Attempt #3 to fix getBlockStateAt() in Folia

bukkit/src/main/java/me/caseload/knockbacksync/player/BukkitPlayer.java

@@ -5,6 +5,9 @@ import com.github.retrooper.packetevents.manager.server.ServerVersion;
 import com.github.retrooper.packetevents.protocol.player.User;
 import com.github.retrooper.packetevents.protocol.world.BoundingBox;
 import com.github.retrooper.packetevents.util.Vector3d;
+import me.caseload.knockbacksync.BukkitBase;
+import me.caseload.knockbacksync.Platform;
+import me.caseload.knockbacksync.world.FoliaWorld;
 import me.caseload.knockbacksync.world.PlatformWorld;
 import me.caseload.knockbacksync.world.SpigotWorld;
 import org.bukkit.Bukkit;
@@ -33,7 +36,7 @@ public class BukkitPlayer implements PlatformPlayer {
     // 1.12.2 support
     static {
         try {
-            // Check the current server versio
+            // Check the current server version
 
             // If the version is greater than 1.14.4, use the Player method directly
             if (currentVersion.isOlderThan(ServerVersion.V_1_15)) {
@@ -135,7 +138,7 @@ public class BukkitPlayer implements PlatformPlayer {
 
     @Override
     public PlatformWorld getWorld() {
-        return new SpigotWorld(bukkitPlayer.getWorld());
+        return BukkitBase.INSTANCE.getPlatform() == Platform.FOLIA ? new FoliaWorld(bukkitPlayer.getWorld()): new SpigotWorld(bukkitPlayer.getWorld());
     }
 
     @Override

bukkit/src/main/java/me/caseload/knockbacksync/world/FoliaWorld.java

@@ -0,0 +1,18 @@
+package me.caseload.knockbacksync.world;
+
+import com.github.retrooper.packetevents.protocol.world.states.WrappedBlockState;
+import io.github.retrooper.packetevents.util.SpigotConversionUtil;
+import org.bukkit.World;
+import org.bukkit.block.BlockState;
+
+public class FoliaWorld extends SpigotWorld {
+    public FoliaWorld(World world) {
+        super(world);
+    }
+
+    @Override
+    public WrappedBlockState getBlockStateAt(int x, int y, int z) {
+        BlockState block = this.world.getBlockState(x, y, z);
+        return SpigotConversionUtil.fromBukkitBlockData(block.getBlockData());
+    }
+}

bukkit/src/main/java/me/caseload/knockbacksync/world/SpigotWorld.java

@@ -18,7 +18,7 @@ import org.bukkit.util.Vector;
 import java.lang.reflect.Method;
 
 public class SpigotWorld implements PlatformWorld {
-    private final World world;
+    protected final World world;
 
     // Reflection variables
     private static Class<?> craftWorldClass;