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  1. PO
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    <p>First, you should really consider whether you can't bend the rules of not using instances of Wizards to discover their available spells. I find that the <a href="http://en.wikipedia.org/wiki/Prototype_pattern" rel="nofollow noreferrer">prototype pattern</a> can actually be quite useful for this sort of thing.</p> <p>However, if you really can't do that, you can use nested classes and reflection to discover the available spells that a particular concrete AbsWizard-derivative can cast. Here's an example:</p> <pre><code>public abstract class AbsWizard { public abstract Magic GetMagic(String magicword); public abstract string[] GetAvalibleSpells(); } public class WhiteWizard : AbsWizard { // organizes all the spells available to the wizard... public sealed class Spells { // NOTE: Spells may be better off as a specific class, rather than as strings. // Then you could decorate them with a lot of other information (cost, category, etc). public const string Abracadabra = "Abracadabra"; public const string AlaPeanutButterSandwiches = "APBS"; } } public static void CastMagic() { Type[] types = System.Reflection.Assembly.GetExecutingAssembly().GetTypes(); List&lt;Type&gt; wizardTypes = new List&lt;string&gt;(); List&lt;string&gt; avalibleSpells = new List&lt;string&gt;(); Type selectedWizardType; string selectedSpell; foreach (Type t in types) { if (typeof(AbsWizard).IsAssignableFrom(t)) { // find a nested class named Spells and search it for public spell definitions // better yet, use an attribute to decorate which class is the spell lexicon var spellLexicon = Type.FromName( t.FullName + "+" + "Spells" ); foreach( var spellField in spellLexicon.GetFields() ) // whatever you do with the spells... } } } </code></pre> <p>There are many ways to improve the above code.</p> <p>First, you can define your own custom attribute that you can tag on the nested classes of each wizard to identify the spell lexicon.</p> <p>Second, using strings to define the available spells may end up being a bit limiting. You may find it easier to define a global static list of all available spells (as some kind of class, let's call it <code>Spell</code>). You could then define the available spells of the wizard based off this list, rather than strings.</p> <p>Third, consider creating an external configuration for this thing rather than embedded, nested classes. It's more flexible and possibly easier to maintain. However, it can be nice to write code like:</p> <pre><code>WhiteWizard.Spells.Abracadabra.Cast(); </code></pre> <p>Finally, consider creating a static dictionary for each Wizard-derivative that manages the list of available spells so that you can avoid performing reflection (which is expensive) more than once.</p>
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    1. POWhat is an alternative to having static abstract methods?
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    1. USLBushkin
    1. USLBushkin
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    1. COYou forgot to include the example.
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      1. USMaximilian Mayerl
    2. COI can't instantiate a "Wizard". I don't really have wizards I was just trying to make a simpler example for the purpose of the question. The whole program is actual a plug-in for another program where my class wraps a class from the API of the overall program.
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      1. USEric Anastas
 

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