feat: Implement Stop n Go game mode with phase management, missions, dynamic safe zones, and associated UI and managers.

scripts/managers/stop_n_go_manager.gd

@@ -22,6 +22,16 @@ var safe_zone_spawned: bool = false
 # Power-Up Tile Spawning
 const POWERUP_TILES = [11, 14] # Speed (11) and Ghost (14)
 const POWERUP_SPAWN_COUNT: int = 5 # Number of power-up tiles to spawn
+var powerups_spawned: bool = false
+var stop_phase_occurred: bool = false
+
+const PERMANENT_POWERUP_LOCATIONS: Array[Vector2i] = [
+	Vector2i(4, 3),   # Area 1
+	Vector2i(8, 7),   # Area 2
+	Vector2i(11, 4),  # Area 3
+	Vector2i(15, 8),  # Area 4
+	Vector2i(18, 5)   # Area 5
+]
 
 var current_phase: Phase = Phase.GO
 var phase_timer: float = GO_DURATION
@@ -231,6 +241,7 @@ func _start_phase(phase: Phase):
 		rpc("sync_phase", phase_name, phase_timer)
 		
 		if phase == Phase.STOP:
+			stop_phase_occurred = true
 			# --- DYNAMIC SAFE ZONE: Penalize players outside the zone ---
 			if safe_zone_spawned:
 				var all_players = get_tree().get_nodes_in_group("Players")
@@ -238,7 +249,7 @@ func _start_phase(phase: Phase):
 					if not _is_in_safe_zone(p.current_position):
 						_scatter_player_tiles(p)
 			
-			# --- POWER-UP TILES: Spawn 5 Speed & Ghost tiles ---
+			# Refresh power-ups every STOP phase
 			_spawn_powerup_tiles()
 		
 		# If GO phase starts, clear all STOP phase freezes and safe zone
@@ -323,6 +334,11 @@ func setup_mission_tiles():
 	if multiplayer.is_server():
 		_spawn_mission_tiles()
 
+func spawn_initial_powerups():
+	"""Public wrapper to spawn powerups before game start."""
+	if multiplayer.is_server():
+		_spawn_powerup_tiles()
+
 func _spawn_mission_tiles():
 	var gridmap = get_parent().get_node_or_null("EnhancedGridMap")
 	if not gridmap:
@@ -679,7 +695,7 @@ func sync_clear_safe_zone(centers_to_clear: Array):
 # =============================================================================
 
 func _spawn_powerup_tiles():
-	"""Server: Spawn 5 Speed & Ghost power-up tiles at random walkable positions."""
+	"""Server: Spawn 5 permanent power-up tiles at fixed positions."""
 	if not multiplayer.is_server(): return
 	
 	var main = get_node_or_null("/root/Main")
@@ -688,40 +704,24 @@ func _spawn_powerup_tiles():
 	var gridmap = main.get_node_or_null("EnhancedGridMap")
 	if not gridmap: return
 	
-	# Collect valid positions (walkable floor, no existing item on Floor 1)
-	var valid_positions: Array[Vector2i] = []
-	for x in range(gridmap.columns):
-		for z in range(gridmap.rows):
-			var floor_tile = gridmap.get_cell_item(Vector3i(x, 0, z))
-			# Skip void, obstacles, start, finish
-			if floor_tile == -1 or floor_tile == TILE_OBSTACLE:
-				continue
-			# Skip cells that already have items on Floor 1
-			var existing_item = gridmap.get_cell_item(Vector3i(x, 1, z))
-			if existing_item != -1:
-				continue
-			valid_positions.append(Vector2i(x, z))
+	print("[StopNGo] Spawning/Refreshing 5 static power-up tiles...")
 	
-	if valid_positions.is_empty():
-		print("[StopNGo] WARNING: No valid positions for power-up tiles!")
-		return
-	
-	# Shuffle and pick up to POWERUP_SPAWN_COUNT positions
-	var rng = RandomNumberGenerator.new()
-	rng.randomize()
-	valid_positions.shuffle()
-	
-	var spawn_count = min(POWERUP_SPAWN_COUNT, valid_positions.size())
-	
-	for i in range(spawn_count):
-		var pos = valid_positions[i]
-		var tile_id = POWERUP_TILES[rng.randi() % POWERUP_TILES.size()]
+	for i in range(PERMANENT_POWERUP_LOCATIONS.size()):
+		var pos = PERMANENT_POWERUP_LOCATIONS[i]
+		
+		# Set Floor 0 beneath power-up to ID 1 (Hover pattern) - Static PADS
+		gridmap.set_cell_item(Vector3i(pos.x, 0, pos.y), 1)
+		
+		# Cycle through the available power-up types
+		var tile_id = POWERUP_TILES[i % POWERUP_TILES.size()]
 		
 		# Place on Floor 1
 		gridmap.set_cell_item(Vector3i(pos.x, 1, pos.y), tile_id)
 		
-		# Sync to all clients
+		# Sync both floor and tile to all clients and host
 		if can_rpc():
-			main.rpc("sync_grid_item", pos.x, 1, pos.y, tile_id)
+			main.rpc("sync_grid_item", pos.x, 0, pos.y, 1) # Sync floor change (Pad on)
+			main.rpc("sync_grid_item", pos.x, 1, pos.y, tile_id) # Sync power-up
 	
-	print("[StopNGo] Spawned %d power-up tiles (Speed & Ghost)" % spawn_count)
+	powerups_spawned = true
+	print("[StopNGo] Static power-up refresh completed.")