Ajout des mutations Sauveteuse, Adaptative et résistante, ajout des crédits du jeu et d'un splash screen (+ un peu de debug)

entities/plants/scripts/plant_mutation.gd

@@ -18,6 +18,9 @@ func get_icon() -> Texture:
 func get_base_rarity() -> int:
 	return 0
 
+func get_max_rarity() -> int:
+	return MAX_RARITY
+
 @abstract func get_mutation_id() -> String
 
 func get_mutation_name() -> String:
@@ -31,6 +34,9 @@ func mutate_plant_data(_plant_data: PlantData):
 func nullify_score(_plant_data: PlantData) -> bool:
 	return false
 
+func allow_planting_on_decontamined_terrain(_seed : Seed) -> bool:
+	return false
+
 func mutate_score(_plant_data: PlantData, score: int) -> int:
 	return score
 
@@ -61,6 +67,9 @@ func mutate_seed_buff(_plant_data: PlantData, seed_buff : int) -> int:
 func mutate_score_buff(_plant_data: PlantData, score_buff : int) -> int:
 	return score_buff
 
+func mutate_mutation_probability_boost(_plant_data: PlantData, mutation_probability_boost : int) -> float:
+	return mutation_probability_boost
+
 func _start_planted_effect(_plant: Plant):
 	pass
 
@@ -83,7 +92,7 @@ func get_rarity() -> int:
 	return get_base_rarity() + level - 1
 
 func is_max_level() -> bool:
-	return get_base_rarity() + level < MAX_RARITY
+	return get_base_rarity() + level < get_max_rarity()
 
 func card_info() -> CardInfo:
 	var info = CardInfo.new(