Add one HP per second regeneration and Half-Life starfield sky

scripts/main.gd

@@ -31,8 +31,13 @@ func _ready() -> void:
 	add_child(player)
 	var envnode := WorldEnvironment.new()
 	var env := Environment.new()
-	env.background_mode = Environment.BG_COLOR
-	env.background_color = Color(0.08, 0.12, 0.19)
+	env.background_mode = Environment.BG_SKY
+	var sky_material := PanoramaSkyMaterial.new()
+	sky_material.panorama = load("res://assets/textures/sky/space_panorama.png")
+	env.sky = Sky.new()
+	env.sky.sky_material = sky_material
+	# Solo sfondo: illuminazione e riflessi non dipendono dal cielo scuro.
+	env.reflected_light_source = Environment.REFLECTION_SOURCE_DISABLED
 	env.ambient_light_source = Environment.AMBIENT_SOURCE_COLOR
 	env.ambient_light_color = Color(0.65, 0.73, 0.85)
 	env.ambient_light_energy = 0.65

scripts/player.gd

@@ -3,7 +3,19 @@ var camera: Camera3D
 var damage_pivot: Node3D
 var damage_feedback: CanvasLayer
 const DamageFeedback = preload("res://scripts/damage_feedback.gd")
-var hp := 100.0
+const MAX_HP := 100.0
+var hp := MAX_HP
+var _regen_elapsed := 0.0
+
+## Discreto: +1 HP per secondo di gioco, mai oltre il massimo o dopo morte.
+func _regenerate_health(dt: float) -> void:
+	if hp <= 0 or death_started or hp >= MAX_HP:
+		_regen_elapsed = 0.0
+		return
+	_regen_elapsed += dt
+	while _regen_elapsed >= 1.0:
+		_regen_elapsed -= 1.0
+		hp = minf(MAX_HP, hp + 1.0)
 var ammo := 30
 var cooldown := 0.0
 var grenade_cooldown := 0.0
@@ -127,6 +139,7 @@ func _physics_process(dt: float) -> void:
 		if Input.is_action_just_pressed("reload"):
 			get_tree().reload_current_scene()     # R o pulsante Ricarica a partita finita
 		return
+	_regenerate_health(dt)
 	_handle_actions()
 	# Deadzone esplicita piccola (0.2): con la 0.5 delle azioni la corsa utile del
 	# joystick touch si dimezzerebbe, mentre per tastiera/joypad nulla cambia.