prevent quick stack when player cannot interact with the chest for any reason

src/main/java/me/youhavetrouble/quickerstacker/QuickerStacker.java

@@ -1,11 +1,23 @@
 package me.youhavetrouble.quickerstacker;
 
 
+import com.hypixel.hytale.component.Ref;
+import com.hypixel.hytale.math.vector.Vector3i;
+import com.hypixel.hytale.protocol.InteractionType;
+import com.hypixel.hytale.server.core.asset.type.blocktype.config.BlockType;
+import com.hypixel.hytale.server.core.entity.InteractionContext;
+import com.hypixel.hytale.server.core.entity.InteractionManager;
+import com.hypixel.hytale.server.core.entity.entities.Player;
+import com.hypixel.hytale.server.core.event.events.ecs.UseBlockEvent;
+import com.hypixel.hytale.server.core.modules.interaction.InteractionSimulationHandler;
 import com.hypixel.hytale.server.core.modules.interaction.interaction.config.Interaction;
 import com.hypixel.hytale.server.core.plugin.JavaPlugin;
 import com.hypixel.hytale.server.core.plugin.JavaPluginInit;
+import com.hypixel.hytale.server.core.universe.PlayerRef;
+import com.hypixel.hytale.server.core.universe.world.World;
 import me.youhavetrouble.quickerstacker.interaction.QuickStackToChestInteraction;
 import org.checkerframework.checker.nullness.compatqual.NonNullDecl;
+import com.hypixel.hytale.server.core.universe.world.storage.EntityStore;
 
 public class QuickerStacker extends JavaPlugin {
 
@@ -18,4 +30,25 @@ public class QuickerStacker extends JavaPlugin {
         this.getCodecRegistry(Interaction.CODEC).register("Yht_QuickerStacker_QuickStackToChest", QuickStackToChestInteraction.class, QuickStackToChestInteraction.CODEC);
     }
 
+    /**
+     * Check if the player can interact with the block at the given position
+     * @param ref Player ref
+     * @param world World
+     * @param x x
+     * @param y y
+     * @param z z
+     * @return true if the player can interact with the block, false otherwise
+     */
+    public static boolean canInteractWithBlock(Ref<EntityStore> ref, World world, int x, int y, int z){
+        Player player = ref.getStore().getComponent(ref, Player.getComponentType());
+        if (player == null) return false;
+        PlayerRef playerRef = ref.getStore().getComponent(ref, PlayerRef.getComponentType());
+        InteractionManager interactionManager = new InteractionManager(player, playerRef, new InteractionSimulationHandler());
+        BlockType blockType = world.getBlockType(x, y, z);
+        if (blockType == null) return false;
+        var event = new UseBlockEvent.Pre(InteractionType.Use, InteractionContext.forProxyEntity(interactionManager, player, ref), new Vector3i(x, y, z), blockType);
+        ref.getStore().invoke(ref, event);
+        return !event.isCancelled();
+    }
+
 }

src/main/java/me/youhavetrouble/quickerstacker/interaction/QuickStackToChestInteraction.java

@@ -16,11 +16,13 @@ import com.hypixel.hytale.server.core.inventory.transaction.ListTransaction;
 import com.hypixel.hytale.server.core.inventory.transaction.MoveTransaction;
 import com.hypixel.hytale.server.core.modules.interaction.interaction.CooldownHandler;
 import com.hypixel.hytale.server.core.modules.interaction.interaction.config.client.SimpleBlockInteraction;
+import com.hypixel.hytale.server.core.universe.PlayerRef;
 import com.hypixel.hytale.server.core.universe.world.World;
 import com.hypixel.hytale.server.core.universe.world.chunk.WorldChunk;
 import com.hypixel.hytale.server.core.universe.world.meta.state.ItemContainerState;
 import com.hypixel.hytale.server.core.universe.world.storage.EntityStore;
 import com.hypixel.hytale.server.core.util.NotificationUtil;
+import me.youhavetrouble.quickerstacker.QuickerStacker;
 import org.checkerframework.checker.nullness.compatqual.NonNullDecl;
 import org.checkerframework.checker.nullness.compatqual.NullableDecl;
 
@@ -37,6 +39,7 @@ public class QuickStackToChestInteraction extends SimpleBlockInteraction {
         if (player == null) return;
         BlockPosition targetBlockPosition = interactionContext.getTargetBlock();
         if (targetBlockPosition == null) return;
+        if (!QuickerStacker.canInteractWithBlock(ref, world, targetBlockPosition.x, targetBlockPosition.y, targetBlockPosition.z)) return;
         WorldChunk chunk = world.getChunk(ChunkUtil.indexChunkFromBlock(targetBlockPosition.x, targetBlockPosition.z));
         if (chunk == null) return;
         var blockState = chunk.getState(targetBlockPosition.x, targetBlockPosition.y, targetBlockPosition.z);
@@ -45,7 +48,9 @@ public class QuickStackToChestInteraction extends SimpleBlockInteraction {
         if (playerInventory == null) return;
         ListTransaction<MoveTransaction<ItemStackTransaction>> transaction = playerInventory.getCombinedHotbarFirst().quickStackTo(containerState.getItemContainer());
         if (transaction.size() <= 0) return;
-        NotificationUtil.sendNotification(player.getPlayerRef().getPacketHandler(), "Quick stacked "+ transaction.size() +" stacks");
+        PlayerRef playerRef = ref.getStore().getComponent(ref, PlayerRef.getComponentType());
+        if (playerRef == null) return;
+        NotificationUtil.sendNotification(playerRef.getPacketHandler(), "Quick stacked "+ transaction.size() +" stacks");
     }
 
     @Override