feat(#2): Add the ability to move the vehicle up, down, left, right, forwards, backwards using the keyboard

Game/scripts/Vehicle.gd

@@ -0,0 +1,31 @@
+extends RigidBody3D
+
+var speed = 10.0  # Adjust the speed as necessary
+
+func _integrate_forces(state):
+	var input_vector = Vector3.ZERO
+	if Input.is_action_pressed("move_forward"):
+		input_vector.z -= 1
+	if Input.is_action_pressed("move_backward"):
+		input_vector.z += 1
+	if Input.is_action_pressed("move_left"):
+		input_vector.x -= 1
+	if Input.is_action_pressed("move_right"):
+		input_vector.x += 1
+	if Input.is_action_pressed("move_up"):
+		input_vector.y += 1
+	if Input.is_action_pressed("move_down"):
+		input_vector.y -= 1
+
+	input_vector = input_vector.normalized() * speed
+	state.linear_velocity = input_vector
+
+
+# Called when the node enters the scene tree for the first time.
+func _ready():
+	pass # Replace with function body.
+
+
+# Called every frame. 'delta' is the elapsed time since the previous frame.
+func _process(delta):
+	pass