Update backend Pokemon

src/main/scala/PokemonGame.scala

 import Engine.Game
 
+import Scene.Battle.{Battle, BattleScene}
+
 import Pokemon.{PokemonFactory, Trainer}
 
 val trainer = Trainer("", List(PokemonFactory("Bulbasaur"), PokemonFactory("Squirtle")), 0)
 val trainerEnemy = Trainer("", List(PokemonFactory("Charmander")), 0)
 
-class PokemonGame() extends Game(Scene.Battle.BattleScene(trainer, trainerEnemy))
+class PokemonGame() extends Game(BattleScene(Battle(trainer, trainerEnemy)));

src/main/scala/pokemon/Trainer.scala

@@ -5,8 +5,8 @@ class Trainer(val name: String, var listPokemon: List[Pokemon], var indexPrimary
     def numberPokemon: Int =
         this.listPokemon.length
 
-    def primaryPokemon: Option[Pokemon] =
-        this.listPokemon.lift(this.indexPrimaryPokemon)
+    def primaryPokemon: Pokemon =
+        this.listPokemon.lift(this.indexPrimaryPokemon).get
 
     def changePrimaryPokemon(index: Int): Unit =
         assert(0 <= index && index < this.numberPokemon, "This Pokemon doesn't exists.")