Move face device block logic to separate base class

The extractor currently isn't considered a "face block" because its
network connection is always in the opposite direction of its facing,
unlike the interace.

src/main/kotlin/net/shadowfacts/phycon/PhysicalConnectivity.kt

@@ -7,6 +7,7 @@ import net.shadowfacts.phycon.init.PhyBlocks
 import net.shadowfacts.phycon.init.PhyItems
 import net.shadowfacts.phycon.init.PhyScreens
 import net.shadowfacts.phycon.networking.C2STerminalRequestItem
+import net.shadowfacts.phycon.networking.C2STerminalUpdateDisplayedItems
 import net.shadowfacts.phycon.networking.ServerReceiver
 
 /**
@@ -23,6 +24,7 @@ object PhysicalConnectivity: ModInitializer {
 		PhyScreens.init()
 
 		registerGlobalReceiver(C2STerminalRequestItem)
+		registerGlobalReceiver(C2STerminalUpdateDisplayedItems)
 	}
 
 	private fun registerGlobalReceiver(receiver: ServerReceiver) {

src/main/kotlin/net/shadowfacts/phycon/PhysicalConnectivityClient.kt

@@ -2,19 +2,30 @@ package net.shadowfacts.phycon
 
 import net.fabricmc.api.ClientModInitializer
 import net.fabricmc.fabric.api.blockrenderlayer.v1.BlockRenderLayerMap
+import net.fabricmc.fabric.api.client.networking.v1.ClientPlayNetworking
 import net.fabricmc.fabric.api.client.screenhandler.v1.ScreenRegistry
 import net.minecraft.client.render.RenderLayer
 import net.shadowfacts.phycon.init.PhyBlocks
 import net.shadowfacts.phycon.init.PhyScreens
 import net.shadowfacts.phycon.network.block.terminal.TerminalScreen
+import net.shadowfacts.phycon.networking.ClientReceiver
+import net.shadowfacts.phycon.networking.S2CTerminalUpdateDisplayedItems
 
 /**
  * @author shadowfacts
  */
 object PhysicalConnectivityClient: ClientModInitializer {
+
 	override fun onInitializeClient() {
 		BlockRenderLayerMap.INSTANCE.putBlock(PhyBlocks.CABLE, RenderLayer.getTranslucent())
 
 		ScreenRegistry.register(PhyScreens.TERMINAL_SCREEN_HANDLER, ::TerminalScreen)
+
+		registerGlobalReceiver(S2CTerminalUpdateDisplayedItems)
 	}
+
+	private fun registerGlobalReceiver(receiver: ClientReceiver) {
+		ClientPlayNetworking.registerGlobalReceiver(receiver.CHANNEL, receiver)
+	}
+
 }

src/main/kotlin/net/shadowfacts/phycon/network/FaceDeviceBlock.kt

@@ -0,0 +1,102 @@
+package net.shadowfacts.phycon.network
+
+import net.minecraft.block.Block
+import net.minecraft.block.BlockState
+import net.minecraft.block.ShapeContext
+import net.minecraft.item.ItemPlacementContext
+import net.minecraft.state.StateManager
+import net.minecraft.state.property.EnumProperty
+import net.minecraft.state.property.Properties
+import net.minecraft.util.math.BlockPos
+import net.minecraft.util.math.Direction
+import net.minecraft.util.shape.VoxelShape
+import net.minecraft.util.shape.VoxelShapes
+import net.minecraft.world.BlockView
+import net.minecraft.world.World
+import net.minecraft.world.WorldAccess
+import net.shadowfacts.phycon.api.Interface
+import net.shadowfacts.phycon.api.NetworkComponentBlock
+import net.shadowfacts.phycon.network.block.cable.CableBlock
+import java.util.*
+
+
+/**
+ * @author shadowfacts
+ */
+abstract class FaceDeviceBlock<T: DeviceBlockEntity>(settings: Settings): DeviceBlock<T>(settings) {
+	companion object {
+		val FACING = Properties.FACING
+		val CABLE_CONNECTION = EnumProperty.of("cable_connection", Direction::class.java)
+	}
+
+	protected abstract val faceThickness: Double
+	protected abstract val faceShapes: Map<Direction, VoxelShape>
+	private val centerShapes: Map<Direction, VoxelShape> by lazy {
+		mapOf(
+			Direction.DOWN to createCuboidShape(6.0, faceThickness, 6.0, 10.0, 10.0, 10.0),
+			Direction.UP to createCuboidShape(6.0, 6.0, 6.0, 10.0, 16.0 - faceThickness, 10.0),
+			Direction.NORTH to createCuboidShape(6.0, 6.0, faceThickness, 10.0, 10.0, 10.0),
+			Direction.SOUTH to createCuboidShape(6.0, 6.0, 6.0, 10.0, 10.0, 16.0 - faceThickness),
+			Direction.WEST to createCuboidShape(faceThickness, 6.0, 6.0, 10.0, 10.0, 10.0),
+			Direction.EAST to createCuboidShape(6.0, 6.0, 6.0, 16.0 - faceThickness, 10.0, 10.0)
+		)
+	}
+	private val shapeCache = mutableMapOf<Pair<Direction, Direction>, VoxelShape>()
+
+	fun getShape(facing: Direction, cableConnection: Direction): VoxelShape {
+		return shapeCache.getOrPut(facing to cableConnection) {
+			VoxelShapes.union(
+				faceShapes[facing],
+				centerShapes[facing],
+				CableBlock.SIDE_SHAPES[cableConnection]
+			)
+		}
+	}
+
+	override fun getNetworkConnectedSides(state: BlockState, world: WorldAccess, pos: BlockPos): Collection<Direction> {
+		return EnumSet.of(state[CABLE_CONNECTION])
+	}
+
+	override fun getNetworkInterfaceForSide(side: Direction, state: BlockState, world: WorldAccess, pos: BlockPos): Interface? {
+		return if (side == state[FACING]) {
+			null
+		} else {
+			getBlockEntity(world, pos)
+		}
+	}
+
+	override fun appendProperties(builder: StateManager.Builder<Block, BlockState>) {
+		super.appendProperties(builder)
+		builder.add(FACING)
+		builder.add(CABLE_CONNECTION)
+	}
+
+	override fun getPlacementState(context: ItemPlacementContext): BlockState? {
+		val facing = if (context.player?.isSneaking == true) context.side.opposite else context.playerFacing.opposite
+		val cableConnection = getCableConnectedSide(context.world, context.blockPos) ?: facing.opposite
+		return defaultState
+			.with(FACING, facing)
+			.with(CABLE_CONNECTION, cableConnection)
+	}
+
+	protected fun getCableConnectedSide(world: World, pos: BlockPos): Direction? {
+		for (side in Direction.values()) {
+			val offsetPos = pos.offset(side)
+			if (world.getBlockState(offsetPos) is NetworkComponentBlock) {
+				return side
+			}
+		}
+		return null
+	}
+
+	override fun getStateForNeighborUpdate(state: BlockState, side: Direction, neighborState: BlockState, world: WorldAccess, pos: BlockPos, neighborPos: BlockPos): BlockState {
+		if (neighborState.block is NetworkComponentBlock && world.getBlockState(pos.offset(state[CABLE_CONNECTION])).block !is NetworkComponentBlock) {
+			return state.with(CABLE_CONNECTION, side)
+		}
+		return state
+	}
+
+	override fun getOutlineShape(state: BlockState, world: BlockView, pos: BlockPos, context: ShapeContext): VoxelShape {
+		return getShape(state[FACING], state[CABLE_CONNECTION])
+	}
+}

src/main/kotlin/net/shadowfacts/phycon/network/block/netinterface/InterfaceBlock.kt

@@ -4,38 +4,29 @@ import alexiil.mc.lib.attributes.AttributeList
 import alexiil.mc.lib.attributes.AttributeProvider
 import net.minecraft.block.*
 import net.minecraft.entity.LivingEntity
-import net.minecraft.item.ItemPlacementContext
 import net.minecraft.item.ItemStack
-import net.minecraft.state.StateManager
-import net.minecraft.state.property.EnumProperty
-import net.minecraft.state.property.Properties
 import net.minecraft.util.Identifier
 import net.minecraft.util.math.BlockPos
 import net.minecraft.util.math.Direction
-import net.minecraft.util.shape.VoxelShape
-import net.minecraft.util.shape.VoxelShapes
 import net.minecraft.world.BlockView
 import net.minecraft.world.World
-import net.minecraft.world.WorldAccess
 import net.shadowfacts.phycon.PhysicalConnectivity
 import net.shadowfacts.phycon.api.NetworkComponentBlock
-import net.shadowfacts.phycon.api.Interface
+import net.shadowfacts.phycon.network.FaceDeviceBlock
-import net.shadowfacts.phycon.network.DeviceBlock
-import net.shadowfacts.phycon.network.block.cable.CableBlock
-import java.util.*
 
 /**
  * @author shadowfacts
  */
-class InterfaceBlock: DeviceBlock<InterfaceBlockEntity>(Settings.of(Material.METAL)),
+class InterfaceBlock: FaceDeviceBlock<InterfaceBlockEntity>(Settings.of(Material.METAL)),
 	NetworkComponentBlock,
 	AttributeProvider {
 
 	companion object {
 		val ID = Identifier(PhysicalConnectivity.MODID, "network_interface")
-		val FACING = Properties.FACING
+	}
-		val CABLE_CONNECTION = EnumProperty.of("cable_connection", Direction::class.java)
+
-		private val SIDE_SHAPES = mapOf<Direction, VoxelShape>(
+	override val faceThickness = 2.0
+	override val faceShapes = mapOf(
 		Direction.DOWN to createCuboidShape(2.0, 0.0, 2.0, 14.0, 2.0, 14.0),
 		Direction.UP to createCuboidShape(2.0, 14.0, 2.0, 14.0, 16.0, 14.0),
 		Direction.NORTH to createCuboidShape(2.0, 2.0, 0.0, 14.0, 14.0, 2.0),
@@ -43,64 +34,9 @@ class InterfaceBlock: DeviceBlock<InterfaceBlockEntity>(Settings.of(Material.MET
 		Direction.WEST to createCuboidShape(0.0, 2.0, 2.0, 2.0, 14.0, 14.0),
 		Direction.EAST to createCuboidShape(14.0, 2.0, 2.0, 16.0, 14.0, 14.0)
 	)
-		private val CENTER_SHAPES = mapOf<Direction, VoxelShape>(
-				Direction.DOWN to createCuboidShape(6.0, 2.0, 6.0, 10.0, 10.0, 10.0),
-				Direction.UP to createCuboidShape(6.0, 6.0, 6.0, 10.0, 14.0, 10.0),
-				Direction.NORTH to createCuboidShape(6.0, 6.0, 2.0, 10.0, 10.0, 10.0),
-				Direction.SOUTH to createCuboidShape(6.0, 6.0, 6.0, 10.0, 10.0, 14.0),
-				Direction.WEST to createCuboidShape(2.0, 6.0, 6.0, 10.0, 10.0, 10.0),
-				Direction.EAST to createCuboidShape(6.0, 6.0, 6.0, 14.0, 10.0, 10.0)
-		)
-
-		private val shapeCache = mutableMapOf<Pair<Direction, Direction>, VoxelShape>()
-		fun getShape(facing: Direction, cableConnection: Direction): VoxelShape {
-			return shapeCache.getOrPut(facing to cableConnection) {
-				VoxelShapes.union(
-						VoxelShapes.union(SIDE_SHAPES[facing], CENTER_SHAPES[facing]),
-						CableBlock.SIDE_SHAPES[cableConnection]
-				)
-			}
-		}
-	}
-
-	override fun getNetworkConnectedSides(state: BlockState, world: WorldAccess, pos: BlockPos): Collection<Direction> {
-		val set = EnumSet.of(state[CABLE_CONNECTION])
-		set.remove(state[FACING])
-		return set
-	}
-
-	override fun getNetworkInterfaceForSide(side: Direction, state: BlockState, world: WorldAccess, pos: BlockPos): Interface? {
-		return if (side == state[FACING]) {
-			null
-		} else {
-			getBlockEntity(world, pos)
-		}
-	}
-
-	override fun appendProperties(builder: StateManager.Builder<Block, BlockState>) {
-		super.appendProperties(builder)
-		builder.add(FACING)
-		builder.add(CABLE_CONNECTION)
-	}
 
 	override fun createBlockEntity(world: BlockView) = InterfaceBlockEntity()
 
-	override fun getPlacementState(context: ItemPlacementContext): BlockState {
-		val facing = if (context.player?.isSneaking == true) context.side.opposite else context.playerFacing.opposite
-		val cableConnection = getCableConnectionSide(context.world, context.blockPos) ?: facing.opposite
-		return defaultState.with(FACING, facing).with(CABLE_CONNECTION, cableConnection)
-	}
-
-	private fun getCableConnectionSide(world: World, pos: BlockPos): Direction? {
-		for (side in Direction.values()) {
-			val offsetPos = pos.offset(side)
-			if (world.getBlockState(offsetPos).block is NetworkComponentBlock) {
-				return side
-			}
-		}
-		return null
-	}
-
 	override fun onPlaced(world: World, pos: BlockPos, state: BlockState, placer: LivingEntity?, stack: ItemStack) {
 		if (!world.isClient) {
 			getBlockEntity(world, pos)!!.updateInventory()
@@ -113,19 +49,8 @@ class InterfaceBlock: DeviceBlock<InterfaceBlockEntity>(Settings.of(Material.MET
 		}
 	}
 
-	override fun getStateForNeighborUpdate(state: BlockState, side: Direction, neighborState: BlockState, world: WorldAccess, pos: BlockPos, neighborPos: BlockPos): BlockState {
-		if (neighborState.block is NetworkComponentBlock && world.getBlockState(pos.offset(state[CABLE_CONNECTION])).block !is NetworkComponentBlock) {
-			return state.with(CABLE_CONNECTION, side)
-		}
-		return state
-	}
-
 	override fun addAllAttributes(world: World, pos: BlockPos, state: BlockState, to: AttributeList<*>) {
 		to.offer(getBlockEntity(world, pos))
 	}
 
-	override fun getOutlineShape(state: BlockState, world: BlockView, pos: BlockPos, context: ShapeContext): VoxelShape {
-		return getShape(state[FACING], state[CABLE_CONNECTION])
-	}
-
 }

src/main/kotlin/net/shadowfacts/phycon/network/block/netinterface/InterfaceBlockEntity.kt

@@ -9,6 +9,7 @@ import net.minecraft.util.math.Direction
 import net.shadowfacts.phycon.api.packet.Packet
 import net.shadowfacts.phycon.init.PhyBlockEntities
 import net.shadowfacts.phycon.network.DeviceBlockEntity
+import net.shadowfacts.phycon.network.FaceDeviceBlock
 import net.shadowfacts.phycon.network.component.ItemStackPacketHandler
 import net.shadowfacts.phycon.network.component.NetworkStackProvider
 import net.shadowfacts.phycon.network.component.NetworkStackReceiver
@@ -25,7 +26,7 @@ class InterfaceBlockEntity: DeviceBlockEntity(PhyBlockEntities.INTERFACE),
 	NetworkStackReceiver {
 
 	private val facing: Direction
-		get() = cachedState[InterfaceBlock.FACING]
+		get() = cachedState[FaceDeviceBlock.FACING]
 
 	// todo: should this be a weak ref?
 	private var inventory: GroupedItemInv? = null

src/main/kotlin/net/shadowfacts/phycon/network/block/terminal/TerminalBlockEntity.kt

@@ -56,7 +56,6 @@ class TerminalBlockEntity: DeviceBlockEntity(PhyBlockEntities.TERMINAL),
 
 	private var observers = 0
 	val cachedNetItems = ItemStackCollections.intMap()
-	var cachedSortedNetItems = listOf<ItemStack>()
 
 	var netItemObserver: WeakReference<NetItemObserver>? = null
 
@@ -86,14 +85,12 @@ class TerminalBlockEntity: DeviceBlockEntity(PhyBlockEntities.TERMINAL),
 
 	private fun handleReadInventory(packet: ReadInventoryPacket) {
 		inventoryCache[packet.source] = packet.inventory
-		updateNetItems()
+		updateAndSync()
-		sync()
 	}
 
 	private fun handleDeviceRemoved(packet: DeviceRemovedPacket) {
 		inventoryCache.remove(packet.source)
-		updateNetItems()
+		updateAndSync()
-		sync()
 	}
 
 	private fun handleStackLocation(packet: StackLocationPacket) {
@@ -113,12 +110,17 @@ class TerminalBlockEntity: DeviceBlockEntity(PhyBlockEntities.TERMINAL),
 
 		// this happens outside the normal update loop because by receiving the item stack packet
 		// we "know" how much the count in the source inventory has changed
-		updateNetItems()
+		updateAndSync()
-		sync()
 
 		return remaining
 	}
 
+	private fun updateAndSync() {
+		updateNetItems()
+		sync()
+		netItemObserver?.get()?.netItemsChanged()
+	}
+
 	private fun updateNetItems() {
 		cachedNetItems.clear()
 		for (inventory in inventoryCache.values) {
@@ -127,12 +129,6 @@ class TerminalBlockEntity: DeviceBlockEntity(PhyBlockEntities.TERMINAL),
 				cachedNetItems.mergeInt(stack, amount) { a, b -> a + b }
 			}
 		}
-		// todo: is the map necessary or is just the sorted list enough?
-		cachedSortedNetItems = cachedNetItems.object2IntEntrySet().sortedByDescending { it.intValue }.map {
-			val stack = it.key.copy()
-			stack.count = it.intValue
-			stack
-		}
 	}
 
 	private fun beginInsertions() {
@@ -175,21 +171,15 @@ class TerminalBlockEntity: DeviceBlockEntity(PhyBlockEntities.TERMINAL),
 				finishTimedOutPendingInsertions()
 			}
 
-			if (observers > 0) {
+			if (observers > 0 && !world!!.isClient) {
-				if (world!!.isClient) {
+				updateAndSync()
-					println(cachedNetItems)
-				} else {
-					updateNetItems()
-					sync()
-				}
 			}
 		}
 	}
 
 	fun onActivate(player: PlayerEntity) {
 		if (!world!!.isClient) {
-			updateNetItems()
+			updateAndSync()
-			sync()
 
 			inventoryCache.clear()
 			sendPacket(RequestInventoryPacket(ipAddress))
@@ -238,8 +228,7 @@ class TerminalBlockEntity: DeviceBlockEntity(PhyBlockEntities.TERMINAL),
 		internalBuffer.setStack(insertion.bufferSlot, remaining)
 
 		// as with extracting, we "know" the new amounts and so can update instantly without actually sending out packets
-		updateNetItems()
+		updateAndSync()
-		sync()
 
 		return remaining
 	}
@@ -263,31 +252,11 @@ class TerminalBlockEntity: DeviceBlockEntity(PhyBlockEntities.TERMINAL),
 
 	override fun toClientTag(tag: CompoundTag): CompoundTag {
 		tag.put("InternalBuffer", internalBuffer.toTag())
-		val list = ListTag()
-		tag.put("CachedNetItems", list)
-		for ((stack, amount) in cachedNetItems) {
-			val entryTag = stack.toTag(CompoundTag())
-			entryTag.putInt("NetAmount", amount)
-			list.add(entryTag)
-		}
 		return tag
 	}
 
 	override fun fromClientTag(tag: CompoundTag) {
 		internalBuffer.fromTag(tag.getCompound("InternalBuffer"))
-		val list = tag.getList("CachedNetItems", 10)
-		cachedNetItems.clear()
-		for (entryTag in list) {
-			val stack = ItemStack.fromTag(entryTag as CompoundTag)
-			val netAmount = entryTag.getInt("NetAmount")
-			cachedNetItems[stack] = netAmount
-		}
-		netItemObserver?.get()?.netItemsChanged()
-		cachedSortedNetItems = cachedNetItems.object2IntEntrySet().sortedByDescending { it.intValue }.map {
-			val stack = it.key.copy()
-			stack.count = it.intValue
-			stack
-		}
 	}
 
 	interface NetItemObserver {

src/main/kotlin/net/shadowfacts/phycon/network/block/terminal/TerminalScreen.kt

@@ -5,6 +5,7 @@ import net.minecraft.client.MinecraftClient
 import net.minecraft.client.gui.DrawableHelper
 import net.minecraft.client.gui.screen.ingame.HandledScreen
 import net.minecraft.client.gui.widget.AbstractButtonWidget
+import net.minecraft.client.gui.widget.AbstractPressableButtonWidget
 import net.minecraft.client.gui.widget.ButtonWidget
 import net.minecraft.client.gui.widget.TextFieldWidget
 import net.minecraft.client.util.math.MatrixStack
@@ -16,10 +17,14 @@ import net.minecraft.text.LiteralText
 import net.minecraft.text.Text
 import net.minecraft.util.Identifier
 import net.shadowfacts.phycon.PhysicalConnectivity
+import net.shadowfacts.phycon.networking.C2STerminalRequestItem
+import net.shadowfacts.phycon.networking.C2STerminalUpdateDisplayedItems
+import net.shadowfacts.phycon.util.SortMode
 import org.lwjgl.glfw.GLFW
 import java.lang.NumberFormatException
 import kotlin.math.ceil
 import kotlin.math.floor
+import kotlin.math.min
 
 /**
  * @author shadowfacts
@@ -32,6 +37,7 @@ class TerminalScreen(handler: TerminalScreenHandler, playerInv: PlayerInventory,
 	}
 
 	private lateinit var searchBox: TextFieldWidget
+	private lateinit var sortButton: SortButton
 	private lateinit var amountBox: TextFieldWidget
 	private var dialogStack = ItemStack.EMPTY
 	private var showingAmountDialog = false
@@ -73,7 +79,12 @@ class TerminalScreen(handler: TerminalScreenHandler, playerInv: PlayerInventory,
 		searchBox.isVisible = true
 		searchBox.setSelected(true)
 		searchBox.setEditableColor(0xffffff)
-		children.add(searchBox)
+		addChild(searchBox)
+
+		sortButton = SortButton(x + 256, y + 0, handler.sortMode, {
+			requestUpdatedItems()
+		}, ::renderTooltip)
+		addButton(sortButton)
 
 		val dialogMinX = width / 2 - dialogWidth / 2
 		val dialogMinY = height / 2 - dialogHeight / 2
@@ -130,6 +141,13 @@ class TerminalScreen(handler: TerminalScreenHandler, playerInv: PlayerInventory,
 			doDialogRequest()
 		}
 		dialogChildren.add(request)
+
+		requestUpdatedItems()
+	}
+
+	private fun requestUpdatedItems() {
+		val player = MinecraftClient.getInstance().player!!
+		player.networkHandler.sendPacket(C2STerminalUpdateDisplayedItems(handler.terminal, searchBox.text, sortButton.mode))
 	}
 
 	override fun tick() {
@@ -213,12 +231,24 @@ class TerminalScreen(handler: TerminalScreenHandler, playerInv: PlayerInventory,
 		// don't unfocus the search box on mouse click
 		searchBox.setSelected(true)
 
-		if (type == SlotActionType.PICKUP && clickData == 0 && slot != null && handler.isNetworkSlot(slot.id) && !slot.stack.isEmpty) {
+		if (slot != null && !slot.stack.isEmpty && handler.isNetworkSlot(slot.id)) {
-			dialogStack = slot.stack
+			val stack = slot.stack
+
+			if (type == SlotActionType.QUICK_MOVE) {
+				// shift click, request full stack
+				requestItem(stack, min(stack.count, stack.maxCount))
+			} else if (type == SlotActionType.PICKUP) {
+				if (clickData == 1) {
+					// right click, request half stack
+					requestItem(stack, ceil(min(stack.count, stack.maxCount) / 2f).toInt())
+				} else {
+					dialogStack = stack
 					showingAmountDialog = true
 					searchBox.setSelected(false)
 				}
 			}
+		}
+	}
 
 	override fun mouseClicked(mouseX: Double, mouseY: Double, button: Int): Boolean {
 		if (showingAmountDialog) {
@@ -271,7 +301,7 @@ class TerminalScreen(handler: TerminalScreenHandler, playerInv: PlayerInventory,
 			val oldText = searchBox.text
 			if (searchBox.charTyped(c, i)) {
 				if (searchBox.text != oldText) {
-					search()
+					requestUpdatedItems()
 				}
 				return true
 			}
@@ -299,7 +329,7 @@ class TerminalScreen(handler: TerminalScreenHandler, playerInv: PlayerInventory,
 			val oldText = searchBox.text
 			if (searchBox.keyPressed(key, j, k)) {
 				if (searchBox.text != oldText) {
-					search()
+					requestUpdatedItems()
 				}
 				return true
 			}
@@ -311,13 +341,15 @@ class TerminalScreen(handler: TerminalScreenHandler, playerInv: PlayerInventory,
 		}
 	}
 
-	private fun search() {
-		screenHandler.search(searchBox.text)
-	}
-
 	private fun doDialogRequest() {
 		showingAmountDialog = false
-		handler.requestItem(client!!.player!!, dialogStack, amountBox.intValue)
+		requestItem(dialogStack, amountBox.intValue)
+	}
+
+	private fun requestItem(stack: ItemStack, amount: Int) {
+		val netHandler = MinecraftClient.getInstance().player!!.networkHandler
+		val packet = C2STerminalRequestItem(handler.terminal, stack, amount)
+		netHandler.sendPacket(packet)
 	}
 
 	private var TextFieldWidget.intValue: Int
@@ -343,4 +375,58 @@ class TerminalScreen(handler: TerminalScreenHandler, playerInv: PlayerInventory,
 		}
 	}
 
+	class SortButton(
+		x: Int,
+		y: Int,
+		var mode: SortMode,
+		val onChange: (SortMode) -> Unit,
+		val doRenderTooltip: (MatrixStack, Text, Int, Int) -> Unit
+	): AbstractPressableButtonWidget(x, y, 20, 20, LiteralText("")) {
+		override fun onPress() {}
+
+		override fun mouseClicked(mouseX: Double, mouseY: Double, button: Int): Boolean {
+			if ((button == 0 || button == 1) && clicked(mouseX, mouseY)) {
+				val newVal = if (button == 0) mode.next else mode.prev
+				mode = newVal
+				onChange(mode)
+
+				playDownSound(MinecraftClient.getInstance().soundManager)
+				return true
+			}
+			return false
+		}
+
+		override fun renderButton(matrixStack: MatrixStack, mouseX: Int, mouseY: Int, delta: Float) {
+			val client = MinecraftClient.getInstance()
+			RenderSystem.color4f(1f, 1f, 1f, 1f)
+			RenderSystem.enableBlend()
+			RenderSystem.defaultBlendFunc()
+			RenderSystem.enableDepthTest()
+
+			client.textureManager.bindTexture(WIDGETS_LOCATION)
+			val k = getYImage(isHovered)
+			drawTexture(matrixStack, x, y, 0, 46 + k * 20, width / 2, height)
+			drawTexture(matrixStack, x + width / 2, y, 200 - width / 2, 46 + k * 20, width / 2, height)
+
+			client.textureManager.bindTexture(BACKGROUND)
+			val u: Int = when (mode) {
+				SortMode.COUNT_HIGH_FIRST -> 0
+				SortMode.COUNT_LOW_FIRST -> 16
+				SortMode.ALPHABETICAL -> 32
+			}
+			drawTexture(matrixStack, x + 2, y + 2, u, 230, 16, 16)
+
+			if (isHovered) {
+				renderToolTip(matrixStack, mouseX, mouseY)
+			}
+		}
+
+		override fun renderToolTip(matrixStack: MatrixStack, mouseX: Int, mouseY: Int) {
+			val text = LiteralText("")
+			text.append("Sort by: ")
+			text.append(mode.tooltip)
+			doRenderTooltip(matrixStack, text, mouseX, mouseY)
+		}
+	}
+
 }

src/main/kotlin/net/shadowfacts/phycon/network/block/terminal/TerminalScreenHandler.kt

@@ -8,12 +8,15 @@ import net.minecraft.entity.player.PlayerInventory
 import net.minecraft.item.ItemStack
 import net.minecraft.network.PacketByteBuf
 import net.minecraft.screen.ScreenHandler
+import net.minecraft.server.network.ServerPlayerEntity
 import net.minecraft.util.Identifier
 import net.minecraft.util.registry.Registry
 import net.shadowfacts.phycon.PhysicalConnectivity
 import net.shadowfacts.phycon.init.PhyBlocks
 import net.shadowfacts.phycon.init.PhyScreens
 import net.shadowfacts.phycon.networking.C2STerminalRequestItem
+import net.shadowfacts.phycon.networking.S2CTerminalUpdateDisplayedItems
+import net.shadowfacts.phycon.util.SortMode
 import java.lang.ref.WeakReference
 import kotlin.math.ceil
 import kotlin.math.min
@@ -21,7 +24,7 @@ import kotlin.math.min
 /**
  * @author shadowfacts
  */
-class TerminalScreenHandler(syncId: Int, playerInv: PlayerInventory, val terminal: TerminalBlockEntity): ScreenHandler(PhyScreens.TERMINAL_SCREEN_HANDLER, syncId),
+class TerminalScreenHandler(syncId: Int, val playerInv: PlayerInventory, val terminal: TerminalBlockEntity): ScreenHandler(PhyScreens.TERMINAL_SCREEN_HANDLER, syncId),
 	TerminalBlockEntity.NetItemObserver {
 
 	companion object {
@@ -30,6 +33,19 @@ class TerminalScreenHandler(syncId: Int, playerInv: PlayerInventory, val termina
 
 	private val fakeInv = FakeInventory(this)
 	private var searchQuery: String = ""
+	var sortMode = SortMode.COUNT_HIGH_FIRST
+		private set
+	private var itemEntries = listOf<Entry>()
+		set(value) {
+			field = value
+			if (terminal.world!!.isClient) {
+				itemsForDisplay = value.map {
+					val stack = it.stack.copy()
+					stack.count = it.amount
+					stack
+				}
+			}
+		}
 	var itemsForDisplay = listOf<ItemStack>()
 		private set
 
@@ -37,8 +53,10 @@ class TerminalScreenHandler(syncId: Int, playerInv: PlayerInventory, val termina
 			this(syncId, playerInv, PhyBlocks.TERMINAL.getBlockEntity(playerInv.player.world, buf.readBlockPos())!!)
 
 	init {
+		if (!terminal.world!!.isClient) {
 			terminal.netItemObserver = WeakReference(this)
 			netItemsChanged()
+		}
 
 		// network
 		for (y in 0 until 6) {
@@ -67,7 +85,10 @@ class TerminalScreenHandler(syncId: Int, playerInv: PlayerInventory, val termina
 	}
 
 	override fun netItemsChanged() {
-		itemsForDisplay = terminal.cachedNetItems.object2IntEntrySet().filter {
+		val player = playerInv.player
+		assert(player is ServerPlayerEntity)
+
+		val filtered = terminal.cachedNetItems.object2IntEntrySet().filter {
 			if (searchQuery.isBlank()) return@filter true
 			if (searchQuery.startsWith('@')) {
 				val unprefixed = searchQuery.drop(1)
@@ -77,20 +98,34 @@ class TerminalScreenHandler(syncId: Int, playerInv: PlayerInventory, val termina
 				}
 			}
 			it.key.name.string.contains(searchQuery, true)
-		}.sortedByDescending {
-			it.intValue
-		}.map {
-			val stack = it.key.copy()
-			stack.count = it.intValue
-			stack
-		}
 		}
 
-	fun search(query: String) {
+		val sorted =
-		searchQuery = query
+			when (sortMode) {
+				SortMode.COUNT_HIGH_FIRST -> filtered.sortedByDescending { it.intValue }
+				SortMode.COUNT_LOW_FIRST -> filtered.sortedBy { it.intValue }
+				SortMode.ALPHABETICAL -> filtered.sortedBy { it.key.name.string }
+			}
+
+		itemEntries = sorted.map { Entry(it.key, it.intValue) }
+
+		(player as ServerPlayerEntity).networkHandler.sendPacket(S2CTerminalUpdateDisplayedItems(terminal, itemEntries, searchQuery, sortMode))
+	}
+
+	fun sendUpdatedItemsToClient(player: ServerPlayerEntity, query: String, sortMode: SortMode) {
+		this.searchQuery = query
+		this.sortMode = sortMode
 		netItemsChanged()
 	}
 
+	fun receivedUpdatedItemsFromServer(entries: List<Entry>, query: String, sortMode: SortMode) {
+		assert(playerInv.player.world.isClient)
+
+		this.searchQuery = query
+		this.sortMode = sortMode
+		itemEntries = entries
+	}
+
 	override fun canUse(player: PlayerEntity): Boolean {
 		return true
 	}
@@ -102,28 +137,7 @@ class TerminalScreenHandler(syncId: Int, playerInv: PlayerInventory, val termina
 	}
 
 	override fun onSlotClick(slotId: Int, clickData: Int, actionType: SlotActionType, player: PlayerEntity): ItemStack {
-		if (isNetworkSlot(slotId)) {
+		if (isBufferSlot(slotId)) {
-			// the slot clicked was one of the network stacks
-			if (actionType == SlotActionType.QUICK_MOVE) {
-				val stack = slots[slotId].stack
-				if (!stack.isEmpty && player.world.isClient) {
-					requestItem(player, stack, min(stack.count, stack.maxCount))
-
-				}
-			} else if (actionType == SlotActionType.PICKUP && clickData == 1) {
-				if (clickData == 1) {
-					// right click, request half stack
-					val stack = slots[slotId].stack
-					if (!stack.isEmpty && player.world.isClient) {
-						requestItem(player, stack, ceil(min(stack.count, stack.maxCount) / 2f).toInt())
-					}
-				} else {
-					// todo: left click, show amount dialog
-				}
-			}
-			return ItemStack.EMPTY
-		} else if (isBufferSlot(slotId)) {
-			// internal buffer
 			// todo: why does this think it's quick_craft sometimes?
 			if ((actionType == SlotActionType.PICKUP || actionType == SlotActionType.QUICK_CRAFT) && !player.inventory.cursorStack.isEmpty) {
 				// placing cursor stack into buffer
@@ -134,13 +148,6 @@ class TerminalScreenHandler(syncId: Int, playerInv: PlayerInventory, val termina
 		return super.onSlotClick(slotId, clickData, actionType, player)
 	}
 
-	fun requestItem(player: PlayerEntity, stack: ItemStack, amount: Int) {
-		if (!player.world.isClient) return
-		val handler = (player as ClientPlayerEntity).networkHandler
-		val packet = C2STerminalRequestItem(terminal, stack, amount)
-		handler.sendPacket(packet)
-	}
-
 	override fun transferSlot(player: PlayerEntity, slotId: Int): ItemStack {
 		if (isNetworkSlot(slotId)) {
 			return ItemStack.EMPTY;
@@ -154,7 +161,8 @@ class TerminalScreenHandler(syncId: Int, playerInv: PlayerInventory, val termina
 		val result = slot.stack.copy()
 
 		if (isBufferSlot(slotId)) {
-			if (!insertItem(slot.stack, playerSlotsStart, playerSlotsEnd, false)) {
+			// last boolean param is fromLast
+			if (!insertItem(slot.stack, playerSlotsStart, playerSlotsEnd, true)) {
 				return ItemStack.EMPTY
 			}
 			if (slot.stack.isEmpty) {
@@ -204,4 +212,6 @@ class TerminalScreenHandler(syncId: Int, playerInv: PlayerInventory, val termina
 	fun isNetworkSlot(id: Int) = id in 0 until bufferSlotsStart
 	fun isBufferSlot(id: Int) = id in bufferSlotsStart until playerSlotsStart
 	fun isPlayerSlot(id: Int) = id >= playerSlotsStart
+
+	data class Entry(val stack: ItemStack, val amount: Int)
 }

src/main/kotlin/net/shadowfacts/phycon/networking/C2STerminalUpdateDisplayedItems.kt

@@ -0,0 +1,50 @@
+package net.shadowfacts.phycon.networking
+
+import net.fabricmc.fabric.api.client.networking.v1.ClientPlayNetworking
+import net.fabricmc.fabric.api.networking.v1.PacketByteBufs
+import net.fabricmc.fabric.api.networking.v1.PacketSender
+import net.minecraft.network.Packet
+import net.minecraft.network.PacketByteBuf
+import net.minecraft.server.MinecraftServer
+import net.minecraft.server.network.ServerPlayNetworkHandler
+import net.minecraft.server.network.ServerPlayerEntity
+import net.minecraft.util.Identifier
+import net.shadowfacts.phycon.PhysicalConnectivity
+import net.shadowfacts.phycon.network.block.terminal.TerminalBlockEntity
+import net.shadowfacts.phycon.network.block.terminal.TerminalScreenHandler
+import net.shadowfacts.phycon.util.SortMode
+
+/**
+ * @author shadowfacts
+ */
+object C2STerminalUpdateDisplayedItems: ServerReceiver {
+
+	override val CHANNEL = Identifier(PhysicalConnectivity.MODID, "terminal_update_displayed")
+
+	operator fun invoke(terminal: TerminalBlockEntity, query: String, sortMode: SortMode): Packet<*> {
+		val buf = PacketByteBufs.create()
+
+		buf.writeIdentifier(terminal.world!!.registryKey.value)
+		buf.writeBlockPos(terminal.pos)
+
+		buf.writeString(query)
+		buf.writeVarInt(sortMode.ordinal)
+
+		return ClientPlayNetworking.createC2SPacket(CHANNEL, buf)
+	}
+
+	override fun receive(server: MinecraftServer, player: ServerPlayerEntity, handler: ServerPlayNetworkHandler, buf: PacketByteBuf, responseSender: PacketSender) {
+		val dimID = buf.readIdentifier()
+		val pos = buf.readBlockPos()
+		val query = buf.readString()
+		val sortMode = SortMode.values()[buf.readVarInt()]
+
+		server.execute {
+			if (player.world.registryKey.value != dimID) return@execute
+			val screenHandler = player.currentScreenHandler
+			if (screenHandler !is TerminalScreenHandler) return@execute
+			if (screenHandler.terminal.pos != pos) return@execute
+			screenHandler.sendUpdatedItemsToClient(player, query, sortMode)
+		}
+	}
+}

src/main/kotlin/net/shadowfacts/phycon/networking/ClientReceiver.kt

@@ -0,0 +1,11 @@
+package net.shadowfacts.phycon.networking
+
+import net.fabricmc.fabric.api.client.networking.v1.ClientPlayNetworking
+import net.minecraft.util.Identifier
+
+/**
+ * @author shadowfacts
+ */
+interface ClientReceiver: ClientPlayNetworking.PlayChannelHandler {
+	val CHANNEL: Identifier
+}

src/main/kotlin/net/shadowfacts/phycon/networking/S2CTerminalUpdateDisplayedItems.kt

@@ -0,0 +1,57 @@
+package net.shadowfacts.phycon.networking
+
+import net.fabricmc.fabric.api.networking.v1.PacketByteBufs
+import net.fabricmc.fabric.api.networking.v1.PacketSender
+import net.fabricmc.fabric.api.networking.v1.ServerPlayNetworking
+import net.minecraft.client.MinecraftClient
+import net.minecraft.client.network.ClientPlayNetworkHandler
+import net.minecraft.network.Packet
+import net.minecraft.network.PacketByteBuf
+import net.shadowfacts.phycon.network.block.terminal.TerminalBlockEntity
+import net.shadowfacts.phycon.network.block.terminal.TerminalScreenHandler
+import net.shadowfacts.phycon.util.SortMode
+
+/**
+ * @author shadowfacts
+ */
+object S2CTerminalUpdateDisplayedItems: ClientReceiver {
+	override val CHANNEL = C2STerminalUpdateDisplayedItems.CHANNEL
+
+	operator fun invoke(terminal: TerminalBlockEntity, entries: List<TerminalScreenHandler.Entry>, query: String, sortMode: SortMode): Packet<*> {
+		val buf = PacketByteBufs.create()
+
+		buf.writeIdentifier(terminal.world!!.registryKey.value)
+		buf.writeBlockPos(terminal.pos)
+
+		buf.writeVarInt(entries.size)
+		for (e in entries) {
+			buf.writeItemStack(e.stack)
+			buf.writeVarInt(e.amount)
+		}
+
+		buf.writeString(query)
+		buf.writeVarInt(sortMode.ordinal)
+
+		return ServerPlayNetworking.createS2CPacket(CHANNEL, buf)
+	}
+
+	override fun receive(client: MinecraftClient, handler: ClientPlayNetworkHandler, buf: PacketByteBuf, responseSender: PacketSender) {
+		val dimID = buf.readIdentifier()
+		val pos = buf.readBlockPos()
+		val entryCount = buf.readVarInt()
+		val entries = ArrayList<TerminalScreenHandler.Entry>(entryCount)
+		for (i in 0 until entryCount) {
+			entries.add(TerminalScreenHandler.Entry(buf.readItemStack(), buf.readVarInt()))
+		}
+		val query = buf.readString()
+		val sortMode = SortMode.values()[buf.readVarInt()]
+
+		client.execute {
+			if (client.player!!.world.registryKey.value != dimID) return@execute
+			val screenHandler = client.player!!.currentScreenHandler
+			if (screenHandler !is TerminalScreenHandler) return@execute
+			if (screenHandler.terminal.pos != pos) return@execute
+			screenHandler.receivedUpdatedItemsFromServer(entries, query, sortMode)
+		}
+	}
+}

src/main/kotlin/net/shadowfacts/phycon/util/SortMode.kt

@@ -0,0 +1,27 @@
+package net.shadowfacts.phycon.util
+
+import net.minecraft.text.LiteralText
+import net.minecraft.text.Text
+
+/**
+ * @author shadowfacts
+ */
+enum class SortMode {
+	COUNT_HIGH_FIRST,
+	COUNT_LOW_FIRST,
+	ALPHABETICAL;
+
+	val prev: SortMode
+		get() = values()[(ordinal - 1 + values().size) % values().size]
+
+	val next: SortMode
+		get() = values()[(ordinal + 1) % values().size]
+
+	val tooltip: Text
+		get() = when (this) {
+			COUNT_HIGH_FIRST -> LiteralText("Count, highest first")
+			COUNT_LOW_FIRST -> LiteralText("Count, lowest first")
+			ALPHABETICAL -> LiteralText("Name")
+		}
+
+}

src/main/resources/assets/phycon/blockstates/network_interface.json

@@ -140,7 +140,6 @@
 		},
 
 		{
-
 			"when": {"cable_connection": "down", "facing": "east"},
 			"apply": { "model": "phycon:block/interface_cable_corner", "x": 90, "y": 270 }
 		},