Timer and object?

[wigga]

hi i tried searching some timer tutorials but i cannot find what i am looking for.
coming from a C++ background, this assignment is my homework.
i am perfectly fluent in C++, but i dont know much about C#.
How do i go about passing the Pet object object into the static timer function?
Does anyone have tips on my code? please hlep me on this one.

here is my code:

using System;
using System.Text;
using System.Timers;

namespace Tamagotchi
{
    class Pet
    {
        public int Age;
        public int Mood;
        public int Weight;
        public int Energy;
        public bool Crapped;
        public bool Healthy;
        public int Hunger;
        public bool Alive;
        public Timer Event = new Timer();

        public string Name;

        protected virtual void OnAge() { }
        protected virtual void OnCrapped() { }
        protected virtual void OnHealth() { }
        protected virtual void OnMood(int x) { }
        protected virtual void OnHunger(int x) { }
        protected virtual void OnWeight(int x) { }
        protected virtual void OnEnergy(int x) { }
        protected virtual void OnAlive() { }

        private static void Event_Tick(object sender, ElapsedEventArgs args)
        {
            Random s = new Random();
            if (Crapped)
            {
                int i = s.Next(1000, 2000);
                if (i > 1400 && i < 1600)
                {
                    Healthy = false;
                    OnHealth();
                }
            }
            switch(s.Next(0, 3))
            {
                case 0:
                    int x = Hunger++;
                    OnHunger(x);
                    int i = s.Next(1000, 2000);
                    if (i > 1400 && i < 1600)
                    {
                        Crapped = true;
                        OnCrapped();
                    }
                    break;
                case 1:
                    int x = Mood--;
                    OnMood(x);
                    break;
                case 2:
                    int x = Weight--;
                    OnWeight(x);
                    break;
                case 3:
                    int x = Energy--;
                    OnEnergy(x);
                    break;
            }
            Event.Interval = s.Next(1000, 2000);
        }

        public void Cure()
        {
            Healthy = true;
        }

        public Pet()
        {
            Event.Elapsed += new ElapsedEventHandler(Event_Tick);
            Event.Interval = 1000;
        }
        
        public void Start()
        {
            Healthy = true;
            Crapped = false;
            Energy = 0;
            Age = 0;
            Mood = 0;
            Hunger = 0;
            Weight = 0;
            Alive = true;
            Event.Start();
            OnAlive();
        }

        public void Clean()
        {
            Crapped = false;
        }

        public void End()
        {
            Event.Stop();
            Alive = false;
            OnAlive();
        }

        public void Feed()
        {
            Hunger++;
            Weight++;
        }

        public void Play()
        {
            Mood++;
            Weight--;
        }
    }

    class Program
    {
        class MyPet: Pet
        {
            protected override void OnAge()
            {
                Console.WriteLine(Name + " older.");
            }

            protected override void OnMood(int x)
            {
                if(Mood > 5)
                    Console.WriteLine(Name + " happy.");
                else if(Mood < -5)
                    Console.WriteLine(Name + " unhappy.");
            }

            protected override void OnWeight(int x)
            {
                if (Weight < 5)
                    Console.WriteLine(Name + " skinny.");
                else if (Weight > 10)
                    Console.WriteLine(Name + " fat.");
            }

            protected override void OnHunger(int x)
            {
                if(Hunger > 0)
                    Console.WriteLine(Name + " starving.");
            }

            protected override void OnCrapped()
            {
                if (Crapped)
                    Console.WriteLine(Name + " poo.");
                else
                    Console.WriteLine(Name + " flush.");
            }

            protected override void OnAlive()
            {
                if (Alive)
                    Console.WriteLine(Name + " born.");
                else
                    Console.WriteLine(Name + " die.");
            }

            public void Clean()
            {
                base.Clean();
                Console.WriteLine(Name + " cleaned.");
            }

            public void Feed()
            {
                base.Feed();
                Console.WriteLine(Name + " fed.");
            }

            public void Play()
            {
                base.Play();
                Console.WriteLine(Name + " play.");
            }

            public void Cure()
            {
                base.Cure();
                Console.WriteLine(Name + " cure.");
            }

            public void PrintStatus()
            {
                Console.WriteLine("Name: " + Name + ".");
                Console.WriteLine("Age: " + Age + ".");
                Console.WriteLine("Mood: " + Mood + ".");
                Console.WriteLine("Hunger: " + Hunger + ".");
                Console.WriteLine("Weight: " + Weight + ".");
                Console.WriteLine("Energy: " + Energy + ".");
                Console.WriteLine("Crapped: " + Crapped + ".");
                Console.WriteLine("Healthy: " + Healthy + ".");
            }
        };

        static MyPet pet = new MyPet();

        static void PrintMenu()
        {
            Console.WriteLine("0. Quit");
            Console.WriteLine("1. Pet Status");
            Console.WriteLine("2. Feed Pet");
            Console.WriteLine("3. Play Pet");
            Console.WriteLine("4. Clean Pet");
            Console.WriteLine("5. Cure Pet");
            Console.WriteLine("X. Save Pet");
        }

        static void Main(string[] args)
        {
            Console.WriteLine("1. New Pet");
            Console.WriteLine("X. Load Pet");
            switch (Console.ReadKey(true).KeyChar)
            {
                case '1':
                    Console.Write("Enter a name for your pet: ");
                    pet.Name = Console.ReadLine();
                    pet.Start();
                    break;
            }
            PrintMenu();
            while (true)
            {
                switch (Console.ReadKey(true).KeyChar)
                {
                    case '0':
                        return;
                    case '1':
                        pet.PrintStatus();
                        break;
                    case '2':
                        pet.Feed();
                        break;
                    case '3':
                        pet.Play();
                        break;
                    case '4':
                        pet.Clean();
                        break;
                    case '5':
                        pet.Cure();
                        break;
                    default:
                        Console.WriteLine("Invalid command.");
                        PrintMenu();
                        break;
                }
            }
        }
    }
}

[darwen]

Here's a hint, since this is homework. The timer event method doesn't need to be static : it can be an instance member of a class.

Darwen.

[Mutant_Fruit]

Console.WriteLine("Name: " + Name + ".");

Can also be written as:

Console.WriteLine("Name: {0}.", Name);

Similarly for the rest. It's slightly more readable like that, especially when the number of parameters goes up:

Console.WriteLine ("{0} year old {1} is feeling {2}", Age, Name, Mood);
versus
Console.WriteLine (Age.ToString () + " year old " + Name + " is feeling " + Mood.ToString ());

[wigga]

i know it can be written that way. i prefer this method.
if there is any reason why your method is better. i would be glad to know. like performance? even tho thats not important in homework really, i just wanna get my homework done and be done with it so i can do my own projects

how do you mean it can be a member of the class? in C++ that would mean that the function is no good, sorry dont know how to explain it. do you mean i can just make it non-static and it will just magicly work?

okay thanks for your both replies;.

[darwen]

in C++ that would mean that the function is no good

Yes, quite true. Function pointers in C++ are usually static.

This is not the case in C# (.NET). Delegates can (and most often are) created for instance methods - the delegate itself holds a pointer to the instance as well as the function.

do you mean i can just make it non-static and it will just magicly work?

I'd have thought it would have been quicker to try it than to reply to the post - but yes, it will work if you make your method non-static.

Then since you have an instance method it can gain access to all instance member variables of the class.

Darwen.

[wigga]

Thanks for your reply.

"I'd have thought it would have been quicker to try it than to reply to the post"

that might be true, but than i would leave this forum and never knowing what C# is really actually doing, and not learning anything usefull

And now you have explained it to me perfectly. Thanks alot!