added liquidDamageDisabled inspired by TIS additions and ported by permission by Fallen Breath

src/main/java/carpet/CarpetSettings.java

@@ -513,6 +513,9 @@ public class CarpetSettings
     @Rule(desc = "placing blocks cause block updates", category = CREATIVE)
     public static boolean interactionUpdates = true;
 
+    @Rule(desc = "Disables breaking of blocks caused by flowing liquids", category = CREATIVE)
+    public static boolean liquidDamageDisabled = false;
+
     @Rule(
             desc = "smooth client animations with low tps settings",
             extra = "works only in SP, and will slow down players",

src/main/java/carpet/mixins/FlowableFluid_liquidDamageDisabledMixin.java

@@ -0,0 +1,34 @@
+package carpet.mixins;
+
+import carpet.CarpetSettings;
+import net.minecraft.block.BlockState;
+import net.minecraft.block.Material;
+import net.minecraft.fluid.FlowableFluid;
+import net.minecraft.fluid.Fluid;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.world.BlockView;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfoReturnable;
+
+@Mixin(FlowableFluid.class)
+public class FlowableFluid_liquidDamageDisabledMixin
+{
+    @Inject(
+            method = "canFill",
+            at = @At(
+                    value = "INVOKE",
+                    target = "Lnet/minecraft/block/Material;blocksMovement()Z"
+            ),
+            cancellable = true
+    )
+    private void stopBreakingBlock(BlockView world, BlockPos pos, BlockState state, Fluid fluid, CallbackInfoReturnable<Boolean> cir)
+    {
+        if (CarpetSettings.liquidDamageDisabled)
+        {
+            Material material = state.getMaterial();
+            cir.setReturnValue(material == Material.AIR || material.isLiquid());
+        }
+    }
+}

src/main/resources/carpet.mixins.json

@@ -25,6 +25,8 @@
     "Structure_fillUpdatesMixin",
     "ServerPlayNetworkHandler_interactionUpdatesMixin",
 
+    "FlowableFluid_liquidDamageDisabledMixin",
+
     "ServerMetadata_motdMixin",
     "MinecraftServer_pingPlayerSampleLimit",