feat: implement Stop N Go arena, animation system, and lobby manager features

scenes/player.gd

@@ -350,6 +350,18 @@ func _ready():
 	if LobbyManager.get_randomize_spawn() and not spawn_point_selected:
 		visible = false
 
+@onready var floor_spawn_bot: AnimatedSprite3D = $floor_spawn_bot
+@onready var floor_spawn_top: AnimatedSprite3D = $floor_spawn_top
+
+func _input(event: InputEvent) -> void:
+	if event.is_action_pressed("grab_item"):
+		floor_spawn_bot.play("floor_spawn_bot")
+		floor_spawn_top.play("floor_spawn_top")
+
+func play_floor_spawn():
+	floor_spawn_bot.play("floor_spawn_bot")
+	floor_spawn_top.play("floor_spawn_top")
+
 func _init_managers():
 	movement_manager = load("res://scripts/managers/player_movement_manager.gd").new()
 	movement_manager.name = "MovementManager"
@@ -549,6 +561,11 @@ func sync_special_animation() -> void:
 	"""Sync special ability animation across network."""
 	play_special_animation()
 
+@rpc("any_peer", "call_local", "reliable")
+func sync_floor_spawn_animation() -> void:
+	"""Sync floor spawn animation across network."""
+	play_floor_spawn()
+
 # =============================================================================
 # Skill VFX
 # =============================================================================