added selling cards and made shop items cheaper

Scenes/Menus/GameEndScreen/game_end_screen.gd

@@ -0,0 +1,45 @@
+class_name GameEndScreen extends PanelContainer
+
+@export var box: PackedScene
+
+@export var outcome_label: Label
+@export var winrate_label: Label
+@export var total_games_label: Label
+@export var total_wins_label: Label
+@export var total_losses_label: Label
+@export var undefeated_enemies: VBoxContainer
+
+
+func _ready() -> void:
+	var wins: int = Data.save_stats.twenty_game_history.count(true)
+	var games: int = Data.save_stats.twenty_game_history.size()
+	var winrate: int = int((float(wins) / float(games)) * 100.0)
+	winrate_label.text = "Your 20-game winrate is now: " + str(winrate) + "%!"
+	total_games_label.text = "Total games: " + str(Data.save_stats.wins + Data.save_stats.losses)
+	total_wins_label.text = "Total wins: " + str(Data.save_stats.wins)
+	total_losses_label.text = "Total losses: " + str(Data.save_stats.losses)
+	for wave_key: int in Game.stats.enemies_undefeated:
+		var spawned_box: EnemyBox = box.instantiate() as EnemyBox
+		undefeated_enemies.add_child(spawned_box)
+		spawned_box.set_wave(wave_key)
+		for enemy_key: Enemy in Game.stats.enemies_undefeated[wave_key]:
+			spawned_box.add_enemy_tag(enemy_key, Game.stats.enemies_undefeated[wave_key][enemy_key])
+
+
+func set_outcome_message(message: String) -> void:
+	outcome_label.text = message
+
+
+func _on_quit_button_pressed() -> void:
+	Game.scene_switch_main_menu()
+	queue_free()
+
+
+func _on_play_button_pressed() -> void:
+	Game.setup()
+	Game.start()
+	queue_free()
+
+
+func _on_button_mouse_entered() -> void:
+	$AudioStreamPlayer.play()