add fog and effects

core/daynight/environment_manager.gd

@@ -45,20 +45,26 @@ func _ready() -> void:
 		add_child(weather_controller)
 
 func select_day_time(normalized_time: float) -> void:
-	# Convert 0.0-1.0 normalized time to range used by atmosphere lerps
-	# morning (dawn→noon) = 1.0-2.0, afternoon/night (noon→midnight) = 2.0-3.0
-	if normalized_time < 0.5:
-		# 0.0→0.5 maps to 1.0→2.0 (morning to afternoon)
-		day_time = 1.0 + (normalized_time / 0.5)
+	# 0.0→0.25  = alba:       day_time 1.0→2.0 (night colors → morning colors)
+	# 0.25→0.5  = giorno:     day_time 2.0→2.0 (stays morning/afternoon)
+	# 0.5→0.75  = tramonto:   day_time 2.0→3.0 (afternoon colors → night colors)
+	# 0.75→1.0  = notte:      day_time 3.0→3.0 (stays night)
+	# At wrap 1.0→0.0:        day_time stays 3.0, then fades back via alba
+	
+	if normalized_time < 0.25:
+		# Alba: notte → mattina
+		day_time = 3.0 - (normalized_time / 0.25) * 2.0  # 3.0 → 1.0
+	elif normalized_time < 0.5:
+		# Giorno pieno
+		var t: float = (normalized_time - 0.25) / 0.25
+		day_time = 1.0 + t  # 1.0 → 2.0
+	elif normalized_time < 0.75:
+		# Tramonto: pomeriggio → notte
+		var t: float = (normalized_time - 0.5) / 0.25
+		day_time = 2.0 + t  # 2.0 → 3.0
 	else:
-		# 0.5→1.0 maps to 2.0→3.0 (afternoon to night)
-		day_time = 2.0 + ((normalized_time - 0.5) / 0.5)
-
-	if day_tween and day_tween.is_valid():
-		day_tween.kill()
-	day_tween = create_tween()
-	day_tween.set_trans(Tween.TRANS_SINE).set_ease(Tween.EASE_IN_OUT)
-	day_tween.tween_property(self, "day_time", day_time, 3.0)
+		# Notte piena
+		day_time = 3.0
 	
 	if weather_controller:
 		weather_controller.day_time = day_time