antiCheat allows Elytra to deploy when lagging

src/main/java/carpet/mixins/ServerPlayNetworkHandler_antiCheatDisabledMixin.java

@@ -1,8 +1,11 @@
 package carpet.mixins;
 
 import carpet.settings.CarpetSettings;
+import net.minecraft.network.ClientConnection;
 import net.minecraft.server.network.ServerPlayNetworkHandler;
 import net.minecraft.server.network.ServerPlayerEntity;
+import net.minecraft.util.math.Vec3d;
+import org.spongepowered.asm.mixin.Final;
 import org.spongepowered.asm.mixin.Mixin;
 import org.spongepowered.asm.mixin.Shadow;
 import org.spongepowered.asm.mixin.injection.At;
@@ -19,6 +22,10 @@ public abstract class ServerPlayNetworkHandler_antiCheatDisabledMixin
 
     @Shadow protected abstract boolean isServerOwner();
 
+    @Shadow @Final public ClientConnection client;
+
+    @Shadow public ServerPlayerEntity player;
+
     @Inject(method = "tick", at = @At("HEAD"))
     private void restrictFloatingBits(CallbackInfo ci)
     {
@@ -47,6 +54,28 @@ public abstract class ServerPlayNetworkHandler_antiCheatDisabledMixin
         return CarpetSettings.antiCheatDisabled || serverPlayerEntity.isInTeleportationState();
     }
 
+    @Redirect(method = "onClientCommand", at = @At(
+            value = "INVOKE",
+            target = "Lnet/minecraft/server/network/ServerPlayerEntity;getVelocity()Lnet/minecraft/util/math/Vec3d;"
+    ))
+    private Vec3d getFallingVelocity(ServerPlayerEntity serverPlayerEntity)
+    {
+        if (CarpetSettings.antiCheatDisabled)
+            return new Vec3d(0,-1,0);
+        return serverPlayerEntity.getVelocity();
+    }
+
+    @Redirect(method = "onClientCommand", at = @At(
+            value = "FIELD",
+            target = "Lnet/minecraft/server/network/ServerPlayerEntity;onGround:Z"
+    ))
+    private boolean getNotOnGround(ServerPlayerEntity serverPlayerEntity)
+    {
+        if (CarpetSettings.antiCheatDisabled)
+            return false;
+        return serverPlayerEntity.onGround;
+    }
+
 
 
 }