feat: Implement core game managers, player movement logic, and initial UI scenes.

scripts/managers/ui_manager.gd

@@ -20,6 +20,7 @@ var arrange_button
 var playerboard_ui
 
 var local_player_character
+var _previous_playerboard_state: Array = []
 
 enum ActionState {
 	NONE,
@@ -122,9 +123,6 @@ func update_playerboard_ui():
 		if center_index != -1 and center_index < goals.size():
 			var goal_value = goals[center_index]
 			
-			# Check if player has collected this tile
-			var _has_tile = item == goal_value
-			
 			if item != -1:
 				# Player has a tile in this slot - show it at full brightness
 				match item:
@@ -150,6 +148,35 @@ func update_playerboard_ui():
 				8: slot.texture = item_tex[2]
 				9: slot.texture = item_tex[3]
 				10: slot.texture = item_tex[4]
+			# Non-center slots always full brightness
+			slot.modulate = Color.WHITE
+		
+		# Check for new special tile placement to trigger effect
+		if i < _previous_playerboard_state.size():
+			var prev_item = _previous_playerboard_state[i]
+			# If slot was empty or different, and now has a special tile (7-10)
+			if item != prev_item and item >= 7 and item <= 10:
+				_pulse_slot_effect(slot)
+	
+	# Update cache
+	_previous_playerboard_state = local_player_character.playerboard.duplicate()
+
+func _pulse_slot_effect(slot: Control):
+	"""Visual feedback when a special tile is placed."""
+	var tween = create_tween()
+	
+	# Reset scale first to be safe
+	slot.scale = Vector2.ONE
+	slot.pivot_offset = slot.size / 2 # Center pivot
+	
+	# Pop effect
+	tween.tween_property(slot, "scale", Vector2(1.4, 1.4), 0.15).set_trans(Tween.TRANS_BACK).set_ease(Tween.EASE_OUT)
+	tween.tween_property(slot, "scale", Vector2(1.0, 1.0), 0.2).set_trans(Tween.TRANS_BOUNCE).set_ease(Tween.EASE_OUT)
+	
+	# Flash effect
+	var original_modulate = slot.modulate
+	slot.modulate = Color(1.5, 1.5, 1.5) # Overbright
+	tween.parallel().tween_property(slot, "modulate", original_modulate, 0.3)
 
 func update_button_states():
 	if not local_player_character or local_player_character.is_in_group("Bots"):