Added 1.20 support

eco-core/core-nms/v1_20_R1/build.gradle.kts

@@ -0,0 +1,6 @@
+group = "com.willfp"
+version = rootProject.version
+
+dependencies {
+    compileOnly("org.spigotmc:spigot:1.20-R0.1-SNAPSHOT")
+}

eco-core/core-nms/v1_20_R1/src/main/kotlin/com/willfp/ecoenchants/proxy/v1_20_R1/EcoCraftEnchantment.kt

@@ -0,0 +1,26 @@
+package com.willfp.ecoenchants.proxy.v1_20_R1
+
+import com.willfp.ecoenchants.enchants.EcoEnchant
+import com.willfp.ecoenchants.enchants.EcoEnchants
+import com.willfp.ecoenchants.vanilla.VanillaEnchantmentData
+import net.minecraft.world.item.enchantment.Enchantment
+import org.bukkit.craftbukkit.v1_20_R1.enchantments.CraftEnchantment
+
+class EcoCraftEnchantment(
+    target: Enchantment,
+    private val data: VanillaEnchantmentData
+) : CraftEnchantment(target) {
+    override fun getMaxLevel(): Int = data.maxLevel ?: super.getMaxLevel()
+
+    override fun conflictsWith(other: org.bukkit.enchantments.Enchantment): Boolean {
+        if (other is EcoEnchant) {
+            return other.conflictsWith(this)
+        }
+
+        return data.conflicts?.contains(other.key) ?: super.conflictsWith(other)
+    }
+
+    fun register() {
+        EcoEnchants.register(this)
+    }
+}

eco-core/core-nms/v1_20_R1/src/main/kotlin/com/willfp/ecoenchants/proxy/v1_20_R1/EcoCraftEnchantmentManager.kt

@@ -0,0 +1,26 @@
+package com.willfp.ecoenchants.proxy.v1_20_R1
+
+import com.willfp.ecoenchants.proxy.proxies.EcoCraftEnchantmentManagerProxy
+import com.willfp.ecoenchants.vanilla.VanillaEnchantmentData
+import net.minecraft.core.Registry
+import net.minecraft.core.registries.BuiltInRegistries
+import net.minecraft.core.registries.Registries
+import org.bukkit.NamespacedKey
+import org.bukkit.enchantments.Enchantment
+
+class EcoCraftEnchantmentManager : EcoCraftEnchantmentManagerProxy {
+    override fun registerNewCraftEnchantment(
+        enchantment: Enchantment,
+        data: VanillaEnchantmentData
+    ) {
+        for (enchant in BuiltInRegistries.g) {
+            val key = org.bukkit.craftbukkit.v1_20_R1.util.CraftNamespacedKey.fromMinecraft(
+                BuiltInRegistries.g.b(enchant)
+            )
+            if (key.key != enchantment.key.key) {
+                continue
+            }
+            EcoCraftEnchantment(enchant, data).register()
+        }
+    }
+}

eco-core/core-nms/v1_20_R1/src/main/kotlin/com/willfp/ecoenchants/proxy/v1_20_R1/OpenInventory.kt

@@ -0,0 +1,11 @@
+package com.willfp.ecoenchants.proxy.v1_20_R1
+
+import com.willfp.ecoenchants.proxy.proxies.OpenInventoryProxy
+import org.bukkit.craftbukkit.v1_20_R1.entity.CraftPlayer
+import org.bukkit.entity.Player
+
+class OpenInventory : OpenInventoryProxy {
+    override fun getOpenInventory(player: Player): Any {
+        return (player as CraftPlayer).handle.bR
+    }
+}

settings.gradle.kts

@@ -19,3 +19,4 @@ include(":eco-core:core-nms:v1_18_R2")
 include(":eco-core:core-nms:v1_19_R1")
 include(":eco-core:core-nms:v1_19_R2")
 include(":eco-core:core-nms:v1_19_R3")
+include(":eco-core:core-nms:v1_20_R1")