Add battle stuff

battle/Battle.gd

@@ -1,5 +1,5 @@
 class_name BattleSingleton extends Node
-const BattleCutsceneAction = preload("res://battle/cutscene/BattleCutsceneAction.gd")
+const BattleCutsceneAction = preload("res://cutscene/battle/BattleCutsceneAction.gd")
 
 enum BattlePosition {
   LEFT_TOP_BACK,
@@ -34,7 +34,10 @@ func startBattle(params) -> void:
   assert(!active)
 
   # Get the cutscene (or create a default one).
-  battleCutscene = params.get('cutscene', Cutscene.new())
+  if params.has('cutscene'):
+    battleCutscene = params['cutscene']
+  else:
+    battleCutscene = Cutscene.new()
 
   # Update fighters for each fighter scene.
   for pos in BattlePosition.values():