Refactor source layout

Introduce compat source sets and move all kotlin sources to the main directory

[no changelog]

17 files changed, 1739 insertions, 0 deletions

diff --git a/src/main/kotlin/features/inventory/CraftingOverlay.kt b/src/main/kotlin/features/inventory/CraftingOverlay.kt
new file mode 100644
index 0000000..031ef78
--- /dev/null
+++ b/src/main/kotlin/features/inventory/CraftingOverlay.kt
@@ -0,0 +1,66 @@
+
+
+package moe.nea.firmament.features.inventory
+
+import net.minecraft.client.gui.screen.ingame.GenericContainerScreen
+import net.minecraft.item.ItemStack
+import net.minecraft.util.Formatting
+import moe.nea.firmament.annotations.Subscribe
+import moe.nea.firmament.events.SlotRenderEvents
+import moe.nea.firmament.features.FirmamentFeature
+import moe.nea.firmament.rei.FirmamentReiPlugin.Companion.asItemEntry
+import moe.nea.firmament.rei.SBItemEntryDefinition
+import moe.nea.firmament.rei.recipes.SBCraftingRecipe
+import moe.nea.firmament.util.MC
+
+object CraftingOverlay : FirmamentFeature {
+
+    private var screen: GenericContainerScreen? = null
+    private var recipe: SBCraftingRecipe? = null
+    private val craftingOverlayIndices = listOf(
+        10, 11, 12,
+        19, 20, 21,
+        28, 29, 30,
+    )
+
+
+    fun setOverlay(screen: GenericContainerScreen, recipe: SBCraftingRecipe) {
+        this.screen = screen
+        this.recipe = recipe
+    }
+
+    override val identifier: String
+        get() = "crafting-overlay"
+
+    @Subscribe
+    fun onSlotRender(event: SlotRenderEvents.After) {
+        val slot = event.slot
+        val recipe = this.recipe ?: return
+        if (slot.inventory != screen?.screenHandler?.inventory) return
+        val recipeIndex = craftingOverlayIndices.indexOf(slot.index)
+        if (recipeIndex < 0) return
+        val expectedItem = recipe.neuRecipe.inputs[recipeIndex]
+        val actualStack = slot.stack ?: ItemStack.EMPTY!!
+        val actualEntry = SBItemEntryDefinition.getEntry(actualStack).value
+        if ((actualEntry.skyblockId.neuItem != expectedItem.itemId || actualEntry.getStackSize() < expectedItem.amount) && expectedItem.amount.toInt() != 0) {
+            event.context.fill(
+                event.slot.x,
+                event.slot.y,
+                event.slot.x + 16,
+                event.slot.y + 16,
+                0x80FF0000.toInt()
+            )
+        }
+        if (!slot.hasStack()) {
+            val itemStack = SBItemEntryDefinition.getEntry(expectedItem).asItemEntry().value
+            event.context.drawItem(itemStack, event.slot.x, event.slot.y)
+            event.context.drawItemInSlot(
+                MC.font,
+                itemStack,
+                event.slot.x,
+                event.slot.y,
+                "${Formatting.RED}${expectedItem.amount.toInt()}"
+            )
+        }
+    }
+}
diff --git a/src/main/kotlin/features/inventory/ItemRarityCosmetics.kt b/src/main/kotlin/features/inventory/ItemRarityCosmetics.kt
new file mode 100644
index 0000000..566a813
--- /dev/null
+++ b/src/main/kotlin/features/inventory/ItemRarityCosmetics.kt
@@ -0,0 +1,85 @@
+
+
+package moe.nea.firmament.features.inventory
+
+import java.awt.Color
+import net.minecraft.client.gui.DrawContext
+import net.minecraft.item.ItemStack
+import net.minecraft.util.Formatting
+import net.minecraft.util.Identifier
+import moe.nea.firmament.annotations.Subscribe
+import moe.nea.firmament.events.HotbarItemRenderEvent
+import moe.nea.firmament.events.SlotRenderEvents
+import moe.nea.firmament.features.FirmamentFeature
+import moe.nea.firmament.gui.config.ManagedConfig
+import moe.nea.firmament.util.MC
+import moe.nea.firmament.util.item.loreAccordingToNbt
+import moe.nea.firmament.util.lastNotNullOfOrNull
+import moe.nea.firmament.util.memoize
+import moe.nea.firmament.util.memoizeIdentity
+import moe.nea.firmament.util.unformattedString
+
+object ItemRarityCosmetics : FirmamentFeature {
+    override val identifier: String
+        get() = "item-rarity-cosmetics"
+
+    object TConfig : ManagedConfig(identifier) {
+        val showItemRarityBackground by toggle("background") { false }
+        val showItemRarityInHotbar by toggle("background-hotbar") { false }
+    }
+
+    override val config: ManagedConfig
+        get() = TConfig
+
+    private val rarityToColor = mapOf(
+        "UNCOMMON" to Formatting.GREEN,
+        "COMMON" to Formatting.WHITE,
+        "RARE" to Formatting.DARK_BLUE,
+        "EPIC" to Formatting.DARK_PURPLE,
+        "LEGENDARY" to Formatting.GOLD,
+        "LEGENJERRY" to Formatting.GOLD,
+        "MYTHIC" to Formatting.LIGHT_PURPLE,
+        "DIVINE" to Formatting.BLUE,
+        "SPECIAL" to Formatting.DARK_RED,
+        "SUPREME" to Formatting.DARK_RED,
+    ).mapValues {
+        val c = Color(it.value.colorValue!!)
+        Triple(c.red / 255F, c.green / 255F, c.blue / 255F)
+    }
+
+    private fun getSkyblockRarity0(itemStack: ItemStack): Triple<Float, Float, Float>? {
+        return itemStack.loreAccordingToNbt.lastNotNullOfOrNull {
+            val entry = it.unformattedString
+            rarityToColor.entries.find { (k, v) -> k in entry }?.value
+        }
+    }
+
+    val getSkyblockRarity = ::getSkyblockRarity0.memoizeIdentity(100)
+
+
+    fun drawItemStackRarity(drawContext: DrawContext, x: Int, y: Int, item: ItemStack) {
+        val (r, g, b) = getSkyblockRarity(item) ?: return
+        drawContext.drawSprite(
+            x, y,
+            0,
+            16, 16,
+            MC.guiAtlasManager.getSprite(Identifier.of("firmament:item_rarity_background")),
+            r, g, b, 1F
+        )
+    }
+
+
+    @Subscribe
+    fun onRenderSlot(it: SlotRenderEvents.Before) {
+        if (!TConfig.showItemRarityBackground) return
+        val stack = it.slot.stack ?: return
+        drawItemStackRarity(it.context, it.slot.x, it.slot.y, stack)
+    }
+
+    @Subscribe
+    fun onRenderHotbarItem(it: HotbarItemRenderEvent) {
+        if (!TConfig.showItemRarityInHotbar) return
+        val stack = it.item
+        drawItemStackRarity(it.context, it.x, it.y, stack)
+    }
+}
diff --git a/src/main/kotlin/features/inventory/PriceData.kt b/src/main/kotlin/features/inventory/PriceData.kt
new file mode 100644
index 0000000..c61f8e8
--- /dev/null
+++ b/src/main/kotlin/features/inventory/PriceData.kt
@@ -0,0 +1,51 @@
+
+
+package moe.nea.firmament.features.inventory
+
+import net.minecraft.text.Text
+import moe.nea.firmament.annotations.Subscribe
+import moe.nea.firmament.events.ItemTooltipEvent
+import moe.nea.firmament.features.FirmamentFeature
+import moe.nea.firmament.gui.config.ManagedConfig
+import moe.nea.firmament.repo.HypixelStaticData
+import moe.nea.firmament.util.FirmFormatters
+import moe.nea.firmament.util.skyBlockId
+
+object PriceData : FirmamentFeature {
+    override val identifier: String
+        get() = "price-data"
+
+    object TConfig : ManagedConfig(identifier) {
+        val tooltipEnabled by toggle("enable-always") { true }
+        val enableKeybinding by keyBindingWithDefaultUnbound("enable-keybind")
+    }
+
+    override val config get() = TConfig
+
+    @Subscribe
+    fun onItemTooltip(it: ItemTooltipEvent) {
+        if (!TConfig.tooltipEnabled && !TConfig.enableKeybinding.isPressed()) {
+            return
+        }
+        val sbId = it.stack.skyBlockId
+        val bazaarData = HypixelStaticData.bazaarData[sbId]
+        val lowestBin = HypixelStaticData.lowestBin[sbId]
+        if (bazaarData != null) {
+            it.lines.add(Text.literal(""))
+            it.lines.add(
+                Text.stringifiedTranslatable("firmament.tooltip.bazaar.sell-order",
+                                             FirmFormatters.formatCommas(bazaarData.quickStatus.sellPrice, 1))
+            )
+            it.lines.add(
+                Text.stringifiedTranslatable("firmament.tooltip.bazaar.buy-order",
+                                             FirmFormatters.formatCommas(bazaarData.quickStatus.buyPrice, 1))
+            )
+        } else if (lowestBin != null) {
+            it.lines.add(Text.literal(""))
+            it.lines.add(
+                Text.stringifiedTranslatable("firmament.tooltip.ah.lowestbin",
+                                             FirmFormatters.formatCommas(lowestBin, 1))
+            )
+        }
+    }
+}
diff --git a/src/main/kotlin/features/inventory/SaveCursorPosition.kt b/src/main/kotlin/features/inventory/SaveCursorPosition.kt
new file mode 100644
index 0000000..1c55753
--- /dev/null
+++ b/src/main/kotlin/features/inventory/SaveCursorPosition.kt
@@ -0,0 +1,66 @@
+
+
+package moe.nea.firmament.features.inventory
+
+import kotlin.math.absoluteValue
+import kotlin.time.Duration.Companion.milliseconds
+import net.minecraft.client.util.InputUtil
+import moe.nea.firmament.features.FirmamentFeature
+import moe.nea.firmament.gui.config.ManagedConfig
+import moe.nea.firmament.util.MC
+import moe.nea.firmament.util.TimeMark
+import moe.nea.firmament.util.assertNotNullOr
+
+object SaveCursorPosition : FirmamentFeature {
+    override val identifier: String
+        get() = "save-cursor-position"
+
+    object TConfig : ManagedConfig(identifier) {
+        val enable by toggle("enable") { true }
+        val tolerance by duration("tolerance", 10.milliseconds, 5000.milliseconds) { 500.milliseconds }
+    }
+
+    override val config: TConfig
+        get() = TConfig
+
+    var savedPositionedP1: Pair<Double, Double>? = null
+    var savedPosition: SavedPosition? = null
+
+    data class SavedPosition(
+        val middle: Pair<Double, Double>,
+        val cursor: Pair<Double, Double>,
+        val savedAt: TimeMark = TimeMark.now()
+    )
+
+    @JvmStatic
+    fun saveCursorOriginal(positionedX: Double, positionedY: Double) {
+        savedPositionedP1 = Pair(positionedX, positionedY)
+    }
+
+    @JvmStatic
+    fun loadCursor(middleX: Double, middleY: Double): Pair<Double, Double>? {
+        if (!TConfig.enable) return null
+        val lastPosition = savedPosition?.takeIf { it.savedAt.passedTime() < TConfig.tolerance }
+        savedPosition = null
+        if (lastPosition != null &&
+            (lastPosition.middle.first - middleX).absoluteValue < 1 &&
+            (lastPosition.middle.second - middleY).absoluteValue < 1
+        ) {
+            InputUtil.setCursorParameters(
+                MC.window.handle,
+                InputUtil.GLFW_CURSOR_NORMAL,
+                lastPosition.cursor.first,
+                lastPosition.cursor.second
+            )
+            return lastPosition.cursor
+        }
+        return null
+    }
+
+    @JvmStatic
+    fun saveCursorMiddle(middleX: Double, middleY: Double) {
+        if (!TConfig.enable) return
+        val cursorPos = assertNotNullOr(savedPositionedP1) { return }
+        savedPosition = SavedPosition(Pair(middleX, middleY), cursorPos)
+    }
+}
diff --git a/src/main/kotlin/features/inventory/SlotLocking.kt b/src/main/kotlin/features/inventory/SlotLocking.kt
new file mode 100644
index 0000000..a50d8fb
--- /dev/null
+++ b/src/main/kotlin/features/inventory/SlotLocking.kt
@@ -0,0 +1,203 @@
+
+
+@file:UseSerializers(DashlessUUIDSerializer::class)
+
+package moe.nea.firmament.features.inventory
+
+import com.mojang.blaze3d.systems.RenderSystem
+import java.util.UUID
+import org.lwjgl.glfw.GLFW
+import kotlinx.serialization.Serializable
+import kotlinx.serialization.UseSerializers
+import kotlinx.serialization.serializer
+import net.minecraft.client.gui.screen.ingame.HandledScreen
+import net.minecraft.entity.player.PlayerInventory
+import net.minecraft.screen.GenericContainerScreenHandler
+import net.minecraft.screen.slot.SlotActionType
+import net.minecraft.util.Identifier
+import moe.nea.firmament.annotations.Subscribe
+import moe.nea.firmament.events.HandledScreenKeyPressedEvent
+import moe.nea.firmament.events.IsSlotProtectedEvent
+import moe.nea.firmament.events.SlotRenderEvents
+import moe.nea.firmament.features.FirmamentFeature
+import moe.nea.firmament.gui.config.ManagedConfig
+import moe.nea.firmament.keybindings.SavedKeyBinding
+import moe.nea.firmament.mixins.accessor.AccessorHandledScreen
+import moe.nea.firmament.util.CommonSoundEffects
+import moe.nea.firmament.util.MC
+import moe.nea.firmament.util.SBData
+import moe.nea.firmament.util.SkyBlockIsland
+import moe.nea.firmament.util.data.ProfileSpecificDataHolder
+import moe.nea.firmament.util.item.displayNameAccordingToNbt
+import moe.nea.firmament.util.item.loreAccordingToNbt
+import moe.nea.firmament.util.json.DashlessUUIDSerializer
+import moe.nea.firmament.util.skyblockUUID
+import moe.nea.firmament.util.unformattedString
+
+object SlotLocking : FirmamentFeature {
+    override val identifier: String
+        get() = "slot-locking"
+
+    @Serializable
+    data class Data(
+        val lockedSlots: MutableSet<Int> = mutableSetOf(),
+        val lockedSlotsRift: MutableSet<Int> = mutableSetOf(),
+
+        val lockedUUIDs: MutableSet<UUID> = mutableSetOf(),
+    )
+
+    object TConfig : ManagedConfig(identifier) {
+        val lockSlot by keyBinding("lock") { GLFW.GLFW_KEY_L }
+        val lockUUID by keyBindingWithOutDefaultModifiers("lock-uuid") {
+            SavedKeyBinding(GLFW.GLFW_KEY_L, shift = true)
+        }
+    }
+
+    override val config: TConfig
+        get() = TConfig
+
+    object DConfig : ProfileSpecificDataHolder<Data>(serializer(), "locked-slots", ::Data)
+
+    val lockedUUIDs get() = DConfig.data?.lockedUUIDs
+
+    val lockedSlots
+        get() = when (SBData.skyblockLocation) {
+            SkyBlockIsland.RIFT -> DConfig.data?.lockedSlotsRift
+            null -> null
+            else -> DConfig.data?.lockedSlots
+        }
+
+    fun isSalvageScreen(screen: HandledScreen<*>?): Boolean {
+        if (screen == null) return false
+        return screen.title.unformattedString.contains("Salvage Item")
+    }
+
+    fun isTradeScreen(screen: HandledScreen<*>?): Boolean {
+        if (screen == null) return false
+        val handler = screen.screenHandler as? GenericContainerScreenHandler ?: return false
+        if (handler.inventory.size() < 9) return false
+        val middlePane = handler.inventory.getStack(handler.inventory.size() - 5)
+        if (middlePane == null) return false
+        return middlePane.displayNameAccordingToNbt?.unformattedString == "⇦ Your stuff"
+    }
+
+    fun isNpcShop(screen: HandledScreen<*>?): Boolean {
+        if (screen == null) return false
+        val handler = screen.screenHandler as? GenericContainerScreenHandler ?: return false
+        if (handler.inventory.size() < 9) return false
+        val sellItem = handler.inventory.getStack(handler.inventory.size() - 5)
+        if (sellItem == null) return false
+        if (sellItem.displayNameAccordingToNbt?.unformattedString == "Sell Item") return true
+        val lore = sellItem.loreAccordingToNbt
+        return (lore.lastOrNull() ?: return false).unformattedString == "Click to buyback!"
+    }
+
+    @Subscribe
+    fun onSalvageProtect(event: IsSlotProtectedEvent) {
+        if (event.slot == null) return
+        if (!event.slot.hasStack()) return
+        if (event.slot.stack.displayNameAccordingToNbt?.unformattedString != "Salvage Items") return
+        val inv = event.slot.inventory
+        var anyBlocked = false
+        for (i in 0 until event.slot.index) {
+            val stack = inv.getStack(i)
+            if (IsSlotProtectedEvent.shouldBlockInteraction(null, SlotActionType.THROW, stack))
+                anyBlocked = true
+        }
+        if (anyBlocked) {
+            event.protectSilent()
+        }
+    }
+
+    @Subscribe
+    fun onProtectUuidItems(event: IsSlotProtectedEvent) {
+        val doesNotDeleteItem = event.actionType == SlotActionType.SWAP
+            || event.actionType == SlotActionType.PICKUP
+            || event.actionType == SlotActionType.QUICK_MOVE
+            || event.actionType == SlotActionType.QUICK_CRAFT
+            || event.actionType == SlotActionType.CLONE
+            || event.actionType == SlotActionType.PICKUP_ALL
+        val isSellOrTradeScreen =
+            isNpcShop(MC.handledScreen) || isTradeScreen(MC.handledScreen) || isSalvageScreen(MC.handledScreen)
+        if ((!isSellOrTradeScreen || event.slot?.inventory !is PlayerInventory)
+            && doesNotDeleteItem
+        ) return
+        val stack = event.itemStack ?: return
+        val uuid = stack.skyblockUUID ?: return
+        if (uuid in (lockedUUIDs ?: return)) {
+            event.protect()
+        }
+    }
+
+    @Subscribe
+    fun onProtectSlot(it: IsSlotProtectedEvent) {
+        if (it.slot != null && it.slot.inventory is PlayerInventory && it.slot.index in (lockedSlots ?: setOf())) {
+            it.protect()
+        }
+    }
+
+    @Subscribe
+    fun onLockUUID(it: HandledScreenKeyPressedEvent) {
+        if (!it.matches(TConfig.lockUUID)) return
+        val inventory = MC.handledScreen ?: return
+        inventory as AccessorHandledScreen
+
+        val slot = inventory.focusedSlot_Firmament ?: return
+        val stack = slot.stack ?: return
+        val uuid = stack.skyblockUUID ?: return
+        val lockedUUIDs = lockedUUIDs ?: return
+        if (uuid in lockedUUIDs) {
+            lockedUUIDs.remove(uuid)
+        } else {
+            lockedUUIDs.add(uuid)
+        }
+        DConfig.markDirty()
+        CommonSoundEffects.playSuccess()
+        it.cancel()
+    }
+
+    @Subscribe
+    fun onLockSlot(it: HandledScreenKeyPressedEvent) {
+        if (!it.matches(TConfig.lockSlot)) return
+        val inventory = MC.handledScreen ?: return
+        inventory as AccessorHandledScreen
+
+        val slot = inventory.focusedSlot_Firmament ?: return
+        val lockedSlots = lockedSlots ?: return
+        if (slot.inventory is PlayerInventory) {
+            if (slot.index in lockedSlots) {
+                lockedSlots.remove(slot.index)
+            } else {
+                lockedSlots.add(slot.index)
+            }
+            DConfig.markDirty()
+            CommonSoundEffects.playSuccess()
+        }
+    }
+
+    @Subscribe
+    fun onRenderSlotOverlay(it: SlotRenderEvents.After) {
+        val isSlotLocked = it.slot.inventory is PlayerInventory && it.slot.index in (lockedSlots ?: setOf())
+        val isUUIDLocked = (it.slot.stack?.skyblockUUID) in (lockedUUIDs ?: setOf())
+        if (isSlotLocked || isUUIDLocked) {
+            RenderSystem.disableDepthTest()
+            it.context.drawSprite(
+                it.slot.x, it.slot.y, 0,
+                16, 16,
+                MC.guiAtlasManager.getSprite(
+                    when {
+                        isSlotLocked ->
+                            (Identifier.of("firmament:slot_locked"))
+
+                        isUUIDLocked ->
+                            (Identifier.of("firmament:uuid_locked"))
+
+                        else ->
+                            error("unreachable")
+                    }
+                )
+            )
+            RenderSystem.enableDepthTest()
+        }
+    }
+}
diff --git a/src/main/kotlin/features/inventory/buttons/InventoryButton.kt b/src/main/kotlin/features/inventory/buttons/InventoryButton.kt
new file mode 100644
index 0000000..539edf2
--- /dev/null
+++ b/src/main/kotlin/features/inventory/buttons/InventoryButton.kt
@@ -0,0 +1,85 @@
+
+
+package moe.nea.firmament.features.inventory.buttons
+
+import com.mojang.brigadier.StringReader
+import me.shedaniel.math.Dimension
+import me.shedaniel.math.Point
+import me.shedaniel.math.Rectangle
+import kotlinx.serialization.Serializable
+import net.minecraft.client.gui.DrawContext
+import net.minecraft.command.CommandRegistryAccess
+import net.minecraft.command.argument.ItemStackArgumentType
+import net.minecraft.item.ItemStack
+import net.minecraft.resource.featuretoggle.FeatureFlags
+import net.minecraft.util.Identifier
+import moe.nea.firmament.repo.ItemCache.asItemStack
+import moe.nea.firmament.repo.RepoManager
+import moe.nea.firmament.util.MC
+import moe.nea.firmament.util.SkyblockId
+import moe.nea.firmament.util.memoize
+
+@Serializable
+data class InventoryButton(
+    var x: Int,
+    var y: Int,
+    var anchorRight: Boolean,
+    var anchorBottom: Boolean,
+    var icon: String? = "",
+    var command: String? = "",
+) {
+    companion object {
+        val itemStackParser by lazy {
+            ItemStackArgumentType.itemStack(CommandRegistryAccess.of(MC.defaultRegistries,
+                                                                     FeatureFlags.VANILLA_FEATURES))
+        }
+        val dimensions = Dimension(18, 18)
+        val getItemForName = ::getItemForName0.memoize(1024)
+        fun getItemForName0(icon: String): ItemStack {
+            val repoItem = RepoManager.getNEUItem(SkyblockId(icon))
+            var itemStack = repoItem.asItemStack(idHint = SkyblockId(icon))
+            if (repoItem == null) {
+                val giveSyntaxItem = if (icon.startsWith("/give") || icon.startsWith("give"))
+                    icon.split(" ", limit = 3).getOrNull(2) ?: icon
+                else icon
+                val componentItem =
+                    runCatching {
+                        itemStackParser.parse(StringReader(giveSyntaxItem)).createStack(1, false)
+                    }.getOrNull()
+                if (componentItem != null)
+                    itemStack = componentItem
+            }
+            return itemStack
+        }
+    }
+
+    fun render(context: DrawContext) {
+        context.drawSprite(
+            0,
+            0,
+            0,
+            dimensions.width,
+            dimensions.height,
+            MC.guiAtlasManager.getSprite(Identifier.of("firmament:inventory_button_background"))
+        )
+        context.drawItem(getItem(), 1, 1)
+    }
+
+    fun isValid() = !icon.isNullOrBlank() && !command.isNullOrBlank()
+
+    fun getPosition(guiRect: Rectangle): Point {
+        return Point(
+            (if (anchorRight) guiRect.maxX else guiRect.minX) + x,
+            (if (anchorBottom) guiRect.maxY else guiRect.minY) + y,
+        )
+    }
+
+    fun getBounds(guiRect: Rectangle): Rectangle {
+        return Rectangle(getPosition(guiRect), dimensions)
+    }
+
+    fun getItem(): ItemStack {
+        return getItemForName(icon ?: "")
+    }
+
+}
diff --git a/src/main/kotlin/features/inventory/buttons/InventoryButtonEditor.kt b/src/main/kotlin/features/inventory/buttons/InventoryButtonEditor.kt
new file mode 100644
index 0000000..c57563e
--- /dev/null
+++ b/src/main/kotlin/features/inventory/buttons/InventoryButtonEditor.kt
@@ -0,0 +1,184 @@
+
+
+package moe.nea.firmament.features.inventory.buttons
+
+import io.github.notenoughupdates.moulconfig.common.IItemStack
+import io.github.notenoughupdates.moulconfig.platform.ModernItemStack
+import io.github.notenoughupdates.moulconfig.xml.Bind
+import me.shedaniel.math.Point
+import me.shedaniel.math.Rectangle
+import org.lwjgl.glfw.GLFW
+import net.minecraft.client.gui.DrawContext
+import net.minecraft.client.gui.widget.ButtonWidget
+import net.minecraft.client.util.InputUtil
+import net.minecraft.text.Text
+import net.minecraft.util.math.MathHelper
+import net.minecraft.util.math.Vec2f
+import moe.nea.firmament.util.ClipboardUtils
+import moe.nea.firmament.util.FragmentGuiScreen
+import moe.nea.firmament.util.MC
+import moe.nea.firmament.util.MoulConfigUtils
+
+class InventoryButtonEditor(
+    val lastGuiRect: Rectangle,
+) : FragmentGuiScreen() {
+    inner class Editor(val originalButton: InventoryButton) {
+        @field:Bind
+        var command: String = originalButton.command ?: ""
+
+        @field:Bind
+        var icon: String = originalButton.icon ?: ""
+
+        @Bind
+        fun getItemIcon(): IItemStack {
+            save()
+            return ModernItemStack.of(InventoryButton.getItemForName(icon))
+        }
+
+        @Bind
+        fun delete() {
+            buttons.removeIf { it === originalButton }
+            popup = null
+        }
+
+        fun save() {
+            originalButton.icon = icon
+            originalButton.command = command
+        }
+    }
+
+    var buttons: MutableList<InventoryButton> =
+        InventoryButtons.DConfig.data.buttons.map { it.copy() }.toMutableList()
+
+    override fun close() {
+        InventoryButtons.DConfig.data.buttons = buttons
+        InventoryButtons.DConfig.markDirty()
+        super.close()
+    }
+
+    override fun init() {
+        super.init()
+        addDrawableChild(
+            ButtonWidget.builder(Text.translatable("firmament.inventory-buttons.load-preset")) {
+                val t = ClipboardUtils.getTextContents()
+                val newButtons = InventoryButtonTemplates.loadTemplate(t)
+                if (newButtons != null)
+                    buttons = newButtons.toMutableList()
+            }
+                .position(lastGuiRect.minX + 10, lastGuiRect.minY + 35)
+                .width(lastGuiRect.width - 20)
+                .build()
+        )
+        addDrawableChild(
+            ButtonWidget.builder(Text.translatable("firmament.inventory-buttons.save-preset")) {
+                ClipboardUtils.setTextContent(InventoryButtonTemplates.saveTemplate(buttons))
+            }
+                .position(lastGuiRect.minX + 10, lastGuiRect.minY + 60)
+                .width(lastGuiRect.width - 20)
+                .build()
+        )
+    }
+
+    override fun render(context: DrawContext, mouseX: Int, mouseY: Int, delta: Float) {
+        super.render(context, mouseX, mouseY, delta)
+        context.matrices.push()
+        context.matrices.translate(0f, 0f, -10f)
+        context.fill(lastGuiRect.minX, lastGuiRect.minY, lastGuiRect.maxX, lastGuiRect.maxY, -1)
+        context.setShaderColor(1f, 1f, 1f, 1f)
+        context.matrices.pop()
+        for (button in buttons) {
+            val buttonPosition = button.getBounds(lastGuiRect)
+            context.matrices.push()
+            context.matrices.translate(buttonPosition.minX.toFloat(), buttonPosition.minY.toFloat(), 0F)
+            button.render(context)
+            context.matrices.pop()
+        }
+    }
+
+    override fun keyPressed(keyCode: Int, scanCode: Int, modifiers: Int): Boolean {
+        if (super.keyPressed(keyCode, scanCode, modifiers)) return true
+        if (keyCode == GLFW.GLFW_KEY_ESCAPE) {
+            close()
+            return true
+        }
+        return false
+    }
+
+    override fun mouseReleased(mouseX: Double, mouseY: Double, button: Int): Boolean {
+        if (super.mouseReleased(mouseX, mouseY, button)) return true
+        val clickedButton = buttons.firstOrNull { it.getBounds(lastGuiRect).contains(Point(mouseX, mouseY)) }
+        if (clickedButton != null && !justPerformedAClickAction) {
+            createPopup(MoulConfigUtils.loadGui("button_editor_fragment", Editor(clickedButton)), Point(mouseX, mouseY))
+            return true
+        }
+        justPerformedAClickAction = false
+        lastDraggedButton = null
+        return false
+    }
+
+    override fun mouseDragged(mouseX: Double, mouseY: Double, button: Int, deltaX: Double, deltaY: Double): Boolean {
+        if (super.mouseDragged(mouseX, mouseY, button, deltaX, deltaY)) return true
+
+        if (initialDragMousePosition.distanceSquared(Vec2f(mouseX.toFloat(), mouseY.toFloat())) >= 4 * 4) {
+            initialDragMousePosition = Vec2f(-10F, -10F)
+            lastDraggedButton?.let { dragging ->
+                justPerformedAClickAction = true
+                val (anchorRight, anchorBottom, offsetX, offsetY) = getCoordsForMouse(mouseX.toInt(), mouseY.toInt())
+                    ?: return true
+                dragging.x = offsetX
+                dragging.y = offsetY
+                dragging.anchorRight = anchorRight
+                dragging.anchorBottom = anchorBottom
+            }
+        }
+        return false
+    }
+
+    var lastDraggedButton: InventoryButton? = null
+    var justPerformedAClickAction = false
+    var initialDragMousePosition = Vec2f(-10F, -10F)
+
+    data class AnchoredCoords(
+        val anchorRight: Boolean,
+        val anchorBottom: Boolean,
+        val offsetX: Int,
+        val offsetY: Int,
+    )
+
+    fun getCoordsForMouse(mx: Int, my: Int): AnchoredCoords? {
+        if (lastGuiRect.contains(mx, my) || lastGuiRect.contains(
+                Point(
+                    mx + InventoryButton.dimensions.width,
+                    my + InventoryButton.dimensions.height,
+                )
+            )
+        ) return null
+
+        val anchorRight = mx > lastGuiRect.maxX
+        val anchorBottom = my > lastGuiRect.maxY
+        var offsetX = mx - if (anchorRight) lastGuiRect.maxX else lastGuiRect.minX
+        var offsetY = my - if (anchorBottom) lastGuiRect.maxY else lastGuiRect.minY
+        if (InputUtil.isKeyPressed(MC.window.handle, InputUtil.GLFW_KEY_LEFT_SHIFT)) {
+            offsetX = MathHelper.floor(offsetX / 20F) * 20
+            offsetY = MathHelper.floor(offsetY / 20F) * 20
+        }
+        return AnchoredCoords(anchorRight, anchorBottom, offsetX, offsetY)
+    }
+
+    override fun mouseClicked(mouseX: Double, mouseY: Double, button: Int): Boolean {
+        if (super.mouseClicked(mouseX, mouseY, button)) return true
+        val clickedButton = buttons.firstOrNull { it.getBounds(lastGuiRect).contains(Point(mouseX, mouseY)) }
+        if (clickedButton != null) {
+            lastDraggedButton = clickedButton
+            initialDragMousePosition = Vec2f(mouseX.toFloat(), mouseY.toFloat())
+            return true
+        }
+        val mx = mouseX.toInt()
+        val my = mouseY.toInt()
+        val (anchorRight, anchorBottom, offsetX, offsetY) = getCoordsForMouse(mx, my) ?: return true
+        buttons.add(InventoryButton(offsetX, offsetY, anchorRight, anchorBottom, null, null))
+        justPerformedAClickAction = true
+        return true
+    }
+
+}
diff --git a/src/main/kotlin/features/inventory/buttons/InventoryButtonTemplates.kt b/src/main/kotlin/features/inventory/buttons/InventoryButtonTemplates.kt
new file mode 100644
index 0000000..99b544b
--- /dev/null
+++ b/src/main/kotlin/features/inventory/buttons/InventoryButtonTemplates.kt
@@ -0,0 +1,35 @@
+
+
+package moe.nea.firmament.features.inventory.buttons
+
+import kotlinx.serialization.decodeFromString
+import kotlinx.serialization.encodeToString
+import net.minecraft.text.Text
+import moe.nea.firmament.Firmament
+import moe.nea.firmament.util.MC
+import moe.nea.firmament.util.TemplateUtil
+
+object InventoryButtonTemplates {
+
+    val legacyPrefix = "NEUBUTTONS/"
+    val modernPrefix = "MAYBEONEDAYIWILLHAVEMYOWNFORMAT"
+
+    fun loadTemplate(t: String): List<InventoryButton>? {
+        val buttons = TemplateUtil.maybeDecodeTemplate<List<String>>(legacyPrefix, t) ?: return null
+        return buttons.mapNotNull {
+            try {
+                Firmament.json.decodeFromString<InventoryButton>(it).also {
+                    if (it.icon?.startsWith("extra:") == true || it.command?.any { it.isLowerCase() } == true) {
+                        MC.sendChat(Text.translatable("firmament.inventory-buttons.import-failed"))
+                    }
+                }
+            } catch (e: Exception) {
+                null
+            }
+        }
+    }
+
+    fun saveTemplate(buttons: List<InventoryButton>): String {
+        return TemplateUtil.encodeTemplate(legacyPrefix, buttons.map { Firmament.json.encodeToString(it) })
+    }
+}
diff --git a/src/main/kotlin/features/inventory/buttons/InventoryButtons.kt b/src/main/kotlin/features/inventory/buttons/InventoryButtons.kt
new file mode 100644
index 0000000..fa90d21
--- /dev/null
+++ b/src/main/kotlin/features/inventory/buttons/InventoryButtons.kt
@@ -0,0 +1,88 @@
+
+
+package moe.nea.firmament.features.inventory.buttons
+
+import me.shedaniel.math.Rectangle
+import kotlinx.serialization.Serializable
+import kotlinx.serialization.serializer
+import moe.nea.firmament.annotations.Subscribe
+import moe.nea.firmament.events.HandledScreenClickEvent
+import moe.nea.firmament.events.HandledScreenForegroundEvent
+import moe.nea.firmament.events.HandledScreenPushREIEvent
+import moe.nea.firmament.features.FirmamentFeature
+import moe.nea.firmament.gui.config.ManagedConfig
+import moe.nea.firmament.util.MC
+import moe.nea.firmament.util.ScreenUtil
+import moe.nea.firmament.util.data.DataHolder
+import moe.nea.firmament.util.getRectangle
+
+object InventoryButtons : FirmamentFeature {
+    override val identifier: String
+        get() = "inventory-buttons"
+
+    object TConfig : ManagedConfig(identifier) {
+        val _openEditor by button("open-editor") {
+            openEditor()
+        }
+    }
+
+    object DConfig : DataHolder<Data>(serializer(), identifier, ::Data)
+
+    @Serializable
+    data class Data(
+        var buttons: MutableList<InventoryButton> = mutableListOf()
+    )
+
+
+    override val config: ManagedConfig
+        get() = TConfig
+
+    fun getValidButtons() = DConfig.data.buttons.asSequence().filter { it.isValid() }
+
+    @Subscribe
+    fun onRectangles(it: HandledScreenPushREIEvent) {
+        val bounds = it.screen.getRectangle()
+        for (button in getValidButtons()) {
+            val buttonBounds = button.getBounds(bounds)
+            it.block(buttonBounds)
+        }
+    }
+
+    @Subscribe
+    fun onClickScreen(it: HandledScreenClickEvent) {
+        val bounds = it.screen.getRectangle()
+        for (button in getValidButtons()) {
+            val buttonBounds = button.getBounds(bounds)
+            if (buttonBounds.contains(it.mouseX, it.mouseY)) {
+                MC.sendCommand(button.command!! /* non null invariant covered by getValidButtons */)
+                break
+            }
+        }
+    }
+
+    @Subscribe
+    fun onRenderForeground(it: HandledScreenForegroundEvent) {
+        val bounds = it.screen.getRectangle()
+        for (button in getValidButtons()) {
+            val buttonBounds = button.getBounds(bounds)
+            it.context.matrices.push()
+            it.context.matrices.translate(buttonBounds.minX.toFloat(), buttonBounds.minY.toFloat(), 0F)
+            button.render(it.context)
+            it.context.matrices.pop()
+        }
+        lastRectangle = bounds
+    }
+
+    var lastRectangle: Rectangle? = null
+    fun openEditor() {
+        ScreenUtil.setScreenLater(
+            InventoryButtonEditor(
+                lastRectangle ?: Rectangle(
+                    MC.window.scaledWidth / 2 - 100,
+                    MC.window.scaledHeight / 2 - 100,
+                    200, 200,
+                )
+            )
+        )
+    }
+}
diff --git a/src/main/kotlin/features/inventory/storageoverlay/StorageBackingHandle.kt b/src/main/kotlin/features/inventory/storageoverlay/StorageBackingHandle.kt
new file mode 100644
index 0000000..1015578
--- /dev/null
+++ b/src/main/kotlin/features/inventory/storageoverlay/StorageBackingHandle.kt
@@ -0,0 +1,53 @@
+
+
+package moe.nea.firmament.features.inventory.storageoverlay
+
+import net.minecraft.client.gui.screen.Screen
+import net.minecraft.client.gui.screen.ingame.GenericContainerScreen
+import net.minecraft.screen.GenericContainerScreenHandler
+import moe.nea.firmament.util.ifMatches
+import moe.nea.firmament.util.unformattedString
+
+/**
+ * A handle representing the state of the "server side" screens.
+ */
+sealed interface StorageBackingHandle {
+
+    sealed interface HasBackingScreen {
+        val handler: GenericContainerScreenHandler
+    }
+
+    /**
+     * The main storage overview is open. Clicking on a slot will open that page. This page is accessible via `/storage`
+     */
+    data class Overview(override val handler: GenericContainerScreenHandler) : StorageBackingHandle, HasBackingScreen
+
+    /**
+     * An individual storage page is open. This may be a backpack or an enderchest page. This page is accessible via
+     * the [Overview] or via `/ec <index + 1>` for enderchest pages.
+     */
+    data class Page(override val handler: GenericContainerScreenHandler, val storagePageSlot: StoragePageSlot) :
+        StorageBackingHandle, HasBackingScreen
+
+    companion object {
+        private val enderChestName = "^Ender Chest \\(([1-9])/[1-9]\\)$".toRegex()
+        private val backPackName = "^.+Backpack \\(Slot #([0-9]+)\\)$".toRegex()
+
+        /**
+         * Parse a screen into a [StorageBackingHandle]. If this returns null it means that the screen is not
+         * representable as a [StorageBackingHandle], meaning another screen is open, for example the enderchest icon
+         * selection screen.
+         */
+        fun fromScreen(screen: Screen?): StorageBackingHandle? {
+            if (screen == null) return null
+            if (screen !is GenericContainerScreen) return null
+            val title = screen.title.unformattedString
+            if (title == "Storage") return Overview(screen.screenHandler)
+            return title.ifMatches(enderChestName) {
+                Page(screen.screenHandler, StoragePageSlot.ofEnderChestPage(it.groupValues[1].toInt()))
+            } ?: title.ifMatches(backPackName) {
+                Page(screen.screenHandler, StoragePageSlot.ofBackPackPage(it.groupValues[1].toInt()))
+            }
+        }
+    }
+}
diff --git a/src/main/kotlin/features/inventory/storageoverlay/StorageData.kt b/src/main/kotlin/features/inventory/storageoverlay/StorageData.kt
new file mode 100644
index 0000000..7555c56
--- /dev/null
+++ b/src/main/kotlin/features/inventory/storageoverlay/StorageData.kt
@@ -0,0 +1,21 @@
+
+
+@file:UseSerializers(SortedMapSerializer::class)
+package moe.nea.firmament.features.inventory.storageoverlay
+
+import java.util.SortedMap
+import kotlinx.serialization.Serializable
+import kotlinx.serialization.UseSerializers
+import moe.nea.firmament.util.SortedMapSerializer
+
+@Serializable
+data class StorageData(
+    val storageInventories: SortedMap<StoragePageSlot, StorageInventory> = sortedMapOf()
+) {
+    @Serializable
+    data class StorageInventory(
+        var title: String,
+        val slot: StoragePageSlot,
+        var inventory: VirtualInventory?,
+    )
+}
diff --git a/src/main/kotlin/features/inventory/storageoverlay/StorageOverlay.kt b/src/main/kotlin/features/inventory/storageoverlay/StorageOverlay.kt
new file mode 100644
index 0000000..b615c73
--- /dev/null
+++ b/src/main/kotlin/features/inventory/storageoverlay/StorageOverlay.kt
@@ -0,0 +1,154 @@
+
+
+package moe.nea.firmament.features.inventory.storageoverlay
+
+import java.util.SortedMap
+import kotlinx.serialization.serializer
+import net.minecraft.client.gui.screen.ingame.GenericContainerScreen
+import net.minecraft.client.gui.screen.ingame.HandledScreen
+import net.minecraft.entity.player.PlayerInventory
+import net.minecraft.item.Items
+import net.minecraft.network.packet.c2s.play.CloseHandledScreenC2SPacket
+import moe.nea.firmament.annotations.Subscribe
+import moe.nea.firmament.events.ScreenChangeEvent
+import moe.nea.firmament.events.SlotClickEvent
+import moe.nea.firmament.events.TickEvent
+import moe.nea.firmament.features.FirmamentFeature
+import moe.nea.firmament.gui.config.ManagedConfig
+import moe.nea.firmament.util.MC
+import moe.nea.firmament.util.customgui.customGui
+import moe.nea.firmament.util.data.ProfileSpecificDataHolder
+
+object StorageOverlay : FirmamentFeature {
+
+
+    object Data : ProfileSpecificDataHolder<StorageData>(serializer(), "storage-data", ::StorageData)
+
+    override val identifier: String
+        get() = "storage-overlay"
+
+    object TConfig : ManagedConfig(identifier) {
+        val alwaysReplace by toggle("always-replace") { true }
+        val columns by integer("rows", 1, 10) { 3 }
+        val scrollSpeed by integer("scroll-speed", 1, 50) { 10 }
+        val inverseScroll by toggle("inverse-scroll") { false }
+        val padding by integer("padding", 1, 20) { 5 }
+        val margin by integer("margin", 1, 60) { 20 }
+    }
+
+    fun adjustScrollSpeed(amount: Double): Double {
+        return amount * TConfig.scrollSpeed * (if (TConfig.inverseScroll) 1 else -1)
+    }
+
+    override val config: TConfig
+        get() = TConfig
+
+    var lastStorageOverlay: StorageOverviewScreen? = null
+    var skipNextStorageOverlayBackflip = false
+    var currentHandler: StorageBackingHandle? = null
+
+    @Subscribe
+    fun onTick(event: TickEvent) {
+        rememberContent(currentHandler ?: return)
+    }
+
+    @Subscribe
+    fun onClick(event: SlotClickEvent) {
+        if (lastStorageOverlay != null && event.slot.inventory !is PlayerInventory && event.slot.index < 9
+            && event.stack.item != Items.BLACK_STAINED_GLASS_PANE
+        ) {
+            skipNextStorageOverlayBackflip = true
+        }
+    }
+
+    @Subscribe
+    fun onScreenChange(it: ScreenChangeEvent) {
+        if (it.old == null && it.new == null) return
+        val storageOverlayScreen = it.old as? StorageOverlayScreen
+            ?: ((it.old as? HandledScreen<*>)?.customGui as? StorageOverlayCustom)?.overview
+        var storageOverviewScreen = it.old as? StorageOverviewScreen
+        val screen = it.new as? GenericContainerScreen
+        val oldHandler = currentHandler
+        currentHandler = StorageBackingHandle.fromScreen(screen)
+        rememberContent(currentHandler)
+        if (storageOverviewScreen != null && oldHandler is StorageBackingHandle.HasBackingScreen) {
+            val player = MC.player
+            assert(player != null)
+            player?.networkHandler?.sendPacket(CloseHandledScreenC2SPacket(oldHandler.handler.syncId))
+            if (player?.currentScreenHandler === oldHandler.handler) {
+                player.currentScreenHandler = player.playerScreenHandler
+            }
+        }
+        storageOverviewScreen = storageOverviewScreen ?: lastStorageOverlay
+        if (it.new == null && storageOverlayScreen != null && !storageOverlayScreen.isExiting) {
+            it.overrideScreen = storageOverlayScreen
+            return
+        }
+        if (storageOverviewScreen != null
+            && !storageOverviewScreen.isClosing
+            && (currentHandler is StorageBackingHandle.Overview || currentHandler == null)
+        ) {
+            if (skipNextStorageOverlayBackflip) {
+                skipNextStorageOverlayBackflip = false
+            } else {
+                it.overrideScreen = storageOverviewScreen
+                lastStorageOverlay = null
+            }
+            return
+        }
+        screen ?: return
+        screen.customGui = StorageOverlayCustom(
+            currentHandler ?: return,
+            screen,
+            storageOverlayScreen ?: (if (TConfig.alwaysReplace) StorageOverlayScreen() else return))
+    }
+
+    fun rememberContent(handler: StorageBackingHandle?) {
+        handler ?: return
+        // TODO: Make all of these functions work on deltas / updates instead of the entire contents
+        val data = Data.data?.storageInventories ?: return
+        when (handler) {
+            is StorageBackingHandle.Overview -> rememberStorageOverview(handler, data)
+            is StorageBackingHandle.Page -> rememberPage(handler, data)
+        }
+        Data.markDirty()
+    }
+
+    private fun rememberStorageOverview(
+        handler: StorageBackingHandle.Overview,
+        data: SortedMap<StoragePageSlot, StorageData.StorageInventory>
+    ) {
+        for ((index, stack) in handler.handler.stacks.withIndex()) {
+            // Ignore unloaded item stacks
+            if (stack.isEmpty) continue
+            val slot = StoragePageSlot.fromOverviewSlotIndex(index) ?: continue
+            val isEmpty = stack.item in StorageOverviewScreen.emptyStorageSlotItems
+            if (slot in data) {
+                if (isEmpty)
+                    data.remove(slot)
+                continue
+            }
+            if (!isEmpty) {
+                data[slot] = StorageData.StorageInventory(slot.defaultName(), slot, null)
+            }
+        }
+    }
+
+    private fun rememberPage(
+        handler: StorageBackingHandle.Page,
+        data: SortedMap<StoragePageSlot, StorageData.StorageInventory>
+    ) {
+        // TODO: FIXME: FIXME NOW: Definitely don't copy all of this every tick into persistence
+        val newStacks =
+            VirtualInventory(handler.handler.stacks.take(handler.handler.rows * 9).drop(9).map { it.copy() })
+        data.compute(handler.storagePageSlot) { slot, existingInventory ->
+            (existingInventory ?: StorageData.StorageInventory(
+                slot.defaultName(),
+                slot,
+                null
+            )).also {
+                it.inventory = newStacks
+            }
+        }
+    }
+}
diff --git a/src/main/kotlin/features/inventory/storageoverlay/StorageOverlayCustom.kt b/src/main/kotlin/features/inventory/storageoverlay/StorageOverlayCustom.kt
new file mode 100644
index 0000000..d0d9114
--- /dev/null
+++ b/src/main/kotlin/features/inventory/storageoverlay/StorageOverlayCustom.kt
@@ -0,0 +1,98 @@
+
+package moe.nea.firmament.features.inventory.storageoverlay
+
+import me.shedaniel.math.Point
+import me.shedaniel.math.Rectangle
+import net.minecraft.client.MinecraftClient
+import net.minecraft.client.gui.DrawContext
+import net.minecraft.client.gui.screen.ingame.GenericContainerScreen
+import net.minecraft.entity.player.PlayerInventory
+import net.minecraft.screen.slot.Slot
+import moe.nea.firmament.mixins.accessor.AccessorHandledScreen
+import moe.nea.firmament.util.customgui.CustomGui
+
+class StorageOverlayCustom(
+    val handler: StorageBackingHandle,
+    val screen: GenericContainerScreen,
+    val overview: StorageOverlayScreen,
+) : CustomGui() {
+    override fun onVoluntaryExit(): Boolean {
+        overview.isExiting = true
+        return super.onVoluntaryExit()
+    }
+
+    override fun getBounds(): List<Rectangle> {
+        return overview.getBounds()
+    }
+
+    override fun afterSlotRender(context: DrawContext, slot: Slot) {
+        if (slot.inventory !is PlayerInventory)
+            context.disableScissor()
+    }
+
+    override fun beforeSlotRender(context: DrawContext, slot: Slot) {
+        if (slot.inventory !is PlayerInventory)
+            overview.createScissors(context)
+    }
+
+    override fun onInit() {
+        overview.init(MinecraftClient.getInstance(), screen.width, screen.height)
+        overview.init()
+        screen as AccessorHandledScreen
+        screen.x_Firmament = overview.measurements.x
+        screen.y_Firmament = overview.measurements.y
+        screen.backgroundWidth_Firmament = overview.measurements.totalWidth
+        screen.backgroundHeight_Firmament = overview.measurements.totalHeight
+    }
+
+    override fun isPointOverSlot(slot: Slot, xOffset: Int, yOffset: Int, pointX: Double, pointY: Double): Boolean {
+        if (!super.isPointOverSlot(slot, xOffset, yOffset, pointX, pointY))
+            return false
+        if (slot.inventory !is PlayerInventory) {
+            if (!overview.getScrollPanelInner().contains(pointX, pointY))
+                return false
+        }
+        return true
+    }
+
+    override fun shouldDrawForeground(): Boolean {
+        return false
+    }
+
+    override fun mouseClick(mouseX: Double, mouseY: Double, button: Int): Boolean {
+        return overview.mouseClicked(mouseX, mouseY, button, (handler as? StorageBackingHandle.Page)?.storagePageSlot)
+    }
+
+    override fun render(drawContext: DrawContext, delta: Float, mouseX: Int, mouseY: Int) {
+        overview.drawBackgrounds(drawContext)
+        overview.drawPages(drawContext,
+                           mouseX,
+                           mouseY,
+                           delta,
+                           (handler as? StorageBackingHandle.Page)?.storagePageSlot,
+                           screen.screenHandler.slots.take(screen.screenHandler.rows * 9).drop(9),
+                           Point((screen as AccessorHandledScreen).x_Firmament, screen.y_Firmament))
+        overview.drawScrollBar(drawContext)
+    }
+
+    override fun moveSlot(slot: Slot) {
+        val index = slot.index
+        if (index in 0..<36) {
+            val (x, y) = overview.getPlayerInventorySlotPosition(index)
+            slot.x = x - (screen as AccessorHandledScreen).x_Firmament
+            slot.y = y - screen.y_Firmament
+        } else {
+            slot.x = -100000
+            slot.y = -100000
+        }
+    }
+
+    override fun mouseScrolled(
+        mouseX: Double,
+        mouseY: Double,
+        horizontalAmount: Double,
+        verticalAmount: Double
+    ): Boolean {
+        return overview.mouseScrolled(mouseX, mouseY, horizontalAmount, verticalAmount)
+    }
+}
diff --git a/src/main/kotlin/features/inventory/storageoverlay/StorageOverlayScreen.kt b/src/main/kotlin/features/inventory/storageoverlay/StorageOverlayScreen.kt
new file mode 100644
index 0000000..13c6974
--- /dev/null
+++ b/src/main/kotlin/features/inventory/storageoverlay/StorageOverlayScreen.kt
@@ -0,0 +1,296 @@
+
+package moe.nea.firmament.features.inventory.storageoverlay
+
+import me.shedaniel.math.Point
+import me.shedaniel.math.Rectangle
+import net.minecraft.client.gui.DrawContext
+import net.minecraft.client.gui.screen.Screen
+import net.minecraft.screen.slot.Slot
+import net.minecraft.text.Text
+import net.minecraft.util.Identifier
+import moe.nea.firmament.annotations.Subscribe
+import moe.nea.firmament.events.CommandEvent
+import moe.nea.firmament.util.MC
+import moe.nea.firmament.util.ScreenUtil
+import moe.nea.firmament.util.assertTrueOr
+
+class StorageOverlayScreen : Screen(Text.literal("")) {
+
+    companion object {
+        val PLAYER_WIDTH = 184
+        val PLAYER_HEIGHT = 91
+        val PLAYER_Y_INSET = 3
+        val SLOT_SIZE = 18
+        val PADDING = 10
+        val PAGE_WIDTH = SLOT_SIZE * 9
+        val HOTBAR_X = 12
+        val HOTBAR_Y = 67
+        val MAIN_INVENTORY_Y = 9
+        val SCROLL_BAR_WIDTH = 8
+        val SCROLL_BAR_HEIGHT = 16
+    }
+
+    var isExiting: Boolean = false
+    var scroll: Float = 0F
+    var pageWidthCount = StorageOverlay.TConfig.columns
+
+    inner class Measurements {
+        val innerScrollPanelWidth = PAGE_WIDTH * pageWidthCount + (pageWidthCount - 1) * PADDING
+        val overviewWidth = innerScrollPanelWidth + 3 * PADDING + SCROLL_BAR_WIDTH
+        val x = width / 2 - overviewWidth / 2
+        val overviewHeight = minOf(3 * 18 * 6, height - PLAYER_HEIGHT - minOf(80, height / 10))
+        val innerScrollPanelHeight = overviewHeight - PADDING * 2
+        val y = height / 2 - (overviewHeight + PLAYER_HEIGHT) / 2
+        val playerX = width / 2 - PLAYER_WIDTH / 2
+        val playerY = y + overviewHeight - PLAYER_Y_INSET
+        val totalWidth = overviewWidth
+        val totalHeight = overviewHeight - PLAYER_Y_INSET + PLAYER_HEIGHT
+    }
+
+    var measurements = Measurements()
+
+    var lastRenderedInnerHeight = 0
+    public override fun init() {
+        super.init()
+        pageWidthCount = StorageOverlay.TConfig.columns
+            .coerceAtMost((width - PADDING) / (PAGE_WIDTH + PADDING))
+            .coerceAtLeast(1)
+        measurements = Measurements()
+    }
+
+    override fun mouseScrolled(
+        mouseX: Double,
+        mouseY: Double,
+        horizontalAmount: Double,
+        verticalAmount: Double
+    ): Boolean {
+        scroll = (scroll + StorageOverlay.adjustScrollSpeed(verticalAmount)).toFloat()
+            .coerceAtMost(getMaxScroll())
+            .coerceAtLeast(0F)
+        return true
+    }
+
+    fun getMaxScroll() = lastRenderedInnerHeight.toFloat() - getScrollPanelInner().height
+
+    val playerInventorySprite = Identifier.of("firmament:storageoverlay/player_inventory")
+    val upperBackgroundSprite = Identifier.of("firmament:storageoverlay/upper_background")
+    val slotRowSprite = Identifier.of("firmament:storageoverlay/storage_row")
+    val scrollbarBackground = Identifier.of("firmament:storageoverlay/scroll_bar_background")
+    val scrollbarKnob = Identifier.of("firmament:storageoverlay/scroll_bar_knob")
+
+    override fun close() {
+        isExiting = true
+        super.close()
+    }
+
+    override fun render(context: DrawContext, mouseX: Int, mouseY: Int, delta: Float) {
+        super.render(context, mouseX, mouseY, delta)
+        drawBackgrounds(context)
+        drawPages(context, mouseX, mouseY, delta, null, null, Point())
+        drawScrollBar(context)
+        drawPlayerInventory(context, mouseX, mouseY, delta)
+    }
+
+    fun getScrollbarPercentage(): Float {
+        return scroll / getMaxScroll()
+    }
+
+    fun drawScrollBar(context: DrawContext) {
+        val sbRect = getScrollBarRect()
+        context.drawGuiTexture(
+            scrollbarBackground,
+            sbRect.minX, sbRect.minY,
+            sbRect.width, sbRect.height,
+        )
+        context.drawGuiTexture(
+            scrollbarKnob,
+            sbRect.minX, sbRect.minY + (getScrollbarPercentage() * (sbRect.height - SCROLL_BAR_HEIGHT)).toInt(),
+            SCROLL_BAR_WIDTH, SCROLL_BAR_HEIGHT
+        )
+    }
+
+    fun drawBackgrounds(context: DrawContext) {
+        context.drawGuiTexture(upperBackgroundSprite,
+                               measurements.x,
+                               measurements.y,
+                               0,
+                               measurements.overviewWidth,
+                               measurements.overviewHeight)
+        context.drawGuiTexture(playerInventorySprite,
+                               measurements.playerX,
+                               measurements.playerY,
+                               0,
+                               PLAYER_WIDTH,
+                               PLAYER_HEIGHT)
+    }
+
+    fun getPlayerInventorySlotPosition(int: Int): Pair<Int, Int> {
+        if (int < 9) {
+            return Pair(measurements.playerX + int * SLOT_SIZE + HOTBAR_X, HOTBAR_Y + measurements.playerY)
+        }
+        return Pair(
+            measurements.playerX + (int % 9) * SLOT_SIZE + HOTBAR_X,
+            measurements.playerY + (int / 9 - 1) * SLOT_SIZE + MAIN_INVENTORY_Y
+        )
+    }
+
+    fun drawPlayerInventory(context: DrawContext, mouseX: Int, mouseY: Int, delta: Float) {
+        val items = MC.player?.inventory?.main ?: return
+        items.withIndex().forEach { (index, item) ->
+            val (x, y) = getPlayerInventorySlotPosition(index)
+            context.drawItem(item, x, y, 0)
+            context.drawItemInSlot(textRenderer, item, x, y)
+        }
+    }
+
+    fun getScrollBarRect(): Rectangle {
+        return Rectangle(measurements.x + PADDING + measurements.innerScrollPanelWidth + PADDING,
+                         measurements.y + PADDING,
+                         SCROLL_BAR_WIDTH,
+                         measurements.innerScrollPanelHeight)
+    }
+
+    fun getScrollPanelInner(): Rectangle {
+        return Rectangle(measurements.x + PADDING,
+                         measurements.y + PADDING,
+                         measurements.innerScrollPanelWidth,
+                         measurements.innerScrollPanelHeight)
+    }
+
+    fun createScissors(context: DrawContext) {
+        val rect = getScrollPanelInner()
+        context.enableScissor(
+            rect.minX, rect.minY,
+            rect.maxX, rect.maxY
+        )
+    }
+
+    fun drawPages(
+        context: DrawContext, mouseX: Int, mouseY: Int, delta: Float,
+        excluding: StoragePageSlot?,
+        slots: List<Slot>?,
+        slotOffset: Point
+    ) {
+        createScissors(context)
+        val data = StorageOverlay.Data.data ?: StorageData()
+        layoutedForEach(data) { rect, page, inventory ->
+            drawPage(context,
+                     rect.x,
+                     rect.y,
+                     page, inventory,
+                     if (excluding == page) slots else null,
+                     slotOffset
+            )
+        }
+        context.disableScissor()
+    }
+
+    override fun mouseClicked(mouseX: Double, mouseY: Double, button: Int): Boolean {
+        return mouseClicked(mouseX, mouseY, button, null)
+    }
+
+    fun mouseClicked(mouseX: Double, mouseY: Double, button: Int, activePage: StoragePageSlot?): Boolean {
+        if (getScrollPanelInner().contains(mouseX, mouseY)) {
+            val data = StorageOverlay.Data.data ?: StorageData()
+            layoutedForEach(data) { rect, page, _ ->
+                if (rect.contains(mouseX, mouseY) && activePage != page && button == 0) {
+                    page.navigateTo()
+                    return true
+                }
+            }
+            return false
+        }
+        val sbRect = getScrollBarRect()
+        if (sbRect.contains(mouseX, mouseY)) {
+            // TODO: support dragging of the mouse and such
+            val percentage = (mouseY - sbRect.getY()) / sbRect.getHeight()
+            scroll = (getMaxScroll() * percentage).toFloat()
+            mouseScrolled(0.0, 0.0, 0.0, 0.0)
+            return true
+        }
+        return false
+    }
+
+    private inline fun layoutedForEach(
+        data: StorageData,
+        func: (
+            rectangle: Rectangle,
+            page: StoragePageSlot, inventory: StorageData.StorageInventory,
+        ) -> Unit
+    ) {
+        var yOffset = -scroll.toInt()
+        var xOffset = 0
+        var maxHeight = 0
+        for ((page, inventory) in data.storageInventories.entries) {
+            val currentHeight = inventory.inventory?.let { it.rows * SLOT_SIZE + 4 + textRenderer.fontHeight }
+                ?: 18
+            maxHeight = maxOf(maxHeight, currentHeight)
+            val rect = Rectangle(
+                measurements.x + PADDING + (PAGE_WIDTH + PADDING) * xOffset,
+                yOffset + measurements.y + PADDING,
+                PAGE_WIDTH,
+                currentHeight
+            )
+            func(rect, page, inventory)
+            xOffset++
+            if (xOffset >= pageWidthCount) {
+                yOffset += maxHeight
+                xOffset = 0
+                maxHeight = 0
+            }
+        }
+        lastRenderedInnerHeight = maxHeight + yOffset + scroll.toInt()
+    }
+
+    fun drawPage(
+        context: DrawContext,
+        x: Int,
+        y: Int,
+        page: StoragePageSlot,
+        inventory: StorageData.StorageInventory,
+        slots: List<Slot>?,
+        slotOffset: Point,
+    ): Int {
+        val inv = inventory.inventory
+        if (inv == null) {
+            context.drawGuiTexture(upperBackgroundSprite, x, y, PAGE_WIDTH, 18)
+            context.drawText(textRenderer,
+                             Text.literal("TODO: open this page"),
+                             x + 4,
+                             y + 4,
+                             -1,
+                             true)
+            return 18
+        }
+        assertTrueOr(slots == null || slots.size == inv.stacks.size) { return 0 }
+        val name = page.defaultName()
+        context.drawText(textRenderer, Text.literal(name), x + 4, y + 2,
+                         if (slots == null) 0xFFFFFFFF.toInt() else 0xFFFFFF00.toInt(), true)
+        context.drawGuiTexture(slotRowSprite, x, y + 4 + textRenderer.fontHeight, PAGE_WIDTH, inv.rows * SLOT_SIZE)
+        inv.stacks.forEachIndexed { index, stack ->
+            val slotX = (index % 9) * SLOT_SIZE + x + 1
+            val slotY = (index / 9) * SLOT_SIZE + y + 4 + textRenderer.fontHeight + 1
+            if (slots == null) {
+                context.drawItem(stack, slotX, slotY)
+                context.drawItemInSlot(textRenderer, stack, slotX, slotY)
+            } else {
+                val slot = slots[index]
+                slot.x = slotX - slotOffset.x
+                slot.y = slotY - slotOffset.y
+            }
+        }
+        return inv.rows * SLOT_SIZE + 4 + textRenderer.fontHeight
+    }
+
+    fun getBounds(): List<Rectangle> {
+        return listOf(
+            Rectangle(measurements.x,
+                      measurements.y,
+                      measurements.overviewWidth,
+                      measurements.overviewHeight),
+            Rectangle(measurements.playerX,
+                      measurements.playerY,
+                      PLAYER_WIDTH,
+                      PLAYER_HEIGHT))
+    }
+}
diff --git a/src/main/kotlin/features/inventory/storageoverlay/StorageOverviewScreen.kt b/src/main/kotlin/features/inventory/storageoverlay/StorageOverviewScreen.kt
new file mode 100644
index 0000000..2cbd54e
--- /dev/null
+++ b/src/main/kotlin/features/inventory/storageoverlay/StorageOverviewScreen.kt
@@ -0,0 +1,123 @@
+
+
+package moe.nea.firmament.features.inventory.storageoverlay
+
+import org.lwjgl.glfw.GLFW
+import kotlin.math.max
+import net.minecraft.block.Blocks
+import net.minecraft.client.gui.DrawContext
+import net.minecraft.client.gui.screen.Screen
+import net.minecraft.item.Item
+import net.minecraft.item.Items
+import net.minecraft.text.Text
+import net.minecraft.util.DyeColor
+import moe.nea.firmament.util.MC
+import moe.nea.firmament.util.toShedaniel
+
+class StorageOverviewScreen() : Screen(Text.empty()) {
+    companion object {
+        val emptyStorageSlotItems = listOf<Item>(
+            Blocks.RED_STAINED_GLASS_PANE.asItem(),
+            Blocks.BROWN_STAINED_GLASS_PANE.asItem(),
+            Items.GRAY_DYE
+        )
+        val pageWidth get() = 19 * 9
+    }
+
+    val content = StorageOverlay.Data.data ?: StorageData()
+    var isClosing = false
+
+    var scroll = 0
+    var lastRenderedHeight = 0
+
+    override fun render(context: DrawContext, mouseX: Int, mouseY: Int, delta: Float) {
+        super.render(context, mouseX, mouseY, delta)
+        context.fill(0, 0, width, height, 0x90000000.toInt())
+        layoutedForEach { (key, value), offsetX, offsetY ->
+            context.matrices.push()
+            context.matrices.translate(offsetX.toFloat(), offsetY.toFloat(), 0F)
+            renderStoragePage(context, value, mouseX - offsetX, mouseY - offsetY)
+            context.matrices.pop()
+        }
+    }
+
+    inline fun layoutedForEach(onEach: (data: Pair<StoragePageSlot, StorageData.StorageInventory>, offsetX: Int, offsetY: Int) -> Unit) {
+        var offsetY = 0
+        var currentMaxHeight = StorageOverlay.config.margin - StorageOverlay.config.padding - scroll
+        var totalHeight = -currentMaxHeight
+        content.storageInventories.onEachIndexed { index, (key, value) ->
+            val pageX = (index % StorageOverlay.config.columns)
+            if (pageX == 0) {
+                currentMaxHeight += StorageOverlay.config.padding
+                offsetY += currentMaxHeight
+                totalHeight += currentMaxHeight
+                currentMaxHeight = 0
+            }
+            val xPosition =
+                width / 2 - (StorageOverlay.config.columns * (pageWidth + StorageOverlay.config.padding) - StorageOverlay.config.padding) / 2 + pageX * (pageWidth + StorageOverlay.config.padding)
+            onEach(Pair(key, value), xPosition, offsetY)
+            val height = getStorePageHeight(value)
+            currentMaxHeight = max(currentMaxHeight, height)
+        }
+        lastRenderedHeight = totalHeight + currentMaxHeight
+    }
+
+    override fun mouseClicked(mouseX: Double, mouseY: Double, button: Int): Boolean {
+        layoutedForEach { (k, p), x, y ->
+            val rx = mouseX - x
+            val ry = mouseY - y
+            if (rx in (0.0..pageWidth.toDouble()) && ry in (0.0..getStorePageHeight(p).toDouble())) {
+                close()
+                StorageOverlay.lastStorageOverlay = this
+                k.navigateTo()
+                return true
+            }
+        }
+        return super.mouseClicked(mouseX, mouseY, button)
+    }
+
+    fun getStorePageHeight(page: StorageData.StorageInventory): Int {
+        return page.inventory?.rows?.let { it * 19 + MC.font.fontHeight + 2 } ?: 60
+    }
+
+    override fun mouseScrolled(
+        mouseX: Double,
+        mouseY: Double,
+        horizontalAmount: Double,
+        verticalAmount: Double
+    ): Boolean {
+        scroll =
+            (scroll + StorageOverlay.adjustScrollSpeed(verticalAmount)).toInt()
+                .coerceAtMost(lastRenderedHeight - height + 2 * StorageOverlay.config.margin).coerceAtLeast(0)
+        return true
+    }
+
+    private fun renderStoragePage(context: DrawContext, page: StorageData.StorageInventory, mouseX: Int, mouseY: Int) {
+        context.drawText(MC.font, page.title, 2, 2, -1, true)
+        val inventory = page.inventory
+        if (inventory == null) {
+            // TODO: Missing texture
+            context.fill(0, 0, pageWidth, 60, DyeColor.RED.toShedaniel().darker(4.0).color)
+            context.drawCenteredTextWithShadow(MC.font, Text.literal("Not loaded yet"), pageWidth / 2, 30, -1)
+            return
+        }
+
+        for ((index, stack) in inventory.stacks.withIndex()) {
+            val x = (index % 9) * 19
+            val y = (index / 9) * 19 + MC.font.fontHeight + 2
+            if (((mouseX - x) in 0 until 18) && ((mouseY - y) in 0 until 18)) {
+                context.fill(x, y, x + 18, y + 18, 0x80808080.toInt())
+            } else {
+                context.fill(x, y, x + 18, y + 18, 0x40808080.toInt())
+            }
+            context.drawItem(stack, x + 1, y + 1)
+            context.drawItemInSlot(MC.font, stack, x + 1, y + 1)
+        }
+    }
+
+    override fun keyPressed(keyCode: Int, scanCode: Int, modifiers: Int): Boolean {
+        if (keyCode == GLFW.GLFW_KEY_ESCAPE)
+            isClosing = true
+        return super.keyPressed(keyCode, scanCode, modifiers)
+    }
+}
diff --git a/src/main/kotlin/features/inventory/storageoverlay/StoragePageSlot.kt b/src/main/kotlin/features/inventory/storageoverlay/StoragePageSlot.kt
new file mode 100644
index 0000000..9259415
--- /dev/null
+++ b/src/main/kotlin/features/inventory/storageoverlay/StoragePageSlot.kt
@@ -0,0 +1,66 @@
+
+
+package moe.nea.firmament.features.inventory.storageoverlay
+
+import kotlinx.serialization.KSerializer
+import kotlinx.serialization.Serializable
+import kotlinx.serialization.descriptors.PrimitiveKind
+import kotlinx.serialization.descriptors.PrimitiveSerialDescriptor
+import kotlinx.serialization.descriptors.SerialDescriptor
+import kotlinx.serialization.encoding.Decoder
+import kotlinx.serialization.encoding.Encoder
+import moe.nea.firmament.util.MC
+
+@Serializable(with = StoragePageSlot.Serializer::class)
+data class StoragePageSlot(val index: Int) : Comparable<StoragePageSlot> {
+    object Serializer : KSerializer<StoragePageSlot> {
+        override val descriptor: SerialDescriptor = PrimitiveSerialDescriptor("StoragePageSlot", PrimitiveKind.INT)
+
+        override fun deserialize(decoder: Decoder): StoragePageSlot {
+            return StoragePageSlot(decoder.decodeInt())
+        }
+
+        override fun serialize(encoder: Encoder, value: StoragePageSlot) {
+            encoder.encodeInt(value.index)
+        }
+    }
+
+    init {
+        assert(index in 0 until (3 * 9))
+    }
+
+    val isEnderChest get() = index < 9
+    val isBackPack get() = !isEnderChest
+    val slotIndexInOverviewPage get() = if (isEnderChest) index + 9 else index + 18
+    fun defaultName(): String = if (isEnderChest) "Ender Chest #${index + 1}" else "Backpack #${index - 9 + 1}"
+
+    fun navigateTo() {
+        if (isBackPack) {
+            MC.sendCommand("backpack ${index - 9 + 1}")
+        } else {
+            MC.sendCommand("enderchest ${index + 1}")
+        }
+    }
+
+    companion object {
+        fun fromOverviewSlotIndex(slot: Int): StoragePageSlot? {
+            if (slot in 9 until 18) return StoragePageSlot(slot - 9)
+            if (slot in 27 until 45) return StoragePageSlot(slot - 27 + 9)
+            return null
+        }
+
+        fun ofEnderChestPage(slot: Int): StoragePageSlot {
+            assert(slot in 1..9)
+            return StoragePageSlot(slot - 1)
+        }
+
+        fun ofBackPackPage(slot: Int): StoragePageSlot {
+            assert(slot in 1..18)
+            return StoragePageSlot(slot - 1 + 9)
+        }
+    }
+
+    override fun compareTo(other: StoragePageSlot): Int {
+        return this.index - other.index
+    }
+}
diff --git a/src/main/kotlin/features/inventory/storageoverlay/VirtualInventory.kt b/src/main/kotlin/features/inventory/storageoverlay/VirtualInventory.kt
new file mode 100644
index 0000000..e07df8a
--- /dev/null
+++ b/src/main/kotlin/features/inventory/storageoverlay/VirtualInventory.kt
@@ -0,0 +1,65 @@
+
+
+package moe.nea.firmament.features.inventory.storageoverlay
+
+import io.ktor.util.decodeBase64Bytes
+import io.ktor.util.encodeBase64
+import java.io.ByteArrayInputStream
+import java.io.ByteArrayOutputStream
+import kotlinx.serialization.KSerializer
+import kotlinx.serialization.Serializable
+import kotlinx.serialization.descriptors.PrimitiveKind
+import kotlinx.serialization.descriptors.PrimitiveSerialDescriptor
+import kotlinx.serialization.descriptors.SerialDescriptor
+import kotlinx.serialization.encoding.Decoder
+import kotlinx.serialization.encoding.Encoder
+import net.minecraft.item.ItemStack
+import net.minecraft.nbt.NbtCompound
+import net.minecraft.nbt.NbtIo
+import net.minecraft.nbt.NbtList
+import net.minecraft.nbt.NbtOps
+import net.minecraft.nbt.NbtSizeTracker
+
+@Serializable(with = VirtualInventory.Serializer::class)
+data class VirtualInventory(
+    val stacks: List<ItemStack>
+) {
+    val rows = stacks.size / 9
+
+    init {
+        assert(stacks.size % 9 == 0)
+        assert(stacks.size / 9 in 1..5)
+    }
+
+
+    object Serializer : KSerializer<VirtualInventory> {
+        const val INVENTORY = "INVENTORY"
+        override val descriptor: SerialDescriptor
+            get() = PrimitiveSerialDescriptor("VirtualInventory", PrimitiveKind.STRING)
+
+        override fun deserialize(decoder: Decoder): VirtualInventory {
+            val s = decoder.decodeString()
+            val n = NbtIo.readCompressed(ByteArrayInputStream(s.decodeBase64Bytes()), NbtSizeTracker.of(100_000_000))
+            val items = n.getList(INVENTORY, NbtCompound.COMPOUND_TYPE.toInt())
+            return VirtualInventory(items.map {
+                it as NbtCompound
+                if (it.isEmpty) ItemStack.EMPTY
+                else runCatching {
+                    ItemStack.CODEC.parse(NbtOps.INSTANCE, it).orThrow
+                }.getOrElse { ItemStack.EMPTY }
+            })
+        }
+
+        override fun serialize(encoder: Encoder, value: VirtualInventory) {
+            val list = NbtList()
+            value.stacks.forEach {
+                if (it.isEmpty) list.add(NbtCompound())
+                else list.add(runCatching { ItemStack.CODEC.encode(it, NbtOps.INSTANCE, NbtCompound()).orThrow }
+                                  .getOrElse { NbtCompound() })
+            }
+            val baos = ByteArrayOutputStream()
+            NbtIo.writeCompressed(NbtCompound().also { it.put(INVENTORY, list) }, baos)
+            encoder.encodeString(baos.toByteArray().encodeBase64())
+        }
+    }
+}