C# multiple classes using generics and this -

i'm trying work on custom entity system framework develop game. i'm trying have component, , component system classes can derive further classes from. unsure of how directly explain i'm trying do, i'm going copy , paste code here, , try formulate specific question @ end.

component

public class component  {     public entity entity;      public component() { }      public component(entity e)     { e.addcomponent(this); } } 

component system

public class componentsystem<t> t : component {     protected list<t> components;      public void addcomponent(t com)     {         this.components.add(com);     }      public void removecomponent(t com)     {         this.components.remove(com);     }      public void update(double timedelta = 0.0f)     {     } } 

how main now

public main(string[] args) {     tagsystem tags = new tagsystem();     groupsystem groups = new groupsystem();      entity e = new entity();     e.addcomponent(new tagcomponent("uniqueid"));     e.addcomponent(new groupcomponent());      tags.addcomponent(e.getcomponent<tagcomponent>());     groups.addcomponent(e.getcomponent<groupcomponent>()); } 

how main look

public main(string[] args) {     tagsystem tags = new tagsystem();     groupsystem groups = new groupsystem();      entity e = new entity();     e.addcomponent(new tagcomponent(tags, "uniqueid"));     e.addcomponent(new groupcomponent(groups));      // or this?     entity e = new entity();     e.addcomponent(new tagcomponent<tagsystem>(tags, "uniqueid"));     e.addcomponent(new groupcomponent<groupsystem>(groups)); } 

i guess i'm trying have component automatically added component system on generation, not know how accomplish this. i've tried following, neither 1 works:

public void addtosystem<t, u>(t sys) t : componentsystem<u>  { sys.addcomponent(this); } public void addtosystem<t>(t sys)  { sys.addcomponent(this); } // fails because t has no method addcomponent 

a reasonable design may turn componentsystem factory.

this way, whenever component queried instance of object, keep track of component instances hands out. use dependency injection initialize component.

there overhead:

1. you need register objects produced factory (so component types won't coupled component system)
2. you need define interface components (or base class if components have same functionality) implement component system knows them
3. you need way of telling component system remove instances or else memory taken component system forever growing

just thoughts