Began adding modifiers

eco-core/core-plugin/src/main/java/com/willfp/ecoskills/api/StatModifier.java

@@ -0,0 +1,98 @@
+package com.willfp.ecoskills.api;
+
+import com.willfp.eco.util.NamespacedKeyUtils;
+import com.willfp.ecoskills.stats.Stat;
+import org.bukkit.NamespacedKey;
+import org.bukkit.inventory.EquipmentSlot;
+import org.jetbrains.annotations.NotNull;
+
+public class StatModifier {
+    /**
+     * The key.
+     */
+    private final NamespacedKey key;
+
+    /**
+     * The key.
+     */
+    private final NamespacedKey slotKey;
+
+    /**
+     * The stat.
+     */
+    private final Stat stat;
+
+    /**
+     * The amount.
+     */
+    private final int amount;
+
+    /**
+     * The slots.
+     */
+    private final EquipmentSlot[] slots;
+
+    /**
+     * Create a stat modifier.
+     *
+     * @param key    The key.
+     * @param stat   The stat.
+     * @param amount The amount.
+     * @param slot   The slots. (Empty is the same as all).
+     */
+    public StatModifier(@NotNull final NamespacedKey key,
+                        @NotNull final Stat stat,
+                        final int amount,
+                        @NotNull final EquipmentSlot... slot) {
+        this.key = key;
+        this.slotKey = NamespacedKeyUtils.create(key.getNamespace(), key.getKey() + "_slot");
+        this.stat = stat;
+        this.amount = amount;
+        this.slots = slot;
+    }
+
+    /**
+     * Get the key.
+     *
+     * @return The key.
+     */
+    public NamespacedKey getKey() {
+        return key;
+    }
+
+    /**
+     * Get the slot key.
+     *
+     * @return The key.
+     */
+    public NamespacedKey getSlotKey() {
+        return slotKey;
+    }
+
+    /**
+     * Get the stat.
+     *
+     * @return The stat.
+     */
+    public Stat getStat() {
+        return stat;
+    }
+
+    /**
+     * Get the amount.
+     *
+     * @return The amount.
+     */
+    public int getAmount() {
+        return amount;
+    }
+
+    /**
+     * Get the slots.
+     *
+     * @return The slots.
+     */
+    public EquipmentSlot[] getSlots() {
+        return slots;
+    }
+}

eco-core/core-plugin/src/main/kotlin/com/willfp/ecoskills/EcoSkillsItem.kt

@@ -0,0 +1,32 @@
+package com.willfp.ecoskills
+
+import com.willfp.eco.util.NamespacedKeyUtils
+import com.willfp.ecoskills.api.StatModifier
+import com.willfp.ecoskills.effects.Effect
+import com.willfp.ecoskills.skills.Skill
+import com.willfp.ecoskills.stats.Stat
+import org.bukkit.NamespacedKey
+import org.bukkit.entity.Player
+import org.bukkit.inventory.EquipmentSlot
+import org.bukkit.inventory.ItemStack
+import org.bukkit.persistence.PersistentDataAdapterContext
+import org.bukkit.persistence.PersistentDataContainer
+import org.bukkit.persistence.PersistentDataHolder
+import org.bukkit.persistence.PersistentDataType
+
+private val modifierKey: NamespacedKey = NamespacedKeyUtils.create("ecoskills", "modifiers")
+
+fun ItemStack.addStatModifier(modifier: StatModifier) {
+    val meta = this.itemMeta ?: return
+
+    val container = meta.persistentDataContainer
+
+    val context = container.adapterContext
+
+    val modifiers = container.getOrDefault(modifierKey, PersistentDataType.TAG_CONTAINER, context.newPersistentDataContainer())
+
+    modifiers.remove(modifier.key)
+    modifiers.remove(modifier.slotKey)
+    modifiers.set(modifier.key, PersistentDataType.INTEGER, modifier.amount)
+    modifiers.set(modifier.slotKey, PersistentDataType.STRING, modifier.slots.map { slot -> slot.name }.toTypedArray().joinToString { "," })
+}

eco-core/core-plugin/src/main/kotlin/com/willfp/ecoskills/skills/skills/SkillFarming.kt

@@ -35,13 +35,11 @@ class SkillFarming : Skill(
         val type = event.block.type
         val player = event.player
 
-        if (event.block.blockData !is Ageable) {
-            return
-        }
-
-        val data = event.block.blockData as Ageable
-        if (data.age < data.maximumAge) {
-            return
+        if (event.block.blockData is Ageable) {
+            val data = event.block.blockData as Ageable
+            if (data.age < data.maximumAge) {
+                return
+            }
         }
 
         val toGive = rewards[type] ?: return