Update for 1.17-rc1 and use Java 16

bootstrap/fabric/src/main/java/org/geysermc/platform/fabric/world/GeyserFabricWorldManager.java

@@ -35,7 +35,7 @@ import net.minecraft.entity.player.PlayerEntity;
 import net.minecraft.item.ItemStack;
 import net.minecraft.item.WritableBookItem;
 import net.minecraft.item.WrittenBookItem;
-import net.minecraft.nbt.ListTag;
+import net.minecraft.nbt.NbtList;
 import net.minecraft.server.MinecraftServer;
 import net.minecraft.util.math.BlockPos;
 import org.geysermc.connector.network.session.GeyserSession;
@@ -89,7 +89,7 @@ public class GeyserFabricWorldManager extends GeyserWorldManager {
                         .putString("Name", "minecraft:writable_book");
                 List<NbtMap> pages = new ArrayList<>(hasBookPages ? pageCount : 1);
                 if (hasBookPages && WritableBookItem.isValid(book.getTag())) {
-                    ListTag listTag = book.getTag().getList("pages", 8);
+                    NbtList listTag = book.getTag().getList("pages", 8);
 
                     for (int i = 0; i < listTag.size(); i++) {
                         String page = listTag.getString(i);

bootstrap/fabric/src/main/resources/fabric.mod.json

@@ -23,8 +23,8 @@
     "geyser-fabric.mixins.json"
   ],
   "depends": {
-    "fabricloader": ">=0.10.1+build.209",
+    "fabricloader": ">=0.11.3",
     "fabric": "*",
-    "minecraft": ">=1.16.3"
+    "minecraft": "1.17.x"
   }
 }

bootstrap/fabric/src/main/resources/geyser-fabric.mixins.json

@@ -1,7 +1,7 @@
 {
   "required": true,
   "package": "org.geysermc.platform.fabric.mixin",
-  "compatibilityLevel": "JAVA_8",
+  "compatibilityLevel": "JAVA_16",
   "client": [
     "client.IntegratedServerMixin"
   ],