add aphid poop sounds and plop animations

scripts/units/abstract/unit.gd

@@ -24,6 +24,9 @@ var _advance_anim_delta_accum: float = 0
 @onready var nav_agent: NavigationAgent3D = $NavigationAgent3D
 @onready var ui_origin: Node3D = $UiOrigin
 @onready var animation_tree: AnimationTree = $AnimationTree
+@onready var animation_playback: AnimationNodeStateMachinePlayback = (
+		animation_tree.get("parameters/playback")
+)
 @onready var anim_advance_indicator: VisualInstance3D = $AnimAdvanceIndicator
 @onready var visibility_notifier: VisibleOnScreenNotifier3D = (
 		$VisibleOnScreenNotifier3D

scripts/units/aphid.gd

@@ -87,6 +87,9 @@ func _handle_honeydew_spawn(delta: float) -> void:
 	new_honeydew.global_position = global_position + new_pos
 	_put_honeydew(new_honeydew)
 
+	audio_player.play_sound(SoundManager.aphid_poop())
+	animation_playback.travel("plop")
+
 	_set_spawn_timer()
 
 

scripts/units/components/gathering.gd

@@ -146,6 +146,7 @@ func _pick_up() -> void:
 			_get_nth_pile_pos(_carrying_items.size() - 1)
 	).tween_finished
 	audio_player.play_sound(SoundManager.pop())
+	_unit.animation_playback.travel("plop_down")
 
 	await get_tree().create_timer(_pickup_interval).timeout
 	var nearest := _find_nearest(_nearby_items.values())
@@ -167,6 +168,7 @@ func _deposit() -> void:
 			return
 
 		var item := _carrying_items.pop_back() as Honeydew
+		_unit.animation_playback.travel("plop_up")
 		audio_player.play_sound(SoundManager.swoosh())
 
 		await item.start_tweening(_unit.anthill.global_position).tween_finished