Add DayController and QueueController to handle spawning of customer through out a day

Scenes/day_controller.gd

@@ -0,0 +1,57 @@
+class_name DayController
+extends Node
+
+# DayController Emits singals to spawn customers.
+
+var day_time_remaining: float = 0.0
+var customers_spawned: int = 0
+var customers_served: int = 0
+
+
+func _ready() -> void:
+	GameManager.game_state = GameManager.GameState.BUILDING
+	Signals.game_state_changed.connect(_on_game_state_changed)
+
+
+func _on_game_state_changed(new_state: GameManager.GameState) -> void:
+	if new_state == GameManager.GameState.RUNNING:
+		start_next_day()
+	
+
+# Returns 0-1 progress of the day time
+func get_day_progression() -> float:
+	return 1 - (day_time_remaining / GameManager.day_length_seconds)
+
+
+func _reset_values() -> void:
+	day_time_remaining = GameManager.day_length_seconds
+	customers_spawned = 0
+	customers_served = 0
+
+
+func start_next_day() -> void:
+	print("DayController: start_next_day")
+	_reset_values()
+	GameManager.customers_per_day += GameManager.customers_count_increase_per_day
+	GameManager.day_number += 1
+	
+	
+func finish_current_day() -> void:
+	print("DayController: finish_current_day")
+	_reset_values()
+
+
+func _process(delta: float) -> void:
+	if GameManager.game_state != GameManager.GameState.RUNNING:
+		return
+	day_time_remaining -= delta
+	var customers_at_this_time = GameManager.customers_per_day  * get_day_progression()
+	#print("DayController: customers_at_this_time: ", customers_at_this_time)
+	if customers_spawned < customers_at_this_time:
+		customers_spawned += 1
+		print("DayController: spawning customer")
+		Signals.request_customer_spawn.emit()
+	# If day complete
+	if GameManager.customers_per_day == customers_served and customers_spawned == GameManager.customers_per_day:
+		print("DayController: Day complete")
+		finish_current_day()