feat: Introduce player movement manager with push mechanics, multiplayer synchronization, and new touch controls and powerup inventory UI.

scripts/ui/powerup_inventory_ui.gd

@@ -17,8 +17,11 @@ func _ready():
 	# We try to get them immediately. If they are children, they should be accessible.
 	var container = get_node_or_null("Container")
 	if not container:
-		print("[PowerUpUI] ERROR: HBoxContainer not found in ", get_path())
+		print("[PowerUpUI] ERROR: Container not found in ", get_path())
 		return
+	
+	# Center buttons in the container instead of spreading them out
+	container.alignment = BoxContainer.ALIGNMENT_CENTER
 		
 	# Mapping based on User Request
 	# 11: FASTER_SPEED (0) -> SpeedBtn
@@ -65,6 +68,11 @@ func _setup_btn(effect_id: int, btn: Button):
 	btn.modulate = Color(0.5, 0.5, 0.5, 0.5) # Grayed out
 	btn.focus_mode = Control.FOCUS_NONE
 	
+	# Fix "Floating" issue: don't expand button to fill whole container height
+	# This keeps the buttons grouped tightly together
+	btn.size_flags_vertical = Control.SIZE_SHRINK_CENTER
+	btn.custom_minimum_size.y = 80 # Consistent height
+	
 	# Add Level Label
 	if not btn.has_node("LevelLabel"):
 		var lvl_lbl = Label.new()
@@ -100,9 +108,9 @@ func _setup_btn(effect_id: int, btn: Button):
 		sc_lbl.mouse_filter = Control.MOUSE_FILTER_IGNORE
 		sc_lbl.horizontal_alignment = HORIZONTAL_ALIGNMENT_LEFT
 		sc_lbl.vertical_alignment = VERTICAL_ALIGNMENT_TOP
-		sc_lbl.set_anchors_preset(Control.PRESET_TOP_LEFT)
-		sc_lbl.offset_left = 0
-		sc_lbl.offset_top = -5
+		sc_lbl.set_anchors_preset(Control.PRESET_FULL_RECT)
+		sc_lbl.offset_left = 5
+		sc_lbl.offset_top = -4 # Lowered slightly from -12
 		sc_lbl.add_theme_font_size_override("font_size", 16)
 		sc_lbl.add_theme_color_override("font_outline_color", Color.BLACK)
 		sc_lbl.add_theme_constant_override("outline_size", 4)
@@ -185,7 +193,7 @@ func _connect_special_manager(special_manager):
 	# Initial State Sync
 	if icon_containers.is_empty():
 		print("[PowerUpUI] Warning: Icon containers empty during setup. Attempting _ready logic now...")
-		var container = get_node_or_null("HBoxContainer")
+		var container = get_node_or_null("Container")
 		if container:
 			# Fix: Use correct IDs 0-3 here too
 			_setup_btn(0, container.get_node_or_null("SpeedBtn"))