lifecycle v1 isnt available for 1.14

src/main/java/com/github/creeper123123321/viafabric/providers/VRHandItemProvider.java

@@ -0,0 +1,121 @@
+/*
+ * MIT License
+ *
+ * Copyright (c) 2018- creeper123123321 <https://creeper123123321.keybase.pub/>
+ * Copyright (c) 2019- contributors <https://github.com/ViaVersion/ViaFabric/graphs/contributors>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+package com.github.creeper123123321.viafabric.providers;
+
+import com.github.creeper123123321.viafabric.ViaFabric;
+import net.fabricmc.api.EnvType;
+import net.fabricmc.api.Environment;
+import net.fabricmc.fabric.api.event.world.WorldTickCallback;
+import net.minecraft.client.MinecraftClient;
+import net.minecraft.client.network.ClientPlayerEntity;
+import net.minecraft.item.ItemStack;
+import net.minecraft.world.World;
+import us.myles.ViaVersion.api.data.UserConnection;
+import us.myles.ViaVersion.api.minecraft.item.Item;
+import us.myles.ViaVersion.protocols.protocol1_9to1_8.providers.HandItemProvider;
+
+import java.util.Map;
+import java.util.UUID;
+import java.util.concurrent.ConcurrentHashMap;
+
+public class VRHandItemProvider extends HandItemProvider {
+    public Item clientItem = null;
+    public Map<UUID, Item> serverPlayers = new ConcurrentHashMap<>();
+
+    @Override
+    public Item getHandItem(UserConnection info) {
+        Item serverItem;
+        if (info.isClientSide()) {
+            return getClientItem();
+        } else if ((serverItem = serverPlayers.get(info.getProtocolInfo().getUuid())) != null) {
+            return new Item(serverItem);
+        }
+        return super.getHandItem(info);
+    }
+
+    private Item getClientItem() {
+        if (clientItem == null) {
+            return new Item(0, (byte) 0, (short) 0, null);
+        }
+        return new Item(clientItem);
+    }
+
+    @Environment(EnvType.CLIENT)
+    public void registerClientTick() {
+        try {
+            WorldTickCallback.EVENT.register(world -> {
+                if (world.isClient) {
+                    tickClient();
+                }
+            });
+        } catch (NoClassDefFoundError ignored2) {
+            ViaFabric.JLOGGER.info("Fabric Lifecycle V0/V1 isn't installed");
+        }
+    }
+
+    public void registerServerTick() {
+        WorldTickCallback.EVENT.register(world -> {
+            if (!world.isClient) {
+                tickServer(world);
+            }
+        });
+    }
+
+    private void tickClient() {
+        ClientPlayerEntity p = MinecraftClient.getInstance().player;
+        if (p != null) {
+            clientItem = fromNative(p.inventory.getMainHandStack());
+        }
+    }
+
+    private void tickServer(World world) {
+        serverPlayers.clear();
+        world.playerEntities.forEach(it -> serverPlayers
+                .put(it.getUuid(), fromNative(it.inventory.getMainHandStack())));
+    }
+
+    private Item fromNative(ItemStack original) {
+        int id = swordId(net.minecraft.item.Item.REGISTRY.getIdentifier(original.getItem()).toString());
+        return new Item(id, (byte) original.count, (short) original.getDamage(), null);
+    }
+
+    private int swordId(String id) {
+        // https://github.com/ViaVersion/ViaVersion/blob/8de26a0ad33f5b739f5394ed80f69d14197fddc7/common/src/main/java/us/myles/ViaVersion/protocols/protocol1_9to1_8/Protocol1_9To1_8.java#L86
+        switch (id) {
+            case "minecraft:iron_sword":
+                return 267;
+            case "minecraft:wooden_sword":
+                return 268;
+            case "minecraft:golden_sword":
+                return 272;
+            case "minecraft:diamond_sword":
+                return 276;
+            case "minecraft:stone_sword":
+                return 283;
+        }
+        return 0;
+    }
+}