 sfml_system = subproject('sfml').get_variable('sfml_system_dep')
 sfml_window = subproject('sfml').get_variable('sfml_window_dep')
+lel_guecs = subproject('lel-guecs').get_variable('lel_guecs_dep')
 
 dependencies += [
   fmt, json, freetype2,
   flac, ogg, vorbis, vorbisfile, vorbisenc,
   sfml_audio, sfml_graphics,
   sfml_network, sfml_system,
-  sfml_window
+  sfml_window, lel_guecs
 ]
 
 sources = [
@@ -83,6 +84,7 @@ sources = [
   'animation.cpp',
   'animation.cpp',
   'autowalker.cpp',
+  'backend.cpp',
   'battle.cpp',
   'boss_fight_ui.cpp',
   'camera.cpp',
@@ -94,11 +96,9 @@ sources = [
   'debug_ui.cpp',
   'devices.cpp',
   'goap.cpp',
-  'guecs.cpp',
   'guecstra.cpp',
   'gui_fsm.cpp',
   'inventory.cpp',
-  'lel.cpp',
   'levelmanager.cpp',
   'lights.cpp',
   'main_ui.cpp',
@@ -137,7 +137,6 @@ executable('runtests', sources + [
   'tests/dinkyecs.cpp',
   'tests/easings.cpp',
   'tests/fsm.cpp',
-  'tests/guecs.cpp',
   'tests/inventory.cpp',
   'tests/lel.cpp',
   'tests/levelmanager.cpp',