added notification for picking up card

Scripts/pickup_notification.gd

@@ -0,0 +1,50 @@
+extends PanelContainer
+
+@export var fade_out_time: float
+@export var style: StyleBoxFlat
+@export var text_style: Color
+@export var common_background: Color
+@export var uncommon_background: Color
+@export var rare_background: Color
+@export var epic_background: Color
+@export var legendary_background: Color
+
+var fade_time = 0.0
+var fading = false
+
+
+func _ready() -> void:
+	add_theme_stylebox_override("panel", style)
+	$HBoxContainer/Label.add_theme_color_override("font_color", text_style)
+	$HBoxContainer/Label2.add_theme_color_override("font_color", text_style)
+	$Timer.start()
+
+
+func _process(delta: float) -> void:
+	if fading:
+		fade_time += delta
+		style.bg_color.a = lerp(200.0 / 255.0, 0.0, fade_time / fade_out_time)
+		text_style.a = lerp(220.0 / 255.0, 0.0, fade_time / fade_out_time)
+		$HBoxContainer/Label.add_theme_color_override("font_color", text_style)
+		$HBoxContainer/Label2.add_theme_color_override("font_color", text_style)
+		if fade_time >= fade_out_time:
+			queue_free()
+
+
+func set_card(card: Card) -> void:
+	$HBoxContainer/Label.text = card.display_name
+	match(card.rarity):
+		Data.Rarity.COMMON:
+			style.bg_color = common_background
+		Data.Rarity.UNCOMMON:
+			style.bg_color = uncommon_background
+		Data.Rarity.RARE:
+			style.bg_color = rare_background
+		Data.Rarity.EPIC:
+			style.bg_color = epic_background
+		Data.Rarity.LEGENDARY:
+			style.bg_color = legendary_background
+
+
+func _on_timer_timeout() -> void:
+	fading = true