OSP Beginner Example

[kugesan1105]

node A{
    can scream with AnnoyingKid entry{
        print("Annoying kid screamed by A");
    }
}
node B{
}
node C{
    can scream with AnnoyingKid entry{
        print("Annoying kid made a scream by C");
    }
}
walker AnnoyingKid{
    can visitt with `root entry{
        visit [-->];
    }
    can smile with B entry{
        print("Annoying kid smiled by B");
    }
}
with entry{
    root ++> A();
    root ++> B();
    root ++> C();

    root spawn AnnoyingKid();
}

[kugesan1105]

import from random {randint}

node Landmark {
    has name: str;
    can react with Tourist entry {
        print("📸 Tourist visits", self.name);
        visit [-->];
    }
}

node Cafe {
    can react with Tourist entry {
        if randint(0,1) == 0 {
            print("☕ Tourist gets coffee and continues exploring.");
            visit [-->];
        } else {
            print("😴 Tourist got too cozy at Cafe and ended the trip.");
            disengage;
        }
    }
}


node Local {
    can react with Tourist entry {
        print("👋 Local greets the Tourist");
    }
}

walker Tourist {
    has visited: list = [];

    can start_trip with `root entry {
        print("🚶 Tourist begins the journey at", here);
        visit [-->];
    }

    can log_visit with Landmark exit {
        self.visited.append(here.name);
    }

    can end_trip with exit {
        print("🏁 Tourist trip ended. Places seen:", self.visited);
    }
}

with entry {
    # Build world
    root ++> Local();
    root ++> Landmark(name="Eiffel Tower");
    root ++> Cafe();
    root ++> Landmark(name="Colosseum");

    # Send Tourist walking
    a = (root spawn Tourist());
    print("Tourist entity ID:", a.visited);
}