Factions integration bugfix. Verify that the Factions plugin is the official MassiveCraft Factions plugin and not the outdated FactionsUUID.

src/com/massivecraft/massivecore/predicate/PredicateIntegrationFactions.java

@@ -0,0 +1,32 @@
+package com.massivecraft.massivecore.predicate;
+
+import com.massivecraft.massivecore.Integration;
+
+/**
+ * This class is supposed to be used together with the class {@link Integration}.
+ * This is a predicate that simply checks whether the MassiveCraft Factions plugin is installed.
+ *
+ * Why not just check for the plugin name "Factions"?
+ * Because FactionsUUID and other forks exists and use our name.
+ * So with that in mind we must check it's actually the real Factions that we support.
+ */
+public class PredicateIntegrationFactions extends PredicateIntegration
+{
+	// -------------------------------------------- //
+	// INSTANCE & CONSTRUCT
+	// -------------------------------------------- //
+	
+	private static PredicateIntegrationFactions i = new PredicateIntegrationFactions();
+	public static PredicateIntegrationFactions get() { return i; }
+	
+	// -------------------------------------------- //
+	// OVERRIDE > PREDICATE
+	// -------------------------------------------- //
+	
+	@Override
+	public boolean apply(Integration type)
+	{
+		return isPluginNamePresent("Factions") && isClassNamePresent("com.massivecraft.factions.engine.EnginePower");
+	}
+	
+}