Implemented custom commands.

java/noppes/npcs/api/AbstractNpcAPI.java

@@ -39,6 +39,10 @@ public abstract class AbstractNpcAPI {
     public AbstractNpcAPI() {
     }
 
+    public abstract void registerICommand(ICommand command);
+
+    public abstract ICommand getICommand(String commandName, int priorityLevel);
+
     public abstract void addGlobalObject(String key, Object obj);
 
     public abstract void removeGlobalObject(String key);

java/noppes/npcs/api/ICommand.java

@@ -0,0 +1,23 @@
+package noppes.npcs.api;
+
+public interface ICommand {
+    String getCommandName();
+
+    String getCommandUsage();
+
+    int getPermissionLevel();
+
+    void setCommandName(String commandName);
+
+    void setCommandUsage(String commandUsage);
+
+    void setPermissionLevel(int permissionLevel);
+
+    String[] getAliases();
+
+    void addAliases(String... aliases);
+
+    boolean hasAlias(String alias);
+
+    void removeAlias(String alias);
+}