Port Herblore plugin to Kotlin

game/plugin/skills/herblore/src/MakeUnfinishedPotionAction.kt

@@ -0,0 +1,47 @@
+import org.apollo.game.action.ActionBlock
+import org.apollo.game.action.AsyncAction
+import org.apollo.game.model.Animation
+import org.apollo.game.model.entity.Player
+import org.apollo.game.plugin.api.herblore
+import java.util.Objects
+
+class MakeUnfinishedPotionAction(
+    player: Player,
+    private val potion: UnfinishedPotion
+) : AsyncAction<Player>(1, true, player) {
+
+    override fun action(): ActionBlock = {
+        val level = mob.herblore.current
+
+        if (level < potion.level) {
+            mob.sendMessage("You need a Herblore level of ${potion.level} to make this.")
+            stop()
+        }
+
+        val inventory = mob.inventory
+
+        if (inventory.contains(VIAL_OF_WATER) && inventory.contains(potion.herb)) {
+            inventory.remove(VIAL_OF_WATER)
+            inventory.remove(potion.herb)
+
+            mob.playAnimation(MIXING_ANIMATION)
+
+            inventory.add(potion.id)
+            mob.sendMessage("You put the ${potion.herbName} into the vial of water.")
+        }
+    }
+
+    override fun equals(other: Any?): Boolean {
+        if (this === other) return true
+        if (javaClass != other?.javaClass) return false
+
+        other as MakeUnfinishedPotionAction
+        return mob == other.mob && potion == other.potion
+    }
+
+    override fun hashCode(): Int = Objects.hash(mob, potion)
+
+    private companion object {
+        private val MIXING_ANIMATION = Animation(363)
+    }
+}