Added experience talisman

eco-core/core-plugin/src/main/java/com/willfp/talismans/talismans/Talismans.java

@@ -8,6 +8,7 @@ import com.willfp.eco.util.config.updating.annotations.ConfigUpdater;
 import com.willfp.talismans.talismans.talismans.ArcheryTalisman;
 import com.willfp.talismans.talismans.talismans.CreeperTalisman;
 import com.willfp.talismans.talismans.talismans.EndTalisman;
+import com.willfp.talismans.talismans.talismans.ExperienceTalisman;
 import com.willfp.talismans.talismans.talismans.FeatherTalisman;
 import com.willfp.talismans.talismans.talismans.FlameTalisman;
 import com.willfp.talismans.talismans.talismans.NetherTalisman;
@@ -45,6 +46,7 @@ public class Talismans {
     public static final Talisman FLAME_TALISMAN = new FlameTalisman();
     public static final Talisman ARCHERY_TALISMAN = new ArcheryTalisman();
     public static final Talisman POSEIDON_TALISMAN = new PoseidonTalisman();
+    public static final Talisman EXPERIENCE_TALISMAN = new ExperienceTalisman();
 
     /**
      * Get all registered {@link Talisman}s.

eco-core/core-plugin/src/main/java/com/willfp/talismans/talismans/talismans/ExperienceTalisman.java

@@ -0,0 +1,34 @@
+package com.willfp.talismans.talismans.talismans;
+
+import com.willfp.eco.util.events.naturalexpgainevent.NaturalExpGainEvent;
+import com.willfp.talismans.talismans.Talisman;
+import com.willfp.talismans.talismans.Talismans;
+import com.willfp.talismans.talismans.util.TalismanChecks;
+import org.bukkit.entity.Player;
+import org.bukkit.event.EventHandler;
+import org.jetbrains.annotations.NotNull;
+
+public class ExperienceTalisman extends Talisman {
+    public ExperienceTalisman() {
+        super("experience_talisman");
+    }
+
+    @EventHandler
+    public void onExpChange(@NotNull final NaturalExpGainEvent event) {
+        Player player = event.getExpChangeEvent().getPlayer();
+
+        if (event.getExpChangeEvent().getAmount() < 0) {
+            return;
+        }
+
+        if (!TalismanChecks.hasTalisman(player, this)) {
+            return;
+        }
+
+        if (this.getDisabledWorlds().contains(player.getWorld())) {
+            return;
+        }
+
+        event.getExpChangeEvent().setAmount((int) Math.ceil(event.getExpChangeEvent().getAmount() * (1 + (this.getConfig().getDouble(Talismans.CONFIG_LOCATION + "percentage-bonus") / 100))));
+    }
+}

eco-core/core-plugin/src/main/java/com/willfp/talismans/talismans/util/TalismanChecks.java

@@ -94,4 +94,16 @@ public class TalismanChecks {
 
         return found;
     }
+
+    /**
+     * Get if a player has a specific talisman active.
+     *
+     * @param player   The player to query.
+     * @param talisman The talisman to search for.
+     * @return A set of all found talismans.
+     */
+    public static boolean hasTalisman(@NotNull final Player player,
+                                      @NotNull final Talisman talisman) {
+        return getTalismansOnPlayer(player).contains(talisman);
+    }
 }

eco-core/core-plugin/src/main/resources/talismans/experiencetalisman.yml

@@ -0,0 +1,27 @@
+name: "Experience Talisman"
+description: Gain 25% more experience.
+enabled: true
+
+obtaining:
+  # Recipes are left-right, top-bottom
+  # The first item is the top left, the second is top middle, and so on. The last is bottom right.
+  recipe:
+    - rotten_flesh
+    - rotten_flesh
+    - rotten_flesh
+
+    - rotten_flesh
+    - iron_block
+    - rotten_flesh
+
+    - rotten_flesh
+    - rotten_flesh
+    - rotten_flesh
+
+general-config:
+  disabled-in-worlds: []
+  # Texture is base64, https://minecraft-heads.com has a list of skulls.
+  texture: eyJ0ZXh0dXJlcyI6eyJTS0lOIjp7InVybCI6Imh0dHA6Ly90ZXh0dXJlcy5taW5lY3JhZnQubmV0L3RleHR1cmUvNmRlYWVjMzQ0YWIwOTViNDhjZWFkNzUyN2Y3ZGVlNjFiMDYzZmY3OTFmNzZhOGZhNzY2NDJjODY3NmUyMTczIn19fQ==
+
+config:
+  percentage-bonus: 25