Add IDhApiConfigValue.addChangeListener()

api/src/main/java/com/seibel/distanthorizons/api/interfaces/config/IDhApiConfigValue.java

@@ -1,5 +1,7 @@
 package com.seibel.distanthorizons.api.interfaces.config;
 
+import java.util.function.Consumer;
+
 /**
  * An interface for Distant Horizon's Config.
  *
@@ -48,4 +50,8 @@ public interface IDhApiConfigValue<T>
 	/** Returns the min value for this config, null if there is no min. */
 	T getMinValue();
 	
+	/** Adds a {@link Consumer} that will be called whenever the config changes to a new value. */
+	void addChangeListener(Consumer<T> onValueChangeFunc);
+	//void removeListener(Consumer<T> onValueChangeFunc); // not currently implemented
+	
 }

api/src/main/java/com/seibel/distanthorizons/api/objects/config/DhApiConfigValue.java

@@ -5,6 +5,8 @@ import com.seibel.distanthorizons.coreapi.interfaces.config.IConfigEntry;
 import com.seibel.distanthorizons.coreapi.interfaces.config.IConverter;
 import com.seibel.distanthorizons.coreapi.util.converters.DefaultConverter;
 
+import java.util.function.Consumer;
+
 /**
  * A wrapper used to interface with Distant Horizon's Config. <br> <br>
  *
@@ -68,8 +70,18 @@ public class DhApiConfigValue<coreType, apiType> implements IDhApiConfigValue<ap
 	
 	public boolean getCanBeOverrodeByApi() { return this.configEntry.getAllowApiOverride(); }
 	
-	public apiType getDefaultValue() { return this.configConverter.convertToApiType(configEntry.getDefaultValue()); }
+	public apiType getDefaultValue() { return this.configConverter.convertToApiType(this.configEntry.getDefaultValue()); }
 	public apiType getMaxValue() { return this.configConverter.convertToApiType(this.configEntry.getMax()); }
 	public apiType getMinValue() { return this.configConverter.convertToApiType(this.configEntry.getMin()); }
 	
+	
+	public void addChangeListener(Consumer<apiType> onValueChangeFunc) 
+	{
+		this.configEntry.addValueChangeListener((coreValue) -> 
+		{
+			apiType apiValue = this.configConverter.convertToApiType(coreValue);
+			onValueChangeFunc.accept(apiValue);
+		}); 
+	}
+	
 }

api/src/main/java/com/seibel/distanthorizons/coreapi/interfaces/config/IConfigEntry.java

@@ -1,6 +1,8 @@
 package com.seibel.distanthorizons.coreapi.interfaces.config;
 
 
+import java.util.function.Consumer;
+
 /**
  * Use for making the config variables
  *
@@ -56,4 +58,6 @@ public interface IConfigEntry<T>
 	/** Is the value of this equal to another */
 	boolean equals(IConfigEntry<?> obj);
 	
+	void addValueChangeListener(Consumer<T> onValueChangeFunc);
+	
 }