Valves redstone connection adaptions, valves remove pressurized flag when not inserting to fluid pipes, fluid accumulator refilling changed.

1.12/gradle.properties

@@ -4,4 +4,4 @@ org.gradle.jvmargs=-Xmx8G
 version_minecraft=1.12.2
 version_forge=14.23.5.2768
 version_jei=4.10.0.198
-version_engineersdecor=1.0.4-b8
+version_engineersdecor=1.0.4-b9

1.12/meta/update.json

@@ -1,6 +1,7 @@
 {
   "homepage": "https://www.curseforge.com/minecraft/mc-mods/engineers-decor/",
   "1.12.2": {
+    "1.0.4-b9": "[F] Inserting fluids with pressurized tag only into IE piping.\n[F] Valve redstone connector rendering does not check for \"can connect redstone\" but only for \"can provide power\".\n[M] Valves are adpted to be detected as pipe by IE.",
     "1.0.4-b8": "[F] Fixed stairs rendering without smooth light (thanks rastot9).\n[E] Added passive fluid accumulator (experimental feature, see config).",
     "1.0.4-b7": "[F] Fixed recipe loading issue if IE is not installed.\n[M] Valves support IE pressurized fluid transfer.",
     "1.0.4-b6": "[A] Added redstone controlled fluid valve.\n[A] Added redstone controlled analog fluid valve.\n[M] Check valve recipe adapted (thanks majijn).",
@@ -32,6 +33,6 @@
   },
   "promos": {
     "1.12.2-recommended": "1.0.3",
-    "1.12.2-latest": "1.0.4-b8"
+    "1.12.2-latest": "1.0.4-b9"
   }
 }

1.12/readme.md

@@ -10,6 +10,11 @@ Mod sources for Minecraft version 1.12.2.
 ----
 ## Revision history
 
+    - v1.0.4-b9 [F] Inserting fluids with pressurized tag only into IE piping.
+                [F] Valve redstone connector rendering does not check for
+                    "can connect redstone" but only for "can provide power".
+                [M] Valves are adpted to be detected as pipe by IE.
+
     - v1.0.4-b8 [F] Fixed stairs rendering without smooth light (thanks rastot9).
                 [E] Added passive fluid accumulator (experimental feature, see config).
 

1.12/src/main/java/blusunrize/immersiveengineering/api/fluid/IFluidPipe.java

@@ -0,0 +1,18 @@
+/*
+ * BluSunrize
+ * Copyright (c) 2017
+ *
+ * This code is licensed under "Blu's License of Common Sense"
+ * Details can be found in the license file in the root folder of this project
+ */
+
+package blusunrize.immersiveengineering.api.fluid;
+
+import net.minecraft.util.EnumFacing;
+
+public interface IFluidPipe
+{
+  boolean canOutputPressurized(boolean consumePower);
+
+  boolean hasOutputConnection(EnumFacing side);
+}

1.12/src/main/java/wile/engineersdecor/blocks/BlockDecorPassiveFluidAccumulator.java

@@ -4,11 +4,19 @@
  * @copyright (C) 2019 Stefan Wilhelm
  * @license MIT (see https://opensource.org/licenses/MIT)
  *
- * Basically a piece of pipe that does not connect to
+ * A device that collects fluids from adjacent tank outputs
- * pipes on the side, and conducts fluids only in one way.
+ * when a pump drains on the (only) output side. Shall support
+ * high flow rates, and a vavuum suction delay. Shall not drain
+ * high amounts of fluid from the adjacent tanks when no fluid
+ * is requested at the output port. Shall drain balanced from
+ * the adjacent input sides.
  */
 package wile.engineersdecor.blocks;
 
+import net.minecraft.entity.player.EntityPlayer;
+import net.minecraft.util.EnumHand;
+import net.minecraftforge.fml.common.gameevent.PlayerEvent;
+import wile.engineersdecor.ModEngineersDecor;
 import wile.engineersdecor.detail.ModAuxiliaries;
 import net.minecraft.block.Block;
 import net.minecraft.block.SoundType;
@@ -46,6 +54,15 @@ public class BlockDecorPassiveFluidAccumulator extends BlockDecorDirected implem
   public TileEntity createTileEntity(World world, IBlockState state)
   { return new BlockDecorPassiveFluidAccumulator.BTileEntity(); }
 
+  public boolean onBlockActivated(World world, BlockPos pos, IBlockState state, EntityPlayer player, EnumHand hand, EnumFacing facing, float hitX, float hitY, float hitZ)
+  {
+    if(world.isRemote) return true;
+    TileEntity te = world.getTileEntity(pos);
+    if(!(te instanceof BTileEntity)) return true;
+    ((BTileEntity)te).debug_info_dump(player);
+    return true;
+  }
+
   public void neighborChanged(IBlockState state, World world, BlockPos pos, Block block, BlockPos fromPos)
   { TileEntity te = world.getTileEntity(pos); if(te instanceof BlockDecorPipeValve.BTileEntity) ((BTileEntity)te).block_changed(); }
 
@@ -57,18 +74,26 @@ public class BlockDecorPassiveFluidAccumulator extends BlockDecorDirected implem
   {
     protected static int tick_idle_interval = 20; // ca 1000ms, simulates suction delay and saves CPU when not drained.
     protected static int max_flowrate = 1000;
-    protected static int tank_capacity_mb = max_flowrate * 2;
     private final IFluidTankProperties[] fluid_props_ = {this};
     private final InputFillHandler fill_handler_ = new InputFillHandler(this);
     private EnumFacing block_facing_ = EnumFacing.NORTH;
     private FluidStack tank_ = null;
-    private FluidStack last_drain_request_fluid_ = null;
     private int last_drain_request_amount_ = 0;
     private int vacuum_ = 0;
     private int tick_timer_ = 0;
     private int round_robin_ = 0;
     private boolean initialized_ = false;
 
+
+    private int total_volume_filled_ = 0;
+    private int total_volume_drained_ = 0;
+    @Deprecated
+    public void debug_info_dump(EntityPlayer player)
+    {
+      int t_vol = (tank_==null) ? 0 : (tank_.amount);
+      ModAuxiliaries.playerChatMessage(player,"pfacc I:" + total_volume_filled_ + " O:" + total_volume_drained_ + " B:" + t_vol);
+    }
+
     public void block_changed()
     { initialized_ = false; tick_timer_ = MathHelper.clamp(tick_timer_ , 0, tick_idle_interval); }
 
@@ -79,39 +104,16 @@ public class BlockDecorPassiveFluidAccumulator extends BlockDecorDirected implem
       private final BTileEntity parent_;
       private final IFluidTankProperties[] props_ = {this};
       InputFillHandler(BTileEntity parent) { parent_ = parent; }
+      @Override public int fill(FluidStack resource, boolean doFill) { return 0; }
       @Override @Nullable public FluidStack drain(FluidStack resource, boolean doDrain) { return null; }
       @Override @Nullable public FluidStack drain(int maxDrain, boolean doDrain) { return null; }
+      @Override @Nullable public FluidStack getContents() { return null; }
       @Override public IFluidTankProperties[] getTankProperties() { return props_; }
-      @Override public int getCapacity() { return tank_capacity_mb; }
+      @Override public int getCapacity() { return max_flowrate; }
       @Override public boolean canFill() { return true; }
       @Override public boolean canDrain() { return false; }
       @Override public boolean canFillFluidType(FluidStack fluidStack) { return true; }
       @Override public boolean canDrainFluidType(FluidStack fluidStack) { return false; }
-
-      @Nullable
-      @Override public FluidStack getContents()
-      {
-        if(parent_.tank_==null) return null;
-        FluidStack res = parent_.tank_.copy();
-        if(res.amount > max_flowrate) res.amount = max_flowrate;
-        return res;
-      }
-
-      @Override public int fill(FluidStack resource, boolean doFill)
-      {
-        if(!parent_.initialized_) return 0;
-        FluidStack res = resource.copy();
-        if(parent_.tank_ == null) {
-          res.amount = MathHelper.clamp(res.amount, 0, max_flowrate*2);
-          if(doFill) parent_.tank_ = res;
-          return res.amount;
-        } else {
-          res.amount = MathHelper.clamp(res.amount, 0, Math.min(max_flowrate*2, tank_capacity_mb-parent_.tank_.amount));
-          if((res.amount <= 0) || (!parent_.tank_.isFluidEqual(resource))) return 0;
-          if(doFill) parent_.tank_.amount += res.amount;
-          return res.amount;
-        }
-      }
     }
 
     // TileEntity ------------------------------------------------------------------------------
@@ -170,8 +172,8 @@ public class BlockDecorPassiveFluidAccumulator extends BlockDecorDirected implem
     @Nullable
     public FluidStack drain(FluidStack resource, boolean doDrain)
     {
-      if(doDrain) last_drain_request_fluid_ = resource.copy();
+      if((resource==null) || (tank_==null)) return null;
-      return ((tank_==null) || (!tank_.isFluidEqual(resource))) ? (null) : drain(resource.amount, doDrain);
+      return (!(tank_.isFluidEqual(resource))) ? (null) : drain(resource.amount, doDrain);
     }
 
     @Override
@@ -179,18 +181,15 @@ public class BlockDecorPassiveFluidAccumulator extends BlockDecorDirected implem
     public FluidStack drain(int maxDrain, boolean doDrain)
     {
       if(!initialized_) return null;
-      if(doDrain) last_drain_request_amount_ = maxDrain;
+      if(doDrain && (maxDrain > 0)) last_drain_request_amount_ = maxDrain;
       if(tank_==null) return null;
-      FluidStack res;
+      maxDrain = MathHelper.clamp(maxDrain ,0 , tank_.amount);
-      if(maxDrain >= tank_.amount) {
+      if(!doDrain) return tank_.copy();
-        if(!doDrain) return tank_.copy();
+      FluidStack res = tank_.copy();
-        res = tank_;
+      res.amount = maxDrain;
-        tank_ = null;
+      tank_.amount -= maxDrain;
-      } else {
+      if(tank_.amount <= 0) tank_= null;
-        res = tank_.copy();
+      total_volume_drained_ += res.amount;
-        res.amount = maxDrain;
-        if(doDrain) tank_.amount -= maxDrain;
-      }
       return res;
     }
 
@@ -216,46 +215,53 @@ public class BlockDecorPassiveFluidAccumulator extends BlockDecorDirected implem
         block_facing_ = state.getValue(FACING);
       }
       int n_requested = last_drain_request_amount_;
-      final FluidStack req_res = last_drain_request_fluid_;
       last_drain_request_amount_ = 0;
-      last_drain_request_fluid_ = null;
+      if(n_requested > 0) {
-      if(tank_!=null) {
+        vacuum_ += 2;
-        if((n_requested > 0) && ((req_res == null) || (tank_.isFluidEqual(req_res)))) { vacuum_ += 2; } else { --vacuum_; }
+        if(vacuum_ > 5) vacuum_ = 5;
-        vacuum_ = MathHelper.clamp(vacuum_, 0, 5);
-        if(vacuum_ <= 0) return; // nothing to do, noone's draining or can't because the fuild does not match.
       } else {
-        n_requested = 10; // drip in
+        if((--vacuum_) <= 0) {
+          vacuum_ = 0;
+          if(tank_!=null) {
+            return; // nothing to do, noone's draining.
+          } else {
+            n_requested = 10; // drip in
+          }
+        }
       }
-      int tank_level = MathHelper.clamp( (tank_==null) ? 0 : tank_.amount, 0, tank_capacity_mb);
+      boolean has_refilled = false;
-      if(tank_level >= Math.min(tank_capacity_mb, n_requested * 4)) return; // enough reserve
+      n_requested += (vacuum_ * 50);
-      tick_timer_ = 0; // pull next tick
+      int tank_buffer_needed = n_requested;
-      FluidStack match = (tank_==null) ? (req_res) : (tank_);
+      if(tank_buffer_needed > max_flowrate) tank_buffer_needed = max_flowrate;
       for(int i=0; i<6; ++i) {
         if(++round_robin_ > 5) round_robin_ = 0;
+        if(n_requested <= 0) break;
+        if(((tank_!=null) && (tank_.amount >= tank_buffer_needed))) break;
         final EnumFacing f = EnumFacing.byIndex(round_robin_);
         if(f == block_facing_) continue;
         final TileEntity te = world.getTileEntity(pos.offset(f));
-        if((te==null) || (!te.hasCapability(CapabilityFluidHandler.FLUID_HANDLER_CAPABILITY, f.getOpposite()))) continue;
+        if((te==null) || (te instanceof BTileEntity) || (!te.hasCapability(CapabilityFluidHandler.FLUID_HANDLER_CAPABILITY, f.getOpposite()))) continue;
         final IFluidHandler fh = te.getCapability(CapabilityFluidHandler.FLUID_HANDLER_CAPABILITY, f.getOpposite());
         if(fh==null) continue;
-        int refill = Math.min(Math.max(n_requested, 100), tank_capacity_mb-tank_level);
-        if(refill <= 0) break;
-        FluidStack res;
-        if(match==null) {
-          res = fh.drain(refill, true);
-          if(res != null) match = res.copy();
-        } else {
-          match.amount = refill;
-          res = fh.drain(match.copy(), true);
-        }
-        if(res == null) continue;
         if(tank_==null) {
-          tank_ = res;
+          FluidStack res = fh.drain(n_requested, true);
+          if((res == null) || (res.amount==0)) continue;
+          total_volume_filled_ += res.amount;
+          tank_ = res.copy();
+          has_refilled = true;
         } else {
+          if((tank_.amount + n_requested) > max_flowrate) n_requested = (max_flowrate - tank_.amount);
+          FluidStack rq = tank_.copy();
+          rq.amount = n_requested;
+          FluidStack res = fh.drain(rq, true);
+          if(res == null) continue;
           tank_.amount += res.amount;
+          total_volume_filled_ += res.amount;
+          has_refilled = true;
+          if(tank_.amount >= max_flowrate) break;
         }
-        if(tank_.amount >= tank_capacity_mb) break;
       }
+      if(has_refilled) tick_timer_ = 0;
     }
   }
 }

1.12/src/main/java/wile/engineersdecor/blocks/BlockDecorPipeValve.java

@@ -9,21 +9,23 @@
  */
 package wile.engineersdecor.blocks;
 
-import net.minecraft.util.EnumHand;
 import wile.engineersdecor.ModEngineersDecor;
+import blusunrize.immersiveengineering.api.fluid.IFluidPipe;
+import net.minecraft.block.state.BlockFaceShape;
 import net.minecraft.block.properties.PropertyInteger;
 import net.minecraft.block.state.BlockStateContainer;
-import net.minecraft.item.ItemStack;
 import net.minecraft.block.Block;
 import net.minecraft.block.SoundType;
 import net.minecraft.block.material.Material;
 import net.minecraft.block.state.IBlockState;
+import net.minecraft.item.ItemStack;
 import net.minecraft.entity.EntityLivingBase;
 import net.minecraft.nbt.NBTTagCompound;
 import net.minecraft.tileentity.TileEntity;
-import net.minecraft.util.math.MathHelper;
 import net.minecraft.world.IBlockAccess;
 import net.minecraft.world.World;
+import net.minecraft.util.math.MathHelper;
+import net.minecraft.util.EnumHand;
 import net.minecraft.util.EnumFacing;
 import net.minecraft.util.math.AxisAlignedBB;
 import net.minecraft.util.math.BlockPos;
@@ -81,9 +83,7 @@ public class BlockDecorPipeValve extends BlockDecorDirected
       if(f.getAxis() == bfa) continue;
       BlockPos nbp = pos.offset(f);
       IBlockState nbs = world.getBlockState(nbp);
-      if(nbs.canProvidePower() && (nbs.getBlock().canConnectRedstone(nbs, world, nbp, f))) {
+      if(nbs.canProvidePower()) return state.withProperty(RS_CONNECTION_DIR, rsconnectors[state.getValue(FACING).getIndex()][f.getIndex()]);
-        return state.withProperty(RS_CONNECTION_DIR, rsconnectors[state.getValue(FACING).getIndex()][f.getIndex()]);
-      }
     }
     return state.withProperty(RS_CONNECTION_DIR, 0);
   }
@@ -102,6 +102,11 @@ public class BlockDecorPipeValve extends BlockDecorDirected
     world.notifyNeighborsOfStateChange(pos, this, true);
   }
 
+  @Override
+  public BlockFaceShape getBlockFaceShape(IBlockAccess worldIn, IBlockState state, BlockPos pos, EnumFacing face)
+  { return BlockFaceShape.SOLID; }
+
+  @Override
   public boolean canConnectRedstone(IBlockState state, IBlockAccess world, BlockPos pos, @Nullable EnumFacing side)
   { return (side!=null) && (side!=state.getValue(FACING)) && (side!=state.getValue(FACING).getOpposite()); }
 
@@ -123,7 +128,7 @@ public class BlockDecorPipeValve extends BlockDecorDirected
   // Tile entity
   //--------------------------------------------------------------------------------------------------------------------
 
-  public static class BTileEntity extends TileEntity implements IFluidHandler, IFluidTankProperties, ICapabilityProvider
+  public static class BTileEntity extends TileEntity implements IFluidHandler, IFluidTankProperties, ICapabilityProvider, IFluidPipe
   {
     private static final BackFlowHandler back_flow_handler_ = new BackFlowHandler();
     protected static int fluid_maxflow_mb = 1000;
@@ -131,6 +136,7 @@ public class BlockDecorPipeValve extends BlockDecorDirected
     private final IFluidTankProperties[] fluid_props_ = {this};
     private EnumFacing block_facing_ = EnumFacing.NORTH;
     private boolean filling_ = false;
+    private boolean getlocked_ = false;
     private boolean filling_enabled_ = true;
     private long block_config_ = 0;
 
@@ -224,14 +230,17 @@ public class BlockDecorPipeValve extends BlockDecorDirected
       }
       FluidStack res = resource.copy();
       if(res.amount > fluid_maxflow_mb) res.amount = fluid_maxflow_mb;
-      if(res.amount > 50) {
-        // forward pressureized tag
-        if(res.tag==null) res.tag = new NBTTagCompound();
-        res.tag.setBoolean("pressurized", true);
-      }
       final IFluidHandler fh = forward_fluid_handler();
       if(fh==null) return 0;
       filling_ = true; // in case someone does not check the cap, but just "forwards back" what is beeing filled right now.
+      if(res.amount > 50) {
+        final TileEntity te = world.getTileEntity(pos.offset(block_facing_));
+        if(te instanceof IFluidPipe) {
+          // forward pressureized tag
+          if(res.tag == null) res.tag = new NBTTagCompound();
+          res.tag.setBoolean("pressurized", true);
+        }
+      }
       int n_filled = forward_fluid_handler().fill(res, doFill);
       filling_ = false;
       //if(n_filled > 0) System.out.println("F:" + resource.amount + "->" + n_filled);
@@ -260,7 +269,7 @@ public class BlockDecorPipeValve extends BlockDecorDirected
     { return null; }
 
     public int getCapacity()
-    { return 10000; }
+    { return 1000; }
 
     @Override
     public boolean canFill()
@@ -295,5 +304,23 @@ public class BlockDecorPipeValve extends BlockDecorDirected
       @Override public boolean canDrainFluidType(FluidStack fluidStack) { return false; }
     }
 
+    // IFluidPipe
+
+    @Override
+    public boolean hasOutputConnection(EnumFacing side)
+    { return (side == block_facing_); }
+
+    @Override
+    public boolean canOutputPressurized(boolean consumePower)
+    {
+      if(getlocked_ || (!filling_enabled_)) return false;
+      final TileEntity te = world.getTileEntity(pos.offset(block_facing_));
+      if(!(te instanceof IFluidPipe)) return false;
+      getlocked_ = true; // not sure if IE explicitly pre-detects loops, so let's lock recurion here, too.
+      boolean r = ((IFluidPipe)te).canOutputPressurized(consumePower);
+      getlocked_ = false;
+      return r;
+    }
+
   }
 }

1.12/src/main/java/wile/engineersdecor/detail/ModAuxiliaries.java

@@ -8,6 +8,7 @@
  */
 package wile.engineersdecor.detail;
 
+import net.minecraft.entity.player.EntityPlayer;
 import wile.engineersdecor.ModEngineersDecor;
 import net.minecraft.world.World;
 import net.minecraft.item.ItemStack;
@@ -145,5 +146,13 @@ public class ModAuxiliaries
     return bb;
   }
 
+  @SuppressWarnings("unused")
+  public static void playerChatMessage(EntityPlayer player, final String message)
+  {
+    String s = message.trim();
+    if(!s.isEmpty()) player.sendMessage(new TextComponentTranslation(s));
+  }
+
+  @SuppressWarnings("unused")
   public interface IExperimentalFeature{}
 }

1.12/src/main/resources/assets/engineersdecor/models/block/pipe/passive_fluid_accumulator_model.json

@@ -22,11 +22,11 @@
 			"to": [16, 16, 16],
 			"faces": {
 				"north": {"uv": [0, 0, 16, 16], "texture": "#end"},
-				"east": {"uv": [0, 1, 16, 16], "rotation": 90, "texture": "#side"},
+				"east": {"uv": [0, 0, 15, 16], "texture": "#side"},
 				"south": {"uv": [0, 0, 16, 16], "texture": "#back"},
-				"west": {"uv": [0, 1, 16, 16], "rotation": 270, "texture": "#side"},
+				"west": {"uv": [1, 0, 16, 16], "texture": "#side"},
-				"up": {"uv": [0, 1, 16, 16], "texture": "#side"},
+				"up": {"uv": [0, 0, 16, 15], "texture": "#side"},
-				"down": {"uv": [0, 1, 16, 16], "rotation": 180, "texture": "#side"}
+				"down": {"uv": [0, 0, 16, 15], "rotation": 180, "texture": "#side"}
 			}
 		}
 	],

1.12/src/main/resources/assets/engineersdecor/models/block/pipe/straight_pipe_valve_rs_connector_submodel.json

@@ -6,14 +6,26 @@
 	},
 	"elements": [
 		{
-			"from": [5, 5, 0],
+			"from": [5, 5, 2],
 			"to": [11, 11, 3],
 			"faces": {
 				"north": {"uv": [5, 5, 11, 11], "rotation": 90, "texture": "#rsend"},
-				"east": {"uv": [13, 5, 16, 11], "texture": "#rsside"},
+				"east": {"uv": [13, 5, 14, 11], "texture": "#rsside"},
-				"west": {"uv": [13, 5, 16, 11], "rotation": 180, "texture": "#rsside"},
+				"west": {"uv": [13, 5, 14, 11], "rotation": 180, "texture": "#rsside"},
-				"up": {"uv": [13, 5, 16, 11], "rotation": 270, "texture": "#rsside"},
+				"up": {"uv": [13, 5, 14, 11], "rotation": 270, "texture": "#rsside"},
-				"down": {"uv": [13, 5, 16, 11], "rotation": 90, "texture": "#rsside"}
+				"down": {"uv": [13, 5, 14, 11], "rotation": 90, "texture": "#rsside"}
+			}
+		},
+		{
+			"from": [4, 4, 0],
+			"to": [12, 12, 2],
+			"faces": {
+				"north": {"uv": [4, 4, 12, 12], "rotation": 90, "texture": "#rsend"},
+				"east": {"uv": [13, 4, 16, 12], "texture": "#rsside"},
+				"south": {"uv": [4, 4, 12, 12], "texture": "#rsend"},
+				"west": {"uv": [13, 4, 16, 12], "rotation": 180, "texture": "#rsside"},
+				"up": {"uv": [13, 4, 16, 12], "rotation": 270, "texture": "#rsside"},
+				"down": {"uv": [13, 4, 16, 12], "rotation": 90, "texture": "#rsside"}
 			}
 		}
 	],

meta/update.json

@@ -1,6 +1,7 @@
 {
   "homepage": "https://www.curseforge.com/minecraft/mc-mods/engineers-decor/",
   "1.12.2": {
+    "1.0.4-b9": "[F] Inserting fluids with pressurized tag only into IE piping.\n[F] Valve redstone connector rendering does not check for \"can connect redstone\" but only for \"can provide power\".\n[M] Valves are adpted to be detected as pipe by IE.",
     "1.0.4-b8": "[F] Fixed stairs rendering without smooth light (thanks rastot9).\n[E] Added passive fluid accumulator (experimental feature, see config).",
     "1.0.4-b7": "[F] Fixed recipe loading issue if IE is not installed.\n[M] Valves support IE pressurized fluid transfer.",
     "1.0.4-b6": "[A] Added redstone controlled fluid valve.\n[A] Added redstone controlled analog fluid valve.\n[M] Check valve recipe adapted (thanks majijn).",
@@ -41,7 +42,7 @@
   },
   "promos": {
     "1.12.2-recommended": "1.0.3",
-    "1.12.2-latest": "1.0.4-b8",
+    "1.12.2-latest": "1.0.4-b9",
     "1.13.2-recommended": "",
     "1.13.2-latest": "1.0.4-b3"
   }