added TNTDoNotUpdate mixins

src/main/java/carpet/mixins/TntBlockMixin.java

@@ -0,0 +1,21 @@
+package carpet.mixins;
+
+import carpet.CarpetSettings;
+import net.minecraft.block.TntBlock;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.world.World;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Redirect;
+
+@Mixin(TntBlock.class)
+public abstract class TntBlockMixin
+{
+    // Add carpet rule check for TNTDoNotUpdate to an if statement.
+    @Redirect(method = "onBlockAdded", at = @At(value = "INVOKE",
+            target = "Lnet/minecraft/world/World;isReceivingRedstonePower(Lnet/minecraft/util/math/BlockPos;)Z"))
+    private boolean isTNTDoNotUpdate(World world, BlockPos blockPos)
+    {
+        return !CarpetSettings.getBool("TNTDoNotUpdate") && world.isReceivingRedstonePower(blockPos);
+    }
+}