Add table with finite state machine

Stations/table.gd

@@ -0,0 +1,100 @@
+extends StaticBody3D
+
+@export var initial_thinking_time: float = 8
+@export var initial_primary_time: float = 3
+@export var initial_friend_time: float = 3
+@export var initial_eating_time: float = 3
+
+@onready var label_3d: Label3D = $Label3D
+@onready var label_3d_time: Label3D = $Label3DTime
+@onready var snap_zone: XRToolsSnapZone = $XRToolsSnapZone
+
+const lbl_thinking: String = "Thinking..."
+const lbl_waiting_primary: String = "Waiting for food"
+const lbl_gameover: String = "Game Over!"
+const lbl_eating: String = "Eating..."
+
+### Finite State Machine ####
+
+enum TableState {
+	EMPTY, 			 # Just finished eating or havent eaten yet
+	THINKING,
+	WAITING_PRIMARY, # Inital wait to be served
+	WAITING_FRIEND,  # Waiting for friends food to arrive
+	EATING
+}
+var _state = TableState.EMPTY # use _setState(), never set directly
+var _state_time: float = 0.0
+
+
+func _ready() -> void:
+	if not label_3d:
+		push_error("Table is missing reference to Label3D")
+	if not label_3d_time:
+		push_error("Table is missing reference to Label3DTime")
+	if not snap_zone:
+		push_error("Table is missing reference to XRToolsSnapZone")
+	
+	snap_zone.has_picked_up.connect(_on_object_picked_up)
+	snap_zone.has_dropped.connect(_on_object_dropped)
+	_setState(TableState.EMPTY)
+
+
+func _on_object_picked_up(_item) -> void:
+	print("Table: object picked up: ", _item)
+
+
+func _on_object_dropped() -> void:
+	print("Table: object dropped ")
+	
+
+func place_order() -> void:
+	print("Table: place_order()")
+	label_3d.text = "order!"
+
+
+func _setState(newState: TableState) -> void:
+	print("Table set _state: ", TableState.keys()[newState])
+
+	if newState == TableState.EMPTY:
+		label_3d.text = "empty"
+
+	if newState == TableState.THINKING:
+		_state_time = initial_eating_time
+		label_3d.text = lbl_thinking
+	
+	if newState == TableState.WAITING_PRIMARY:
+		_state_time = initial_primary_time
+		label_3d.text = lbl_waiting_primary
+	
+	if newState == TableState.WAITING_FRIEND:
+		_state_time = initial_friend_time
+	
+	if newState == TableState.EATING:
+		_state_time = initial_eating_time
+		label_3d.text = lbl_eating
+
+	_state = newState
+		
+
+func _process(delta: float) -> void:
+	# Wait for state to finish
+	if _state_time > 0:
+		_state_time -= delta
+		label_3d_time.text = "%.1f" % _state_time
+		return
+	
+	match _state:
+		TableState.EMPTY:
+			_setState(TableState.THINKING)
+		
+		TableState.THINKING:
+			place_order()
+			_setState(TableState.WAITING_PRIMARY)
+		
+		TableState.WAITING_PRIMARY:
+			label_3d.text = lbl_gameover
+		
+		TableState.EATING:
+			_setState(TableState.EMPTY)
+