BadPacketsS

src/main/java/ac/grim/grimac/checks/impl/badpackets/BadPacketsS.java

@@ -0,0 +1,14 @@
+package ac.grim.grimac.checks.impl.badpackets;
+
+import ac.grim.grimac.checks.Check;
+import ac.grim.grimac.checks.CheckData;
+import ac.grim.grimac.checks.type.PacketCheck;
+import ac.grim.grimac.player.GrimPlayer;
+
+@CheckData(name = "BadPacketsS")
+public class BadPacketsS extends Check implements PacketCheck {
+    public BadPacketsS(GrimPlayer player) {
+        super(player);
+    }
+
+}

src/main/java/ac/grim/grimac/events/packets/PacketPingListener.java

@@ -1,8 +1,7 @@
 package ac.grim.grimac.events.packets;
 
 import ac.grim.grimac.GrimAPI;
-import ac.grim.grimac.checks.Check;
-import ac.grim.grimac.checks.impl.misc.TransactionOrder;
+import ac.grim.grimac.checks.impl.badpackets.BadPacketsS;
 import ac.grim.grimac.player.GrimPlayer;
 import ac.grim.grimac.utils.data.Pair;
 import com.github.retrooper.packetevents.event.PacketListenerAbstract;
@@ -35,6 +34,12 @@ public void onPacketReceive(PacketReceiveEvent event) {
 
             // Vanilla always uses an ID starting from 1
             if (id <= 0) {
+                // check if accepted
+                if (!transaction.isAccepted()) {
+                    player.checkManager.getPacketCheck(BadPacketsS.class).flag();
+                    event.setCancelled(true);
+                    return;
+                }
                 // Check if we sent this packet before cancelling it
                 if (player.addTransactionResponse(id)) {
                     player.packetStateData.lastTransactionPacketWasValid = true;

src/main/java/ac/grim/grimac/manager/CheckManager.java

@@ -82,6 +82,7 @@ public CheckManager(GrimPlayer player) {
                 .put(BadPacketsP.class, new BadPacketsP(player))
                 .put(BadPacketsQ.class, new BadPacketsQ(player))
                 .put(BadPacketsR.class, new BadPacketsR(player))
+                .put(BadPacketsS.class, new BadPacketsS(player))
                 .put(FastBreak.class, new FastBreak(player))
                 .put(TransactionOrder.class, new TransactionOrder(player))
                 .put(NoSlowB.class, new NoSlowB(player))