Add HUD component and update player state management for lives

scripts/components/player_death.gd

@@ -1,9 +1,14 @@
 class_name PlayerDeathComponent
 extends Node
 
+@onready var gm: GM = $"/root/GameManager"
+
+
 func reset_scene() -> void:
 	get_tree().reload_current_scene()
 
+
 func _on_health_component_on_death() -> void:
 	# todo: play audio on death
+	gm.remove_lives(1)
 	call_deferred("reset_scene")

scripts/game_manager.gd

@@ -2,17 +2,38 @@ class_name GM
 extends Node
 
 var player_state = {
-	"coins": 0,
-}
+					   "coins": 0,
+					   "lives": 3,
+				   }
+
 
 func add_coins(amount: int) -> void:
 	player_state["coins"] += amount
 
+
 func set_coins(amount: int) -> void:
 	player_state["coins"] = amount
 
+
 func get_coins() -> int:
 	return player_state["coins"]
 
+
 func remove_coins(amount: int) -> void:
-	player_state["coins"] -= amount
+	player_state["coins"] -= amount
+
+
+func add_lives(amount: int) -> void:
+	player_state["lives"] += amount
+
+
+func remove_lives(amount: int) -> void:
+	player_state["lives"] -= amount
+
+
+func set_lives(amount: int) -> void:
+	player_state["lives"] = amount
+
+
+func get_lives() -> int:
+	return player_state["lives"]

scripts/hud.gd

@@ -0,0 +1,51 @@
+class_name Hud
+extends Node
+
+@export var player_health: HealthComponent
+@export var coins_label: Label
+@export var health_progressbar: ProgressBar
+@export var lives_label: Label
+
+@onready var game_manager: GM = $"/root/GameManager"
+
+
+func _ready() -> void:
+	if not player_health:
+		var nodes := get_tree().get_nodes_in_group("player")
+		for node in nodes:
+			player_health = node.get_node_or_null("HealthComponent")
+			if player_health:
+				break
+		return
+
+
+func _process(_delta: float) -> void:
+	if not game_manager:
+		return
+
+	set_health_progressbar()
+	set_lives_label()
+	set_coins_label()
+
+
+func set_coins_label() -> void:
+	if not game_manager:
+		return
+
+	#todo: set internationalized text
+	coins_label.text = "Coins: " + str(game_manager.get_coins())
+
+
+func set_lives_label() -> void:
+	if not game_manager:
+		return
+
+	lives_label.text = "Lives: " + str(game_manager.get_lives())
+
+
+func set_health_progressbar() -> void:
+	if not player_health:
+		return
+	
+	health_progressbar.value = player_health.health
+	health_progressbar.max_value = player_health.max_health