Add basic region effects

api/src/main/java/net/islandearth/rpgregions/api/events/RegionsEffectEvent.java

@@ -0,0 +1,36 @@
+package net.islandearth.rpgregions.api.events;
+
+import org.bukkit.entity.Player;
+import org.bukkit.event.Event;
+import org.bukkit.event.HandlerList;
+
+import java.util.List;
+
+public class RegionsEffectEvent extends Event {
+
+	private static final HandlerList HANDLER_LIST = new HandlerList();
+	private final Player player;
+	private final List<String> regions;
+
+	public RegionsEffectEvent(Player player, List<String> regions) {
+		this.player = player;
+		this.regions = regions;
+	}
+
+	public Player getPlayer() {
+		return player;
+	}
+
+	public List<String> getRegions() {
+		return regions;
+	}
+
+	@Override
+	public HandlerList getHandlers() {
+		return HANDLER_LIST;
+	}
+
+	public static HandlerList getHandlerList() {
+		return HANDLER_LIST;
+	}
+}

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

@@ -0,0 +1,31 @@
+package net.islandearth.rpgregions.effects;
+
+import org.bukkit.entity.Player;
+import org.bukkit.inventory.ItemStack;
+import org.bukkit.potion.PotionEffect;
+
+import java.util.List;
+
+public class PotionRegionEffect extends RegionEffect {
+
+	private final PotionEffect potionEffect;
+
+	public PotionRegionEffect(PotionEffect potionEffect, List<ItemStack> ignoreItems) {
+		super(ignoreItems);
+		this.potionEffect = potionEffect;
+	}
+
+	public PotionEffect getPotionEffect() {
+		return potionEffect;
+	}
+
+	@Override
+	public void effect(Player player) {
+		player.addPotionEffect(potionEffect);
+	}
+
+	@Override
+	public String getName() {
+		return null;
+	}
+}

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

@@ -0,0 +1,27 @@
+package net.islandearth.rpgregions.effects;
+
+import org.bukkit.entity.Player;
+import org.bukkit.inventory.ItemStack;
+
+import java.util.List;
+
+public abstract class RegionEffect {
+
+	private final List<ItemStack> ignoreItems;
+
+	public RegionEffect(List<ItemStack> ignoreItems) {
+		this.ignoreItems = ignoreItems;
+	}
+
+	public abstract void effect(Player player);
+
+	public List<ItemStack> getIgnoreItems() {
+		return ignoreItems;
+	}
+
+	public boolean shouldIgnore(ItemStack item) {
+		return ignoreItems.contains(item);
+	}
+
+	public abstract String getName();
+}

rpgregions/src/main/java/net/islandearth/rpgregions/RPGRegions.java

@@ -9,6 +9,7 @@ import net.islandearth.languagy.language.LanguagyPluginHook;
 import net.islandearth.languagy.language.Translator;
 import net.islandearth.rpgregions.api.RPGRegionsAPI;
 import net.islandearth.rpgregions.commands.RPGRegionsCommand;
+import net.islandearth.rpgregions.effects.RegionEffect;
 import net.islandearth.rpgregions.gson.AbstractAdapter;
 import net.islandearth.rpgregions.gson.ItemStackAdapter;
 import net.islandearth.rpgregions.listener.ConnectionListener;
@@ -138,6 +139,7 @@ public final class RPGRegions extends JavaPlugin implements RPGRegionsAPI, Langu
 	public Gson getGson() {
 		return new GsonBuilder()
 				.registerTypeAdapter(DiscoveryReward.class, new AbstractAdapter<DiscoveryReward>(null))
+				.registerTypeAdapter(RegionEffect.class, new AbstractAdapter<RegionEffect>(null))
 				.registerTypeHierarchyAdapter(ItemStack.class, new ItemStackAdapter())
 				.setPrettyPrinting()
 				.serializeNulls().create();

rpgregions/src/main/java/net/islandearth/rpgregions/listener/RegionListener.java

@@ -13,6 +13,7 @@ import org.bukkit.Bukkit;
 import org.bukkit.entity.Player;
 import org.bukkit.event.EventHandler;
 import org.bukkit.event.Listener;
+import org.bukkit.inventory.ItemStack;
 
 import java.time.LocalDateTime;
 import java.time.format.DateTimeFormatter;
@@ -27,7 +28,7 @@ public class RegionListener implements Listener {
 	}
 
 	/**
-	 * Handles region discoveries on enter (WG 7).
+	 * Handles region discoveries on enter.
 	 */
 	@EventHandler
 	public void onEnter(RegionsEnterEvent ree) {
@@ -43,7 +44,20 @@ public class RegionListener implements Listener {
 						}
 					}
 
-					if (!has) {
+					ConfiguredRegion configuredRegion = plugin.getManagers().getRegionsCache().getConfiguredRegions().get(region);
+					configuredRegion.getEffects().forEach(regionEffect -> {
+						boolean canEffect = true;
+						for (ItemStack itemStack : player.getInventory()) {
+							if (!regionEffect.shouldIgnore(itemStack)) {
+								canEffect = false;
+								break;
+							}
+						}
+
+						if (canEffect) regionEffect.effect(player);
+					});
+
+					if (!has && configuredRegion.isDiscoverable()) {
 						LocalDateTime date = LocalDateTime.now();
 						DateTimeFormatter format = DateTimeFormatter.ofPattern(plugin.getConfig().getString("settings.server.discoveries.date.format"));
 

rpgregions/src/main/java/net/islandearth/rpgregions/managers/data/region/ConfiguredRegion.java

@@ -2,6 +2,7 @@ package net.islandearth.rpgregions.managers.data.region;
 
 import com.google.gson.Gson;
 import net.islandearth.rpgregions.RPGRegions;
+import net.islandearth.rpgregions.effects.RegionEffect;
 import net.islandearth.rpgregions.rewards.DiscoveryReward;
 import net.islandearth.rpgregions.utils.XMaterial;
 import net.islandearth.rpgregions.utils.XSound;
@@ -34,9 +35,11 @@ public class ConfiguredRegion {
 	private final boolean showHint;
 	private final boolean teleportable;
 	private final boolean hidden;
+	private final boolean discoverable;
+	private final List<RegionEffect> effects;
 
 	public ConfiguredRegion(@Nullable World world, String id, String customName,
-							List<DiscoveryReward> rewards, int x, int y, int z) {
+							List<DiscoveryReward> rewards, List<RegionEffect> effects, int x, int y, int z) {
 		this.world = world != null ? world.getUID() : null;
 		this.id = id;
 		this.customName = customName;
@@ -51,10 +54,13 @@ public class ConfiguredRegion {
 		this.showHint = false;
 		this.teleportable = false;
 		this.hidden = false;
+		this.discoverable = true;
+		this.effects = effects;
 	}
 
 	public ConfiguredRegion(@Nullable World world, String id, String customName,
-							List<DiscoveryReward> rewards, Sound sound, Material icon, int x, int y, int z) {
+							List<DiscoveryReward> rewards, List<RegionEffect> effects, Sound sound, Material icon,
+							int x, int y, int z) {
 		this.world = world != null ? world.getUID() : null;
 		this.id = id;
 		this.customName = customName;
@@ -69,6 +75,8 @@ public class ConfiguredRegion {
 		this.showHint = false;
 		this.teleportable = false;
 		this.hidden = false;
+		this.discoverable = true;
+		this.effects = effects;
 	}
 
 	public String getId() {
@@ -123,10 +131,18 @@ public class ConfiguredRegion {
 		return Bukkit.getWorld(world);
 	}
 
+	public boolean isDiscoverable() {
+		return discoverable;
+	}
+
 	public boolean isHidden() {
 		return hidden;
 	}
 
+	public List<RegionEffect> getEffects() {
+		return effects;
+	}
+
 	public void save(RPGRegions plugin) throws IOException {
 		File file = new File(plugin.getDataFolder() + "/regions/" + this.id + ".json");
 		Writer writer = new FileWriter(file);