@this and receivers

Caution

@this / @field in void init() or a free function is a compile error. :: already injects the receiver. Do not put @this on the parameter list.

CL++ is not C++. There is no Player*, no ->, and no this->x. Inside a method definition Class::Method, @ is the receiver sigil.

Write	Luau
@this	self
@janitor	self.janitor
@coins	self.coins
hello.Greet(player)	hello:Greet(player)
other.Register(@this)	other:Register(self)

Declare the type in a .clh. Implement methods with Class::Method in a .clp / .clpp. void init() holds one service object and a local Janitor.

CL++ (.clpp)

void CombatServer::BindPart(BasePart part) {
  @janitor.Add(part, "Destroy");
  other.Register(@this);
}

void Wallet::Add(int n) {
  @coins = coins + n;
  post("wallet " .: @coins);
}

Luau gerado

function CombatServer:BindPart(part: BasePart)
  self.janitor:Add(part, "Destroy")
  other:Register(self)
end

function Wallet:Add(n: number)
  self.coins = self.coins + n
  print("wallet " .. self.coins)
end

What init looks like

init does not use @this. It constructs the service and captures it in the ~>Connect callback.

void init() {
  Players players = GetService<Players>();
  LeaderstatsServer leaderstatsServer;
  Janitor janitor = new Janitor();
  leaderstatsServer.janitor = janitor;

  for (Player player in players.GetPlayers()) {
    leaderstatsServer.PlayerEntered(player);
  }

  players.PlayerAdded~>Connect(func (Player playerEntered) {
    leaderstatsServer.PlayerEntered(playerEntered);
  });
}

See syntax for the operator table, and Janitor for @janitor plus the library.