attempt to make stop n go gamemode

scenes/lobby.gd

@@ -40,6 +40,8 @@ extends Control
 @onready var enable_timer_label = $LobbyPanel/TopBar/SettingsSection/EnableTimerLabel
 @onready var scarcity_option = $LobbyPanel/TopBar/SettingsSection/ScarcityOption
 @onready var scarcity_label = $LobbyPanel/TopBar/SettingsSection/ScarcityLabel
+@onready var game_mode_option = $LobbyPanel/TopBar/SettingsSection/GameModeOption
+@onready var game_mode_text_label = $LobbyPanel/TopBar/SettingsSection/GameModeTextLabel
 
 # UI References - Player Slots
 @onready var players_container = $LobbyPanel/PlayersContainer
@@ -145,6 +147,9 @@ func _ready():
 	if scarcity_option:
 		scarcity_option.item_selected.connect(_on_scarcity_selected)
 	
+	if game_mode_option:
+		game_mode_option.item_selected.connect(_on_game_mode_selected)
+	
 	# Connect LobbyManager signals
 	LobbyManager.room_list_updated.connect(_on_room_list_updated)
 	LobbyManager.room_joined.connect(_on_room_joined)
@@ -160,6 +165,7 @@ func _ready():
 	LobbyManager.character_changed.connect(_on_character_changed)
 	LobbyManager.area_changed.connect(_on_area_changed)
 	LobbyManager.scarcity_mode_changed.connect(_on_scarcity_mode_changed)
+	LobbyManager.game_mode_changed.connect(_on_game_mode_changed)
 	LobbyManager.player_list_changed.connect(_update_player_slots)
 	
 	# Connect NakamaManager signals
@@ -354,6 +360,20 @@ func _on_scarcity_mode_changed(mode: String) -> void:
 	if scarcity_label:
 		scarcity_label.text = mode
 
+func _on_game_mode_selected(index: int) -> void:
+	if not LobbyManager.is_host: return
+	var mode = game_mode_option.get_item_text(index)
+	LobbyManager.set_game_mode(mode)
+
+func _on_game_mode_changed(mode: String) -> void:
+	if game_mode_option:
+		for i in range(game_mode_option.item_count):
+			if game_mode_option.get_item_text(i) == mode:
+				game_mode_option.selected = i
+				break
+	if game_mode_text_label:
+		game_mode_text_label.text = mode
+
 
 func _update_random_spawn_label(enabled: bool) -> void:
 	if random_spawn_label:
@@ -430,6 +450,11 @@ func _on_room_joined(room_data: Dictionary) -> void:
 	area_right_btn.disabled = not is_host
 	area_name_label.text = LobbyManager.get_selected_area()
 	
+	# Game Mode Update
+	if game_mode_option: game_mode_option.visible = is_host
+	if game_mode_text_label: game_mode_text_label.visible = not is_host
+	_on_game_mode_changed(LobbyManager.game_mode)
+	
 	_update_player_slots()
 	connection_status.text = "Connected to room"
 

scenes/lobby.tscn

@@ -411,6 +411,29 @@ theme_override_colors/font_color = Color(0.647, 0.996, 0.224, 1)
 theme_override_font_sizes/font_size = 11
 text = "Normal"
 
+[node name="GameModeSpacer" type="Control" parent="LobbyPanel/TopBar/SettingsSection" unique_id=1261898888]
+custom_minimum_size = Vector2(15, 0)
+layout_mode = 2
+
+[node name="GameModeOption" type="OptionButton" parent="LobbyPanel/TopBar/SettingsSection" unique_id=448678888]
+custom_minimum_size = Vector2(105, 28)
+layout_mode = 2
+theme_override_fonts/font = ExtResource("5_pc087")
+theme_override_font_sizes/font_size = 11
+selected = 0
+item_count = 2
+popup/item_0/text = "Freemode"
+popup/item_0/id = 0
+popup/item_1/text = "Stop n Go"
+popup/item_1/id = 1
+
+[node name="GameModeTextLabel" type="Label" parent="LobbyPanel/TopBar/SettingsSection" unique_id=191738888]
+visible = false
+layout_mode = 2
+theme_override_colors/font_color = Color(0.647, 0.996, 0.224, 1)
+theme_override_font_sizes/font_size = 11
+text = "Freemode"
+
 [node name="HostBanner" type="PanelContainer" parent="LobbyPanel" unique_id=1670701936]
 layout_mode = 1
 anchors_preset = 5

scenes/main.gd

@@ -10,6 +10,7 @@ var goals_cycle_manager
 var screen_shake_manager
 var touch_controls
 var camera_context_manager
+var stop_n_go_manager
 
 # Minimal local state
 var _connection_check_timer: float = 0.0
@@ -87,6 +88,13 @@ func _init_managers():
 	add_child(goals_cycle_manager)
 	goals_cycle_manager.initialize(self)
 	
+	# Stop n Go manager for phase-based gameplay
+	if LobbyManager.game_mode == "Stop n Go":
+		stop_n_go_manager = load("res://scripts/managers/stop_n_go_manager.gd").new()
+		stop_n_go_manager.name = "StopNGoManager"
+		add_child(stop_n_go_manager)
+		# No direct initialize() yet, but we'll call start_game_mode later
+	
 	# Screen shake manager for impact feedback
 	screen_shake_manager = load("res://scripts/managers/screen_shake.gd").new()
 	screen_shake_manager.name = "ScreenShakeManager"
@@ -516,7 +524,10 @@ func _start_game():
 			rpc("set_current_turn", next_player)
 		
 		# Start the global match timer (this also starts the first cycle)
-		if goals_cycle_manager:
+		if LobbyManager.game_mode == "Stop n Go":
+			if stop_n_go_manager:
+				stop_n_go_manager.start_game_mode()
+		elif goals_cycle_manager:
 			var match_duration = LobbyManager.get_match_duration()
 			goals_cycle_manager.start_match(float(match_duration))
 		
@@ -711,7 +722,6 @@ func _create_tekton(pos: Vector2i, tekton_id: int, is_static: bool = false):
 	# If Static, swap controller
 	if is_static:
 		# tekton.is_static_turret = true # Already set above
-		
 		var old_controller = tekton.get_node_or_null("TektonController")
 		if old_controller:
 			old_controller.queue_free()
@@ -724,7 +734,6 @@ func _create_tekton(pos: Vector2i, tekton_id: int, is_static: bool = false):
 		print("[Main] Spawned Tekton at %s (ID: %d)" % [pos, tekton_id])
 
 
-
 func _precalculate_static_positions():
 	"""Calculate and reserve Static Tekton positions early."""
 	if not multiplayer.is_server(): return
@@ -806,9 +815,9 @@ func _create_static_setup(pos: Vector2i, tekton_id: int, shape_idx: int):
 						var world_pos = Vector3(pos.x + 0.5, 0, pos.y + 0.5)
 						if "cell_size" in enhanced_gridmap:
 							world_pos = Vector3(
-								pos.x * enhanced_gridmap.cell_size.x + enhanced_gridmap.cell_size.x/2, 
+								pos.x * enhanced_gridmap.cell_size.x + enhanced_gridmap.cell_size.x / 2,
 								0,
-								pos.y * enhanced_gridmap.cell_size.z + enhanced_gridmap.cell_size.z/2
+								pos.y * enhanced_gridmap.cell_size.z + enhanced_gridmap.cell_size.z / 2
 							)
 						stand.global_position = world_pos
 					
@@ -843,7 +852,6 @@ func _create_static_setup(pos: Vector2i, tekton_id: int, shape_idx: int):
 		_create_tekton(pos, tekton_id, true)
 
 
-
 # =============================================================================
 # Player Management
 # =============================================================================
@@ -980,6 +988,13 @@ func sync_game_start(player_list: Array, is_turn_based: bool):
 	TurnManager.turn_based_mode = is_turn_based
 	GameStateManager.start_game()
 	
+	if LobbyManager.game_mode == "Stop n Go":
+		if not stop_n_go_manager:
+			stop_n_go_manager = load("res://scripts/managers/stop_n_go_manager.gd").new()
+			stop_n_go_manager.name = "StopNGoManager"
+			add_child(stop_n_go_manager)
+		stop_n_go_manager.activate_client_side()
+	
 	# Initialize leaderboard for all peers (after a delay to ensure players loaded)
 	call_deferred("_deferred_init_leaderboard")
 
@@ -1354,6 +1369,9 @@ func sync_grid_item(x: int, y: int, z: int, item: int):
 	# For simplicity, we trust the grid syncs via normal mechanisms or initial state.
 
 func randomize_game_grid():
+	if LobbyManager.game_mode == "Stop n Go":
+		return # Stop n Go manages its own arena setup
+		
 	var enhanced_gridmap = $EnhancedGridMap
 	if enhanced_gridmap:
 		# Randomize Floor 1 using ScarcityController
@@ -1364,6 +1382,19 @@ func randomize_game_grid():
 		# For now, let's assume server authority + sync on connect handles it, or add sync loop if critical.
 		pass
 
+@rpc("authority", "call_local", "reliable")
+func sync_full_grid_data_stop_n_go(floor0: PackedInt32Array, floor1: PackedInt32Array, cols: int, rows: int):
+	print("[Main] Stop n Go Sync: Changing grid size to %dx%d" % [cols, rows])
+	var gridmap = $EnhancedGridMap
+	if gridmap:
+		gridmap.columns = cols
+		gridmap.rows = rows
+		gridmap.clear()
+		gridmap.set_floor_data(0, floor0)
+		gridmap.set_floor_data(1, floor1)
+		gridmap.update_grid_data()
+		gridmap.initialize_astar()
+
 @rpc("any_peer")
 func request_full_grid_sync():
 	if multiplayer.is_server():
@@ -1459,6 +1490,23 @@ func _on_global_timer_updated(time_remaining: float):
 			var minutes = int(time_remaining) / 60
 			var seconds = int(time_remaining) % 60
 			timer_label.text = "%d:%02d" % [minutes, seconds]
+@rpc("any_peer", "call_local", "reliable")
+func sync_game_end_stop_n_go(winner_id: int):
+	print("[STOP n GO] Game ended! Winner: ", winner_id)
+	var winner_name = "Player " + str(winner_id)
+	var player_node = get_node_or_null(str(winner_id))
+	if player_node:
+		winner_name = player_node.display_name
+		
+	# Broadcast win
+	add_message_to_bar("WINNER", winner_name + " Reached the Finish Line!", MessageType.GOAL)
+	
+	# Stop logic
+	if stop_n_go_manager:
+		stop_n_go_manager.is_active = false
+		
+	# Trigger match end
+	_on_match_ended()
 
 func _on_match_ended():
 	"""Called when the global match timer ends - show game over screen."""
@@ -1723,7 +1771,6 @@ func _render_leaderboard_entries(sorted_player_data: Array):
 		# If local player is outside top 3 (index > 2), show them in 4th slot
 		# But if they are exactly 4th (index 3), it's the same as showing 4th place.
 		# If they are 5th (index 4) or worse, we replace 4th place with them.
-		
 		if my_index > 3:
 			# Show local player
 			items_to_display.append({"data": sorted_player_data[my_index], "rank": my_index + 1})

scenes/player.gd

@@ -832,6 +832,67 @@ func _find_valid_drop_position() -> Vector2i:
 					
 	return Vector2i(-1, -1)
 
+@rpc("any_peer", "call_local")
+func on_stop_phase_violation():
+	"""Moving during STOP phase makes you lose and scatter tiles."""
+	if not multiplayer.is_server(): return
+	
+	print("[STOP n GO] Violation by player %s! Scattering tiles." % name)
+	
+	# Stun effect
+	apply_stagger(2.0)
+	
+	# Scatter items
+	var items_to_scatter = []
+	for i in range(playerboard.size()):
+		if playerboard[i] != -1:
+			items_to_scatter.append(playerboard[i])
+			playerboard[i] = -1
+	
+	if items_to_scatter.is_empty():
+		return
+		
+	rpc("sync_playerboard", playerboard)
+	
+	# Find multiple valid drop positions around the player
+	var drop_positions = _find_multiple_drop_positions(items_to_scatter.size())
+	
+	for i in range(items_to_scatter.size()):
+		var item_id = items_to_scatter[i]
+		var pos = drop_positions[i] if i < drop_positions.size() else _find_valid_drop_position()
+		
+		if pos != Vector2i(-1, -1):
+			var cell = Vector3i(pos.x, 1, pos.y)
+			rpc("sync_grid_item", cell.x, cell.y, cell.z, item_id)
+			
+	NotificationManager.send_message(self, "STOP VIOLATION! Tiles scattered!", NotificationManager.MessageType.WARNING)
+
+func _find_multiple_drop_positions(count: int) -> Array:
+	var positions = []
+	var neighbors = enhanced_gridmap.get_neighbors(current_position, 0)
+	neighbors.shuffle()
+	
+	# Also consider neighbors of neighbors (radius 2) for more scattering
+	var candidates = []
+	for n in neighbors:
+		candidates.append(n.position)
+		var n2 = enhanced_gridmap.get_neighbors(n.position, 0)
+		for nn in n2:
+			if not nn.position in candidates:
+				candidates.append(nn.position)
+		
+	candidates.shuffle()
+	
+	for pos in candidates:
+		if positions.size() >= count: break
+		
+		var item_cell = Vector3i(pos.x, 1, pos.y)
+		if enhanced_gridmap.get_cell_item(item_cell) == -1:
+			if not is_position_occupied(pos):
+				positions.append(pos)
+				
+	return positions
+
 # =============================================================================
 # Targeting Action
 # =============================================================================
@@ -1200,6 +1261,15 @@ func start_movement_along_path(path: Array, clear_visual: bool = true):
 		if is_carrying_tekton and is_instance_valid(carried_tekton):
 			carried_tekton.current_position = current_position
 		
+		# Stop n Go Win Check
+		if LobbyManager.game_mode == "Stop n Go":
+			var sng_main = get_tree().root.get_node_or_null("Main")
+			if sng_main:
+				var sng_manager = sng_main.get_node_or_null("StopNGoManager")
+				if sng_manager and sng_manager.has_method("check_win_condition"):
+					if sng_manager.check_win_condition(name.to_int(), current_position):
+						sng_main.rpc("sync_game_end_stop_n_go", name.to_int())
+		
 		# FORCE SNAP: Update target visual position to the perfect grid center
 		# This ensures that when interpolation resumes (in _process), it pulls to the correct spot
 		target_visual_position = grid_to_world(current_position)

scripts/managers/lobby_manager.gd

@@ -41,9 +41,14 @@ signal scarcity_mode_changed(mode: String)
 # Character and area selection
 var available_characters: Array[String] = ["Copper", "Dabro", "Gatot", "Pip", "Random"]
 var available_areas: Array[String] = ["Desert", "Forest", "City", "Factory"]
+var available_game_modes: Array[String] = ["Freemode", "Stop n Go"]
 var selected_area: String = "Desert" # Host-controlled
+var game_mode: String = "Freemode" # Host-controlled
 var local_character_index: int = 0 # Local player's character index
 
+# Signals
+signal game_mode_changed(mode: String)
+
 # Ready to start game check
 var _all_ready: bool = false
 
@@ -345,6 +350,29 @@ func sync_area(area_name: String) -> void:
 	selected_area = area_name
 	emit_signal("area_changed", area_name)
 
+# =============================================================================
+# Game Mode Selection (Host Only)
+# =============================================================================
+
+func set_game_mode(mode: String) -> void:
+	"""Host sets the game mode. Syncs to all clients."""
+	if not is_host:
+		push_warning("Only host can change game mode")
+		return
+	
+	if mode not in available_game_modes:
+		push_error("Invalid game mode: " + mode)
+		return
+	
+	game_mode = mode
+	rpc("sync_game_mode", mode)
+
+@rpc("authority", "call_local", "reliable")
+func sync_game_mode(mode: String) -> void:
+	"""Sync game mode selection from host to clients."""
+	game_mode = mode
+	emit_signal("game_mode_changed", mode)
+
 func start_game() -> void:
 	"""Host triggers game start (transitions all players to main.tscn)."""
 	if not is_host:
@@ -361,6 +389,8 @@ func start_game() -> void:
 	rpc("sync_enable_cycle_timer", enable_cycle_timer)
 	# Sync scarcity mode
 	rpc("sync_scarcity_mode", scarcity_mode)
+	# Sync game mode
+	rpc("sync_game_mode", game_mode)
 	
 	# Notify all clients to start
 	rpc("_on_game_starting")
@@ -484,3 +514,4 @@ func reset() -> void:
 	selected_area = "Desert"
 	local_character_index = 0 # Default to "Copper"
 	enable_cycle_timer = false
+	game_mode = "Freemode"

scripts/managers/player_movement_manager.gd

@@ -54,6 +54,14 @@ func simple_move_to(grid_position: Vector2i) -> bool:
 	if player.get("is_frozen"):
 		return false
 
+	# Stop n Go Mode Violation Check
+	var main = player.get_tree().root.get_node_or_null("Main")
+	if main:
+		var manager = main.get_node_or_null("StopNGoManager")
+		if manager and manager.has_method("check_movement_violation"):
+			if manager.check_movement_violation(player.name.to_int(), player.current_position, grid_position):
+				return false
+
 	var distance: int
 	if use_diagonal_movement:
 		distance = max(abs(grid_position.x - player.current_position.x), abs(grid_position.y - player.current_position.y))
@@ -100,7 +108,8 @@ func simple_move_to(grid_position: Vector2i) -> bool:
 
 	rotate_towards_target(grid_position)
 	
-	if player.is_multiplayer_authority() and player.has_method("sync_walk_animation"):
+	if player.is_multiplayer_authority() and multiplayer.has_multiplayer_peer() and multiplayer.multiplayer_peer.get_connection_status() == MultiplayerPeer.CONNECTION_CONNECTED:
+		if player.has_method("sync_walk_animation"):
 			player.rpc("sync_walk_animation")
 
 	var path = [Vector2(player.current_position.x, player.current_position.y), Vector2(grid_position.x, grid_position.y)]
@@ -108,6 +117,7 @@ func simple_move_to(grid_position: Vector2i) -> bool:
 	
 	current_move_direction = grid_position - player.current_position
 	
+	if multiplayer.has_multiplayer_peer() and multiplayer.multiplayer_peer.get_connection_status() == MultiplayerPeer.CONNECTION_CONNECTED:
 		player.rpc("start_movement_along_path", path, not (player.is_bot or player.is_in_group("Bots")))
 	
 	return true

scripts/managers/playerboard_manager.gd

@@ -91,6 +91,13 @@ func grab_item(grid_position: Vector2i) -> bool:
 		# Normal Tile: Add to playerboard
 		player.playerboard[target_slot] = item
 		
+		# Stop n Go Mission Progress
+		var sng_main = player.get_tree().root.get_node_or_null("Main")
+		if sng_main:
+			var sng_manager = sng_main.get_node_or_null("StopNGoManager")
+			if sng_manager and sng_manager.has_method("update_mission_progress"):
+				sng_manager.update_mission_progress(player.name.to_int(), item)
+	
 	# Update UI immediately for responsiveness
 	
 	# Update UI immediately for responsiveness
@@ -175,6 +182,11 @@ func _execute_grab(grid_pos: Vector2i, cell: Vector3i, item_id: int):
 	else:
 		player.playerboard[target_slot] = item_id
 		
+		# Stop n Go Mission Progress
+		var sng_manager = main.get_node_or_null("StopNGoManager")
+		if sng_manager and sng_manager.has_method("update_mission_progress"):
+			sng_manager.update_mission_progress(player.name.to_int(), item_id)
+	
 	# 3c. Broadcast the new playerboard state to all clients
 	var peer_id = player.name.to_int()
 	main.rpc("sync_playerboard", peer_id, player.playerboard)

scripts/managers/special_tiles_manager.gd

@@ -165,7 +165,7 @@ func add_powerup_from_item(item_id: int):
 			emit_signal("powerup_unlocked", effect, powerup_levels[effect])
 			print("Player %s leveled up %s to Lvl %d" % [player.name, SpecialEffect.keys()[effect], powerup_levels[effect]])
 		
-	if player.is_multiplayer_authority():
+	if player.is_multiplayer_authority() and multiplayer.has_multiplayer_peer() and multiplayer.multiplayer_peer.get_connection_status() == MultiplayerPeer.CONNECTION_CONNECTED:
 		rpc("sync_inventory_add", effect, powerup_levels[effect])
 
 @rpc("any_peer", "call_local", "reliable")
@@ -254,7 +254,7 @@ func activate_effect(effect: int, target_player: Node3D = null):
 			_execute_invisible_mode(player)
 	
 	# Play generic cast animation or sound?
-	if player.is_multiplayer_authority():
+	if player.is_multiplayer_authority() and multiplayer.has_multiplayer_peer() and multiplayer.multiplayer_peer.get_connection_status() == MultiplayerPeer.CONNECTION_CONNECTED:
 		player.rpc("trigger_screen_shake", "light")
 		# Sync cooldown to others not strictly needed unless UI shows it? 
 		# Probably local UI only.
@@ -308,6 +308,7 @@ func _execute_area_freeze(center_pos: Vector2i = Vector2i.ZERO):
 		
 		# If inside square radius
 		if dx <= radius and dy <= radius:
+			if multiplayer.has_multiplayer_peer() and multiplayer.multiplayer_peer.get_connection_status() == MultiplayerPeer.CONNECTION_CONNECTED:
 				p.rpc("apply_slow_effect", FREEZE_SLOW_DURATION)
 			NotificationManager.send_message(p, "Caught in Freeze Zone!", NotificationManager.MessageType.WARNING)
 			if p != player: # Don't score for freezing self (unless desired?) - Assuming enemies
@@ -336,6 +337,7 @@ func _execute_area_freeze(center_pos: Vector2i = Vector2i.ZERO):
 						var current_item = enhanced_gridmap.get_cell_item(Vector3i(pos.x, 0, pos.y))
 						if current_item != 4: # 4 is Wall Block
 							# Use Item 12 (Blue Freeze Tile) on Layer 0 (Floor)
+							if multiplayer.has_multiplayer_peer() and multiplayer.multiplayer_peer.get_connection_status() == MultiplayerPeer.CONNECTION_CONNECTED:
 								main.rpc("sync_grid_item", pos.x, 0, pos.y, 12)
 		
 		# Cleanup visual timer (managed locally by author)
@@ -404,7 +406,7 @@ func _execute_block_floor(target_pos: Vector2i):
 			
 		if player.is_multiplayer_authority():
 			var main = player.get_tree().get_root().get_node_or_null("Main")
-			if main:
+			if main and multiplayer.has_multiplayer_peer() and multiplayer.multiplayer_peer.get_connection_status() == MultiplayerPeer.CONNECTION_CONNECTED:
 				main.rpc("sync_grid_item", block_pos.x, block_pos.y, block_pos.z, 4)
 		
 		# Record for restoration
@@ -462,7 +464,7 @@ func spawn_powerups_around(center: Vector2i, force_powerups: bool = true):
 				
 				if player.is_multiplayer_authority():
 					var main = player.get_tree().get_root().get_node_or_null("Main")
-					if main:
+					if main and multiplayer.has_multiplayer_peer() and multiplayer.multiplayer_peer.get_connection_status() == MultiplayerPeer.CONNECTION_CONNECTED:
 						main.rpc("sync_grid_item", cell.x, cell.y, cell.z, item_id)
 
 

scripts/managers/stop_n_go_manager.gd

@@ -0,0 +1,265 @@
+extends Node
+class_name StopNGoManager
+
+# StopNGoManager - Handles phase transitions, missions, and movement penalties
+
+signal phase_changed(new_phase: String, remaining_time: float)
+signal mission_status_updated(player_id: int, completed: bool)
+signal player_penalized(player_id: int)
+
+enum Phase {GO, STOP}
+
+const GO_DURATION: float = 12.0
+const STOP_DURATION: float = 6.0
+
+var current_phase: Phase = Phase.GO
+var phase_timer: float = GO_DURATION
+var is_active: bool = false
+
+var player_missions: Dictionary = {} # player_id -> {tile_id: count, current: count}
+var finish_line_x: int = 21 # Right side of the map for win condition
+
+# Tile IDs (Assumed based on analysis)
+const TILE_WALKABLE = 0
+const TILE_SAFE = 2 # Green Safe Zone
+const TILE_OBSTACLE = 4 # Black Obstacle
+
+var hud_layer: CanvasLayer
+var phase_label: Label
+var mission_label: Label
+
+func _ready():
+	set_process(false)
+	_setup_hud()
+
+func _setup_hud():
+	hud_layer = CanvasLayer.new()
+	hud_layer.visible = false
+	add_child(hud_layer)
+	
+	var vbox = VBoxContainer.new()
+	vbox.set_anchors_preset(Control.PRESET_TOP_RIGHT)
+	vbox.offset_right = -20
+	vbox.offset_top = 100
+	hud_layer.add_child(vbox)
+	
+	# Style for HUD
+	var style = StyleBoxFlat.new()
+	style.bg_color = Color(0, 0, 0, 0.4)
+	style.content_margin_left = 10
+	style.content_margin_top = 10
+	style.content_margin_right = 10
+	style.content_margin_bottom = 10
+	
+	var panel = PanelContainer.new()
+	panel.add_theme_stylebox_override("panel", style)
+	vbox.add_child(panel)
+	
+	var inner_vbox = VBoxContainer.new()
+	panel.add_child(inner_vbox)
+	
+	phase_label = Label.new()
+	phase_label.text = "PHASE: GO"
+	phase_label.horizontal_alignment = HORIZONTAL_ALIGNMENT_RIGHT
+	phase_label.add_theme_font_size_override("font_size", 32)
+	phase_label.add_theme_color_override("font_color", Color.GREEN)
+	inner_vbox.add_child(phase_label)
+	
+	mission_label = Label.new()
+	mission_label.text = "MISSION: Collect 3 Hearts"
+	mission_label.horizontal_alignment = HORIZONTAL_ALIGNMENT_RIGHT
+	inner_vbox.add_child(mission_label)
+
+func _process(delta):
+	if not is_active:
+		return
+		
+	if multiplayer.is_server():
+		phase_timer -= delta
+		if phase_timer <= 0:
+			if current_phase == Phase.GO:
+				_start_phase(Phase.STOP)
+			else:
+				_start_phase(Phase.GO)
+	
+	# Update HUD locally
+	_update_hud_visuals()
+
+func _update_hud_visuals():
+	var phase_name = "GO" if current_phase == Phase.GO else "STOP"
+	if phase_label:
+		phase_label.text = "PHASE: %s (%.0fs)" % [phase_name, max(0, phase_timer)]
+		phase_label.add_theme_color_override("font_color", Color.GREEN if current_phase == Phase.GO else Color.RED)
+	
+	var my_id = multiplayer.get_unique_id()
+	if mission_label and player_missions.has(my_id):
+		var mission = player_missions[my_id]
+		mission_label.text = "Tiles: %d / %d" % [mission["current"], mission["required"]]
+		if mission["current"] >= mission["required"]:
+			mission_label.text = "MISSION COMPLETE! REACH FINISH!"
+			mission_label.add_theme_color_override("font_color", Color.GOLD)
+
+func activate_client_side():
+	is_active = true
+	if hud_layer:
+		hud_layer.visible = true
+	set_process(true)
+
+func start_game_mode():
+	activate_client_side()
+	if multiplayer.is_server():
+		_setup_arena()
+		_assign_missions()
+		_start_phase(Phase.GO)
+
+func _start_phase(phase: Phase):
+	current_phase = phase
+	phase_timer = GO_DURATION if phase == Phase.GO else STOP_DURATION
+	
+	var phase_name = "GO" if phase == Phase.GO else "STOP"
+	if multiplayer.has_multiplayer_peer() and multiplayer.multiplayer_peer.get_connection_status() == MultiplayerPeer.CONNECTION_CONNECTED:
+		rpc("sync_phase", phase_name, phase_timer)
+	emit_signal("phase_changed", phase_name, phase_timer)
+
+@rpc("authority", "call_local", "reliable")
+func sync_phase(phase_name: String, duration: float):
+	current_phase = Phase.GO if phase_name == "GO" else Phase.STOP
+	phase_timer = duration
+
+func _setup_arena():
+	var gridmap = get_node("/root/Main/EnhancedGridMap")
+	if not gridmap: return
+	
+	print("[StopNGo] Setting up 22x10 Accurate Horizontal Arena...")
+	# Set Size for Stop n Go
+	gridmap.columns = 22
+	gridmap.rows = 10
+	
+	# Clear existing items on all layers
+	gridmap.clear()
+
+	# Create bands based on X (Horizontal Progress)
+	for x in range(gridmap.columns):
+		var tile_id = TILE_WALKABLE
+		# Green Safe Zones at X=7,8 and X=14,15
+		if x == 7 or x == 8 or x == 14 or x == 15:
+			tile_id = TILE_SAFE
+		
+		for z in range(gridmap.rows):
+			gridmap.set_cell_item(Vector3i(x, 0, z), tile_id)
+
+	# Place Specific Obstacles (Black Bars) to match user images
+	# Lane 1 (X=2..6) - Vertical bar at X=4
+	for z in range(0, 4):
+		gridmap.set_cell_item(Vector3i(4, 0, z), TILE_OBSTACLE)
+	for z in range(6, 10):
+		gridmap.set_cell_item(Vector3i(4, 0, z), TILE_OBSTACLE)
+	
+	# Lane 2 (X=9..13) - Vertical bar at X=11
+	for z in range(3, 7):
+		gridmap.set_cell_item(Vector3i(11, 0, z), TILE_OBSTACLE)
+	
+	# Lane 3 (X=16..20) - L-shape at top
+	for z in range(0, 3):
+		gridmap.set_cell_item(Vector3i(18, 0, z), TILE_OBSTACLE)
+	gridmap.set_cell_item(Vector3i(19, 0, 2), TILE_OBSTACLE)
+	gridmap.set_cell_item(Vector3i(20, 0, 2), TILE_OBSTACLE)
+	
+	# Another bar at bottom of Lane 3
+	for z in range(6, 9):
+		gridmap.set_cell_item(Vector3i(18, 0, z), TILE_OBSTACLE)
+	
+	gridmap.update_grid_data()
+	gridmap.initialize_astar()
+	
+	# Spawn tiles for mission (Heart = 7)
+	if multiplayer.is_server():
+		_spawn_mission_tiles()
+		
+		# Sync the WHOLE grid to all clients to ensure size and stripes are correct
+		var main = get_node("/root/Main")
+		if main and multiplayer.has_multiplayer_peer() and multiplayer.multiplayer_peer.get_connection_status() == MultiplayerPeer.CONNECTION_CONNECTED:
+			# Gather all floor 0 and floor 1 data
+			var floor0_data = gridmap.get_floor_data(0)
+			var floor1_data = gridmap.get_floor_data(1)
+			main.rpc("sync_full_grid_data_stop_n_go", floor0_data, floor1_data, gridmap.columns, gridmap.rows)
+
+func _spawn_mission_tiles():
+	var gridmap = get_node("/root/Main/EnhancedGridMap")
+	var count = 0
+	while count < 40: # Spawn plenty of hearts
+		var x = randi() % gridmap.columns
+		var z = randi() % gridmap.rows
+		# Only spawn in walkable areas, not safe zones or start/finish
+		if gridmap.get_cell_item(Vector3i(x, 0, z)) == TILE_WALKABLE:
+			if gridmap.get_cell_item(Vector3i(x, 1, z)) == -1:
+				gridmap.set_cell_item(Vector3i(x, 1, z), ScarcityModel.TILE_HEART)
+				count += 1
+
+func _assign_missions():
+	# Each player needs to collect 3 specific tiles (e.g. Heart)
+	var players = GameStateManager.players
+	for p_id in players:
+		player_missions[p_id] = {
+			"target_tile": ScarcityModel.TILE_HEART,
+			"required": 3,
+			"current": 0
+		}
+	if multiplayer.has_multiplayer_peer() and multiplayer.multiplayer_peer.get_connection_status() == MultiplayerPeer.CONNECTION_CONNECTED:
+		rpc("sync_missions", player_missions)
+
+@rpc("authority", "call_local", "reliable")
+func sync_missions(missions: Dictionary):
+	player_missions = missions
+
+func check_movement_violation(player_id: int, from: Vector2i, to: Vector2i) -> bool:
+	"""Check if movement is illegal (during STOP phase and not in safe zone)."""
+	if current_phase == Phase.STOP:
+		var main = get_node("/root/Main")
+		var gridmap = main.get_node("EnhancedGridMap") if main else null
+		if gridmap:
+			var tile_from = gridmap.get_cell_item(Vector3i(from.x, 0, from.y))
+			if tile_from != TILE_SAFE:
+				_penalize_player(player_id)
+				return true
+	return false
+
+func _penalize_player(player_id: int):
+	if not multiplayer.is_server(): return
+	
+	var main = get_node("/root/Main")
+	if not main: return
+	
+	var player_node = main.get_node_or_null(str(player_id))
+	if player_node:
+		if multiplayer.has_multiplayer_peer() and multiplayer.multiplayer_peer.get_connection_status() == MultiplayerPeer.CONNECTION_CONNECTED:
+			player_node.rpc("on_stop_phase_violation")
+		emit_signal("player_penalized", player_id)
+
+func update_mission_progress(player_id: int, tile_id: int):
+	if not player_missions.has(player_id): return
+	
+	var mission = player_missions[player_id]
+	if tile_id == mission["target_tile"]:
+		mission["current"] = min(mission["current"] + 1, mission["required"])
+		
+		if mission["current"] >= mission["required"]:
+			emit_signal("mission_status_updated", player_id, true)
+		
+		if multiplayer.is_server() and multiplayer.has_multiplayer_peer() and multiplayer.multiplayer_peer.get_connection_status() == MultiplayerPeer.CONNECTION_CONNECTED:
+			rpc("sync_mission_progress", player_id, mission["current"])
+
+@rpc("any_peer", "call_local", "reliable")
+func sync_mission_progress(player_id: int, current: int):
+	if player_missions.has(player_id):
+		player_missions[player_id]["current"] = current
+
+func check_win_condition(player_id: int, position: Vector2i) -> bool:
+	if not player_missions.has(player_id): return false
+	
+	var mission = player_missions[player_id]
+	if mission["current"] >= mission["required"]:
+		# Win when reaching X >= 21
+		if position.x >= finish_line_x:
+			return true
+	return false

scripts/managers/stop_n_go_manager.gd.uid

@@ -0,0 +1 @@
+uid://kiv6fpqym1c0

scripts/nakama_manager.gd

@@ -51,15 +51,16 @@ func connect_to_nakama_async(email: String = "", password: String = "") -> bool:
 	# 1. Authenticate
 	if email == "":
 		var device_id = OS.get_unique_id()
-		# For testing, append a random number to device ID to simulate unique users on one machine
-		device_id = device_id + str(randi())
+		# Use a more stable ID for testing instead of randi() every call
+		# If you need multiple clients on one machine, consider a command line arg or config
 		session = await client.authenticate_device_async(device_id)
 	else:
 		session = await client.authenticate_email_async(email, password)
 	
 	if session.is_exception():
-		printerr("Auth Error: ", session.get_exception().message)
-		emit_signal("connection_failed", session.get_exception().message)
+		var err = session.get_exception()
+		printerr("[NakamaManager] Auth Error: %s (Code: %s)" % [err.message, err.status_code])
+		emit_signal("connection_failed", err.message)
 		return false
 
 	# 2. Connect Socket
@@ -67,8 +68,9 @@ func connect_to_nakama_async(email: String = "", password: String = "") -> bool:
 	var socket_result = await socket.connect_async(session)
 	
 	if socket_result.is_exception():
-		printerr("Socket Error: ", socket_result.get_exception().message)
-		emit_signal("connection_failed", socket_result.get_exception().message)
+		var err = socket_result.get_exception()
+		printerr("[NakamaManager] Socket Error: %s (Code: %s)" % [err.message, err.status_code])
+		emit_signal("connection_failed", err.message)
 		return false
 
 	# 3. Initialize Multiplayer Bridge