3D tutorial with brownian-ish motion enemies

3d-tutorial/3d_squash_the_creeps_starter/mob.gd

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+extends CharacterBody3D
+
+signal squashed
+
+@export var min_speed = 10
+@export var max_speed = 18
+
+# In code timer for brownian motion
+var T: float = 0.5
+var Tinit: float = 1.0
+var dt: float = 0.05
+var t: float = 0.0
+
+func _physics_process(_delta):
+	if t > T and Tinit < 0:
+		t = 0
+		set_new_velocity()
+	t += dt
+	Tinit -= dt
+	 
+	move_and_slide()
+
+func initialize(start_position, player_position):
+	look_at_from_position(start_position, player_position, Vector3.UP)
+	
+	set_new_velocity()
+
+func set_new_velocity() -> void:
+	rotate_y(randf_range(-PI / 4, PI / 4))
+	var random_speed = randi_range(min_speed, max_speed)
+	velocity = Vector3.FORWARD * random_speed
+	velocity = velocity.rotated(Vector3.UP, rotation.y)
+
+func _on_visible_on_screen_notifier_3d_screen_exited() -> void:
+	queue_free()
+
+
+func squash():
+	squashed.emit()
+	queue_free()