Fixed startup order

This reverts commit 7adcdd572d.

build.gradle.kts

@@ -24,6 +24,7 @@ dependencies {
     implementation(project(path = ":eco-core:core-nms:v1_17_R1", configuration = "reobf"))
     implementation(project(path = ":eco-core:core-nms:v1_18_R1", configuration = "reobf"))
     implementation(project(path = ":eco-core:core-nms:v1_18_R2", configuration = "reobf"))
+    implementation(project(path = ":eco-core:core-nms:v1_19_R1", configuration = "reobf"))
 }
 
 allprojects {

eco-api/src/main/java/com/willfp/eco/core/EcoPlugin.java

@@ -304,6 +304,11 @@ public abstract class EcoPlugin extends JavaPlugin implements PluginLike {
         this.color = props.getColor();
         this.supportingExtensions = props.isSupportingExtensions();
 
+        this.proxyFactory = this.proxyPackage.equalsIgnoreCase("") ? null : Eco.getHandler().createProxyFactory(this);
+        this.logger = Eco.getHandler().createLogger(this);
+
+        this.getLogger().info("Initializing " + this.getColor() + this.getName());
+
         this.scheduler = Eco.getHandler().createScheduler(this);
         this.eventManager = Eco.getHandler().createEventManager(this);
         this.namespacedKeyFactory = Eco.getHandler().createNamespacedKeyFactory(this);
@@ -311,16 +316,12 @@ public abstract class EcoPlugin extends JavaPlugin implements PluginLike {
         this.runnableFactory = Eco.getHandler().createRunnableFactory(this);
         this.extensionLoader = Eco.getHandler().createExtensionLoader(this);
         this.configHandler = Eco.getHandler().createConfigHandler(this);
-        this.logger = Eco.getHandler().createLogger(this);
-        this.proxyFactory = this.proxyPackage.equalsIgnoreCase("") ? null : Eco.getHandler().createProxyFactory(this);
 
         this.langYml = this.createLangYml();
         this.configYml = this.createConfigYml();
 
         Eco.getHandler().addNewPlugin(this);
 
-        this.getLogger().info("Initializing " + this.getColor() + this.getName());
-
         /*
         The minimum eco version check was moved here because it's very common
         to add a lot of code in the constructor of plugins; meaning that the plugin

eco-api/src/main/java/com/willfp/eco/core/Handler.java

@@ -15,6 +15,7 @@ import com.willfp.eco.core.factory.RunnableFactory;
 import com.willfp.eco.core.fast.FastItemStack;
 import com.willfp.eco.core.gui.GUIFactory;
 import com.willfp.eco.core.integrations.placeholder.PlaceholderIntegration;
+import com.willfp.eco.core.items.SNBTHandler;
 import com.willfp.eco.core.proxy.Cleaner;
 import com.willfp.eco.core.proxy.ProxyFactory;
 import com.willfp.eco.core.scheduling.Scheduler;
@@ -282,8 +283,7 @@ public interface Handler {
      * @param <T> The mob type.
      * @return The controlled entity.
      */
-    @NotNull
+    @NotNull <T extends Mob> EntityController<T> createEntityController(@NotNull T mob);
-    <T extends Mob> EntityController<T> createEntityController(@NotNull T mob);
 
     /**
      * Adapt base PDC to extended PDC.
@@ -301,4 +301,12 @@ public interface Handler {
      */
     @NotNull
     PersistentDataContainer newPdc();
+
+    /**
+     * Get SNBT handler.
+     *
+     * @return The SNBT handler.
+     */
+    @NotNull
+    SNBTHandler getSNBTHandler();
 }

eco-api/src/main/java/com/willfp/eco/core/Prerequisite.java

@@ -41,11 +41,19 @@ public class Prerequisite {
             "Requires server to have vault"
     );
 
+    /**
+     * Requires the server to be running 1.19.
+     */
+    public static final Prerequisite HAS_1_19 = new Prerequisite(
+            () -> ProxyConstants.NMS_VERSION.contains("19"),
+            "Requires server to be running 1.19+"
+    );
+
     /**
      * Requires the server to be running 1.18.
      */
     public static final Prerequisite HAS_1_18 = new Prerequisite(
-            () -> ProxyConstants.NMS_VERSION.contains("18"),
+            () -> ProxyConstants.NMS_VERSION.contains("18") || HAS_1_19.isMet(),
             "Requires server to be running 1.18+"
     );
 

eco-api/src/main/java/com/willfp/eco/core/gui/slot/Slot.java

@@ -28,6 +28,26 @@ public interface Slot {
      */
     boolean isCaptive();
 
+    /**
+     * If the slot is not captive for a player.
+     *
+     * @param player The player.
+     * @return If not captive for the player.
+     */
+    default boolean isNotCaptiveFor(@NotNull Player player) {
+        return false;
+    }
+
+    /**
+     * If the slot is captive from empty.
+     * If true, a captive item will be returned even if the item is the same as the rendered item.
+     *
+     * @return If captive from empty.
+     */
+    default boolean isCaptiveFromEmpty() {
+        return false;
+    }
+
     /**
      * Create a builder for an ItemStack.
      *

eco-api/src/main/java/com/willfp/eco/core/gui/slot/SlotBuilder.java

@@ -3,10 +3,12 @@ package com.willfp.eco.core.gui.slot;
 import com.willfp.eco.core.gui.slot.functional.SlotHandler;
 import com.willfp.eco.core.gui.slot.functional.SlotModifier;
 import com.willfp.eco.core.gui.slot.functional.SlotUpdater;
+import org.bukkit.entity.Player;
 import org.bukkit.event.inventory.InventoryClickEvent;
 import org.jetbrains.annotations.NotNull;
 
 import java.util.function.BiConsumer;
+import java.util.function.Predicate;
 
 /**
  * Builder to create slots.
@@ -102,6 +104,14 @@ public interface SlotBuilder {
      */
     SlotBuilder onMiddleClick(@NotNull SlotHandler handler);
 
+    /**
+     * Prevent captive for players that match a predicate.
+     *
+     * @param predicate The predicate. Returns true when the slot should not be captive.
+     * @return The builder.
+     */
+    SlotBuilder notCaptiveFor(@NotNull Predicate<Player> predicate);
+
     /**
      * Modify the ItemStack.
      *
@@ -130,7 +140,17 @@ public interface SlotBuilder {
      *
      * @return The builder.
      */
-    SlotBuilder setCaptive();
+    default SlotBuilder setCaptive() {
+        return setCaptive(false);
+    }
+
+    /**
+     * Set slot to be a captive slot.
+     *
+     * @param fromEmpty If an item with the same output as the rendered item counts as captive.
+     * @return The builder.
+     */
+    SlotBuilder setCaptive(boolean fromEmpty);
 
     /**
      * Build the slot.

eco-api/src/main/java/com/willfp/eco/core/items/Items.java

@@ -2,6 +2,7 @@ package com.willfp.eco.core.items;
 
 import com.github.benmanes.caffeine.cache.Caffeine;
 import com.github.benmanes.caffeine.cache.LoadingCache;
+import com.willfp.eco.core.Eco;
 import com.willfp.eco.core.fast.FastItemStack;
 import com.willfp.eco.core.items.args.LookupArgParser;
 import com.willfp.eco.core.items.provider.ItemProvider;
@@ -185,6 +186,10 @@ public final class Items {
      */
     @NotNull
     public static TestableItem lookup(@NotNull final String key) {
+        if (key.startsWith("{")) {
+            return Eco.getHandler().getSNBTHandler().createTestable(key);
+        }
+
         return ITEMS_LOOKUP_HANDLER.parseKey(key);
     }
 
@@ -520,6 +525,28 @@ public final class Items {
         return fis.unwrap();
     }
 
+    /**
+     * Convert item to SNBT.
+     *
+     * @param itemStack The item.
+     * @return The NBT string.
+     */
+    @NotNull
+    public static String toSNBT(@NotNull final ItemStack itemStack) {
+        return Eco.getHandler().getSNBTHandler().toSNBT(itemStack);
+    }
+
+    /**
+     * Get item from SNBT.
+     *
+     * @param snbt The NBT string.
+     * @return The ItemStack, or null if invalid.
+     */
+    @Nullable
+    public static ItemStack fromSNBT(@NotNull final String snbt) {
+        return Eco.getHandler().getSNBTHandler().fromSNBT(snbt);
+    }
+
     private Items() {
         throw new UnsupportedOperationException("This is a utility class and cannot be instantiated");
     }

eco-api/src/main/java/com/willfp/eco/core/items/SNBTHandler.java

@@ -0,0 +1,41 @@
+package com.willfp.eco.core.items;
+
+import com.willfp.eco.core.Eco;
+import org.bukkit.inventory.ItemStack;
+import org.jetbrains.annotations.ApiStatus;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+/**
+ * API to handle SNBT conversion.
+ */
+@ApiStatus.Internal
+@Eco.HandlerComponent
+public interface SNBTHandler {
+    /**
+     * Get item from SNBT.
+     *
+     * @param snbt The NBT string.
+     * @return The ItemStack, or null if invalid.
+     */
+    @Nullable
+    ItemStack fromSNBT(@NotNull String snbt);
+
+    /**
+     * Convert item to SNBT.
+     *
+     * @param itemStack The item.
+     * @return The NBT string.
+     */
+    @NotNull
+    String toSNBT(@NotNull ItemStack itemStack);
+
+    /**
+     * Make TestableItem from SNBT.
+     *
+     * @param snbt The NBT string.
+     * @return The TestableItem.
+     */
+    @NotNull
+    TestableItem createTestable(@NotNull String snbt);
+}

eco-api/src/main/java/com/willfp/eco/core/proxy/ProxyConstants.java

@@ -20,7 +20,8 @@ public final class ProxyConstants {
     public static final List<String> SUPPORTED_VERSIONS = Arrays.asList(
             "v1_17_R1",
             "v1_18_R1",
-            "v1_18_R2"
+            "v1_18_R2",
+            "v1_19_R1"
     );
 
     private ProxyConstants() {

eco-api/src/main/java/com/willfp/eco/util/MenuUtils.java

@@ -20,6 +20,17 @@ public final class MenuUtils {
         return new Pair<>(row + 1, column + 1);
     }
 
+    /**
+     * Convert row and column to 0-53 slot.
+     *
+     * @param row    The row.
+     * @param column The column.
+     * @return The slot.
+     */
+    public static int rowColumnToSlot(final int row, final int column) {
+        return (column - 1) + ((row - 1) * 9);
+    }
+
     private MenuUtils() {
         throw new UnsupportedOperationException("This is a utility class and cannot be instantiated");
     }

eco-api/src/main/kotlin/com/willfp/eco/core/gui/GUIHelpers.kt

@@ -32,6 +32,10 @@ fun SlotBuilder.onShiftRightClick(action: (InventoryClickEvent, Slot, Menu) -> U
 fun SlotBuilder.onMiddleClick(action: (InventoryClickEvent, Slot, Menu) -> Unit): SlotBuilder =
     this.onMiddleClick { a, b, c -> action(a, b, c) }
 
+/** @see SlotBuilder.notCaptiveFor */
+fun SlotBuilder.notCaptiveFor(test: (Player) -> Boolean): SlotBuilder =
+    this.notCaptiveFor { test(it) }
+
 /**
  * @see SlotBuilder.setModifier
  * @deprecated Use SlotUpdater instead.

eco-core/core-backend/src/main/kotlin/com/willfp/eco/internal/gui/menu/EcoMenu.kt

@@ -49,11 +49,13 @@ class EcoMenu(
 
         player.openInventory(inventory)
         MenuHandler.registerInventory(inventory, this, player)
+        inventory.asRenderedInventory()?.generateCaptive()
         return inventory
     }
 
     fun handleClose(event: InventoryCloseEvent) {
         onClose.handle(event, this)
+        event.inventory.asRenderedInventory()?.generateCaptive()
         MenuHandler.unregisterInventory(event.inventory)
     }
 

eco-core/core-backend/src/main/kotlin/com/willfp/eco/internal/gui/menu/MenuRenderedInventory.kt

@@ -34,7 +34,7 @@ class MenuRenderedInventory(
         menu.runOnRender(player)
     }
 
-    private fun generateCaptive() {
+    fun generateCaptive() {
         captiveItems.clear()
         for (i in 0 until inventory.size) {
             val (row, column) = MenuUtils.convertSlotToRowColumn(i)
@@ -43,7 +43,17 @@ class MenuRenderedInventory(
                 val renderedItem = slot.getItemStack(player)
                 val itemStack = inventory.getItem(i) ?: continue
 
-                if (itemStack == renderedItem || itemStack.type.isAir || itemStack.amount == 0) {
+                if (slot.isNotCaptiveFor(player)) {
+                    continue
+                }
+
+                if (!slot.isCaptiveFromEmpty) {
+                    if (itemStack == renderedItem) {
+                        continue
+                    }
+                }
+
+                if (itemStack.type.isAir || itemStack.amount == 0) {
                     continue
                 }
 

eco-core/core-backend/src/main/kotlin/com/willfp/eco/internal/gui/slot/EcoCaptiveSlot.kt

@@ -2,23 +2,36 @@ package com.willfp.eco.internal.gui.slot
 
 import com.willfp.eco.core.gui.slot.functional.SlotHandler
 import com.willfp.eco.core.gui.slot.functional.SlotProvider
+import org.bukkit.entity.Player
 
 class EcoCaptiveSlot(
-    provider: SlotProvider
+    provider: SlotProvider,
+    private val captiveFromEmpty: Boolean,
+    private val notCaptiveFor: (Player) -> Boolean
 ) : EcoSlot(
     provider,
-    allowMovingItem,
+    captiveWithTest(notCaptiveFor),
-    allowMovingItem,
+    captiveWithTest(notCaptiveFor),
-    allowMovingItem,
+    captiveWithTest(notCaptiveFor),
-    allowMovingItem,
+    captiveWithTest(notCaptiveFor),
-    allowMovingItem,
+    captiveWithTest(notCaptiveFor),
     { _, _, prev -> prev }
 ) {
     override fun isCaptive(): Boolean {
         return true
     }
+
+    override fun isCaptiveFromEmpty(): Boolean {
+        return captiveFromEmpty
+    }
+
+    override fun isNotCaptiveFor(player: Player): Boolean {
+        return notCaptiveFor(player)
+    }
 }
 
-private val allowMovingItem = SlotHandler { event, _, _ ->
+private fun captiveWithTest(test: (Player) -> Boolean): SlotHandler {
-    event.isCancelled = false
+    return SlotHandler { event, _, _ ->
-}
+        event.isCancelled = test(event.whoClicked as Player)
+    }
+}

eco-core/core-backend/src/main/kotlin/com/willfp/eco/internal/gui/slot/EcoSlotBuilder.kt

@@ -1,25 +1,39 @@
 package com.willfp.eco.internal.gui.slot
 
+import com.willfp.eco.core.gui.menu.Menu
 import com.willfp.eco.core.gui.slot.Slot
 import com.willfp.eco.core.gui.slot.SlotBuilder
 import com.willfp.eco.core.gui.slot.functional.SlotHandler
 import com.willfp.eco.core.gui.slot.functional.SlotProvider
 import com.willfp.eco.core.gui.slot.functional.SlotUpdater
+import org.bukkit.entity.Player
+import org.bukkit.event.inventory.InventoryClickEvent
+import java.util.function.Predicate
+
+internal object NoOpSlot : SlotHandler {
+    override fun handle(event: InventoryClickEvent, slot: Slot, menu: Menu) {
+
+    }
+
+    override fun equals(other: Any?): Boolean {
+        return other is NoOpSlot
+    }
+}
+
+internal class NoOpForPlayer
 
 class EcoSlotBuilder(private val provider: SlotProvider) : SlotBuilder {
     private var captive = false
+    private var captiveFromEmpty = false
     private var updater: SlotUpdater = SlotUpdater { player, menu, _ -> provider.provide(player, menu) }
 
-    private var onLeftClick =
+    private var onLeftClick: SlotHandler = NoOpSlot
-        SlotHandler { _, _, _ -> run { } }
+    private var onRightClick: SlotHandler = NoOpSlot
-    private var onRightClick =
+    private var onShiftLeftClick: SlotHandler = NoOpSlot
-        SlotHandler { _, _, _ -> run { } }
+    private var onShiftRightClick: SlotHandler = NoOpSlot
-    private var onShiftLeftClick =
+    private var onMiddleClick: SlotHandler = NoOpSlot
-        SlotHandler { _, _, _ -> run { } }
+
-    private var onShiftRightClick =
+    private var notCaptiveFor: (Player) -> Boolean = { false }
-        SlotHandler { _, _, _ -> run { } }
-    private var onMiddleClick =
-        SlotHandler { _, _, _ -> run { } }
 
     override fun onLeftClick(action: SlotHandler): SlotBuilder {
         onLeftClick = action
@@ -46,8 +60,14 @@ class EcoSlotBuilder(private val provider: SlotProvider) : SlotBuilder {
         return this
     }
 
-    override fun setCaptive(): SlotBuilder {
+    override fun notCaptiveFor(predicate: Predicate<Player>): SlotBuilder {
+        notCaptiveFor = { predicate.test(it) }
+        return this
+    }
+
+    override fun setCaptive(fromEmpty: Boolean): SlotBuilder {
         captive = true
+        captiveFromEmpty = fromEmpty
         return this
     }
 
@@ -58,9 +78,21 @@ class EcoSlotBuilder(private val provider: SlotProvider) : SlotBuilder {
 
     override fun build(): Slot {
         return if (captive) {
-            EcoCaptiveSlot(provider)
+            EcoCaptiveSlot(
+                provider,
+                captiveFromEmpty,
+                notCaptiveFor
+            )
         } else {
-            EcoSlot(provider, onLeftClick, onRightClick, onShiftLeftClick, onShiftRightClick, onMiddleClick, updater)
+            EcoSlot(
+                provider,
+                onLeftClick,
+                onRightClick,
+                onShiftLeftClick,
+                onShiftRightClick,
+                onMiddleClick,
+                updater
+            )
         }
     }
-}
+}

eco-core/core-nms/v1_17_R1/src/main/kotlin/com/willfp/eco/internal/spigot/proxy/v1_17_R1/SNBTConverter.kt

@@ -0,0 +1,54 @@
+package com.willfp.eco.internal.spigot.proxy.v1_17_R1
+
+import com.willfp.eco.core.items.TestableItem
+import com.willfp.eco.core.recipe.parts.EmptyTestableItem
+import com.willfp.eco.internal.spigot.proxy.SNBTConverterProxy
+import net.minecraft.nbt.CompoundTag
+import net.minecraft.nbt.SnbtPrinterTagVisitor
+import net.minecraft.nbt.TagParser
+import org.bukkit.craftbukkit.v1_17_R1.inventory.CraftItemStack
+import org.bukkit.inventory.ItemStack
+
+class SNBTConverter : SNBTConverterProxy {
+    override fun fromSNBT(snbt: String): ItemStack? {
+        val nbt = runCatching { TagParser.parseTag(snbt) }.getOrNull() ?: return null
+        val nms = net.minecraft.world.item.ItemStack.of(nbt)
+        return CraftItemStack.asBukkitCopy(nms)
+    }
+
+    override fun toSNBT(itemStack: ItemStack): String {
+        val nms = CraftItemStack.asNMSCopy(itemStack)
+        return SnbtPrinterTagVisitor().visit(nms.save(CompoundTag()))
+    }
+
+    override fun makeSNBTTestable(snbt: String): TestableItem {
+        val nbt = runCatching { TagParser.parseTag(snbt) }.getOrNull() ?: return EmptyTestableItem()
+        val nms = net.minecraft.world.item.ItemStack.of(nbt)
+        if (nms == net.minecraft.world.item.ItemStack.EMPTY) {
+            return EmptyTestableItem()
+        }
+
+        nbt.remove("Count")
+
+        return SNBTTestableItem(nbt)
+    }
+
+    class SNBTTestableItem(
+        private val tag: CompoundTag
+    ) : TestableItem {
+        override fun matches(itemStack: ItemStack?): Boolean {
+            if (itemStack == null) {
+                return false
+            }
+
+            val nms = CraftItemStack.asNMSCopy(itemStack)
+            val nmsTag = nms.save(CompoundTag())
+            nmsTag.remove("Count")
+            return tag.copy().merge(nmsTag) == nmsTag
+        }
+
+        override fun getItem(): ItemStack {
+            return CraftItemStack.asBukkitCopy(net.minecraft.world.item.ItemStack.of(tag))
+        }
+    }
+}

eco-core/core-nms/v1_18_R1/src/main/kotlin/com/willfp/eco/internal/spigot/proxy/v1_18_R1/SNBTConverter.kt

@@ -0,0 +1,54 @@
+package com.willfp.eco.internal.spigot.proxy.v1_18_R1
+
+import com.willfp.eco.core.items.TestableItem
+import com.willfp.eco.core.recipe.parts.EmptyTestableItem
+import com.willfp.eco.internal.spigot.proxy.SNBTConverterProxy
+import net.minecraft.nbt.CompoundTag
+import net.minecraft.nbt.SnbtPrinterTagVisitor
+import net.minecraft.nbt.TagParser
+import org.bukkit.craftbukkit.v1_18_R1.inventory.CraftItemStack
+import org.bukkit.inventory.ItemStack
+
+class SNBTConverter : SNBTConverterProxy {
+    override fun fromSNBT(snbt: String): ItemStack? {
+        val nbt = runCatching { TagParser.parseTag(snbt) }.getOrNull() ?: return null
+        val nms = net.minecraft.world.item.ItemStack.of(nbt)
+        return CraftItemStack.asBukkitCopy(nms)
+    }
+
+    override fun toSNBT(itemStack: ItemStack): String {
+        val nms = CraftItemStack.asNMSCopy(itemStack)
+        return SnbtPrinterTagVisitor().visit(nms.save(CompoundTag()))
+    }
+
+    override fun makeSNBTTestable(snbt: String): TestableItem {
+        val nbt = runCatching { TagParser.parseTag(snbt) }.getOrNull() ?: return EmptyTestableItem()
+        val nms = net.minecraft.world.item.ItemStack.of(nbt)
+        if (nms == net.minecraft.world.item.ItemStack.EMPTY) {
+            return EmptyTestableItem()
+        }
+
+        nbt.remove("Count")
+
+        return SNBTTestableItem(nbt)
+    }
+
+    class SNBTTestableItem(
+        private val tag: CompoundTag
+    ) : TestableItem {
+        override fun matches(itemStack: ItemStack?): Boolean {
+            if (itemStack == null) {
+                return false
+            }
+
+            val nms = CraftItemStack.asNMSCopy(itemStack)
+            val nmsTag = nms.save(CompoundTag())
+            nmsTag.remove("Count")
+            return tag.copy().merge(nmsTag) == nmsTag
+        }
+
+        override fun getItem(): ItemStack {
+            return CraftItemStack.asBukkitCopy(net.minecraft.world.item.ItemStack.of(tag))
+        }
+    }
+}

eco-core/core-nms/v1_18_R2/src/main/kotlin/com/willfp/eco/internal/spigot/proxy/v1_18_R2/SNBTConverter.kt

@@ -0,0 +1,54 @@
+package com.willfp.eco.internal.spigot.proxy.v1_18_R2
+
+import com.willfp.eco.core.items.TestableItem
+import com.willfp.eco.core.recipe.parts.EmptyTestableItem
+import com.willfp.eco.internal.spigot.proxy.SNBTConverterProxy
+import net.minecraft.nbt.CompoundTag
+import net.minecraft.nbt.SnbtPrinterTagVisitor
+import net.minecraft.nbt.TagParser
+import org.bukkit.craftbukkit.v1_18_R2.inventory.CraftItemStack
+import org.bukkit.inventory.ItemStack
+
+class SNBTConverter : SNBTConverterProxy {
+    override fun fromSNBT(snbt: String): ItemStack? {
+        val nbt = runCatching { TagParser.parseTag(snbt) }.getOrNull() ?: return null
+        val nms = net.minecraft.world.item.ItemStack.of(nbt)
+        return CraftItemStack.asBukkitCopy(nms)
+    }
+
+    override fun toSNBT(itemStack: ItemStack): String {
+        val nms = CraftItemStack.asNMSCopy(itemStack)
+        return SnbtPrinterTagVisitor().visit(nms.save(CompoundTag()))
+    }
+
+    override fun makeSNBTTestable(snbt: String): TestableItem {
+        val nbt = runCatching { TagParser.parseTag(snbt) }.getOrNull() ?: return EmptyTestableItem()
+        val nms = net.minecraft.world.item.ItemStack.of(nbt)
+        if (nms == net.minecraft.world.item.ItemStack.EMPTY) {
+            return EmptyTestableItem()
+        }
+
+        nbt.remove("Count")
+
+        return SNBTTestableItem(nbt)
+    }
+
+    class SNBTTestableItem(
+        private val tag: CompoundTag
+    ) : TestableItem {
+        override fun matches(itemStack: ItemStack?): Boolean {
+            if (itemStack == null) {
+                return false
+            }
+
+            val nms = CraftItemStack.asNMSCopy(itemStack)
+            val nmsTag = nms.save(CompoundTag())
+            nmsTag.remove("Count")
+            return tag.copy().merge(nmsTag) == nmsTag
+        }
+
+        override fun getItem(): ItemStack {
+            return CraftItemStack.asBukkitCopy(net.minecraft.world.item.ItemStack.of(tag))
+        }
+    }
+}

eco-core/core-nms/v1_19_R1/build.gradle.kts

@@ -0,0 +1,39 @@
+plugins {
+    id("io.papermc.paperweight.userdev") version "1.3.6"
+}
+
+group = "com.willfp"
+version = rootProject.version
+
+dependencies {
+    implementation(project(":eco-core:core-nms:nms-common"))
+    paperDevBundle("1.19-R0.1-SNAPSHOT")
+
+    implementation("net.kyori:adventure-text-minimessage:4.11.0") {
+        version {
+            strictly("4.11.0")
+        }
+        exclude(group = "net.kyori", module = "adventure-api")
+    }
+}
+
+tasks {
+    build {
+        dependsOn(reobfJar)
+    }
+
+    reobfJar {
+        mustRunAfter(shadowJar)
+    }
+
+    shadowJar {
+        relocate(
+            "com.willfp.eco.internal.spigot.proxy.common",
+            "com.willfp.eco.internal.spigot.proxy.v1_19_R1.common"
+        )
+        relocate(
+            "net.kyori.adventure.text.minimessage",
+            "com.willfp.eco.internal.spigot.proxy.v1_19_R1.minimessage"
+        )
+    }
+}

eco-core/core-nms/v1_19_R1/src/main/kotlin/com/willfp/eco/internal/spigot/proxy/v1_19_R1/AutoCraft.kt

@@ -0,0 +1,15 @@
+package com.willfp.eco.internal.spigot.proxy.v1_19_R1
+
+import com.willfp.eco.internal.spigot.proxy.AutoCraftProxy
+import net.minecraft.network.protocol.game.ClientboundPlaceGhostRecipePacket
+import net.minecraft.resources.ResourceLocation
+
+class AutoCraft : AutoCraftProxy {
+    override fun modifyPacket(packet: Any) {
+        val recipePacket = packet as ClientboundPlaceGhostRecipePacket
+        val fKey = recipePacket.javaClass.getDeclaredField("b")
+        fKey.isAccessible = true
+        val key = fKey[recipePacket] as ResourceLocation
+        fKey[recipePacket] = ResourceLocation(key.namespace, key.path + "_displayed")
+    }
+}

eco-core/core-nms/v1_19_R1/src/main/kotlin/com/willfp/eco/internal/spigot/proxy/v1_19_R1/ChatComponent.kt

@@ -0,0 +1,93 @@
+package com.willfp.eco.internal.spigot.proxy.v1_19_R1
+
+import com.willfp.eco.core.display.Display
+import com.willfp.eco.internal.spigot.proxy.ChatComponentProxy
+import net.kyori.adventure.nbt.api.BinaryTagHolder
+import net.kyori.adventure.text.BuildableComponent
+import net.kyori.adventure.text.Component
+import net.kyori.adventure.text.TranslatableComponent
+import net.kyori.adventure.text.event.HoverEvent
+import net.kyori.adventure.text.serializer.gson.GsonComponentSerializer
+import net.minecraft.nbt.TagParser
+import org.bukkit.Material
+import org.bukkit.craftbukkit.v1_19_R1.inventory.CraftItemStack
+import org.bukkit.entity.Player
+import org.bukkit.inventory.ItemStack
+
+@Suppress("UNCHECKED_CAST")
+class ChatComponent : ChatComponentProxy {
+    private val gsonComponentSerializer = GsonComponentSerializer.gson()
+
+    override fun modifyComponent(obj: Any, player: Player): Any {
+        if (obj !is net.minecraft.network.chat.Component) {
+            return obj
+        }
+
+        val component = gsonComponentSerializer.deserialize(
+            net.minecraft.network.chat.Component.Serializer.toJson(
+                obj
+            )
+        ).asComponent() as BuildableComponent<*, *>
+
+        val newComponent = modifyBaseComponent(component, player)
+
+        return net.minecraft.network.chat.Component.Serializer.fromJson(
+            gsonComponentSerializer.serialize(newComponent.asComponent())
+        ) ?: obj
+    }
+
+    private fun modifyBaseComponent(baseComponent: Component, player: Player): Component {
+        var component = baseComponent
+
+        if (component is TranslatableComponent) {
+            val args = mutableListOf<Component>()
+            for (arg in component.args()) {
+                args.add(modifyBaseComponent(arg, player))
+            }
+            component = component.args(args)
+        }
+
+        val children = mutableListOf<Component>()
+        for (child in component.children()) {
+            children.add(modifyBaseComponent(child, player))
+        }
+        component = component.children(children)
+
+        val hoverEvent: HoverEvent<Any> = component.style().hoverEvent() as HoverEvent<Any>? ?: return component
+
+        val showItem = hoverEvent.value()
+
+        if (showItem !is HoverEvent.ShowItem) {
+            return component
+        }
+
+        val newShowItem = showItem.nbt(
+            BinaryTagHolder.binaryTagHolder(
+                CraftItemStack.asNMSCopy(
+                    Display.display(
+                        CraftItemStack.asBukkitCopy(
+                            CraftItemStack.asNMSCopy(
+                                ItemStack(
+                                    Material.matchMaterial(
+                                        showItem.item()
+                                            .toString()
+                                    ) ?: return component,
+                                    showItem.count()
+                                )
+                            ).apply {
+                                this.tag = TagParser.parseTag(
+                                    showItem.nbt()?.string() ?: return component
+                                ) ?: return component
+                            }
+                        ),
+                        player
+                    )
+                ).orCreateTag.toString()
+            )
+        )
+
+        val newHover = hoverEvent.value(newShowItem)
+        val style = component.style().hoverEvent(newHover)
+        return component.style(style)
+    }
+}

eco-core/core-nms/v1_19_R1/src/main/kotlin/com/willfp/eco/internal/spigot/proxy/v1_19_R1/CommonsInitializer.kt

@@ -0,0 +1,135 @@
+package com.willfp.eco.internal.spigot.proxy.v1_19_R1
+
+import com.willfp.eco.internal.spigot.proxy.CommonsInitializerProxy
+import com.willfp.eco.internal.spigot.proxy.common.CommonsProvider
+import net.minecraft.nbt.CompoundTag
+import net.minecraft.nbt.Tag
+import net.minecraft.resources.ResourceLocation
+import net.minecraft.world.entity.PathfinderMob
+import org.bukkit.Bukkit
+import org.bukkit.NamespacedKey
+import org.bukkit.craftbukkit.v1_19_R1.CraftServer
+import org.bukkit.craftbukkit.v1_19_R1.entity.CraftEntity
+import org.bukkit.craftbukkit.v1_19_R1.entity.CraftMob
+import org.bukkit.craftbukkit.v1_19_R1.inventory.CraftItemStack
+import org.bukkit.craftbukkit.v1_19_R1.persistence.CraftPersistentDataContainer
+import org.bukkit.craftbukkit.v1_19_R1.persistence.CraftPersistentDataTypeRegistry
+import org.bukkit.craftbukkit.v1_19_R1.util.CraftMagicNumbers
+import org.bukkit.craftbukkit.v1_19_R1.util.CraftNamespacedKey
+import org.bukkit.entity.LivingEntity
+import org.bukkit.entity.Mob
+import org.bukkit.inventory.ItemStack
+import org.bukkit.persistence.PersistentDataContainer
+import java.lang.reflect.Field
+
+class CommonsInitializer : CommonsInitializerProxy {
+    override fun init() {
+        CommonsProvider.setIfNeeded(CommonsProviderImpl)
+    }
+
+    object CommonsProviderImpl : CommonsProvider {
+        private val cisHandle: Field = CraftItemStack::class.java.getDeclaredField("handle").apply {
+            isAccessible = true
+        }
+
+        private val pdcRegsitry = Class.forName("org.bukkit.craftbukkit.v1_19_R1.inventory.CraftMetaItem")
+            .getDeclaredField("DATA_TYPE_REGISTRY")
+            .apply { isAccessible = true }
+            .get(null) as CraftPersistentDataTypeRegistry
+
+        override val nbtTagString = CraftMagicNumbers.NBT.TAG_STRING
+
+        override fun toPathfinderMob(mob: Mob): PathfinderMob? {
+            val craft = mob as? CraftMob ?: return null
+            return craft.handle as? PathfinderMob
+        }
+
+        override fun toResourceLocation(namespacedKey: NamespacedKey): ResourceLocation =
+            CraftNamespacedKey.toMinecraft(namespacedKey)
+
+        override fun asNMSStack(itemStack: ItemStack): net.minecraft.world.item.ItemStack {
+            return if (itemStack !is CraftItemStack) {
+                CraftItemStack.asNMSCopy(itemStack)
+            } else {
+                cisHandle[itemStack] as net.minecraft.world.item.ItemStack? ?: CraftItemStack.asNMSCopy(itemStack)
+            }
+        }
+
+        override fun asBukkitStack(itemStack: net.minecraft.world.item.ItemStack): ItemStack {
+            return CraftItemStack.asBukkitCopy(itemStack)
+        }
+
+        override fun mergeIfNeeded(itemStack: ItemStack, nmsStack: net.minecraft.world.item.ItemStack) {
+            if (itemStack !is CraftItemStack) {
+                itemStack.itemMeta = CraftItemStack.asCraftMirror(nmsStack).itemMeta
+            }
+        }
+
+        override fun toBukkitEntity(entity: net.minecraft.world.entity.LivingEntity): LivingEntity? =
+            CraftEntity.getEntity(Bukkit.getServer() as CraftServer, entity) as? LivingEntity
+
+        override fun makePdc(tag: CompoundTag, base: Boolean): PersistentDataContainer {
+            fun emptyPdc(): CraftPersistentDataContainer = CraftPersistentDataContainer(pdcRegsitry)
+
+            fun CompoundTag?.toPdc(): PersistentDataContainer {
+                val pdc = emptyPdc()
+                this ?: return pdc
+                val keys = this.allKeys
+                for (key in keys) {
+                    pdc.put(key, this[key])
+                }
+
+                return pdc
+            }
+
+            return if (base) {
+                tag.toPdc()
+            } else {
+                if (tag.contains("PublicBukkitValues")) {
+                    tag.getCompound("PublicBukkitValues").toPdc()
+                } else {
+                    emptyPdc()
+                }
+            }
+        }
+
+        override fun setPdc(
+            tag: CompoundTag,
+            pdc: PersistentDataContainer?,
+            item: net.minecraft.world.item.ItemStack?
+        ) {
+            fun CraftPersistentDataContainer.toTag(): CompoundTag {
+                val compound = CompoundTag()
+                val rawPublicMap: Map<String, Tag> = this.raw
+                for ((key, value) in rawPublicMap) {
+                    compound.put(key, value)
+                }
+
+                return compound
+            }
+
+            val container = when (pdc) {
+                is CraftPersistentDataContainer? -> pdc
+                else -> null
+            }
+
+            if (item != null) {
+                if (container != null && !container.isEmpty) {
+                    for (key in tag.allKeys.toSet()) {
+                        tag.remove(key)
+                    }
+
+                    tag.merge(container.toTag())
+                } else {
+                    item.setTag(null)
+                }
+            } else {
+                if (container != null && !container.isEmpty) {
+                    tag.put("PublicBukkitValues", container.toTag())
+                } else {
+                    tag.remove("PublicBukkitValues")
+                }
+            }
+        }
+    }
+}

eco-core/core-nms/v1_19_R1/src/main/kotlin/com/willfp/eco/internal/spigot/proxy/v1_19_R1/DummyEntityFactory.kt

@@ -0,0 +1,16 @@
+package com.willfp.eco.internal.spigot.proxy.v1_19_R1
+
+import com.willfp.eco.internal.entities.EcoDummyEntity
+import com.willfp.eco.internal.spigot.proxy.DummyEntityFactoryProxy
+import org.bukkit.Location
+import org.bukkit.craftbukkit.v1_19_R1.CraftWorld
+import org.bukkit.entity.Entity
+import org.bukkit.entity.EntityType
+
+class DummyEntityFactory : DummyEntityFactoryProxy {
+    override fun createDummyEntity(location: Location): Entity {
+        val world = location.world as CraftWorld
+        @Suppress("UsePropertyAccessSyntax")
+        return EcoDummyEntity(world.createEntity(location, EntityType.ZOMBIE.entityClass).getBukkitEntity())
+    }
+}

eco-core/core-nms/v1_19_R1/src/main/kotlin/com/willfp/eco/internal/spigot/proxy/v1_19_R1/EntityControllerFactory.kt

@@ -0,0 +1,12 @@
+package com.willfp.eco.internal.spigot.proxy.v1_19_R1
+
+import com.willfp.eco.core.entities.ai.EntityController
+import com.willfp.eco.internal.spigot.proxy.EntityControllerFactoryProxy
+import com.willfp.eco.internal.spigot.proxy.common.ai.EcoEntityController
+import org.bukkit.entity.Mob
+
+class EntityControllerFactory : EntityControllerFactoryProxy {
+    override fun <T : Mob> createEntityController(entity: T): EntityController<T> {
+        return EcoEntityController(entity)
+    }
+}

eco-core/core-nms/v1_19_R1/src/main/kotlin/com/willfp/eco/internal/spigot/proxy/v1_19_R1/ExtendedPersistentDataContainerFactory.kt

@@ -0,0 +1,70 @@
+package com.willfp.eco.internal.spigot.proxy.v1_19_R1
+
+import com.willfp.eco.core.data.ExtendedPersistentDataContainer
+import com.willfp.eco.internal.spigot.proxy.ExtendedPersistentDataContainerFactoryProxy
+import net.minecraft.nbt.Tag
+import org.bukkit.craftbukkit.v1_19_R1.persistence.CraftPersistentDataContainer
+import org.bukkit.craftbukkit.v1_19_R1.persistence.CraftPersistentDataTypeRegistry
+import org.bukkit.persistence.PersistentDataContainer
+import org.bukkit.persistence.PersistentDataType
+
+class ExtendedPersistentDataContainerFactory: ExtendedPersistentDataContainerFactoryProxy {
+    @Suppress("UNCHECKED_CAST")
+    private val registry: CraftPersistentDataTypeRegistry =
+        CraftPersistentDataContainer::class.java.getDeclaredField("registry")
+            .apply { isAccessible = true }.get(null) as CraftPersistentDataTypeRegistry
+
+    override fun adapt(pdc: PersistentDataContainer): ExtendedPersistentDataContainer {
+        return when (pdc) {
+            is CraftPersistentDataContainer -> EcoPersistentDataContainer(pdc)
+            else -> throw IllegalArgumentException("Custom PDC instance is not supported!")
+        }
+    }
+
+    override fun newPdc(): PersistentDataContainer {
+        return CraftPersistentDataContainer(registry)
+    }
+
+    inner class EcoPersistentDataContainer(
+        val handle: CraftPersistentDataContainer
+    ) : ExtendedPersistentDataContainer {
+        @Suppress("UNCHECKED_CAST")
+        private val customDataTags: MutableMap<String, Tag> =
+            CraftPersistentDataContainer::class.java.getDeclaredField("customDataTags")
+                .apply { isAccessible = true }.get(handle) as MutableMap<String, Tag>
+
+        override fun <T : Any, Z : Any> set(key: String, dataType: PersistentDataType<T, Z>, value: Z) {
+            customDataTags[key] = registry.wrap(dataType.primitiveType, dataType.toPrimitive(value, handle.adapterContext))
+        }
+
+        override fun <T : Any, Z : Any> has(key: String, dataType: PersistentDataType<T, Z>): Boolean {
+            val value = customDataTags[key] ?: return false
+            return registry.isInstanceOf(dataType.primitiveType, value)
+        }
+
+        override fun <T : Any, Z : Any> get(key: String, dataType: PersistentDataType<T, Z>): Z? {
+            val value = customDataTags[key] ?: return null
+            return dataType.fromPrimitive(registry.extract(dataType.primitiveType, value), handle.adapterContext)
+        }
+
+        override fun <T : Any, Z : Any> getOrDefault(
+            key: String,
+            dataType: PersistentDataType<T, Z>,
+            defaultValue: Z
+        ): Z {
+            return get(key, dataType) ?: defaultValue
+        }
+
+        override fun remove(key: String) {
+            customDataTags.remove(key)
+        }
+
+        override fun getAllKeys(): MutableSet<String> {
+            return customDataTags.keys
+        }
+
+        override fun getBase(): PersistentDataContainer {
+            return handle
+        }
+    }
+}

eco-core/core-nms/v1_19_R1/src/main/kotlin/com/willfp/eco/internal/spigot/proxy/v1_19_R1/FastItemStackFactory.kt

@@ -0,0 +1,12 @@
+package com.willfp.eco.internal.spigot.proxy.v1_19_R1
+
+import com.willfp.eco.core.fast.FastItemStack
+import com.willfp.eco.internal.spigot.proxy.FastItemStackFactoryProxy
+import com.willfp.eco.internal.spigot.proxy.common.item.EcoFastItemStack
+import org.bukkit.inventory.ItemStack
+
+class FastItemStackFactory : FastItemStackFactoryProxy {
+    override fun create(itemStack: ItemStack): FastItemStack {
+        return EcoFastItemStack(itemStack)
+    }
+}

eco-core/core-nms/v1_19_R1/src/main/kotlin/com/willfp/eco/internal/spigot/proxy/v1_19_R1/MiniMessageTranslator.kt

@@ -0,0 +1,33 @@
+package com.willfp.eco.internal.spigot.proxy.v1_19_R1
+
+import com.willfp.eco.core.display.Display
+import com.willfp.eco.internal.spigot.proxy.MiniMessageTranslatorProxy
+import com.willfp.eco.util.toLegacy
+import net.kyori.adventure.text.minimessage.MiniMessage
+
+class MiniMessageTranslator : MiniMessageTranslatorProxy {
+    override fun format(message: String): String {
+        var mut = message
+
+        val startsWithPrefix = mut.startsWith(Display.PREFIX)
+        if (startsWithPrefix) {
+            mut = mut.substring(2)
+        }
+
+        mut = mut.replace('§', '&')
+
+        val miniMessage = runCatching {
+            MiniMessage.miniMessage().deserialize(
+                mut
+            ).toLegacy()
+        }.getOrNull() ?: mut
+
+        mut = if (startsWithPrefix) {
+            Display.PREFIX + miniMessage
+        } else {
+            miniMessage
+        }
+
+        return mut
+    }
+}

eco-core/core-nms/v1_19_R1/src/main/kotlin/com/willfp/eco/internal/spigot/proxy/v1_19_R1/SNBTConverter.kt

@@ -0,0 +1,54 @@
+package com.willfp.eco.internal.spigot.proxy.v1_19_R1
+
+import com.willfp.eco.core.items.TestableItem
+import com.willfp.eco.core.recipe.parts.EmptyTestableItem
+import com.willfp.eco.internal.spigot.proxy.SNBTConverterProxy
+import net.minecraft.nbt.CompoundTag
+import net.minecraft.nbt.SnbtPrinterTagVisitor
+import net.minecraft.nbt.TagParser
+import org.bukkit.craftbukkit.v1_19_R1.inventory.CraftItemStack
+import org.bukkit.inventory.ItemStack
+
+class SNBTConverter : SNBTConverterProxy {
+    override fun fromSNBT(snbt: String): ItemStack? {
+        val nbt = runCatching { TagParser.parseTag(snbt) }.getOrNull() ?: return null
+        val nms = net.minecraft.world.item.ItemStack.of(nbt)
+        return CraftItemStack.asBukkitCopy(nms)
+    }
+
+    override fun toSNBT(itemStack: ItemStack): String {
+        val nms = CraftItemStack.asNMSCopy(itemStack)
+        return SnbtPrinterTagVisitor().visit(nms.save(CompoundTag()))
+    }
+
+    override fun makeSNBTTestable(snbt: String): TestableItem {
+        val nbt = runCatching { TagParser.parseTag(snbt) }.getOrNull() ?: return EmptyTestableItem()
+        val nms = net.minecraft.world.item.ItemStack.of(nbt)
+        if (nms == net.minecraft.world.item.ItemStack.EMPTY) {
+            return EmptyTestableItem()
+        }
+
+        nbt.remove("Count")
+
+        return SNBTTestableItem(nbt)
+    }
+
+    class SNBTTestableItem(
+        private val tag: CompoundTag
+    ) : TestableItem {
+        override fun matches(itemStack: ItemStack?): Boolean {
+            if (itemStack == null) {
+                return false
+            }
+
+            val nms = CraftItemStack.asNMSCopy(itemStack)
+            val nmsTag = nms.save(CompoundTag())
+            nmsTag.remove("Count")
+            return tag.copy().merge(nmsTag) == nmsTag
+        }
+
+        override fun getItem(): ItemStack {
+            return CraftItemStack.asBukkitCopy(net.minecraft.world.item.ItemStack.of(tag))
+        }
+    }
+}

eco-core/core-nms/v1_19_R1/src/main/kotlin/com/willfp/eco/internal/spigot/proxy/v1_19_R1/Skull.kt

@@ -0,0 +1,48 @@
+package com.willfp.eco.internal.spigot.proxy.v1_19_R1
+
+import com.mojang.authlib.GameProfile
+import com.mojang.authlib.properties.Property
+import com.willfp.eco.internal.spigot.proxy.SkullProxy
+import org.bukkit.inventory.meta.SkullMeta
+import java.lang.reflect.Field
+import java.lang.reflect.Method
+import java.util.UUID
+
+class Skull : SkullProxy {
+    private lateinit var setProfile: Method
+    private lateinit var profile: Field
+
+    override fun setSkullTexture(
+        meta: SkullMeta,
+        base64: String
+    ) {
+        if (!this::setProfile.isInitialized) {
+            setProfile = meta.javaClass.getDeclaredMethod("setProfile", GameProfile::class.java)
+            setProfile.isAccessible = true
+        }
+        if (base64.length < 20) {
+            return
+        }
+
+        val uuid = UUID(
+            base64.substring(base64.length - 20).hashCode().toLong(),
+            base64.substring(base64.length - 10).hashCode().toLong()
+        )
+        val profile = GameProfile(uuid, "eco")
+        profile.properties.put("textures", Property("textures", base64))
+        setProfile.invoke(meta, profile)
+    }
+
+    override fun getSkullTexture(
+        meta: SkullMeta
+    ): String? {
+        if (!this::profile.isInitialized) {
+            profile = meta.javaClass.getDeclaredField("profile")
+            profile.isAccessible = true
+        }
+        val profile = profile[meta] as GameProfile? ?: return null
+        val properties = profile.properties ?: return null
+        val prop = properties["textures"] ?: return null
+        return prop.toMutableList().firstOrNull()?.name
+    }
+}

eco-core/core-nms/v1_19_R1/src/main/kotlin/com/willfp/eco/internal/spigot/proxy/v1_19_R1/TPS.kt

@@ -0,0 +1,11 @@
+package com.willfp.eco.internal.spigot.proxy.v1_19_R1
+
+import com.willfp.eco.internal.spigot.proxy.TPSProxy
+import org.bukkit.Bukkit
+import org.bukkit.craftbukkit.v1_19_R1.CraftServer
+
+class TPS : TPSProxy {
+    override fun getTPS(): Double {
+        return (Bukkit.getServer() as CraftServer).handle.server.recentTps[0]
+    }
+}

eco-core/core-nms/v1_19_R1/src/main/kotlin/com/willfp/eco/internal/spigot/proxy/v1_19_R1/VillagerTrade.kt

@@ -0,0 +1,41 @@
+package com.willfp.eco.internal.spigot.proxy.v1_19_R1
+
+import com.willfp.eco.core.display.Display
+import com.willfp.eco.internal.spigot.proxy.VillagerTradeProxy
+import net.minecraft.nbt.CompoundTag
+import net.minecraft.world.item.ItemStack
+import net.minecraft.world.item.trading.MerchantOffer
+import org.bukkit.craftbukkit.v1_19_R1.inventory.CraftItemStack
+import org.bukkit.craftbukkit.v1_19_R1.inventory.CraftMerchantRecipe
+import org.bukkit.entity.Player
+import org.bukkit.inventory.MerchantRecipe
+import java.lang.reflect.Field
+
+class VillagerTrade : VillagerTradeProxy {
+    private val handle: Field = CraftMerchantRecipe::class.java.getDeclaredField("handle")
+
+    override fun displayTrade(
+        recipe: MerchantRecipe,
+        player: Player
+    ): MerchantRecipe {
+        recipe as CraftMerchantRecipe
+
+        val nbt = getHandle(recipe).createTag()
+        for (tag in arrayOf("buy", "buyB", "sell")) {
+            val nms = ItemStack.of(nbt.getCompound(tag))
+            val displayed = Display.display(CraftItemStack.asBukkitCopy(nms), player)
+            val itemNBT = CraftItemStack.asNMSCopy(displayed).save(CompoundTag())
+            nbt.put(tag, itemNBT)
+        }
+
+        return CraftMerchantRecipe(MerchantOffer(nbt))
+    }
+
+    private fun getHandle(recipe: CraftMerchantRecipe): MerchantOffer {
+        return handle[recipe] as MerchantOffer
+    }
+
+    init {
+        handle.isAccessible = true
+    }
+}

eco-core/core-plugin/src/main/kotlin/com/willfp/eco/internal/spigot/ConflictFinder.kt

@@ -47,7 +47,13 @@ private fun Plugin.getConflict(): Conflict? {
         return Conflict(this, ConflictType.LIB_LOADER)
     }
 
-    val zip = ZipFile(File(this::class.java.protectionDomain.codeSource.location.toURI()))
+    val file = File(this::class.java.protectionDomain.codeSource.location.toURI())
+
+    if (!file.exists() || file.name.contains("PolymartHelper")) {
+        return null
+    }
+
+    val zip = ZipFile(file)
 
     for (entry in zip.entries()) {
         if (entry.name.startsWith("kotlin/") || entry.name.startsWith("kotlinx/")) {

eco-core/core-plugin/src/main/kotlin/com/willfp/eco/internal/spigot/EcoHandler.kt

@@ -7,6 +7,7 @@ import com.willfp.eco.core.data.ExtendedPersistentDataContainer
 import com.willfp.eco.core.entities.ai.EntityController
 import com.willfp.eco.core.fast.FastItemStack
 import com.willfp.eco.core.integrations.placeholder.PlaceholderIntegration
+import com.willfp.eco.core.items.SNBTHandler
 import com.willfp.eco.internal.EcoCleaner
 import com.willfp.eco.internal.EcoPropsParser
 import com.willfp.eco.internal.Plugins
@@ -31,6 +32,7 @@ import com.willfp.eco.internal.spigot.data.EcoKeyRegistry
 import com.willfp.eco.internal.spigot.data.EcoProfileHandler
 import com.willfp.eco.internal.spigot.data.storage.HandlerType
 import com.willfp.eco.internal.spigot.integrations.bstats.MetricHandler
+import com.willfp.eco.internal.spigot.items.EcoSNBTHandler
 import com.willfp.eco.internal.spigot.proxy.CommonsInitializerProxy
 import com.willfp.eco.internal.spigot.proxy.DummyEntityFactoryProxy
 import com.willfp.eco.internal.spigot.proxy.EntityControllerFactoryProxy
@@ -70,6 +72,8 @@ class EcoHandler : EcoSpigotPlugin(), Handler {
         }, this
     )
 
+    private val snbtHandler = EcoSNBTHandler(this)
+
     @Suppress("RedundantNullableReturnType")
     private val keyFactory: InternalNamespacedKeyFactory? =
         if (this.configYml.getBool("use-safer-namespacedkey-creation"))
@@ -170,4 +174,7 @@ class EcoHandler : EcoSpigotPlugin(), Handler {
 
     override fun newPdc(): PersistentDataContainer =
         getProxy(ExtendedPersistentDataContainerFactoryProxy::class.java).newPdc()
+
+    override fun getSNBTHandler(): SNBTHandler =
+        snbtHandler
 }

eco-core/core-plugin/src/main/kotlin/com/willfp/eco/internal/spigot/EcoSpigotPlugin.kt

@@ -111,6 +111,7 @@ import com.willfp.eco.internal.spigot.integrations.shop.ShopEconomyShopGUI
 import com.willfp.eco.internal.spigot.integrations.shop.ShopShopGuiPlus
 import com.willfp.eco.internal.spigot.integrations.shop.ShopZShop
 import com.willfp.eco.internal.spigot.math.evaluateExpression
+import com.willfp.eco.internal.spigot.player.PlayerHealthFixer
 import com.willfp.eco.internal.spigot.proxy.FastItemStackFactoryProxy
 import com.willfp.eco.internal.spigot.proxy.SkullProxy
 import com.willfp.eco.internal.spigot.proxy.TPSProxy
@@ -358,7 +359,8 @@ abstract class EcoSpigotPlugin : EcoPlugin() {
             ArrowDataListener(this),
             ArmorChangeEventListeners(this),
             DataListener(this),
-            PlayerBlockListener(this)
+            PlayerBlockListener(this),
+            PlayerHealthFixer(this)
         )
 
         if (Prerequisite.HAS_PAPER.isMet) {

eco-core/core-plugin/src/main/kotlin/com/willfp/eco/internal/spigot/items/EcoSNBTHandler.kt

@@ -0,0 +1,20 @@
+package com.willfp.eco.internal.spigot.items
+
+import com.willfp.eco.core.EcoPlugin
+import com.willfp.eco.core.items.SNBTHandler
+import com.willfp.eco.core.items.TestableItem
+import com.willfp.eco.internal.spigot.proxy.SNBTConverterProxy
+import org.bukkit.inventory.ItemStack
+
+class EcoSNBTHandler(
+    private val plugin: EcoPlugin
+) : SNBTHandler {
+    override fun fromSNBT(snbt: String): ItemStack? =
+        plugin.getProxy(SNBTConverterProxy::class.java).fromSNBT(snbt)
+
+    override fun toSNBT(itemStack: ItemStack): String =
+        plugin.getProxy(SNBTConverterProxy::class.java).toSNBT(itemStack)
+
+    override fun createTestable(snbt: String): TestableItem =
+        plugin.getProxy(SNBTConverterProxy::class.java).makeSNBTTestable(snbt)
+}

eco-core/core-plugin/src/main/kotlin/com/willfp/eco/internal/spigot/player/PlayerHealthFixer.kt

@@ -0,0 +1,42 @@
+package com.willfp.eco.internal.spigot.player
+
+import com.willfp.eco.core.EcoPlugin
+import com.willfp.eco.core.data.keys.PersistentDataKey
+import com.willfp.eco.core.data.keys.PersistentDataKeyType
+import com.willfp.eco.core.data.profile
+import org.bukkit.event.EventHandler
+import org.bukkit.event.Listener
+import org.bukkit.event.player.PlayerJoinEvent
+import org.bukkit.event.player.PlayerQuitEvent
+
+class PlayerHealthFixer(
+    private val plugin: EcoPlugin
+): Listener {
+    private val lastHealthKey = PersistentDataKey(
+        plugin.namespacedKeyFactory.create("last_health"),
+        PersistentDataKeyType.DOUBLE,
+        0.0
+    )
+
+    @EventHandler
+    fun onLeave(event: PlayerQuitEvent) {
+        if (!plugin.configYml.getBool("health-fixer")) {
+            return
+        }
+
+        val player = event.player
+        player.profile.write(lastHealthKey, player.health)
+    }
+
+    @EventHandler
+    fun onJoin(event: PlayerJoinEvent) {
+        if (!plugin.configYml.getBool("health-fixer")) {
+            return
+        }
+
+        val player = event.player
+        plugin.scheduler.runLater(2) {
+            player.health = player.profile.read(lastHealthKey)
+        }
+    }
+}

eco-core/core-plugin/src/main/resources/config.yml

@@ -76,4 +76,7 @@ log-full-extension-errors: false
 # disable this option. Bear in mind that this means the auto-craft preview will fail to
 # render items nicely, which may degrade the user experience on your server. If you use
 # a custom crafting table, though, this won't affect anything, and you should disable the option.
-displayed-recipes: true
+displayed-recipes: true
+
+# Save health on leave and set it back on join - works around attribute modifiers.
+health-fixer: false

eco-core/core-proxy/src/main/kotlin/com/willfp/eco/internal/spigot/proxy/SNBTConverterProxy.kt

@@ -0,0 +1,10 @@
+package com.willfp.eco.internal.spigot.proxy
+
+import com.willfp.eco.core.items.TestableItem
+import org.bukkit.inventory.ItemStack
+
+interface SNBTConverterProxy {
+    fun toSNBT(itemStack: ItemStack): String
+    fun fromSNBT(snbt: String): ItemStack?
+    fun makeSNBTTestable(snbt: String): TestableItem
+}

gradle.properties

@@ -1,3 +1,3 @@
-version = 6.36.1
+version = 6.37.2
 plugin-name = eco
 kotlin.code.style = official

settings.gradle.kts

@@ -15,6 +15,7 @@ include(":eco-core:core-nms:nms-common")
 include(":eco-core:core-nms:v1_17_R1")
 include(":eco-core:core-nms:v1_18_R1")
 include(":eco-core:core-nms:v1_18_R2")
+include(":eco-core:core-nms:v1_19_R1")
 include(":eco-core:core-proxy")
 include(":eco-core:core-plugin")
 include(":eco-core:core-backend")