early platforming level

level!

gui/heart_container.gd

@@ -4,9 +4,114 @@ const heart_full = preload("res://assets/hearts/hud_heart_full.png")
 const heart_empty = preload("res://assets/hearts/hud_heart_empty.png")
 #var heart_half = preload("res://assets/hearts/hud_heart_half.png")
 
-func update_health(current_health : int) -> void:
-	for i in get_child_count():
-		if current_health > i:
-			get_child(i).texture = heart_full
-		else:
-			get_child(i).texture = heart_empty
+const FADE_DURATION := 0.5  # Fade time in seconds
+const FADE_FULL_OPACITY := 1.0
+const FADE_LOW_OPACITY := 0.3
+const SHOW_DURATION := 2.0  # Time to keep the UI visible after health change
+const MAX_HEALTH := 5  # Ensure this matches the Player's MAX_HEALTH
+
+var always_visible_due_to_low_health := false
+var fade_tween: Tween = null
+var scale_tween: Tween = null
+var flash_tween: Tween = null
+var original_position := position
+var is_flashing := false
+var fade_timer := Timer.new()
+
+func _ready() -> void:
+	modulate.a = 0.0
+	add_child(fade_timer)
+	fade_timer.one_shot = true
+
+func update_health(current_health: int) -> void:
+	for i in range(get_child_count()):
+		var child = get_child(i)
+		if child is TextureRect:
+			child.texture = heart_full if current_health > i else heart_empty
+	
+	if current_health == MAX_HEALTH:
+		modulate = Color(1, 1, 1, 1)
+		fade_out()
+	elif current_health == 1:
+		show_ui(true)
+		start_flashing()
+		start_scaling_warning()
+	else:
+		modulate = Color(1, 1, 1, 1)
+		show_ui(false)
+		stop_flashing()
+		stop_scaling_warning()
+		pulse_ui()
+
+func fade_out() -> void:
+	if fade_tween:
+		fade_tween.stop()
+	
+	fade_tween = get_tree().create_tween()
+	fade_tween.tween_property(self, "modulate:a", 0.0, FADE_DURATION)
+	always_visible_due_to_low_health = false
+
+func show_ui(permanent: bool = false) -> void:
+	if fade_tween:
+		fade_tween.stop()
+	modulate.a = FADE_FULL_OPACITY
+	
+	if permanent:
+		always_visible_due_to_low_health = true
+	else:
+		always_visible_due_to_low_health = false
+		fade_timer.start(SHOW_DURATION)
+		fade_timer.timeout.connect(fade_to_low_opacity)
+
+func fade_to_low_opacity() -> void:
+	if not always_visible_due_to_low_health:
+		if fade_tween:
+			fade_tween.stop()
+			
+		fade_tween = get_tree().create_tween()
+		fade_tween.tween_property(self, "modulate:a", FADE_LOW_OPACITY, FADE_DURATION)
+	
+func pulse_ui() -> void:
+	if scale_tween:
+		scale_tween.stop()
+	scale_tween = get_tree().create_tween()
+	scale_tween.tween_property(self, "scale", Vector2(1.2, 1.2), 0.1)
+	scale_tween.tween_property(self, "scale", Vector2(1, 1), 0.1)
+
+func start_flashing() -> void:
+	if is_flashing:
+		return
+	is_flashing = true
+	continue_flashing()
+
+func continue_flashing() -> void:
+	if not is_flashing:
+		return
+	if flash_tween:
+		flash_tween.stop()
+	flash_tween = get_tree().create_tween()
+	flash_tween.tween_property(self, "modulate", Color(1, 0.2, 0.2), 0.1)
+	flash_tween.tween_property(self, "modulate", Color(1, 1, 1), 0.1)
+	flash_tween.finished.connect(continue_flashing)
+
+func stop_flashing() -> void:
+	is_flashing = false
+	if flash_tween:
+		flash_tween.stop()
+
+func start_scaling_warning() -> void:
+	if scale_tween:
+		scale_tween.stop()
+	continue_scaling_warning()
+
+func continue_scaling_warning() -> void:
+	if scale_tween:
+		scale_tween.stop()
+	scale_tween = get_tree().create_tween()
+	scale_tween.tween_property(self, "scale", Vector2(1.2, 1.2), 0.5)
+	scale_tween.tween_property(self, "scale", Vector2(1.0, 1.0), 0.5)
+	scale_tween.finished.connect(continue_scaling_warning)
+
+func stop_scaling_warning() -> void:
+	if scale_tween:
+		scale_tween.stop()