add more asserts

scripts/units/controlled_unit.gd

@@ -26,7 +26,6 @@ func _ready() -> void:
 	assert(camera != null, "camera missing!")
 	assert(selection_sprite != null, "selection_sprite missing!")
 
-	set_selected(false)
 	if spawn_pos != null and spawn_pos != Vector3.ZERO:
 		global_position = spawn_pos
 	super._ready()

scripts/units/unit.gd

@@ -20,7 +20,6 @@ var wandering_center: Vector3 = Vector3.ZERO
 
 
 func _ready() -> void:
-	assert(hover_sprite != null, "hover_sprite missing!")
 	assert(nav_agent != null, "nav_agent missing!")
 	assert(animation_tree != null, "animation_tree missing!")
 	assert(visibility_notifier != null, "visibility_notifier missing!")