Add permissions for region effects

api/src/main/java/net/islandearth/rpgregions/effects/PotionRegionEffect.java

@@ -21,7 +21,9 @@ public class PotionRegionEffect extends RegionEffect {
 
 	@Override
 	public void effect(Player player) {
-		player.addPotionEffect(potionEffect);
+		if (this.isIgnorePerm() || player.hasPermission(this.getPermission())) {
+			player.addPotionEffect(potionEffect);
+		}
 	}
 
 	@Override

api/src/main/java/net/islandearth/rpgregions/effects/RegionEffect.java

@@ -6,13 +6,15 @@ import org.bukkit.inventory.ItemStack;
 import java.util.List;
 
 public abstract class RegionEffect {
-
+	
 	private final boolean wearingRequired;
 	private final List<ItemStack> ignoreItems;
+	private final boolean ignorePerm;
 
 	public RegionEffect(boolean wearingRequired, List<ItemStack> ignoreItems) {
 		this.wearingRequired = wearingRequired;
 		this.ignoreItems = ignoreItems;
+		this.ignorePerm = true;
 	}
 
 	/**
@@ -39,12 +41,29 @@ public abstract class RegionEffect {
 
 	/**
 	 * Whether the ItemStack is within #getIgnoreItems()
-	 * @param item
+	 * @param item the {@link ItemStack}
 	 * @return true if item is ignored
 	 */
 	public boolean shouldIgnore(ItemStack item) {
 		return ignoreItems.contains(item);
 	}
+	
+	/**
+	 * Gets the permission for this effect to apply.
+	 * @return permission the player requires
+	 */
+	public String getPermission() {
+		return "rpgregions.effect." + getName();
+	}
+	
+	/**
+	 * Whether the permission should be ignored or not.
+	 * @return true if permission is ignored
+	 */
+	public boolean isIgnorePerm() {
+		return ignorePerm;
+	}
+	
 	/**
 	 * User friendly name of this effect.
 	 * @return name of effect