koobas.hobune.stream
A common way for counting instances of gameobjects that implement subclasses derived from a single base class
I am creating several gameobjects from prefabs. All of these gameobjects are assigned scripts which implement subclasses that all derive from a single base class.
I would like to be able to count how many types of certain gameobjects there are, as defined by which subclasses they have assigned to them. I want to be able to process all the gameobjects that derive from the base class in the same way.
Ideally would like to create a variable in the base class that is static in the subclasses, so I can process all the gameobjects in the same way, but have the variable different for each of the subclasses. However I can't seem to use abstract variables which are then later declared as static.
Anyone have any suggestions for this?
Something like this comes to my mind. But be careful with serialization and Dictionaries.
class BaseClass : MonoBehaviour
{
void Start()
{
}
protected static void Register(BaseClass aThis)
{
List<BaseClass> list;
if(sInstances.TryGetValue(aThis.GetType(), out list)
{
if(!list.Contains(aThis) list.Add(aThis);
}
else
{
list = new List<BaseClass>();
list.Add(aThis);
sInstances[aThis.GetType()] = list;
}
}
private static Dictionary<Type, List<BaseClass>> sInstances = new Dictionary<Type, List<BaseClass>>();
}
If your classes now derive from BaseClass you just need to call Register(this) in the scripts Awake() method. In Instances you now have, sorted by type, a collection of your scripts, using the gameObject property on these scripts you can access the objects in your scene.
