feat: add 1.21 nms support

v1_21_R1/build.gradle.kts

@@ -0,0 +1,30 @@
+plugins {
+    id("java")
+    id("io.papermc.paperweight.userdev") version "1.7.1"
+}
+
+dependencies {
+    paperweight.paperDevBundle("1.21-R0.1-SNAPSHOT")
+    implementation(project(":common"))
+}
+
+tasks {
+
+    build {
+        dependsOn(reobfJar)
+    }
+
+    compileJava {
+        options.encoding = Charsets.UTF_8.name()
+    }
+    java {
+        toolchain.languageVersion.set(JavaLanguageVersion.of(21));
+    }
+
+    javadoc {
+        options.encoding = Charsets.UTF_8.name()
+    }
+    processResources {
+        filteringCharset = Charsets.UTF_8.name()
+    }
+}

v1_21_R1/src/main/java/me/lojosho/hibiscuscommons/nms/v1_21_R1/NMSHandler.java

@@ -0,0 +1,153 @@
+package me.lojosho.hibiscuscommons.nms.v1_21_R1;
+
+import com.mojang.datafixers.util.Pair;
+import net.minecraft.network.protocol.Packet;
+import net.minecraft.network.protocol.game.ClientboundContainerSetSlotPacket;
+import net.minecraft.network.protocol.game.ClientboundSetEquipmentPacket;
+import net.minecraft.network.protocol.game.ClientboundSetPlayerTeamPacket;
+import net.minecraft.server.level.ServerLevel;
+import net.minecraft.server.level.ServerPlayer;
+import net.minecraft.server.network.ServerPlayerConnection;
+import net.minecraft.world.entity.EquipmentSlot;
+import net.minecraft.world.entity.player.Inventory;
+import net.minecraft.world.scores.PlayerTeam;
+import net.minecraft.world.scores.Team;
+import org.bukkit.Bukkit;
+import org.bukkit.craftbukkit.CraftEquipmentSlot;
+import org.bukkit.craftbukkit.CraftServer;
+import org.bukkit.craftbukkit.entity.CraftPlayer;
+import org.bukkit.craftbukkit.inventory.CraftItemStack;
+import org.bukkit.craftbukkit.scoreboard.CraftScoreboard;
+import org.bukkit.entity.Player;
+import org.bukkit.inventory.ItemStack;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.List;
+
+public class NMSHandler implements me.lojosho.hibiscuscommons.nms.NMSHandler {
+
+
+    @Override
+    public int getNextEntityId() {
+        return net.minecraft.world.entity.Entity.nextEntityId();
+    }
+
+    @Override
+    public org.bukkit.entity.Entity getEntity(int entityId) {
+        net.minecraft.world.entity.Entity entity = getNMSEntity(entityId);
+        if (entity == null) return null;
+        return entity.getBukkitEntity();
+    }
+
+    private net.minecraft.world.entity.Entity getNMSEntity(int entityId) {
+        for (ServerLevel world : ((CraftServer) Bukkit.getServer()).getHandle().getServer().getAllLevels()) {
+            net.minecraft.world.entity.Entity entity = world.getEntity(entityId);
+            if (entity == null) continue;
+            return entity;
+        }
+        return null;
+    }
+
+    @Override
+    public void equipmentSlotUpdate(
+            int entityId,
+            org.bukkit.inventory.EquipmentSlot slot,
+            ItemStack item,
+            List<Player> sendTo
+    ) {
+
+        EquipmentSlot nmsSlot = null;
+        net.minecraft.world.item.ItemStack nmsItem = null;
+
+        // Converting EquipmentSlot and ItemStack to NMS ones.
+        nmsSlot = CraftEquipmentSlot.getNMS(slot);
+        nmsItem = CraftItemStack.asNMSCopy(item);
+
+        if (nmsSlot == null) return;
+
+        Pair<EquipmentSlot, net.minecraft.world.item.ItemStack> pair = new Pair<>(nmsSlot, nmsItem);
+
+        List<Pair<EquipmentSlot, net.minecraft.world.item.ItemStack>> pairs = Collections.singletonList(pair);
+
+        ClientboundSetEquipmentPacket packet = new ClientboundSetEquipmentPacket(entityId, pairs);
+        for (Player p : sendTo) sendPacket(p, packet);
+    }
+
+    @Override
+    public void equipmentSlotUpdate(
+            int entityId,
+            HashMap<org.bukkit.inventory.EquipmentSlot, ItemStack> equipment,
+            List<Player> sendTo
+    ) {
+
+        List<Pair<EquipmentSlot, net.minecraft.world.item.ItemStack>> pairs = new ArrayList<>();
+
+        for (org.bukkit.inventory.EquipmentSlot slot : equipment.keySet()) {
+            EquipmentSlot nmsSlot = CraftEquipmentSlot.getNMS(slot);
+            net.minecraft.world.item.ItemStack nmsItem = CraftItemStack.asNMSCopy(equipment.get(slot));
+
+            Pair<EquipmentSlot, net.minecraft.world.item.ItemStack> pair = new Pair<>(nmsSlot, nmsItem);
+            pairs.add(pair);
+        }
+
+        ClientboundSetEquipmentPacket packet = new ClientboundSetEquipmentPacket(entityId, pairs);
+        for (Player p : sendTo) sendPacket(p, packet);
+    }
+
+
+    @Override
+    public void slotUpdate(
+            Player player,
+            int slot
+    ) {
+        int index = 0;
+
+        ServerPlayer player1 = ((CraftPlayer) player).getHandle();
+
+        if (index < Inventory.getSelectionSize()) {
+            index += 36;
+        } else if (index > 39) {
+            index += 5; // Off hand
+        } else if (index > 35) {
+            index = 8 - (index - 36);
+        }
+        ItemStack item = player.getInventory().getItem(slot);
+
+        Packet packet = new ClientboundContainerSetSlotPacket(player1.inventoryMenu.containerId, player1.inventoryMenu.incrementStateId(), index, CraftItemStack.asNMSCopy(item));
+        sendPacket(player, packet);
+    }
+
+    @Override
+    public void hideNPCName(Player player, String NPCName) {
+        //Creating the team
+        PlayerTeam team = new PlayerTeam(((CraftScoreboard) Bukkit.getScoreboardManager().getMainScoreboard()).getHandle(), NPCName);
+
+        //Setting name visibility
+        team.setNameTagVisibility(Team.Visibility.NEVER);
+
+        //Remove the Team (i assume so if it exists)
+        ClientboundSetPlayerTeamPacket removeTeamPacket = ClientboundSetPlayerTeamPacket.createRemovePacket(team);
+        sendPacket(player, removeTeamPacket);
+        //Creating the Team
+        ClientboundSetPlayerTeamPacket createTeamPacket = ClientboundSetPlayerTeamPacket.createAddOrModifyPacket(team, true);
+        sendPacket(player, createTeamPacket);
+        //Adding players to the team (You have to use the NPC's name, and add it to a list)
+        ClientboundSetPlayerTeamPacket createPlayerTeamPacket = ClientboundSetPlayerTeamPacket.createMultiplePlayerPacket(team, new ArrayList<String>() {{
+            add(NPCName);
+        }}, ClientboundSetPlayerTeamPacket.Action.ADD);
+        sendPacket(player, createPlayerTeamPacket);
+    }
+
+    public void sendPacket(Player player, Packet packet) {
+        ServerPlayer serverPlayer = ((CraftPlayer) player).getHandle();
+        ServerPlayerConnection connection = serverPlayer.connection;
+        connection.send(packet);
+    }
+
+    @Override
+    public boolean getSupported() {
+        return true;
+    }
+}