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POWhat is an alternative to having static abstract methods?
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  1. POWhat is an alternative to having static abstract methods?
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    copied!<p>I'm having some problems trying to figure out how to solve a problem without being able to have static method in an abstract class or interface. Consider the following code. I have many Wizards that inherit from AbsWizard. Each wizard has a method GetMagic(string spell) that only returns magic for certain magic words, yet all instances of a specific type of wizard respond to the same set of magic words.</p> <pre><code>public abstract class AbsWizard { public abstract Magic GetMagic(String magicword); public abstract string[] GetAvalibleSpells(); } public class WhiteWizard : AbsWizard { public override Magic GetMagic(string magicword) { //returns some magic based on the magic word } public override string[] GetAvalibleSpells() { string[] spells = {"booblah","zoombar"}; return spells; } } public class BlackWizard : AbsWizard { public override Magic GetMagic(string magicword) { //returns some magic based on the magic word } public override string[] GetAvalibleSpells() { string[] spells = { "zoogle", "xclondon" }; return spells; } } </code></pre> <p>I want the user to be able to first choose the type of wizard, and then be presented with a list of the spells that type of wizard can cast. Then when they choose a spell the program will find all, if any, existing wizards of the selected type and have them cast the selected spell. All wizards of a specific type will always have the same available spells, and I need a way to determine the spells a specific type of wizard can cast with out actually having access to an instance of the selected type of wizard.</p> <p>In addition I don't want to have to depend on a separate list of possible wizard types or spells. Instead I would rather just infer everything through GetAvalibleSpells() and reflection. For example I plan to cast magic as follows:</p> <pre><code> public static void CastMagic() { Type[] types = System.Reflection.Assembly.GetExecutingAssembly().GetTypes(); List&lt;Type&gt; wizardTypes = new List&lt;Type&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)) { wizardTypes.Add(t); } } //Allow user to pick a wizard type (assign a value to selectedWizardType) //find the spells the selected type of wizard can cast (populate availibleSpells) //Alow user to pick the spell (assign a value to selectedSpell) //Find all instances, if any exsist, of wizards of type selectedWizardType and call GetMagic(selectedSpell); } </code></pre>
 

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