Bee State Machine

entities/Bee.tscn

@@ -1,3 +1,48 @@
-[gd_scene format=3 uid="uid://deek6uv574xas"]
+[gd_scene load_steps=8 format=3 uid="uid://deek6uv574xas"]
 
-[node name="Bee" type="Node2D"]
+[ext_resource type="Script" path="res://entities/scripts/bee.gd" id="1_pnu7x"]
+[ext_resource type="Script" path="res://entities/scripts/finite_state_machine.gd" id="1_t3s5d"]
+[ext_resource type="Script" path="res://entities/bee/states/bee_idle.gd" id="3_vasc5"]
+[ext_resource type="Script" path="res://entities/bee/states/bee_traveling.gd" id="4_rr0w6"]
+[ext_resource type="Script" path="res://entities/bee/states/bee_gather.gd" id="5_4vs4l"]
+[ext_resource type="Script" path="res://entities/scripts/bee_hit_box.gd" id="5_agq38"]
+
+[sub_resource type="CircleShape2D" id="CircleShape2D_86nxf"]
+radius = 22.0907
+
+[node name="Bee" type="CharacterBody2D"]
+collision_mask = 0
+script = ExtResource("1_pnu7x")
+
+[node name="CollisionShape2D" type="CollisionShape2D" parent="."]
+light_mask = 0
+shape = SubResource("CircleShape2D_86nxf")
+
+[node name="HitBox" type="Area2D" parent="."]
+collision_layer = 6
+collision_mask = 7
+script = ExtResource("5_agq38")
+
+[node name="CollisionShape2D" type="CollisionShape2D" parent="HitBox"]
+light_mask = 0
+shape = SubResource("CircleShape2D_86nxf")
+
+[node name="StateMachine" type="Node2D" parent="." node_paths=PackedStringArray("initial_state")]
+script = ExtResource("1_t3s5d")
+initial_state = NodePath("Idle")
+
+[node name="Idle" type="Node" parent="StateMachine"]
+script = ExtResource("3_vasc5")
+
+[node name="Traveling" type="Node" parent="StateMachine"]
+script = ExtResource("4_rr0w6")
+
+[node name="Gathering" type="Node" parent="StateMachine"]
+script = ExtResource("5_4vs4l")
+
+[node name="Polygon2D" type="Polygon2D" parent="."]
+color = Color(1, 1, 0.0745098, 1)
+polygon = PackedVector2Array(-18, -11, -6, -21, 17, -19, 23, 1, 3, 12, -18, 7)
+
+[connection signal="area_entered" from="HitBox" to="HitBox" method="_on_area_entered"]
+[connection signal="area_exited" from="HitBox" to="HitBox" method="_on_area_exited"]

entities/DirectorDrone.tscn

@@ -1,8 +1,19 @@
-[gd_scene format=3 uid="uid://nxq2fd04ehcu"]
+[gd_scene load_steps=2 format=3 uid="uid://nxq2fd04ehcu"]
+
+[ext_resource type="Script" path="res://entities/scripts/director_drone.gd" id="1_3v6jp"]
 
 [node name="DirectorDrone" type="Node2D"]
+script = ExtResource("1_3v6jp")
 
 [node name="Polygon2D" type="Polygon2D" parent="."]
 position = Vector2(1, -1)
 color = Color(0.703926, 0.656042, 0.441124, 1)
 polygon = PackedVector2Array(-28, -25, 25, -28, 26, 33, -32, 19)
+
+[node name="Label" type="Label" parent="."]
+offset_left = -16.0
+offset_top = -12.0
+offset_right = 24.0
+offset_bottom = 11.0
+theme_override_colors/font_color = Color(0, 0, 0, 1)
+text = "999"

entities/bee/states/bee_gather.gd

@@ -0,0 +1,29 @@
+extends State
+class_name BeeGathering
+
+@export var animator : AnimationPlayer
+@onready var bee = get_parent().get_parent() as Bee # I think this is bad but I dont care it works
+
+var time_at_patch : float = 0.0
+
+func enter(_msg := {}):
+	Log.pr("I am going to attempt to gather some stuff!")
+	#animator.play("Idle")
+
+	#if !bee.in_range_of_flowers:
+	#	## Go home bee, you're drunk
+	#	state_transition.emit(self, "Idle")
+	
+
+
+func update(_delta : float):	
+
+	if bee.in_range_of_flowers:
+		#animator.play("Gathering")
+		time_at_patch += _delta
+		if time_at_patch > 5.0:
+			bee.nectar += 1
+			state_transition.emit(self, "Idle")
+	else:
+		state_transition.emit(self, "Idle")
+

entities/bee/states/bee_idle.gd

@@ -0,0 +1,37 @@
+extends State
+class_name BeeIdle
+
+@export var animator : AnimationPlayer
+
+@onready var bee = get_parent().get_parent() # I think this is bad but I dont care it works
+
+var idle_time : float = 0.0
+
+func _ready():
+	Log.pr(bee, bee.nectar)
+
+func enter(_msg := {}):
+	Log.pr("I sit by idl-bee")
+	#animator.play("Idle")
+	pass
+	
+func update(delta : float):
+
+	idle_time += delta
+
+	if idle_time > 2.0:
+		Log.pr("Been idle for 2 seconds, check for something to do...")
+		find_something_to_do()
+		idle_time = 0.0
+	pass
+
+func find_something_to_do():
+	if bee.nectar > 0:
+		## Bee has pollen - head home
+		Log.pr(bee, "I have nectar, I should return to the hive")
+		state_transition.emit(self, "Traveling")
+	else:
+		## Bee has no pollen - they should move to a flower
+		Log.pr(bee, "I have no nectar, I should find a flower")
+		state_transition.emit(self, "Traveling")
+	pass

entities/bee/states/bee_traveling.gd

@@ -0,0 +1,37 @@
+extends State
+class_name BeeTraveling
+
+@export var animator : AnimationPlayer
+
+@export var target : Drone = null
+
+@onready var bee = get_parent().get_parent() as Bee # I think this is bad but I dont care it works
+
+var t = 0
+
+func enter(_msg := {}):
+	Log.pr("I am on the move!")
+	## Get the next target location from the bee 
+	target = bee.get_next_target()
+
+	#animator.play("Idle")
+	
+	pass
+	
+func update(delta : float):
+
+	if target:
+		if bee.position.distance_to(target.position) > 3:
+
+			bee.velocity = (target.get_global_position() - bee.position).normalized() * bee.speed * delta
+			bee.move_and_collide(bee.velocity)
+			bee.look_at(target.position)
+
+		else:
+			# Bee has arrived at location, if its the hive or a collector drone do the things 
+			if(target.name == "CollectorDrone"):
+				state_transition.emit(self, "Gathering")
+			else: 
+				state_transition.emit(self, "Idle")
+	
+	pass

entities/scripts/bee.gd

@@ -0,0 +1,55 @@
+extends Node2D
+class_name Bee
+
+@onready var fsm = $StateMachine as FiniteStateMachine
+@onready var drone_manager = get_tree().get_first_node_in_group("dronemanager") as DroneManager
+
+@export var nectar : int = 0
+@export var speed : int = 30
+
+var latest_target_director : int = 0
+
+# This is updated when the bee enters or exits a flower patch 
+var in_range_of_flowers : bool = false 
+
+func _ready():
+	Log.pr("I have never bee-n so ready!")
+
+	Log.pr(fsm.current_state.name)
+
+## Get the next target to move to
+## If we have no nectar, we need to go up the director list 
+## If we have nectar, we need to go down the director list 
+## If we are at the lower director, we need to go the hive 
+## If we are at the highest director, we need to go to a flower
+func get_next_target():
+	if nectar == 0:
+		Log.pr("I have no nectar")
+		
+		## If there is a next directory drone, lets go to it
+		var next_drone = drone_manager.get_next_director(latest_target_director)
+		if next_drone:
+			Log.pr("Next drone target", next_drone)
+			latest_target_director = next_drone.visit_order
+			return next_drone
+
+		## If there is no next drone, check for a collector drone 
+		var collector_drone = drone_manager.get_collector()
+		if collector_drone:
+			Log.pr("Collector drone target", collector_drone)
+			return collector_drone
+	else:
+		Log.pr("I have nectar")
+
+		## Let's go home, we need the previous director drones location 
+		var previous_drone = drone_manager.get_previous_director(latest_target_director)
+		if previous_drone:
+			Log.pr("Previous drone target", previous_drone)
+			latest_target_director = previous_drone.visit_order
+			return previous_drone
+
+		pass
+
+
+
+

entities/scripts/bee_hit_box.gd

@@ -0,0 +1,19 @@
+extends Area2D
+
+@onready var bee = get_parent() as Bee
+
+func _ready():
+	pass
+
+
+func _on_area_entered(area:Area2D):
+	## Check if the area entered is a flower patch
+	if area.is_in_group("flowers"):
+		bee.in_range_of_flowers = true
+		Log.pr("I found some flowers!")
+		
+func _on_area_exited(area:Area2D):
+	## Check if the area exited is a flower patch
+	if area.is_in_group("flowers"):
+		bee.in_range_of_flowers = false
+		Log.pr("I left the flowers!")

entities/scripts/director_drone.gd

@@ -1,11 +1,17 @@
 class_name DirectorDrone extends Drone
 
+@export var visit_order : int = 0 :
+	get:
+		return visit_order
+	set(value): 
+		visit_order = value
+		update_label_value()
 
-# Called when the node enters the scene tree for the first time.
 func _ready():
-	pass # Replace with function body.
+	pass
 
-
-# Called every frame. 'delta' is the elapsed time since the previous frame.
 func _process(_delta):
 	pass
+
+func update_label_value():
+	$Label.text = str(visit_order)

entities/scripts/finite_state_machine.gd

@@ -0,0 +1,69 @@
+@icon("res://resources/icons/fsm.png")
+extends Node
+class_name FiniteStateMachine
+
+var states : Dictionary = {}
+var current_state : State
+@export var initial_state : State
+
+#NOTE This is a generic finite_state_machine, it handles all states, changes to this code will affect
+	# everything that uses a state machine!
+
+func _ready():
+	Log.pr("FSM Ready")
+	for child in get_children():
+		if child is State:
+			states[child.name.to_lower()] = child
+			child.state_transition.connect(change_state)
+
+	Log.pr(states)
+
+	if initial_state:
+		initial_state.enter()
+		current_state = initial_state
+
+# Call the current states update function
+func _process(delta):
+	if current_state:
+		current_state.update(delta)
+
+# Use force_change_state cautiously, it immediately switches to a state regardless of any transitions.
+# This is used to force us into a 'death state' when killed
+func force_change_state(new_state : String):
+	var newState = states.get(new_state.to_lower())
+	
+	if !newState:
+		print(new_state + " does not exist in the dictionary of states")
+		return
+	
+	if current_state == newState:
+		print("State is same, aborting")
+		return
+		
+	# NOTE Calling exit like so: (current_state.Exit()) may cause warnings when flushing queries, like when the enemy is being removed after death. 
+	# call_deferred is safe and prevents this from occuring. We get the Exit function from the state as a callable and then call it in a thread-safe manner
+	if current_state:
+		var exit_callable = Callable(current_state, "exit")
+		exit_callable.call_deferred()
+	
+	newState.enter()
+	
+	current_state = newState
+	
+func change_state(source_state : State, new_state_name : String):
+	if source_state != current_state:
+		#print("Invalid change_state trying from: " + source_state.name + " but currently in: " + current_state.name)
+		#This typically only happens when trying to switch from death state following a force_change
+		return
+	
+	var new_state = states.get(new_state_name.to_lower())
+	if !new_state:
+		print("New state is empty")
+		return
+		
+	if current_state:
+		current_state.exit()
+		
+	new_state.enter()
+	
+	current_state = new_state

entities/scripts/state.gd

@@ -0,0 +1,15 @@
+@icon("res://resources/icons/fsm.png")
+extends Node
+class_name State
+
+signal state_transition
+
+func enter(_msg := {}):
+	pass
+	
+func exit():
+	pass
+	
+func update(_delta:float):
+	pass
+