Added job component and queue system

- Introduced a new JobComponent and JobQueue to manage jobs in the game.
- Created two new jobs: DigJob and InfectJob with their respective scripts.
- Updated CrystalGlowComponent, FreeCameraComponent, MushroomGlowComponent, WaterEffectComponent to improve logging messages.
- Adjusted camera movement limits in FreeCameraGameCameraComponent for better control.
- Added FiniteStateMachine class for managing states of entities.
- Implemented GlowingIdle state as an example of using the state machine.
- Included a utility function to fetch file paths by extension from a directory.

entities/glowing.tscn

@@ -1,7 +1,9 @@
-[gd_scene load_steps=5 format=3 uid="uid://ddwnkcnncxmjv"]
+[gd_scene load_steps=7 format=3 uid="uid://ddwnkcnncxmjv"]
 
 [ext_resource type="Script" path="res://entities/scripts/glowling.gd" id="1_aq1kk"]
 [ext_resource type="Texture2D" uid="uid://b0v24ggq57237" path="res://resources/particles/smallcircle.png" id="2_s3xbi"]
+[ext_resource type="Script" path="res://entities/scripts/finite_state_machine.gd" id="3_vqtdm"]
+[ext_resource type="Script" path="res://entities/states/glowling/glowling_idle.gd" id="4_2l3e6"]
 
 [sub_resource type="Animation" id="Animation_01nc3"]
 resource_name = "GlowingPulse"
@@ -63,3 +65,10 @@ energy = 0.7
 shadow_filter = 2
 shadow_filter_smooth = 7.5
 texture = ExtResource("2_s3xbi")
+
+[node name="StateMachine" type="Node" parent="." node_paths=PackedStringArray("initial_state")]
+script = ExtResource("3_vqtdm")
+initial_state = NodePath("Idle")
+
+[node name="Idle" type="Node" parent="StateMachine"]
+script = ExtResource("4_2l3e6")

entities/scripts/finite_state_machine.gd

@@ -0,0 +1,75 @@
+@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() -> void:
+	for child : State in get_children():
+		states[child.name.to_lower()] = child
+		child.state_transition.connect(change_state)
+
+	if initial_state:
+		initial_state.enter()
+		current_state = initial_state
+
+# Call the current states update function
+func _process(delta : float) -> void:
+	if current_state:
+		current_state.update(delta)
+
+func _physics_process(delta : float) -> void:
+	if current_state:
+		current_state.physics_update(delta)
+
+func get_current_state_name() -> String:
+	if current_state:
+		return current_state.name.to_lower()
+	else:
+		return ""
+
+# 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) -> void:
+	var newState : State = 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 = Callable(current_state, "exit")
+		exit_callable.call_deferred()
+	
+	newState.enter()
+	
+	current_state = newState
+	
+func change_state(source_state : State, new_state_name : String) -> void:
+	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 : 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/mushroom_glow.gd

@@ -8,12 +8,9 @@ class_name MushroomGlow
 @export var colour_name : String = "blue"
 
 func _ready() -> void:
-	Log.pr("And dog said let their be light...")
-	Log.pr(position, global_position)
 	set_light_colour(colour_name)
 	animation.play("GlowFlicker")
 
-
 func set_light_colour(colour : String) -> void:
 	if colour == "blue":
 		inner_glow.color = "4cc5fa"

entities/scripts/state.gd

@@ -0,0 +1,18 @@
+@icon("res://resources/icons/fsm.png")
+extends Node
+class_name State
+
+signal state_transition
+
+func enter(_msg : Dictionary = {}) -> void:
+	pass
+	
+func exit() -> void :
+	pass
+	
+func update(_delta : float) -> void:
+	pass
+
+func physics_update(_delate : float) -> void:
+	pass
+	

entities/states/glowling/glowling_idle.gd

@@ -0,0 +1,5 @@
+extends State
+class_name GlowingIdle
+
+func enter(_msg : Dictionary = {}) -> void:
+	Log.pr("I am a glowling and I am idle...")