Merge branch '6.5.x' of github.com:BuildCraft/BuildCraft into 7.1.x

api/buildcraft/api/blueprints/Schematic.java

@@ -38,7 +38,7 @@ public abstract class Schematic {
 	 * Blocks are build in various stages, in order to make sure that a block
 	 * can indeed be placed, and that it's unlikely to disturb other blocks.
 	 */
-	public static enum BuildingStage {
+	public enum BuildingStage {
 		/**
 		 * Standalone blocks can be placed in the air, and they don't change
 		 * once placed.

api/buildcraft/api/robots/AIRobot.java

@@ -194,9 +194,9 @@ public class AIRobot {
 				if (aiRobotClass != null) {
 					delegateAI = (AIRobot) aiRobotClass.getConstructor(EntityRobotBase.class)
 							.newInstance(robot);
+					delegateAI.parentAI = this;
 
 					if (delegateAI.canLoadFromNBT()) {
-						delegateAI.parentAI = this;
 						delegateAI.loadFromNBT(sub);
 					}
 				}

build.gradle

@@ -22,7 +22,7 @@ apply plugin: 'forge' // adds the forge dependency
 apply plugin: 'maven' // for uploading to a maven repo
 apply plugin: 'checkstyle'
 
-version = "7.0.13"
+version = "7.0.14"
 group= "com.mod-buildcraft"
 archivesBaseName = "buildcraft" // the name that all artifacts will use as a base. artifacts names follow this pattern: [baseName]-[appendix]-[version]-[classifier].[extension]
 

buildcraft_resources/changelog/7.0.14

@@ -0,0 +1,19 @@
+Improvements:
+
+* Quarries now dig through light fluids and stop on dense fluids. Behaviour might change later, so watch out! (asie)
+
+Bugs fixed:
+
+* [#2880] Try to fix fluid pipe bug (asie)
+* [#2878] Robot NPE for robots prior to 7.0.13 fix (asie)
+* [#2877] Survival blueprint crash (asie)
+* [#2841] Another crash with Oil in the Nether (asie)
+* [#2837] Massive lag with Construction Markers (hea3ven)
+* [#2831] Robots sinking through the ground (hea3ven)
+* [#2825, #2618, #1777] Quarry issues with just about every translucent block (asie)
+* Allow Builders to use arbitrary IPathProviders (asie)
+* Block breaking robots sleeping in mid air (hea3ven)
+* Error in robot AI loading (hea3ven)
+* Incorrect Request Needed Items action name (asie)
+* Packages crashing Minecraft if mods are removed (asie)
+* Robots ignoring gate config on their linked station when equipping items (hea3ven)

buildcraft_resources/versions.txt

@@ -1,3 +1,3 @@
 1.6.4:BuildCraft:4.2.2
 1.7.2:BuildCraft:6.0.16
-1.7.10:BuildCraft:7.0.13
+1.7.10:BuildCraft:7.0.14

common/buildcraft/BuildCraftCore.java

@@ -489,7 +489,6 @@ public class BuildCraftCore extends BuildCraftMod {
 		BuildCraftAPI.softBlocks.add(Blocks.snow);
 		BuildCraftAPI.softBlocks.add(Blocks.vine);
 		BuildCraftAPI.softBlocks.add(Blocks.fire);
-		BuildCraftAPI.softBlocks.add(Blocks.air);
 
 		FMLCommonHandler.instance().bus().register(new TickHandlerCore());
 

common/buildcraft/builders/LibraryDatabase.java

@@ -152,22 +152,26 @@ public class LibraryDatabase {
 				int sepIndex = fileName.lastIndexOf(LibraryId.BPT_SEP_CHARACTER);
 				int dotIndex = fileName.lastIndexOf('.');
 
-				String extension = fileName.substring(dotIndex + 1);
+				if (dotIndex > 0) {
+					String extension = fileName.substring(dotIndex + 1);
 
-				if (sepIndex > 0) {
+					if (sepIndex > 0) {
-					String prefix = fileName.substring(0, sepIndex);
+						String prefix = fileName.substring(0, sepIndex);
-					String suffix = fileName.substring(sepIndex + 1);
+						String suffix = fileName.substring(sepIndex + 1);
 
-					id.name = prefix;
+						id.name = prefix;
-					id.uniqueId = LibraryId.toBytes(suffix.substring(0, suffix.length() - (extension.length() + 1)));
+						id.uniqueId = LibraryId.toBytes(suffix.substring(0, suffix.length() - (extension.length() + 1)));
+					} else {
+						id.name = fileName.substring(0, dotIndex);
+						id.uniqueId = new byte[0];
+					}
+					id.extension = extension;
+
+					if (!blueprintIds.contains(id)) {
+						blueprintIds.add(id);
+					}
 				} else {
-					id.name = fileName.substring(0, dotIndex);
+					BCLog.logger.warn("Found incorrectly named (no extension) blueprint file: '%s'!", fileName);
-					id.uniqueId = new byte[0];
-				}
-				id.extension = extension;
-
-				if (!blueprintIds.contains(id)) {
-					blueprintIds.add(id);
 				}
 			}
 

common/buildcraft/builders/TileConstructionMarker.java

@@ -209,7 +209,6 @@ public class TileConstructionMarker extends TileBuildCraft implements IBuildingI
 	@Override
 	public void receiveCommand(String command, Side side, Object sender, ByteBuf stream) {
 		if (side.isServer() && "uploadBuildersInAction".equals(command)) {
-			BuildCraftCore.instance.sendToServer(new PacketCommand(this, "uploadBuildersInAction", null));
 			for (BuildingItem i : buildersInAction) {
 				BuildCraftCore.instance.sendToPlayer((EntityPlayer) sender, createLaunchItemPacket(i));
 			}

common/buildcraft/builders/TileQuarry.java

@@ -17,6 +17,7 @@ import com.google.common.collect.Sets;
 import io.netty.buffer.ByteBuf;
 
 import net.minecraft.block.Block;
+import net.minecraft.block.BlockLiquid;
 import net.minecraft.entity.item.EntityItem;
 import net.minecraft.entity.player.EntityPlayer;
 import net.minecraft.inventory.ISidedInventory;
@@ -31,6 +32,7 @@ import net.minecraftforge.common.ForgeChunkManager.Ticket;
 import net.minecraftforge.common.ForgeChunkManager.Type;
 import net.minecraftforge.common.util.FakePlayer;
 import net.minecraftforge.common.util.ForgeDirection;
+import net.minecraftforge.fluids.IFluidBlock;
 
 import buildcraft.BuildCraftBuilders;
 import buildcraft.BuildCraftCore;
@@ -313,9 +315,7 @@ public class TileQuarry extends TileAbstractBuilder implements IHasWork, ISidedI
 
 		if (!columnVisitListIsUpdated) { // nextTarget may not be accurate, at least search the target column for changes
 			for (int y = nextTarget[1] + 1; y < yCoord + 3; y++) {
-				Block block = worldObj.getBlock(nextTarget[0], y, nextTarget[2]);
+				if (isQuarriableBlock(nextTarget[0], y, nextTarget[2])) {
-				if (BlockUtils.isAnObstructingBlock(block, worldObj, nextTarget[0], y, nextTarget[2])
-						|| !BuildCraftAPI.isSoftBlock(worldObj, nextTarget[0], y, nextTarget[2])) {
 					createColumnVisitList();
 					columnVisitListIsUpdated = true;
 					nextTarget = null;
@@ -340,8 +340,6 @@ public class TileQuarry extends TileAbstractBuilder implements IHasWork, ISidedI
 	 */
 	private void createColumnVisitList() {
 		visitList.clear();
-
-		Integer[][] columnHeights = new Integer[builder.blueprint.sizeX - 2][builder.blueprint.sizeZ - 2];
 		boolean[][] blockedColumns = new boolean[builder.blueprint.sizeX - 2][builder.blueprint.sizeZ - 2];
 
 		for (int searchY = yCoord + 3; searchY >= 1; --searchY) {
@@ -372,29 +370,16 @@ public class TileQuarry extends TileAbstractBuilder implements IHasWork, ISidedI
 
 				for (int searchZ = startZ; searchZ != endZ; searchZ += incZ) {
 					if (!blockedColumns[searchX][searchZ]) {
-						Integer height = columnHeights[searchX][searchZ];
 						int bx = box.xMin + searchX + 1, by = searchY, bz = box.zMin + searchZ + 1;
 
-						if (height == null) {
-							columnHeights[searchX][searchZ] = height = worldObj.getHeightValue(bx, bz);
-						}
-
-						if (height > 0 && height < by && worldObj.provider.dimensionId != -1) {
-							continue;
-						}
-
 						Block block = worldObj.getBlock(bx, by, bz);
 
 						if (!BlockUtils.canChangeBlock(block, worldObj, bx, by, bz)) {
 							blockedColumns[searchX][searchZ] = true;
-						} else if (!BuildCraftAPI.isSoftBlock(worldObj, bx, by, bz)) {
+						} else if (!BuildCraftAPI.isSoftBlock(worldObj, bx, by, bz) && !(block instanceof BlockLiquid) && !(block instanceof IFluidBlock)) {
 							visitList.add(new int[]{bx, by, bz});
 						}
 
-						if (height == 0 && !worldObj.isAirBlock(bx, by, bz)) {
-							columnHeights[searchX][searchZ] = by;
-						}
-
 						// Stop at two planes - generally any obstructions will have been found and will force a recompute prior to this
 
 						if (visitList.size() > builder.blueprint.sizeZ * builder.blueprint.sizeX * 2) {
@@ -487,7 +472,8 @@ public class TileQuarry extends TileAbstractBuilder implements IHasWork, ISidedI
 	private boolean isQuarriableBlock(int bx, int by, int bz) {
 		Block block = worldObj.getBlock(bx, by, bz);
 		return BlockUtils.canChangeBlock(block, worldObj, bx, by, bz)
-				&& !BuildCraftAPI.isSoftBlock(worldObj, bx, by, bz);
+				&& !BuildCraftAPI.isSoftBlock(worldObj, bx, by, bz)
+				&& !(block instanceof BlockLiquid) && !(block instanceof IFluidBlock);
 	}
 
 	@Override

common/buildcraft/core/TilePathMarker.java

@@ -11,7 +11,6 @@ package buildcraft.core;
 import java.util.ArrayList;
 import java.util.HashSet;
 import java.util.Iterator;
-import java.util.LinkedList;
 
 import io.netty.buffer.ByteBuf;
 

common/buildcraft/core/blueprints/BptBuilderBlueprint.java

@@ -265,8 +265,10 @@ public class BptBuilderBlueprint extends BptBuilderBase {
 
 	private int getBuildListCount() {
 		int out = 0;
-		for (int i = 0; i < buildStageOccurences.length; i++) {
+		if (buildStageOccurences != null) {
-			out += buildStageOccurences[i];
+			for (int i = 0; i < buildStageOccurences.length; i++) {
+				out += buildStageOccurences[i];
+			}
 		}
 		return out;
 	}

common/buildcraft/core/lib/block/BlockBuildCraftFluid.java

@@ -186,7 +186,7 @@ public class BlockBuildCraftFluid extends BlockFluidClassic {
 	}
 
 	@Override
-	public boolean canDropFromExplosion(Explosion p_149659_1_) {
+	public boolean canDropFromExplosion(Explosion explosion) {
 		return false;
 	}
 }

common/buildcraft/core/lib/utils/BlockUtils.java

@@ -119,6 +119,7 @@ public final class BlockUtils {
 		world.spawnEntityInWorld(entityitem);
 	}
 
+	@Deprecated
 	public static boolean isAnObstructingBlock(Block block, World world, int x, int y, int z) {
 		if (block == null || block.isAir(world, x, y, z)) {
 			return false;
@@ -139,13 +140,13 @@ public final class BlockUtils {
 			return false;
 		}
 
-		// TODO: Make this support all "heavy" liquids, not just oil/lava
-		if (block instanceof IFluidBlock && ((IFluidBlock) block).getFluid() != null && "oil".equals(((IFluidBlock) block).getFluid().getName())) {
-			return false;
-		}
-
 		if (block == Blocks.lava || block == Blocks.flowing_lava) {
 			return false;
+		} else if (block instanceof IFluidBlock && ((IFluidBlock) block).getFluid() != null) {
+			Fluid f = ((IFluidBlock) block).getFluid();
+			if (f.getDensity(world, x, y, z) >= 3000) {
+				return false;
+			}
 		}
 
 		return true;

common/buildcraft/core/properties/WorldPropertyIsSoft.java

@@ -14,7 +14,6 @@ import net.minecraft.world.IBlockAccess;
 import buildcraft.api.core.BuildCraftAPI;
 
 public class WorldPropertyIsSoft extends WorldProperty {
-
 	@Override
 	public boolean get(IBlockAccess blockAccess, Block block, int meta, int x, int y, int z) {
 		return block == null

common/buildcraft/robotics/DockingStationPipe.java

@@ -62,7 +62,10 @@ public class DockingStationPipe extends DockingStation {
 
 	public IPipeTile getPipe() {
 		if (pipe == null) {
-			pipe = (IPipeTile) world.getTileEntity(x(), y(), z());
+			TileEntity tile = world.getTileEntity(x(), y(), z());
+			if (tile instanceof IPipeTile) {
+				pipe = (IPipeTile) tile;
+			}
 		}
 
 		if (pipe == null || ((TileEntity) pipe).isInvalid()) {

common/buildcraft/robotics/ai/AIRobotFetchAndEquipItemStack.java

@@ -10,11 +10,10 @@ package buildcraft.robotics.ai;
 
 import net.minecraft.inventory.IInventory;
 import net.minecraft.item.ItemStack;
-import net.minecraft.tileentity.TileEntity;
+
 import net.minecraftforge.common.util.ForgeDirection;
 
 import buildcraft.api.robots.AIRobot;
-import buildcraft.api.robots.DockingStation;
 import buildcraft.api.robots.EntityRobotBase;
 import buildcraft.core.lib.inventory.ITransactor;
 import buildcraft.core.lib.inventory.Transactor;
@@ -37,18 +36,24 @@ public class AIRobotFetchAndEquipItemStack extends AIRobot {
 		filter = new AggregateFilter(ActionRobotFilterTool.getGateFilter(iRobot.getLinkedStation()), iFilter);
 	}
 
+	@Override
+	public void start() {
+		startDelegateAI(new AIRobotGotoStationToLoad(robot, filter, 1));
+	}
+
 	@Override
 	public void update() {
 		if (robot.getDockingStation() == null) {
-			startDelegateAI(new AIRobotGotoStationToLoad(robot, filter, 1));
+			setSuccess(false);
-		} else {
+			terminate();
-			if (delay++ > 40) {
+		}
-				if (equipItemStack()) {
+
-					terminate();
+		if (delay++ > 40) {
-				} else {
+			if (equipItemStack()) {
-					delay = 0;
+				terminate();
-					startDelegateAI(new AIRobotGotoStationToLoad(robot, filter, 1));
+			} else {
-				}
+				delay = 0;
+				startDelegateAI(new AIRobotGotoStationToLoad(robot, filter, 1));
 			}
 		}
 	}
@@ -71,31 +76,20 @@ public class AIRobotFetchAndEquipItemStack extends AIRobot {
 	}
 
 	private boolean equipItemStack() {
-		if (robot.getDockingStation() != null) {
+		IInventory tileInventory = robot.getDockingStation().getItemInput();
-			DockingStation station = robot.getDockingStation();
+		if (tileInventory == null) {
-
+			return false;
-			ItemStack itemFound = null;
-
-			for (ForgeDirection dir : ForgeDirection.VALID_DIRECTIONS) {
-				TileEntity nearbyTile = robot.worldObj.getTileEntity(station.x() + dir.offsetX,
-						station.y() + dir.offsetY, station.z() + dir.offsetZ);
-
-				if (nearbyTile != null && nearbyTile instanceof IInventory) {
-					ITransactor trans = Transactor.getTransactorFor(nearbyTile);
-
-					itemFound = trans.remove(filter, dir.getOpposite(), true);
-
-					if (itemFound != null) {
-						break;
-					}
-				}
-			}
-
-			if (itemFound != null) {
-				robot.setItemInUse(itemFound);
-				return true;
-			}
 		}
+
+		ITransactor trans = Transactor.getTransactorFor(tileInventory);
+
+		ItemStack itemFound = trans.remove(filter, ForgeDirection.UNKNOWN, true);
+
+		if (itemFound != null) {
+			robot.setItemInUse(itemFound);
+			return true;
+		}
+
 		return false;
 	}
 }

common/buildcraft/robotics/ai/AIRobotGoAndLinkToDock.java

@@ -36,7 +36,7 @@ public class AIRobotGoAndLinkToDock extends AIRobot {
 		if (station == robot.getLinkedStation() && station == robot.getDockingStation()) {
 			terminate();
 		} else {
-			if (station.takeAsMain(robot)) {
+			if (station != null && station.takeAsMain(robot)) {
 				startDelegateAI(new AIRobotGotoBlock(robot,
 						station.x() + station.side().offsetX * 2,
 						station.y() + station.side().offsetY * 2,
@@ -52,10 +52,10 @@ public class AIRobotGoAndLinkToDock extends AIRobot {
 	public void delegateAIEnded(AIRobot ai) {
 		if (ai instanceof AIRobotGotoBlock) {
 			if (ai.success()) {
-			startDelegateAI(new AIRobotStraightMoveTo(robot,
+				startDelegateAI(new AIRobotStraightMoveTo(robot,
-					station.x() + 0.5F + station.side().offsetX * 0.5F,
+						station.x() + 0.5F + station.side().offsetX * 0.5F,
-					station.y() + 0.5F + station.side().offsetY * 0.5F,
+						station.y() + 0.5F + station.side().offsetY * 0.5F,
-					station.z() + 0.5F + station.side().offsetZ * 0.5F));
+						station.z() + 0.5F + station.side().offsetZ * 0.5F));
 			} else {
 				terminate();
 			}

common/buildcraft/robotics/boards/BoardRobotGenericBreakBlock.java

@@ -15,7 +15,7 @@ import buildcraft.api.robots.EntityRobotBase;
 import buildcraft.core.lib.inventory.filters.IStackFilter;
 import buildcraft.robotics.ai.AIRobotBreak;
 import buildcraft.robotics.ai.AIRobotFetchAndEquipItemStack;
-import buildcraft.robotics.ai.AIRobotSleep;
+import buildcraft.robotics.ai.AIRobotGotoSleep;
 
 public abstract class BoardRobotGenericBreakBlock extends BoardRobotGenericSearchBlock {
 
@@ -45,7 +45,7 @@ public abstract class BoardRobotGenericBreakBlock extends BoardRobotGenericSearc
 	public void delegateAIEnded(AIRobot ai) {
 		if (ai instanceof AIRobotFetchAndEquipItemStack) {
 			if (!ai.success()) {
-				startDelegateAI(new AIRobotSleep(robot));
+				startDelegateAI(new AIRobotGotoSleep(robot));
 			}
 		} else if (ai instanceof AIRobotBreak) {
 			releaseBlockFound(ai.success());

common/buildcraft/silicon/TileStampingTable.java

@@ -112,7 +112,12 @@ public class TileStampingTable extends TileLaserTableBase implements IHasWork, I
                 NBTTagCompound tag = NBTUtils.getItemData(input);
                 for (int i = 0; i < 9; i++) {
                     if (tag.hasKey("item" + i)) {
-                        crafting.setInventorySlotContents(i, ItemStack.loadItemStackFromNBT(tag.getCompoundTag("item" + i)));
+                        ItemStack is = ItemStack.loadItemStackFromNBT(tag.getCompoundTag("item" + i));
+                        if (is != null) {
+                            crafting.setInventorySlotContents(i, is);
+                        } else {
+                            return;
+                        }
                     } else {
                         crafting.setInventorySlotContents(i, null);
                     }

common/buildcraft/silicon/render/PackageFontRenderer.java

@@ -47,18 +47,22 @@ public class PackageFontRenderer extends FontRenderer {
 
 			if (pkgTag.hasKey("item" + slotPos)) {
 				ItemStack slotStack = ItemStack.loadItemStackFromNBT(pkgTag.getCompoundTag("item" + slotPos));
-				GL11.glTranslatef(0.0F, 0.0F, 32.0F);
+				if (slotStack != null) {
-				GL11.glScalef(0.5F, 0.5F, 0.5F);
+					GL11.glTranslatef(0.0F, 0.0F, 32.0F);
-				FontRenderer font = slotStack.getItem().getFontRenderer(slotStack);
+					GL11.glScalef(0.5F, 0.5F, 0.5F);
-				itemRender.zLevel = 200.0F;
+					FontRenderer font = slotStack.getItem().getFontRenderer(slotStack);
+					itemRender.zLevel = 200.0F;
 
-				if (font == null || font instanceof PackageFontRenderer) {
+					if (font == null || font instanceof PackageFontRenderer) {
-					font = Minecraft.getMinecraft().fontRenderer;
+						font = Minecraft.getMinecraft().fontRenderer;
+					}
+
+					itemRender.renderItemAndEffectIntoGUI(font, this.mc.getTextureManager(), slotStack, rx * 2, y * 2);
+					itemRender.renderItemOverlayIntoGUI(font, this.mc.getTextureManager(), slotStack, rx * 2, y * 2);
+					itemRender.zLevel = 0.0F;
+				} else {
+					realRenderer.drawString("X", rx, y, 0xFF0000);
 				}
-
-				itemRender.renderItemAndEffectIntoGUI(font, this.mc.getTextureManager(), slotStack, rx * 2, y * 2);
-				itemRender.renderItemOverlayIntoGUI(font, this.mc.getTextureManager(), slotStack, rx * 2, y * 2);
-				itemRender.zLevel = 0.0F;
 			}
 
 			rx += 7;

common/buildcraft/transport/PipeTransportFluids.java

@@ -226,9 +226,7 @@ public class PipeTransportFluids extends PipeTransport implements IFluidHandler
 			return;
 		}
 
-		if (fluidType != null) {
+		moveFluids();
-			moveFluids();
-		}
 
 		if (networkSyncTracker.markTimeIfDelay(container.getWorldObj())) {
 			boolean init = false;
@@ -245,17 +243,22 @@ public class PipeTransportFluids extends PipeTransport implements IFluidHandler
 	}
 
 	private void moveFluids() {
-		short newTimeSlot = (short) (container.getWorldObj().getTotalWorldTime() % travelDelay);
+		if (fluidType != null) {
-		short outputCount = computeCurrentConnectionStatesAndTickFlows(newTimeSlot > 0 && newTimeSlot < travelDelay ? newTimeSlot : 0);
+			short newTimeSlot = (short) (container.getWorldObj().getTotalWorldTime() % travelDelay);
+			int outputCount = computeCurrentConnectionStatesAndTickFlows(newTimeSlot > 0 && newTimeSlot < travelDelay ? newTimeSlot : 0);
 
-		moveFromPipe(outputCount);
+			if (fluidType != null) {
-		moveFromCenter();
+				moveFromPipe(outputCount);
-		moveToCenter();
+				moveFromCenter();
+				moveToCenter();
+			}
+		} else {
+			computeTTLs();
+		}
 	}
 
-	private void moveFromPipe(short outputCount) {
+	private void moveFromPipe(int outputCount) {
 		// Move liquid from the non-center to the connected output blocks
-		boolean pushed = false;
 		if (outputCount > 0) {
 			for (ForgeDirection o : directions) {
 				if (transferState[o.ordinal()] == TransferState.Output) {
@@ -270,7 +273,6 @@ public class PipeTransportFluids extends PipeTransport implements IFluidHandler
 					if (liquidToPush.amount > 0) {
 						int filled = ((IFluidHandler) target).fill(o.getOpposite(), liquidToPush, true);
 						section.drain(filled, true);
-						pushed = true;
 						if (filled <= 0) {
 							outputTTL[o.ordinal()]--;
 						}
@@ -278,19 +280,6 @@ public class PipeTransportFluids extends PipeTransport implements IFluidHandler
 				}
 			}
 		}
-
-		if (pushed) {
-			boolean hasFluid = false;
-			for (PipeSection s: sections) {
-				if (s.amount > 0) {
-					hasFluid = true;
-					break;
-				}
-			}
-			if (!hasFluid) {
-				setFluidType(null);
-			}
-		}
 	}
 
 	private void moveFromCenter() {
@@ -361,43 +350,76 @@ public class PipeTransportFluids extends PipeTransport implements IFluidHandler
 		}
 	}
 
-	private short computeCurrentConnectionStatesAndTickFlows(short newTimeSlot) {
+	private void computeTTLs() {
-		short outputCount = 0;
+		for (int i = 0; i < 6; i++) {
+			if (transferState[i] == TransferState.Input) {
+				if (inputTTL[i] > 0) {
+					inputTTL[i]--;
+				} else {
+					transferState[i] = TransferState.None;
+				}
+			}
 
-		// Processes all interna4al tanks
+			if (outputCooldown[i] > 0) {
+				outputCooldown[i]--;
+			} else {
+				if (outputTTL[i] > 0) {
+					outputTTL[i]--;
+				} else {
+					transferState[i] = TransferState.None;
+				}
+			}
+		}
+	}
+
+	private int computeCurrentConnectionStatesAndTickFlows(short newTimeSlot) {
+		int outputCount = 0;
+		int fluidAmount = 0;
+
+		// Processes all internal tanks
 		for (ForgeDirection direction : orientations) {
-			sections[direction.ordinal()].setTime(newTimeSlot);
+			int dirI = direction.ordinal();
-			sections[direction.ordinal()].moveFluids();
+			PipeSection section = sections[dirI];
+
+			fluidAmount += section.amount;
+			section.setTime(newTimeSlot);
+			section.moveFluids();
+
 			// Input processing
 			if (direction == ForgeDirection.UNKNOWN) {
 				continue;
 			}
-			if (transferState[direction.ordinal()] == TransferState.Input) {
+			if (transferState[dirI] == TransferState.Input) {
-				inputTTL[direction.ordinal()]--;
+				inputTTL[dirI]--;
-				if (inputTTL[direction.ordinal()] <= 0) {
+				if (inputTTL[dirI] <= 0) {
-					transferState[direction.ordinal()] = TransferState.None;
+					transferState[dirI] = TransferState.None;
 				}
 				continue;
 			}
 			if (!container.pipe.outputOpen(direction)) {
-				transferState[direction.ordinal()] = TransferState.None;
+				transferState[dirI] = TransferState.None;
 				continue;
 			}
-			if (outputCooldown[direction.ordinal()] > 0) {
+			if (outputCooldown[dirI] > 0) {
-				outputCooldown[direction.ordinal()]--;
+				outputCooldown[dirI]--;
 				continue;
 			}
-			if (outputTTL[direction.ordinal()] <= 0) {
+			if (outputTTL[dirI] <= 0) {
-				transferState[direction.ordinal()] = TransferState.None;
+				transferState[dirI] = TransferState.None;
-				outputCooldown[direction.ordinal()] = OUTPUT_COOLDOWN;
+				outputCooldown[dirI] = OUTPUT_COOLDOWN;
-				outputTTL[direction.ordinal()] = OUTPUT_TTL;
+				outputTTL[dirI] = OUTPUT_TTL;
 				continue;
 			}
-			if (canReceiveCache[direction.ordinal()] && outputOpen(direction)) {
+			if (canReceiveCache[dirI] && outputOpen(direction)) {
-				transferState[direction.ordinal()] = TransferState.Output;
+				transferState[dirI] = TransferState.Output;
 				outputCount++;
 			}
 		}
+
+		if (fluidAmount == 0) {
+			setFluidType(null);
+		}
+
 		return outputCount;
 	}