Merge branch '1.21' into world-structures

src/main/kotlin/ru/dbotthepony/mc/otm/block/MatteryBlock.kt

@@ -14,6 +14,7 @@ import net.minecraft.nbt.CompoundTag
 import net.minecraft.nbt.NbtOps
 import net.minecraft.network.chat.Component
 import net.minecraft.network.chat.ComponentSerialization
+import net.minecraft.server.level.ServerLevel
 import net.minecraft.util.RandomSource
 import net.minecraft.world.Containers
 import net.minecraft.world.InteractionResult
@@ -259,15 +260,11 @@ open class MatteryBlock(properties: Properties = DEFAULT_PROPERTIES) : Block(pro
 		newBlockState: BlockState,
 		movedByPiston: Boolean
 	) {
-		if (!oldBlockState.`is`(newBlockState.block) && !level.isClientSide) {
+		if (!oldBlockState.`is`(newBlockState.block) && level is ServerLevel) {
 			val blockentity = level.getBlockEntity(blockPos)
 
 			if (blockentity is MatteryBlockEntity) {
-				blockentity.beforeDroppingItems(oldBlockState, level, blockPos, newBlockState, movedByPiston)
-
-				for (container in blockentity.droppableContainers)
-					Containers.dropContents(level, blockPos, container)
-
+				blockentity.dropItems(oldBlockState, level, blockPos, newBlockState, movedByPiston)
 				level.updateNeighbourForOutputSignal(blockPos, this)
 			}
 		}

src/main/kotlin/ru/dbotthepony/mc/otm/block/decorative/BreakableContainerBlock.kt

@@ -0,0 +1,26 @@
+package ru.dbotthepony.mc.otm.block.decorative
+
+import net.minecraft.core.BlockPos
+import net.minecraft.world.item.ItemStack
+import net.minecraft.world.level.block.EntityBlock
+import net.minecraft.world.level.block.entity.BlockEntity
+import net.minecraft.world.level.block.state.BlockState
+import net.minecraft.world.level.storage.loot.LootParams
+import net.minecraft.world.level.storage.loot.parameters.LootContextParams
+import ru.dbotthepony.mc.otm.block.RotatableMatteryBlock
+import ru.dbotthepony.mc.otm.block.entity.decorative.BreakableContainerBlockEntity
+
+class BreakableContainerBlock(properties: Properties) : RotatableMatteryBlock(properties), EntityBlock {
+	override fun newBlockEntity(pos: BlockPos, state: BlockState): BlockEntity {
+		return BreakableContainerBlockEntity(pos, state)
+	}
+
+	override fun getDrops(state: BlockState, params: LootParams.Builder): MutableList<ItemStack> {
+		val entity = params.getOptionalParameter(LootContextParams.BLOCK_ENTITY)
+
+		if (entity is BreakableContainerBlockEntity)
+			return entity.loot.getItems(params, state)
+
+		return super.getDrops(state, params)
+	}
+}

src/main/kotlin/ru/dbotthepony/mc/otm/block/entity/MatteryBlockEntity.kt

@@ -17,6 +17,7 @@ import net.minecraft.nbt.CompoundTag
 import net.minecraft.server.level.ServerLevel
 import net.minecraft.server.level.ServerPlayer
 import net.minecraft.world.Container
+import net.minecraft.world.Containers
 import net.minecraft.world.entity.player.Player
 import net.minecraft.world.level.ChunkPos
 import net.minecraft.world.level.Level
@@ -70,7 +71,7 @@ import kotlin.collections.ArrayList
 /**
  * Absolute barebone (lol) block entity class in Overdrive that Matters, providing bare minimum (lulmao, minecraft engine) functionality
  */
-abstract class MatteryBlockEntity(p_155228_: BlockEntityType<*>, p_155229_: BlockPos, p_155230_: BlockState) : BlockEntity(p_155228_, p_155229_, p_155230_), INeighbourChangeListener {
+abstract class MatteryBlockEntity(type: BlockEntityType<*>, pos: BlockPos, state: BlockState) : BlockEntity(type, pos, state), INeighbourChangeListener {
 	private val sidelessCaps = Reference2ObjectOpenHashMap<BlockCapability<*, *>, Any>()
 	private val sidedCaps = Array(RelativeSide.entries.size) {
 		Reference2ObjectOpenHashMap<BlockCapability<*, *>, ControllableCapability<*>>()
@@ -121,7 +122,11 @@ abstract class MatteryBlockEntity(p_155228_: BlockEntityType<*>, p_155229_: Bloc
 		_neighbourChangeListeners.add(listener)
 	}
 
-	open fun beforeDroppingItems(oldBlockState: BlockState, level: Level, blockPos: BlockPos, newBlockState: BlockState, movedByPiston: Boolean) {}
+	open fun dropItems(oldBlockState: BlockState, level: ServerLevel, blockPos: BlockPos, newBlockState: BlockState, movedByPiston: Boolean) {
+		for (container in droppableContainers)
+			Containers.dropContents(level, blockPos, container)
+	}
+
 	open fun beforeDestroyedByPlayer(level: Level, blockPos: BlockPos, blockState: BlockState, player: Player) {}
 
 	open fun tick() {

src/main/kotlin/ru/dbotthepony/mc/otm/block/entity/decorative/BreakableContainerBlockEntity.kt

@@ -0,0 +1,23 @@
+package ru.dbotthepony.mc.otm.block.entity.decorative
+
+import net.minecraft.core.BlockPos
+import net.minecraft.core.HolderLookup
+import net.minecraft.nbt.CompoundTag
+import net.minecraft.world.level.block.state.BlockState
+import ru.dbotthepony.mc.otm.block.entity.MatteryBlockEntity
+import ru.dbotthepony.mc.otm.core.util.BlockLootTableHolder
+import ru.dbotthepony.mc.otm.registry.game.MBlockEntities
+
+class BreakableContainerBlockEntity(blockPos: BlockPos, blockState: BlockState) : MatteryBlockEntity(MBlockEntities.BREAKABLE, blockPos, blockState) {
+	val loot = BlockLootTableHolder(::markDirtyFast)
+
+	override fun saveLevel(nbt: CompoundTag, registry: HolderLookup.Provider) {
+		super.saveLevel(nbt, registry)
+		loot.save(nbt, registry)
+	}
+
+	override fun loadAdditional(nbt: CompoundTag, registry: HolderLookup.Provider) {
+		super.loadAdditional(nbt, registry)
+		loot.load(nbt, registry)
+	}
+}

src/main/kotlin/ru/dbotthepony/mc/otm/block/entity/decorative/CargoCrateBlockEntity.kt

@@ -1,18 +1,11 @@
 package ru.dbotthepony.mc.otm.block.entity.decorative
 
-import net.minecraft.advancements.CriteriaTriggers
 import net.minecraft.core.BlockPos
 import net.minecraft.core.HolderLookup
-import net.minecraft.core.registries.Registries
 import net.minecraft.nbt.CompoundTag
-import net.minecraft.nbt.Tag
 import net.minecraft.network.chat.Component
-import net.minecraft.resources.ResourceKey
-import net.minecraft.resources.ResourceLocation
 import net.minecraft.server.level.ServerLevel
-import net.minecraft.server.level.ServerPlayer
 import net.minecraft.sounds.SoundSource
-import net.minecraft.world.Containers
 import net.minecraft.world.entity.player.Inventory
 import net.minecraft.world.entity.player.Player
 import net.minecraft.world.inventory.AbstractContainerMenu
@@ -21,18 +14,14 @@ import net.minecraft.world.level.Level
 import net.minecraft.world.level.block.Block
 import net.minecraft.world.level.block.state.BlockState
 import net.minecraft.world.level.gameevent.GameEvent
-import net.minecraft.world.level.storage.loot.LootParams
-import net.minecraft.world.level.storage.loot.LootTable
-import net.minecraft.world.level.storage.loot.parameters.LootContextParamSets
-import net.minecraft.world.level.storage.loot.parameters.LootContextParams
-import net.minecraft.world.phys.Vec3
 import net.neoforged.neoforge.capabilities.Capabilities
 import ru.dbotthepony.mc.otm.block.decorative.CargoCrateBlock
 import ru.dbotthepony.mc.otm.block.entity.MatteryDeviceBlockEntity
-import ru.dbotthepony.mc.otm.container.MatteryContainer
 import ru.dbotthepony.mc.otm.container.HandlerFilter
+import ru.dbotthepony.mc.otm.container.MatteryContainer
 import ru.dbotthepony.mc.otm.core.TranslatableComponent
 import ru.dbotthepony.mc.otm.core.otmRandom
+import ru.dbotthepony.mc.otm.core.util.BlockLootTableHolder
 import ru.dbotthepony.mc.otm.menu.decorative.CargoCrateMenu
 import ru.dbotthepony.mc.otm.registry.game.MBlockEntities
 import ru.dbotthepony.mc.otm.registry.game.MSoundEvents
@@ -47,24 +36,30 @@ class CargoCrateBlockEntity(
 
 	val handler = container.handler(object : HandlerFilter {
 		override fun canInsert(slot: Int, stack: ItemStack): Boolean {
-			return lootTable == null
+			return loot.lootTable == null
 		}
 
 		override fun canExtract(slot: Int, amount: Int, stack: ItemStack): Boolean {
-			return lootTable == null
+			return loot.lootTable == null
 		}
 	})
 
-	override fun beforeDroppingItems(oldBlockState: BlockState, level: Level, blockPos: BlockPos, newBlockState: BlockState, movedByPiston: Boolean) {
+	override fun dropItems(
+		oldBlockState: BlockState,
+		level: ServerLevel,
+		blockPos: BlockPos,
+		newBlockState: BlockState,
+		movedByPiston: Boolean
+	) {
 		unpackLootTable()
+		super.dropItems(oldBlockState, level, blockPos, newBlockState, movedByPiston)
 	}
 
 	override fun beforeDestroyedByPlayer(level: Level, blockPos: BlockPos, blockState: BlockState, player: Player) {
 		unpackLootTable(player)
 	}
 
-	var lootTable: ResourceKey<LootTable>? = null
-	var lootTableSeed: Long? = null
+	val loot = BlockLootTableHolder(::markDirtyFast)
 
 	fun onPlayerOpen() {
 		val level = level
@@ -92,52 +87,24 @@ class CargoCrateBlockEntity(
 
 	override fun saveLevel(nbt: CompoundTag, registry: HolderLookup.Provider) {
 		super.saveLevel(nbt, registry)
-
-		if (lootTable != null) {
-			nbt.putString(LOOT_TABLE_KEY, lootTable!!.location().toString())
-			nbt.putLong(LOOT_TABLE_SEED_KEY, lootTableSeed ?: 0L)
-		}
+		loot.save(nbt, registry)
 	}
 
 	override fun loadAdditional(nbt: CompoundTag, registry: HolderLookup.Provider) {
 		super.loadAdditional(nbt, registry)
-
-		if (nbt.contains(LOOT_TABLE_KEY, Tag.TAG_STRING.toInt())) {
-			lootTable = ResourceLocation.tryParse(nbt.getString(LOOT_TABLE_KEY))?.let { ResourceKey.create(Registries.LOOT_TABLE, it) }
-			lootTableSeed = if (nbt.contains(LOOT_TABLE_SEED_KEY, Tag.TAG_LONG.toInt())) nbt.getLong(LOOT_TABLE_SEED_KEY) else 0L
-		}
+		loot.load(nbt, registry)
 	}
 
-	fun unpackLootTable(ply: Player? = null) {
-		val lootTable = lootTable ?: return
-		val lootTableSeed = lootTableSeed ?: 0L
-		val server = level?.server ?: return
-
-		val loot = server.reloadableRegistries().getLootTable(lootTable)
-
-		if (ply is ServerPlayer) {
-			CriteriaTriggers.GENERATE_LOOT.trigger(ply, lootTable)
-		}
-
-		this.lootTable = null
-		this.lootTableSeed = null
-
-		val params = LootParams.Builder(level as ServerLevel)
-			.withParameter(LootContextParams.ORIGIN, Vec3.atCenterOf(this.worldPosition))
-
-		if (ply != null) {
-			params.withLuck(ply.luck).withParameter(LootContextParams.THIS_ENTITY, ply)
-		}
-
-		Containers.dropContents(level as ServerLevel, blockPos, container)
-		loot.fill(container, params.create(LootContextParamSets.CHEST), lootTableSeed)
+	private fun unpackLootTable(ply: Player? = null) {
+		loot.fill(level as? ServerLevel ?: return, blockPos, container, ply = ply, blockEntity = this)
+		loot.clear()
 	}
 
 	override val defaultDisplayName: Component
 		get() = MACHINE_NAME
 
 	override fun createMenu(containerID: Int, inventory: Inventory, ply: Player): AbstractContainerMenu? {
-		if (lootTable != null && ply.isSpectator)
+		if (loot.lootTable != null && ply.isSpectator)
 			return null
 
 		unpackLootTable(ply)

src/main/kotlin/ru/dbotthepony/mc/otm/block/entity/matter/MatterRecyclerBlockEntity.kt

@@ -117,7 +117,7 @@ class MatterRecyclerBlockEntity(blockPos: BlockPos, blockState: BlockState)
 		stack.shrink(1)
 		container.setChanged(0)
 
-		val actualMatter = dustMatter.matter * (0.4 + level!!.otmRandom.nextDouble() * 0.6)
+		val actualMatter = dustMatter.matter
 
 		return JobContainer.success(
 			RecyclerJob(
@@ -134,10 +134,11 @@ class MatterRecyclerBlockEntity(blockPos: BlockPos, blockState: BlockState)
 
 		if (toReceive.isZero)
 			return status.success()
+		else if (matter.receiveMatter(toReceive, true) != toReceive)
+			return status.noMatter()
 
-		val received = matter.receiveMatter(toReceive, false)
-		status.scale(received / toReceive)
-		job.totalMatter -= received
+		matter.receiveMatter(toReceive * 0.4 + level!!.otmRandom.nextDouble() * 0.6, false)
+		job.totalMatter -= toReceive
 	}
 
 	override fun tick() {

src/main/kotlin/ru/dbotthepony/mc/otm/client/render/MGUIGraphics.kt

@@ -14,6 +14,8 @@ import net.minecraft.world.inventory.tooltip.TooltipComponent
 import net.minecraft.world.item.ItemStack
 import ru.dbotthepony.mc.otm.client.minecraft
 import ru.dbotthepony.kommons.math.RGBAColor
+import ru.dbotthepony.mc.otm.client.screen.panels.ScreenPos
+import java.util.Arrays
 import kotlin.math.PI
 import kotlin.math.roundToInt
 
@@ -45,6 +47,73 @@ class MGUIGraphics(val parent: GuiGraphics) {
 		drawLine(pose.last().pose(), startX, startY, endX, endY, width, z, color)
 	}
 
+	fun drawLine(
+		points: Iterable<LinePoint>,
+		width: Float,
+		color: RGBAColor = RGBAColor.WHITE
+	) {
+		drawLine(pose.last().pose(), points, width, color)
+	}
+
+	fun drawLine(
+		points: Array<out LinePoint>,
+		width: Float,
+		color: RGBAColor = RGBAColor.WHITE
+	) {
+		drawLine(pose.last().pose(), points, width, color)
+	}
+
+	fun drawLine(
+		width: Float,
+		color: RGBAColor,
+		vararg points: LinePoint,
+	) {
+		drawLine(pose.last().pose(), points, width, color)
+	}
+
+	fun drawLine(
+		width: Float,
+		color: RGBAColor,
+		points: Iterable<LinePoint>,
+	) {
+		drawLine(pose.last().pose(), points, width, color)
+	}
+
+	fun drawLine(
+		width: Float,
+		color: RGBAColor,
+		z: Float,
+		points: List<ScreenPos>,
+	) {
+		require(points.size >= 2) { "Degenerate point list: only ${points.size} defined" }
+
+		val result = ArrayList<LinePoint>(points.size)
+
+		for (i in 1 until points.size) {
+			val (x0, y0) = points[i - 1]
+			val (x1, y1) = points[i]
+
+			result.add(
+				LinePoint(
+					x0, y0,
+					x1, y1,
+					z
+				)
+			)
+		}
+
+		drawLine(pose.last().pose(), result, width, color)
+	}
+
+	fun drawLine(
+		width: Float,
+		color: RGBAColor,
+		z: Float,
+		vararg points: ScreenPos,
+	) {
+		drawLine(width, color, z, Arrays.asList(*points))
+	}
+
 	fun renderRect(
 		x: Float,
 		y: Float,

src/main/kotlin/ru/dbotthepony/mc/otm/client/render/RenderHelper.kt

@@ -294,6 +294,65 @@ fun renderColoredSphere(pose: PoseStack, radius: Float, color: RGBAColor = RGBAC
 	BufferUploader.drawWithShader(builder.buildOrThrow())
 }
 
+private fun uploadLineSegment(
+	builder: BufferBuilder,
+	matrix: Matrix4f,
+	startX: Float,
+	startY: Float,
+	endX: Float,
+	endY: Float,
+	width: Float,
+	z: Float,
+	color: RGBAColor = RGBAColor.WHITE
+) {
+	val length = ((startX - endX).pow(2f) + (startY - endY).pow(2f)).pow(0.5f)
+	var angle = acos((endX - startX) / length)
+
+	if (startY > endY)
+		angle *= -1f
+
+	val cos = cos(angle)
+	val sin = sin(angle)
+
+	val y0 = -width
+
+	val y1 = width
+
+	val x2 = length
+	val y2 = width
+
+	val x3 = length
+	val y3 = -width
+
+	builder.vertex(matrix,
+	   startX - y0 * sin,
+	   startY + y0 * cos,
+	   z).color(color)
+
+	builder.vertex(matrix,
+	   startX - y1 * sin,
+	   startY + y1 * cos,
+	   z).color(color)
+
+	builder.vertex(matrix,
+	   startX + x2 * cos - y2 * sin,
+	   startY + x2 * sin + y2 * cos,
+	   z).color(color)
+
+	builder.vertex(matrix,
+	   startX + x3 * cos - y3 * sin,
+	   startY + x3 * sin + y3 * cos,
+	   z).color(color)
+}
+
+data class LinePoint(
+	val startX: Float,
+	val startY: Float,
+	val endX: Float,
+	val endY: Float,
+	val z: Float = 0f,
+)
+
 fun drawLine(
 	matrix: Matrix4f,
 	startX: Float,
@@ -312,46 +371,46 @@ fun drawLine(
 		RenderSystem.depthFunc(GL_ALWAYS)
 
 	val builder = tesselator.begin(VertexFormat.Mode.QUADS, DefaultVertexFormat.POSITION_COLOR)
+	uploadLineSegment(builder, matrix, startX, startY, endX, endY, width, z, color)
+	BufferUploader.drawWithShader(builder.buildOrThrow())
+}
 
-	val length = ((startX - endX).pow(2f) + (startY - endY).pow(2f)).pow(0.5f)
-	val angle = acos((endX - startX) / length)
+fun drawLine(
+	matrix: Matrix4f,
+	points: Iterable<LinePoint>,
+	width: Float,
+	color: RGBAColor = RGBAColor.WHITE
+) {
+	val itr = points.iterator()
 
-	val cos = cos(angle)
-	val sin = sin(angle)
+	if (!itr.hasNext()) {
+		throw IllegalArgumentException("No line points were provided")
+	}
 
-	val y0 = -width
+	RenderSystem.setShader(GameRenderer::getPositionColorShader)
+	RenderSystem.enableBlend()
+	RenderSystem.defaultBlendFunc()
 
-	val y1 = width
+	if (!is3DContext)
+		RenderSystem.depthFunc(GL_ALWAYS)
 
-	val x2 = length
-	val y2 = width
+	val builder = tesselator.begin(VertexFormat.Mode.QUADS, DefaultVertexFormat.POSITION_COLOR)
 
-	val x3 = length
-	val y3 = -width
-
-	builder.vertex(matrix,
-		startX - y0 * sin,
-		startY + y0 * cos,
-		z).color(color)
-
-	builder.vertex(matrix,
-		startX - y1 * sin,
-		startY + y1 * cos,
-		z).color(color)
-
-	builder.vertex(matrix,
-		startX + x2 * cos - y2 * sin,
-		startY + x2 * sin + y2 * cos,
-		z).color(color)
-
-	builder.vertex(matrix,
-		startX + x3 * cos - y3 * sin,
-		startY + x3 * sin + y3 * cos,
-		z).color(color)
+	for ((startX, startY, endX, endY, z) in itr)
+		uploadLineSegment(builder, matrix, startX, startY, endX, endY, width, z, color)
 
 	BufferUploader.drawWithShader(builder.buildOrThrow())
 }
 
+fun drawLine(
+	matrix: Matrix4f,
+	points: Array<out LinePoint>,
+	width: Float,
+	color: RGBAColor = RGBAColor.WHITE
+) {
+	return drawLine(matrix, points.asIterable(), width, color)
+}
+
 data class ScissorRect(val xStart: Int, val yStart: Int, val xEnd: Int, val yEnd: Int, val lock: Boolean = false) {
 	val width: Int
 		get() = (xEnd - xStart).coerceAtLeast(0)

src/main/kotlin/ru/dbotthepony/mc/otm/client/render/Widgets18.kt

@@ -30,6 +30,7 @@ object Widgets18 {
 	val RESTOCK_FROM_STORAGE = storageGrid.next()
 	val RESTOCK_WITH_MOVE_TO_STORAGE = storageGrid.next()
 	val RESTOCK_WITH_MOVE_FROM_STORAGE = storageGrid.next()
+	val SMART_STORAGE_EXCHANGE = storageGrid.next()
 
 	private val miscGrid = WidgetLocation.WIDGET_18.grid(4, 4)
 

src/main/kotlin/ru/dbotthepony/mc/otm/client/render/blockentity/EnergyCounterRenderer.kt

@@ -20,12 +20,13 @@ import ru.dbotthepony.mc.otm.core.math.asAngle
 import ru.dbotthepony.mc.otm.core.math.clusterize
 import ru.dbotthepony.mc.otm.core.util.formatPower
 import ru.dbotthepony.mc.otm.core.math.times
+import ru.dbotthepony.mc.otm.core.util.GJRAND64RandomSource
 import java.util.Random
 import kotlin.math.PI
 import kotlin.math.absoluteValue
 
 class EnergyCounterRenderer(private val context: BlockEntityRendererProvider.Context) : BlockEntityRenderer<EnergyCounterBlockEntity> {
-	private val random = Random()
+	private val random = GJRAND64RandomSource()
 
 	override fun render(
 		tile: EnergyCounterBlockEntity,

src/main/kotlin/ru/dbotthepony/mc/otm/client/screen/MatteryScreen.kt

@@ -17,9 +17,11 @@ import net.neoforged.neoforge.common.NeoForge
 import org.lwjgl.opengl.GL11
 import ru.dbotthepony.kommons.util.getValue
 import ru.dbotthepony.kommons.util.setValue
+import ru.dbotthepony.kommons.math.RGBAColor
 import ru.dbotthepony.mc.otm.player.matteryPlayer
 import ru.dbotthepony.mc.otm.client.render.MGUIGraphics
 import ru.dbotthepony.mc.otm.client.moveMousePosScaled
+import ru.dbotthepony.mc.otm.client.render.LinePoint
 import ru.dbotthepony.mc.otm.client.render.WidgetLocation
 import ru.dbotthepony.mc.otm.client.render.Widgets18
 import ru.dbotthepony.mc.otm.client.render.translation
@@ -55,6 +57,7 @@ import ru.dbotthepony.mc.otm.menu.widget.LevelGaugeWidget
 import ru.dbotthepony.mc.otm.menu.widget.ProfiledLevelGaugeWidget
 import java.util.*
 import java.util.concurrent.CopyOnWriteArrayList
+import kotlin.collections.ArrayList
 import kotlin.collections.List
 import kotlin.collections.MutableSet
 import kotlin.collections.isNotEmpty
@@ -690,7 +693,13 @@ abstract class MatteryScreen<T : MatteryMenu>(menu: T, inventory: Inventory, tit
 		for (panel in panelsReversed) {
 			RenderSystem.depthFunc(GL11.GL_ALWAYS)
 			RenderSystem.setShaderColor(1f, 1f, 1f, 1f)
-			panel.render(wrap, mouseXf, mouseYf, partialTick)
+			val segments = ArrayList<LinePoint>()
+
+			panel.render(wrap, mouseXf, mouseYf, partialTick, segments)
+
+			if (segments.isNotEmpty()) {
+				wrap.drawLine(0.5f, RGBAColor.GOLD, segments)
+			}
 		}
 
 		if (!panelsReversed.any { it.updateCursor0() })

src/main/kotlin/ru/dbotthepony/mc/otm/client/screen/panels/DecimalHistoryChartPanel.kt

@@ -52,7 +52,7 @@ open class DecimalHistoryChartPanel<out S : MatteryScreen<*>>(
 
 			map[1f] = formatText(maximum)
 
-			for (cluster in chart.asIterable().clusterize(randomGenerator)) {
+			for (cluster in chart.asIterable().clusterize(random)) {
 				val perc = (cluster.center / maximum).toFloat()
 
 				if (map.keys.none { (it - perc).absoluteValue < 0.08f }) {

src/main/kotlin/ru/dbotthepony/mc/otm/client/screen/panels/EditablePanel.kt

@@ -11,94 +11,31 @@ import net.minecraft.client.gui.components.events.GuiEventListener
 import net.minecraft.client.gui.navigation.FocusNavigationEvent
 import net.minecraft.client.gui.navigation.ScreenRectangle
 import net.minecraft.client.gui.screens.Screen
-import net.minecraft.client.renderer.Rect2i
 import net.minecraft.network.chat.Component
-import net.minecraft.util.RandomSource
 import org.apache.logging.log4j.LogManager
+import ru.dbotthepony.kommons.math.RGBAColor
 import ru.dbotthepony.mc.otm.SystemTime
 import ru.dbotthepony.mc.otm.client.CursorType
 import ru.dbotthepony.mc.otm.client.render.MGUIGraphics
 import ru.dbotthepony.mc.otm.client.minecraft
 import ru.dbotthepony.mc.otm.client.moveMousePosScaled
+import ru.dbotthepony.mc.otm.client.render.LinePoint
 import ru.dbotthepony.mc.otm.client.render.RenderGravity
 import ru.dbotthepony.mc.otm.client.render.currentScissorRect
 import ru.dbotthepony.mc.otm.client.render.popScissorRect
 import ru.dbotthepony.mc.otm.client.render.pushScissorRect
 import ru.dbotthepony.mc.otm.client.screen.MatteryScreen
 import ru.dbotthepony.mc.otm.client.screen.panels.input.QueryUserPanel
-import ru.dbotthepony.mc.otm.core.RandomSource2Generator
 import ru.dbotthepony.mc.otm.core.collect.concatIterators
 import ru.dbotthepony.mc.otm.core.collect.flatMap
+import ru.dbotthepony.mc.otm.core.util.GJRAND64RandomSource
 import java.util.*
 import java.util.concurrent.CopyOnWriteArrayList
 import java.util.function.Predicate
-import java.util.random.RandomGenerator
 import kotlin.collections.ArrayList
 import kotlin.math.max
 import kotlin.math.roundToInt
 
-data class ScreenPos(val x: Float, val y: Float)
-
-data class DockProperty(val left: Float = 0f, val top: Float = 0f, val right: Float = 0f, val bottom: Float = 0f) {
-	val isEmpty get() = left == 0f && right == 0f && top == 0f && bottom == 0f
-	val horizontal get() = left + right
-	val vertical get() = top + bottom
-
-	operator fun plus(other: DockProperty): DockProperty {
-		return DockProperty(
-			left + other.left,
-			top + other.top,
-			right + other.right,
-			bottom + other.bottom
-		)
-	}
-
-	operator fun minus(other: DockProperty): DockProperty {
-		return DockProperty(
-			left - other.left,
-			top - other.top,
-			right - other.right,
-			bottom - other.bottom
-		)
-	}
-
-	operator fun plus(other: Float): DockProperty {
-		return DockProperty(
-			left + other,
-			top + other,
-			right + other,
-			bottom + other
-		)
-	}
-
-	operator fun minus(other: Float): DockProperty {
-		return DockProperty(
-			left - other,
-			top - other,
-			right - other,
-			bottom - other
-		)
-	}
-
-	companion object {
-		val EMPTY = DockProperty()
-	}
-}
-
-enum class Dock {
-	NONE, LEFT, RIGHT, TOP, BOTTOM, FILL
-}
-
-enum class DockResizeMode(val changeWidth: Boolean, val changeHeight: Boolean) {
-	ALL(true, true), NONE(false, false), WIDTH(true, false), HEIGHT(false, true)
-}
-
-data class Rect2f(val x: Float, val y: Float, val width: Float, val height: Float) {
-	fun toIntRect(): Rect2i {
-		return Rect2i(x.roundToInt(), y.roundToInt(), width.roundToInt(), height.roundToInt())
-	}
-}
-
 open class EditablePanel<out S : Screen>(
 	val screen: S,
 	parent: EditablePanel<*>?,
@@ -175,18 +112,14 @@ open class EditablePanel<out S : Screen>(
 		}
 	}
 
-	val random: RandomSource by lazy {
+	val random: GJRAND64RandomSource by lazy {
 		if (screen is MatteryScreen<*>) {
 			screen.menu.random
 		} else {
-			RandomSource.create()
+			GJRAND64RandomSource()
 		}
 	}
 
-	val randomGenerator: RandomGenerator by lazy {
-		RandomSource2Generator(random)
-	}
-
 	/**
 	 * Bigger values means lesser priority while docking, rendering and processing inputs.
 	 */
@@ -350,11 +283,13 @@ open class EditablePanel<out S : Screen>(
 
 						if (visibleChildrenParent?.contains(this) == false) {
 							visibleChildrenParent.add(this)
+							parent?.invalidateChildrenSorting()
 							parent?.layoutInvalidated = true
 						}
 					} else {
 						if (visibleChildrenParent?.contains(this) == true) {
 							visibleChildrenParent.remove(this)
+							parent?.invalidateChildrenSorting()
 							parent?.layoutInvalidated = true
 						}
 					}
@@ -843,6 +778,12 @@ open class EditablePanel<out S : Screen>(
 		childrenSortingInvalidated = true
 	}
 
+	protected open fun onChildrenAdded(child: EditablePanel<*>) {}
+	protected open fun onChildrenRemoved(child: EditablePanel<*>) {}
+
+	protected open fun onParented(parent: EditablePanel<*>) {}
+	protected open fun onUnParented(parent: EditablePanel<*>) {}
+
 	private fun onParent(child: EditablePanel<*>) {
 		if (childrenInternal.contains(child)) throw IllegalStateException("Already containing $child")
 		childrenInternal.add(child)
@@ -860,11 +801,15 @@ open class EditablePanel<out S : Screen>(
 			else
 				updateVisibility = true
 		}
+
+		onChildrenAdded(child)
+		child.onParented(this)
 	}
 
 	private fun onUnParent(child: EditablePanel<*>) {
 		val indexOf = childrenInternal.indexOf(child)
 		if (indexOf == -1) throw IllegalStateException("Already not containing $child")
+		child.onUnParented(this)
 		childrenInternal.removeAt(indexOf)
 		invalidateChildrenSorting()
 
@@ -876,6 +821,8 @@ open class EditablePanel<out S : Screen>(
 		if (child.isVisible() != isVisible()) {
 			updateVisible()
 		}
+
+		onChildrenRemoved(child)
 	}
 
 	private fun sortChildren() {
@@ -944,12 +891,11 @@ open class EditablePanel<out S : Screen>(
 		}
 	}
 
-	fun render(graphics: MGUIGraphics, mouseX: Float, mouseY: Float, partialTick: Float) {
+	fun render(graphics: MGUIGraphics, mouseX: Float, mouseY: Float, partialTick: Float, debugSegments: MutableList<LinePoint>) {
 		once = true
 
-		if (!isVisible()) {
+		if (!isVisible())
 			return
-		}
 
 		val poseStack = graphics.pose
 
@@ -997,12 +943,19 @@ open class EditablePanel<out S : Screen>(
 			child.absoluteX = absoluteX + child.x + xOffset
 			child.absoluteY = absoluteY + child.y + yOffset
 
-			child.render(graphics, mouseX, mouseY, partialTick)
+			child.render(graphics, mouseX, mouseY, partialTick, debugSegments)
 		}
 
 		if (scissor) {
 			popScissorRect()
 		}
+
+		if (minecraft.entityRenderDispatcher.shouldRenderHitBoxes()) {
+			debugSegments.add(LinePoint(absoluteX, absoluteY, 					absoluteX + width, absoluteY))
+			debugSegments.add(LinePoint(absoluteX + width, absoluteY, 			absoluteX + width, absoluteY + height))
+			debugSegments.add(LinePoint(absoluteX + width, absoluteY + height, 	absoluteX, absoluteY + height))
+			debugSegments.add(LinePoint(absoluteX, absoluteY + height, 			absoluteX, absoluteY))
+		}
 	}
 
 	fun updateCursor0(): Boolean {
@@ -1508,6 +1461,7 @@ open class EditablePanel<out S : Screen>(
 
 			if (old != new) {
 				child.visibilityChanges(new, old)
+				child.invalidateChildrenSorting()
 			}
 
 			child.updateVisible()

src/main/kotlin/ru/dbotthepony/mc/otm/client/screen/panels/Panel2Widget.kt

@@ -4,6 +4,8 @@ import net.minecraft.client.gui.GuiGraphics
 import net.minecraft.client.gui.components.Renderable
 import net.minecraft.client.gui.components.events.GuiEventListener
 import net.minecraft.client.gui.screens.Screen
+import ru.dbotthepony.kommons.math.RGBAColor
+import ru.dbotthepony.mc.otm.client.render.LinePoint
 import ru.dbotthepony.mc.otm.client.render.MGUIGraphics
 
 // before 1.19.3 Renderable was Widget
@@ -21,11 +23,17 @@ class Panel2Widget<out S: Screen, out P : EditablePanel<S>>(
 		val yFloat = mouseY.toFloat()
 
 		val wrap = MGUIGraphics(graphics)
+		val segments = ArrayList<LinePoint>()
 
 		panel.tickHovered0(xFloat, yFloat, false)
 		panel.tickHovered1()
 		panel.tickHovered2()
-		panel.render(wrap, xFloat, yFloat, partialTick)
+		panel.render(wrap, xFloat, yFloat, partialTick, segments)
+
+		if (segments.isNotEmpty()) {
+			wrap.drawLine(0.5f, RGBAColor.GOLD, segments)
+		}
+
 		panel.renderTooltips(wrap, xFloat, yFloat, partialTick)
 	}
 

src/main/kotlin/ru/dbotthepony/mc/otm/client/screen/panels/Types.kt

@@ -0,0 +1,115 @@
+package ru.dbotthepony.mc.otm.client.screen.panels
+
+import net.minecraft.client.renderer.Rect2i
+import kotlin.math.roundToInt
+
+data class ScreenPos(val x: Float, val y: Float)
+
+data class DockProperty(val left: Float = 0f, val top: Float = 0f, val right: Float = 0f, val bottom: Float = 0f) {
+	val isEmpty get() = left == 0f && right == 0f && top == 0f && bottom == 0f
+	val horizontal get() = left + right
+	val vertical get() = top + bottom
+
+	operator fun plus(other: DockProperty): DockProperty {
+		return DockProperty(
+			left + other.left,
+			top + other.top,
+			right + other.right,
+			bottom + other.bottom
+		)
+	}
+
+	operator fun minus(other: DockProperty): DockProperty {
+		return DockProperty(
+			left - other.left,
+			top - other.top,
+			right - other.right,
+			bottom - other.bottom
+		)
+	}
+
+	operator fun plus(other: Float): DockProperty {
+		return DockProperty(
+			left + other,
+			top + other,
+			right + other,
+			bottom + other
+		)
+	}
+
+	operator fun minus(other: Float): DockProperty {
+		return DockProperty(
+			left - other,
+			top - other,
+			right - other,
+			bottom - other
+		)
+	}
+
+	companion object {
+		val EMPTY = DockProperty()
+
+		@JvmStatic
+		fun all(value: Float): DockProperty {
+			return DockProperty(value, value, value, value)
+		}
+
+		@JvmStatic
+		@JvmOverloads
+		fun topLeft(top: Float, left: Float = top): DockProperty {
+			return DockProperty(left = left, top = top)
+		}
+
+		@JvmStatic
+		fun left(value: Float): DockProperty {
+			return DockProperty(left = value)
+		}
+
+		@JvmStatic
+		@JvmOverloads
+		fun topRight(top: Float, right: Float = top): DockProperty {
+			return DockProperty(right = right, top = top)
+		}
+
+		@JvmStatic
+		fun right(value: Float): DockProperty {
+			return DockProperty(right = value)
+		}
+
+		@JvmStatic
+		fun top(value: Float): DockProperty {
+			return DockProperty(top = value)
+		}
+
+		@JvmStatic
+		@JvmOverloads
+		fun bottomLeft(bottom: Float, left: Float = bottom): DockProperty {
+			return DockProperty(left = left, bottom = bottom)
+		}
+
+		@JvmStatic
+		@JvmOverloads
+		fun bottomRight(bottom: Float, right: Float = bottom): DockProperty {
+			return DockProperty(right = right, bottom = bottom)
+		}
+
+		@JvmStatic
+		fun bottom(value: Float): DockProperty {
+			return DockProperty(bottom = value)
+		}
+	}
+}
+
+enum class Dock {
+	NONE, LEFT, RIGHT, TOP, BOTTOM, FILL
+}
+
+enum class DockResizeMode(val changeWidth: Boolean, val changeHeight: Boolean) {
+	ALL(true, true), NONE(false, false), WIDTH(true, false), HEIGHT(false, true)
+}
+
+data class Rect2f(val x: Float, val y: Float, val width: Float, val height: Float) {
+	fun toIntRect(): Rect2i {
+		return Rect2i(x.roundToInt(), y.roundToInt(), width.roundToInt(), height.roundToInt())
+	}
+}

src/main/kotlin/ru/dbotthepony/mc/otm/client/screen/panels/util/GridPanel.kt

@@ -7,6 +7,9 @@ import ru.dbotthepony.mc.otm.client.screen.panels.EditablePanel
 import ru.dbotthepony.mc.otm.client.screen.panels.slot.AbstractSlotPanel
 import ru.dbotthepony.mc.otm.core.collect.filter
 import ru.dbotthepony.mc.otm.core.collect.maybe
+import java.util.stream.IntStream
+import java.util.stream.Stream
+import kotlin.math.max
 
 open class GridPanel<out S : Screen>(
 	screen: S,
@@ -20,25 +23,150 @@ open class GridPanel<out S : Screen>(
 ) : EditablePanel<S>(screen, parent, x, y, width, height) {
 	var columns: Int = columns
 		set(value) {
-			field = value
-			invalidateLayout()
+			if (field != value) {
+				field = value
+				invalidateLayout()
+			}
 		}
 
 	var rows: Int = rows
 		set(value) {
-			field = value
-			invalidateLayout()
+			if (field != value) {
+				field = value
+				invalidateLayout()
+			}
 		}
 
 	var gravity: RenderGravity = RenderGravity.CENTER_CENTER
 		set(value) {
-			field = value
-			invalidateLayout()
+			if (field != value) {
+				field = value
+				invalidateLayout()
+			}
 		}
 
+	var layout: Layout = Layout.TOP_LEFT
+		set(value) {
+			if (field != value) {
+				field = value
+				invalidateLayout()
+			}
+		}
+
+	var columnMajorOrder = false
+		set(value) {
+			if (field != value) {
+				field = value
+				invalidateLayout()
+			}
+		}
+
+	enum class Layout {
+		TOP_LEFT {
+			override fun get(
+				list: List<EditablePanel<*>>,
+				row: Int,
+				column: Int,
+				rows: Int,
+				columns: Int,
+				columnMajorOrder: Boolean
+			): EditablePanel<*>? {
+				if (columnMajorOrder) {
+					return list.getOrNull(row + column * rows)
+				} else {
+					return list.getOrNull(column + row * columns)
+				}
+			}
+		},
+
+		TOP_RIGHT {
+			override fun get(
+				list: List<EditablePanel<*>>,
+				row: Int,
+				column: Int,
+				rows: Int,
+				columns: Int,
+				columnMajorOrder: Boolean
+			): EditablePanel<*>? {
+				if (columnMajorOrder) {
+					return list.getOrNull(row + (columns - column - 1) * rows)
+				} else {
+					return list.getOrNull((columns - column - 1) + row * columns)
+				}
+			}
+		},
+
+		BOTTOM_LEFT {
+			override fun get(
+				list: List<EditablePanel<*>>,
+				row: Int,
+				column: Int,
+				rows: Int,
+				columns: Int,
+				columnMajorOrder: Boolean
+			): EditablePanel<*>? {
+				if (columnMajorOrder) {
+					return list.getOrNull((rows - row - 1) + column * rows)
+				} else {
+					return list.getOrNull(column + (rows - row - 1) * columns)
+				}
+			}
+		},
+
+		BOTTOM_RIGHT {
+			override fun get(
+				list: List<EditablePanel<*>>,
+				row: Int,
+				column: Int,
+				rows: Int,
+				columns: Int,
+				columnMajorOrder: Boolean
+			): EditablePanel<*>? {
+				if (columnMajorOrder) {
+					return list.getOrNull((rows - row - 1) + (columns - column - 1) * rows)
+				} else {
+					return list.getOrNull((columns - column - 1) + (rows - row - 1) * columns)
+				}
+			}
+		};
+
+		abstract fun get(list: List<EditablePanel<*>>, row: Int, column: Int, rows: Int, columns: Int, columnMajorOrder: Boolean): EditablePanel<*>?
+	}
+
+	override fun sizeToContents() {
+		if (visibleChildren.isEmpty()) {
+			// nothing to size against
+			return
+		}
+
+		visibleChildren.forEach { it.sizeToContents() }
+
+		var width = 0f
+		var height = 0f
+
+		val children = visibleChildren.filter { it.dock == Dock.NONE }
+
+		for (row in 0 until rows) {
+			var maxHeight = 0f
+			var rowWidth = 0f
+
+			for (column in 0 until columns) {
+				val nextChild = layout.get(children, row, column, rows, columns, columnMajorOrder) ?: continue
+				rowWidth += nextChild.width + nextChild.dockMargin.horizontal
+				maxHeight = max(maxHeight, nextChild.height + nextChild.dockMargin.vertical)
+			}
+
+			height += maxHeight
+			width = max(width, rowWidth)
+		}
+
+		this.width = width
+		this.height = height
+	}
+
 	override fun performLayout() {
 		super.performLayout()
-		var children = visibleChildren.iterator().filter { it.dock == Dock.NONE }
+		val children = visibleChildren.filter { it.dock == Dock.NONE }
 
 		var totalWidth = 0f
 		var totalHeight = 0f
@@ -48,7 +176,7 @@ open class GridPanel<out S : Screen>(
 			var width = 0f
 
 			for (column in 0 until columns) {
-				val child = children.maybe() ?: break
+				val child = layout.get(children, row, column, rows, columns, columnMajorOrder) ?: continue
 				width += child.dockedWidth
 				maxHeight = maxHeight.coerceAtLeast(child.dockedHeight)
 			}
@@ -59,7 +187,6 @@ open class GridPanel<out S : Screen>(
 
 		val alignX = gravity.repositionX(width, totalWidth)
 		val alignY = gravity.repositionY(height, totalHeight)
-		children = visibleChildren.iterator().filter { it.dock == Dock.NONE }
 
 		totalWidth = 0f
 		totalHeight = 0f
@@ -69,7 +196,7 @@ open class GridPanel<out S : Screen>(
 			var width = 0f
 
 			for (column in 0 until columns) {
-				val child = children.maybe() ?: break
+				val child = layout.get(children, row, column, rows, columns, columnMajorOrder) ?: continue
 				child.x = alignX + width
 				child.y = alignY + totalHeight
 				width += child.dockedWidth

src/main/kotlin/ru/dbotthepony/mc/otm/client/screen/tech/AndroidStationScreen.kt

@@ -7,6 +7,7 @@ import it.unimi.dsi.fastutil.ints.Int2ObjectOpenHashMap
 import net.minecraft.ChatFormatting
 import net.minecraft.client.Minecraft
 import net.minecraft.network.chat.Component
+import net.minecraft.util.RandomSource
 import net.minecraft.world.entity.player.Inventory
 import net.minecraft.world.item.ItemStack
 import net.neoforged.neoforge.network.PacketDistributor
@@ -34,6 +35,7 @@ import ru.dbotthepony.mc.otm.config.MachinesConfig
 import ru.dbotthepony.kommons.math.RGBAColor
 import ru.dbotthepony.mc.otm.player.matteryPlayer
 import ru.dbotthepony.mc.otm.client.screen.panels.button.BooleanButtonPanel
+import ru.dbotthepony.mc.otm.core.nextFloat
 import ru.dbotthepony.mc.otm.menu.tech.AndroidStationMenu
 import ru.dbotthepony.mc.otm.network.AndroidResearchRequestPacket
 import java.util.*
@@ -540,14 +542,14 @@ class AndroidStationScreen(p_97741_: AndroidStationMenu, p_97742_: Inventory, p_
 
 				if (isPreview && !layoutInvalidated) {
 					if (firstTick) {
-						scroller.init.invoke(this, randomGenerator)
+						scroller.init.invoke(this, random)
 					}
 
-					val status = scroller.scroll.invoke(this, randomGenerator)
+					val status = scroller.scroll.invoke(this, random)
 
 					if (!status) {
 						scroller = PreviewScrollers.entries.let { it[random.nextInt(it.size)] }
-						scroller.init.invoke(this, randomGenerator)
+						scroller.init.invoke(this, random)
 					}
 				}
 			}

src/main/kotlin/ru/dbotthepony/mc/otm/core/Ext.kt

@@ -10,6 +10,7 @@ import com.google.common.collect.ImmutableSet
 import com.google.gson.JsonElement
 import com.google.gson.JsonObject
 import com.google.gson.JsonPrimitive
+import it.unimi.dsi.fastutil.ints.IntList
 import it.unimi.dsi.fastutil.objects.ObjectComparators
 import net.minecraft.Util
 import net.minecraft.core.BlockPos
@@ -199,6 +200,15 @@ fun IntArray.shuffle(random: RandomSource): IntArray {
 	return this
 }
 
+fun <L : IntList> L.shuffle(random: RandomSource): L {
+	for (i in lastIndex downTo 1) {
+		val j = random.nextInt(i + 1)
+		set(j, set(i, getInt(j)))
+	}
+
+	return this
+}
+
 fun <T, L : MutableList<T>> L.shuffle(random: RandomSource): L {
 	Util.shuffle(this, random)
 	return this
@@ -662,3 +672,21 @@ fun RandomSource.nextNormalDoubles(stddev: Double, mean: Double): DoublePair {
 fun RandomSource.nextNormalDouble(stddev: Double, mean: Double): Double {
 	return nextGaussian() * stddev + mean
 }
+
+fun RandomSource.nextFloat(min: Float, max: Float): Float {
+	if (this is RandomGenerator)
+		return nextFloat(min, max)
+
+	require(max >= min) { "Min is bigger than max: $min vs $max" }
+	if (min == max) return min
+	return min + nextFloat() * (max - min)
+}
+
+fun RandomSource.nextDouble(min: Double, max: Double): Double {
+	if (this is RandomGenerator)
+		return nextDouble(min, max)
+
+	require(max >= min) { "Min is bigger than max: $min vs $max" }
+	if (min == max) return min
+	return min + nextDouble() * (max - min)
+}

src/main/kotlin/ru/dbotthepony/mc/otm/core/math/Clustering.kt

@@ -1,6 +1,7 @@
 package ru.dbotthepony.mc.otm.core.math
 
 import it.unimi.dsi.fastutil.objects.ObjectArrayList
+import net.minecraft.util.RandomSource
 import ru.dbotthepony.mc.otm.core.random
 import java.util.random.RandomGenerator
 import kotlin.math.min
@@ -88,7 +89,7 @@ private class MutableCluster<V : Comparable<V>>(var center: V) {
 }
 
 private fun <V : Comparable<V>> Iterable<V>.clusterize(
-	random: RandomGenerator,
+	random: RandomSource,
 	initialClusters: Int = 1,
 	zeroBound: Boolean = false,
 	identity: V,
@@ -202,7 +203,7 @@ private fun <V : Comparable<V>> Iterable<V>.clusterize(
 // TODO: could use some tweaking
 private val DECIMAL_ERROR_TOLERANCE = Decimal("0.02")
 
-fun Iterable<Decimal>.clusterize(random: RandomGenerator, clusters: Int? = null, zeroBound: Boolean = false): List<Cluster<Decimal>> {
+fun Iterable<Decimal>.clusterize(random: RandomSource, clusters: Int? = null, zeroBound: Boolean = false): List<Cluster<Decimal>> {
 	return clusterize(random, clusters ?: 1, zeroBound, Decimal.ZERO, Decimal::plus, Decimal::minus, Decimal::div, Decimal::absoluteValue) { min, max, error ->
 		if (clusters != null)
 			false

src/main/kotlin/ru/dbotthepony/mc/otm/core/util/BlockLootTableHolder.kt

@@ -0,0 +1,147 @@
+package ru.dbotthepony.mc.otm.core.util
+
+import net.minecraft.advancements.CriteriaTriggers
+import net.minecraft.core.BlockPos
+import net.minecraft.core.HolderLookup
+import net.minecraft.core.registries.Registries
+import net.minecraft.nbt.CompoundTag
+import net.minecraft.nbt.Tag
+import net.minecraft.resources.ResourceKey
+import net.minecraft.resources.ResourceLocation
+import net.minecraft.server.level.ServerLevel
+import net.minecraft.server.level.ServerPlayer
+import net.minecraft.util.RandomSource
+import net.minecraft.world.Container
+import net.minecraft.world.Containers
+import net.minecraft.world.entity.player.Player
+import net.minecraft.world.item.ItemStack
+import net.minecraft.world.level.block.entity.BlockEntity
+import net.minecraft.world.level.block.state.BlockState
+import net.minecraft.world.level.storage.loot.LootParams
+import net.minecraft.world.level.storage.loot.LootTable
+import net.minecraft.world.level.storage.loot.parameters.LootContextParamSets
+import net.minecraft.world.level.storage.loot.parameters.LootContextParams
+import net.minecraft.world.phys.Vec3
+import ru.dbotthepony.mc.otm.block.entity.MatteryBlockEntity.Companion.LOOT_TABLE_KEY
+import ru.dbotthepony.mc.otm.block.entity.MatteryBlockEntity.Companion.LOOT_TABLE_SEED_KEY
+import ru.dbotthepony.mc.otm.core.getBlockEntityNow
+import ru.dbotthepony.mc.otm.core.otmRandom
+
+class BlockLootTableHolder(private val listener: Runnable = Runnable {  }) {
+	private var ignoreListener = false
+
+	var lootTable: ResourceKey<LootTable>? = null
+		set(value) {
+			if (field != value) {
+				field = value
+				if (!ignoreListener) listener.run()
+			}
+		}
+
+	var lootTableSeed: Long? = null
+		set(value) {
+			if (field != value) {
+				field = value
+				if (!ignoreListener) listener.run()
+			}
+		}
+
+	var lootTableRounds: Int? = null
+		set(value) {
+			if (field != value) {
+				field = value
+				if (!ignoreListener) listener.run()
+			}
+		}
+
+	fun save(nbt: CompoundTag, registry: HolderLookup.Provider) {
+		try {
+			ignoreListener = true
+
+			if (lootTable != null) {
+				nbt.putString(LOOT_TABLE_KEY, lootTable!!.location().toString())
+
+				if (lootTableSeed != null)
+					nbt.putLong(LOOT_TABLE_SEED_KEY, lootTableSeed!!)
+
+				if (lootTableRounds != null)
+					nbt.putInt("LootRounds", lootTableRounds!!)
+			}
+		} finally {
+			ignoreListener = false
+		}
+	}
+
+	fun load(nbt: CompoundTag, registry: HolderLookup.Provider) {
+		try {
+			ignoreListener = true
+
+			if (nbt.contains(LOOT_TABLE_KEY, Tag.TAG_STRING.toInt())) {
+				lootTable = ResourceLocation.tryParse(nbt.getString(LOOT_TABLE_KEY))?.let { ResourceKey.create(Registries.LOOT_TABLE, it) }
+				lootTableSeed = if (nbt.contains(LOOT_TABLE_SEED_KEY, Tag.TAG_LONG.toInt())) nbt.getLong(LOOT_TABLE_SEED_KEY) else null
+				lootTableRounds = if (nbt.contains("LootRounds", Tag.TAG_INT.toInt())) nbt.getInt("LootRounds") else null
+
+				if (lootTableRounds != null && lootTableRounds!! < 0)
+					lootTableRounds = null
+			}
+		} finally {
+			ignoreListener = false
+		}
+	}
+
+	fun lookup(level: ServerLevel): LootTable {
+		val lootTable = lootTable ?: return LootTable.EMPTY
+		return level.server.reloadableRegistries().getLootTable(lootTable)
+	}
+
+	private fun selectRandom(overrideSeed: Long?, fallback: RandomSource): RandomSource {
+		val lootTableSeed = overrideSeed ?: lootTableSeed
+		return if (lootTableSeed == null) fallback else GJRAND64RandomSource(lootTableSeed)
+	}
+
+	fun getItems(params: LootParams, level: ServerLevel, overrideSeed: Long? = null, rounds: Int? = null): MutableList<ItemStack> {
+		return lookup(level).getRandomItems(params, selectRandom(overrideSeed, level.otmRandom), rounds ?: lootTableRounds ?: 1)
+	}
+
+	fun getItems(params: LootParams.Builder, blockState: BlockState, overrideSeed: Long? = null, rounds: Int? = null): MutableList<ItemStack> {
+		val level = params.level
+		val create = params.withParameter(LootContextParams.BLOCK_STATE, blockState).create(LootContextParamSets.BLOCK)
+		return getItems(create, level, overrideSeed, rounds)
+	}
+
+	fun fill(level: ServerLevel, blockPos: BlockPos, container: Container, ply: Player? = null, blockEntity: BlockEntity? = level.getBlockEntityNow(blockPos), overrideSeed: Long? = null, dropContents: Boolean = true, rounds: Int? = null) {
+		if (rounds == 0)
+			return
+		else if (rounds != null && rounds < 0)
+			throw IllegalArgumentException("Negative amount of rounds: $rounds")
+
+		val lootTable = lootTable ?: return
+		val server = level.server
+		val loot = server.reloadableRegistries().getLootTable(lootTable)
+
+		if (ply is ServerPlayer)
+			CriteriaTriggers.GENERATE_LOOT.trigger(ply, lootTable)
+
+		val params = LootParams.Builder(level)
+			.withParameter(LootContextParams.ORIGIN, Vec3.atCenterOf(blockPos))
+
+		if (ply != null) {
+			params
+				.withLuck(ply.luck)
+				.withParameter(LootContextParams.THIS_ENTITY, ply)
+		}
+
+		if (blockEntity != null)
+			params.withParameter(LootContextParams.BLOCK_ENTITY, blockEntity)
+
+		if (dropContents)
+			Containers.dropContents(level, blockPos, container)
+
+		loot.fill(params.create(LootContextParamSets.CHEST), selectRandom(overrideSeed, level.otmRandom), container, rounds ?: lootTableRounds ?: 1)
+	}
+
+	fun clear() {
+		lootTable = null
+		lootTableSeed = null
+	}
+}

src/main/kotlin/ru/dbotthepony/mc/otm/core/util/Formatting.kt

@@ -9,6 +9,7 @@ import net.minecraft.network.chat.FormattedText
 import net.minecraft.network.chat.MutableComponent
 import net.minecraft.world.inventory.tooltip.TooltipComponent
 import ru.dbotthepony.kommons.math.RGBAColor
+import ru.dbotthepony.mc.otm.THREAD_LOCAL_RANDOM
 import ru.dbotthepony.mc.otm.client.render.ChartLevelLabels
 import ru.dbotthepony.mc.otm.client.render.ChartTooltipElement
 import ru.dbotthepony.mc.otm.config.ClientConfig
@@ -453,10 +454,8 @@ private fun formatHistoryChart(
 			labelNames[0f] = (-maxTransferred).formatSiComponent(suffix, decimals, formatAsReadable = verbose, bias = bias)
 			labelNames[1f] = maxReceived.formatSiComponent(suffix, decimals, formatAsReadable = verbose, bias = bias)
 
-			val rand = java.util.Random()
-
 			if (maxTransferred.isNotZero && transferredMult > 0.2f) {
-				for (cluster in widget.transferred.clusterize(rand, zeroBound = true)) {
+				for (cluster in widget.transferred.clusterize(THREAD_LOCAL_RANDOM, zeroBound = true)) {
 					val perc = (cluster.center / maxTransferred).toFloat() * transferredMult
 
 					if (labelNames.keys.none { (it - perc).absoluteValue < 0.08f })
@@ -465,7 +464,7 @@ private fun formatHistoryChart(
 			}
 
 			if (maxReceived.isNotZero && receivedMult > 0.2f) {
-				for (cluster in widget.received.clusterize(rand, zeroBound = true)) {
+				for (cluster in widget.received.clusterize(THREAD_LOCAL_RANDOM, zeroBound = true)) {
 					val perc = zero + (cluster.center / maxReceived).toFloat() * receivedMult
 
 					if (labelNames.keys.none { (it - perc).absoluteValue < 0.08f })
@@ -473,7 +472,7 @@ private fun formatHistoryChart(
 				}
 			}
 
-			val clusters = diff.asIterable().clusterize(rand, zeroBound = true)
+			val clusters = diff.asIterable().clusterize(THREAD_LOCAL_RANDOM, zeroBound = true)
 
 			for (cluster in clusters) {
 				val perc: Float

src/main/kotlin/ru/dbotthepony/mc/otm/core/util/GJRAND64RandomSource.kt

@@ -2,15 +2,12 @@ package ru.dbotthepony.mc.otm.core.util
 
 import net.minecraft.util.Mth
 import net.minecraft.util.RandomSource
-import net.minecraft.world.level.levelgen.MarsagliaPolarGaussian
 import net.minecraft.world.level.levelgen.PositionalRandomFactory
 import net.minecraft.world.level.levelgen.RandomSupport
 import ru.dbotthepony.kommons.random.GJRAND64Random
 import java.lang.StringBuilder
 
 class GJRAND64RandomSource : GJRAND64Random, IRandomSourceGenerator {
-	private val gaussian = MarsagliaPolarGaussian(this)
-
 	constructor() : super(RandomSupport.generateUniqueSeed(), RandomSupport.generateUniqueSeed())
 	constructor(seed: Long) : super(seed)
 	constructor(seed0: Long, seed1: Long) : super(seed0, seed1)
@@ -19,10 +16,6 @@ class GJRAND64RandomSource : GJRAND64Random, IRandomSourceGenerator {
 		return nextLong().ushr(32).toInt()
 	}
 
-	override fun nextGaussian(): Double {
-		return gaussian.nextGaussian()
-	}
-
 	override fun fork(): RandomSource {
 		return GJRAND64RandomSource(nextLong(), nextLong())
 	}
@@ -33,7 +26,6 @@ class GJRAND64RandomSource : GJRAND64Random, IRandomSourceGenerator {
 
 	override fun setSeed(seed: Long) {
 		reinitialize(seed)
-		gaussian.reset()
 	}
 
 	class Positional(private val seed0: Long, private val seed1: Long) : PositionalRandomFactory {

src/main/kotlin/ru/dbotthepony/mc/otm/core/util/IRandomSourceGenerator.kt

@@ -26,5 +26,7 @@ interface IRandomSourceGenerator : RandomSource, RandomGenerator {
 		return super.nextDouble()
 	}
 
-	override fun nextGaussian(): Double
+	override fun nextGaussian(): Double {
+		return super.nextGaussian()
+	}
 }

src/main/kotlin/ru/dbotthepony/mc/otm/core/util/LootTableUtils.kt

@@ -0,0 +1,132 @@
+package ru.dbotthepony.mc.otm.core.util
+
+import it.unimi.dsi.fastutil.ints.IntArrayList
+import net.minecraft.util.Mth
+import net.minecraft.util.RandomSource
+import net.minecraft.world.Container
+import net.minecraft.world.item.Item
+import net.minecraft.world.item.ItemStack
+import net.minecraft.world.level.storage.loot.LootParams
+import net.minecraft.world.level.storage.loot.LootTable
+import org.apache.logging.log4j.LogManager
+import ru.dbotthepony.mc.otm.container.get
+import ru.dbotthepony.mc.otm.container.set
+import ru.dbotthepony.mc.otm.core.isNotEmpty
+import ru.dbotthepony.mc.otm.core.shuffle
+import java.util.stream.Collectors
+import java.util.stream.IntStream
+import kotlin.math.min
+
+private val LOGGER = LogManager.getLogger()
+
+private class Bucket {
+	val items = ArrayList<ItemStack>()
+	var last = 0
+
+	fun add(item: ItemStack) {
+		if (item.isEmpty) return
+
+		for (i in last until items.size) {
+			val existing = items[i]
+			var available = existing.maxStackSize - existing.count
+
+			if (available > 0 && ItemStack.isSameItemSameComponents(existing, item)) {
+				val diff = min(available, item.count)
+				existing.grow(diff)
+				item.shrink(diff)
+				available -= diff
+
+				if (available == 0 && i == last)
+					last++
+
+				if (item.isEmpty)
+					return
+			}
+		}
+
+		if (item.isNotEmpty) {
+			items.add(item)
+		}
+	}
+}
+
+private fun recombine(lists: Collection<Collection<ItemStack>>): MutableList<ItemStack> {
+	val result = HashMap<Item, Bucket>()
+
+	for (list in lists)
+		for (item in list)
+			result.computeIfAbsent(item.item) { Bucket() }.add(item)
+
+	return result.values
+		.stream()
+		.flatMap { it.items.stream() }
+		.collect(Collectors.toCollection(::ArrayList))
+}
+
+fun LootTable.getRandomItems(params: LootParams, random: RandomSource, rounds: Int = 1): MutableList<ItemStack> {
+	if (rounds == 0) {
+		return ArrayList()
+	} else if (rounds == 1) {
+		return getRandomItems(params, random)
+	} else {
+		return recombine(IntStream.range(0, rounds).mapToObj { getRandomItems(params, random) }.toList())
+	}
+}
+
+private fun shuffle(items: MutableList<ItemStack>, emptySlotCount: Int, random: RandomSource) {
+	val pool = ArrayList<ItemStack>(items)
+	items.clear()
+
+	while (items.size + pool.size < emptySlotCount && pool.isNotEmpty()) {
+		val select = pool.removeAt(random.nextInt(pool.size))
+		val maxStackSize = select.maxStackSize
+
+		if (maxStackSize == 1 || select.count == 1) {
+			items.add(select)
+		} else {
+			val split = select.split(Mth.nextInt(random, 1, select.count / 2))
+
+			if (split.count > 1 && random.nextBoolean())
+				pool.add(split)
+			else
+				items.add(split)
+
+			if (select.count > 1 && random.nextBoolean())
+				pool.add(select)
+			else
+				items.add(select)
+		}
+	}
+
+	items.addAll(pool)
+	items.shuffle(random)
+}
+
+fun LootTable.fill(params: LootParams, random: RandomSource, container: Container, rounds: Int = 1) {
+	val emptySlots = IntArrayList()
+
+	for (i in 0 until container.containerSize)
+		if (container[i].isEmpty)
+			emptySlots.add(i)
+
+	emptySlots.shuffle(random)
+
+	if (emptySlots.isEmpty) {
+		LOGGER.warn("Tried to fill container with no empty slots")
+		return
+	}
+
+	val items = getRandomItems(params, random, rounds)
+	shuffle(items, emptySlots.size, random)
+
+	val slotItr = emptySlots.iterator()
+	val itemItr = items.iterator()
+
+	while (slotItr.hasNext() && itemItr.hasNext()) {
+		container[slotItr.nextInt()] = itemItr.next()
+	}
+
+	if (itemItr.hasNext()) {
+		LOGGER.warn("Tried to overfill a container")
+	}
+}

src/main/kotlin/ru/dbotthepony/mc/otm/item/exopack/AbstractExopackSlotUpgradeItem.kt

@@ -20,6 +20,9 @@ import ru.dbotthepony.mc.otm.client.minecraft
 import ru.dbotthepony.mc.otm.core.TranslatableComponent
 import ru.dbotthepony.mc.otm.core.isExplosion
 import ru.dbotthepony.mc.otm.core.isFire
+import ru.dbotthepony.mc.otm.core.isNotEmpty
+import ru.dbotthepony.mc.otm.core.nextUUID
+import ru.dbotthepony.mc.otm.core.otmRandom
 import ru.dbotthepony.mc.otm.registry.game.MItems
 import ru.dbotthepony.mc.otm.runIfClient
 import ru.dbotthepony.mc.otm.triggers.ExopackSlotsExpandedTrigger
@@ -35,7 +38,7 @@ abstract class AbstractExopackSlotUpgradeItem(properties: Properties = defaultPr
 	}
 
 	override fun getUseDuration(p_41454_: ItemStack, p_344979_: LivingEntity): Int {
-		return 30
+		return 20
 	}
 
 	override fun appendHoverText(
@@ -76,7 +79,7 @@ abstract class AbstractExopackSlotUpgradeItem(properties: Properties = defaultPr
 	}
 
 	override fun use(p_41432_: Level, player: Player, hand: InteractionHand): InteractionResultHolder<ItemStack> {
-		val matteryPlayer = player.matteryPlayer ?: return super.use(p_41432_, player, hand)
+		val matteryPlayer = player.matteryPlayer
 
 		val uuid = uuid(player.getItemInHand(hand))
 
@@ -98,25 +101,32 @@ abstract class AbstractExopackSlotUpgradeItem(properties: Properties = defaultPr
 			return super.finishUsingItem(itemStack, level, player)
 		}
 
-		if (!player.abilities.instabuild)
-			itemStack.shrink(1)
+		var allowedUses = itemStack.count
 
-		if (player is ServerPlayer) {
-			if (uuid != null) {
-				if (ServerConfig.INFINITE_EXOSUIT_UPGRADES && uuid in matteryPlayer.exopackSlotModifier) {
-					matteryPlayer.exopackSlotModifier[UUID.randomUUID()] = slotCount
+		while (allowedUses > 0) {
+			if (!player.abilities.instabuild)
+				itemStack.shrink(1)
+
+			allowedUses--
+
+			if (player is ServerPlayer) {
+				if (uuid != null) {
+					if (ServerConfig.INFINITE_EXOSUIT_UPGRADES && uuid in matteryPlayer.exopackSlotModifier) {
+						matteryPlayer.exopackSlotModifier[level.otmRandom.nextUUID()] = slotCount
+					} else {
+						matteryPlayer.exopackSlotModifier[uuid] = slotCount
+						allowedUses = 0
+					}
 				} else {
-					matteryPlayer.exopackSlotModifier[uuid] = slotCount
+					matteryPlayer.exopackSlotModifier[level.otmRandom.nextUUID()] = slotCount
 				}
-			} else {
-				matteryPlayer.exopackSlotModifier[UUID.randomUUID()] = slotCount
-			}
 
-			ExopackSlotsExpandedTrigger.trigger(player, slotCount, matteryPlayer.exopackContainer.containerSize)
-			player.displayClientMessage(TranslatableComponent("otm.exopack_upgrades.slots_upgraded", slotCount).withStyle(ChatFormatting.DARK_GREEN), false)
+				ExopackSlotsExpandedTrigger.trigger(player, slotCount, matteryPlayer.exopackContainer.containerSize)
+				player.displayClientMessage(TranslatableComponent("otm.exopack_upgrades.slots_upgraded", slotCount).withStyle(ChatFormatting.DARK_GREEN), false)
 
-			if (this === MItems.ExopackUpgrades.INVENTORY_UPGRADE_ENDER_DRAGON) {
-				MItems.ExopackUpgrades.ENDER_UPGRADE.finishUsingItem(ItemStack(MItems.ExopackUpgrades.INVENTORY_UPGRADE_ENDER_DRAGON), level, player)
+				if (this === MItems.ExopackUpgrades.INVENTORY_UPGRADE_ENDER_DRAGON) {
+					MItems.ExopackUpgrades.ENDER_UPGRADE.finishUsingItem(ItemStack(MItems.ExopackUpgrades.INVENTORY_UPGRADE_ENDER_DRAGON), level, player)
+				}
 			}
 		}
 

src/main/kotlin/ru/dbotthepony/mc/otm/item/exopack/ExopackUpgradeItem.kt

@@ -60,7 +60,7 @@ class ExopackUpgradeItem(
 	}
 
 	override fun use(p_41432_: Level, player: Player, hand: InteractionHand): InteractionResultHolder<ItemStack> {
-		if (player.matteryPlayer?.hasExopack == true && !type.prop.get(player.matteryPlayer!!)) {
+		if (player.matteryPlayer.hasExopack && !type.prop.get(player.matteryPlayer)) {
 			player.startUsingItem(hand)
 			return InteractionResultHolder.consume(player.getItemInHand(hand))
 		}
@@ -70,7 +70,7 @@ class ExopackUpgradeItem(
 
 	override fun finishUsingItem(itemStack: ItemStack, level: Level, player: LivingEntity): ItemStack {
 		if (player !is Player) return super.finishUsingItem(itemStack, level, player)
-		val mattery = player.matteryPlayer ?: return super.finishUsingItem(itemStack, level, player)
+		val mattery = player.matteryPlayer
 
 		if (!mattery.hasExopack || type.prop.get(mattery)) {
 			return super.finishUsingItem(itemStack, level, player)

src/main/kotlin/ru/dbotthepony/mc/otm/menu/MatteryMenu.kt

@@ -44,6 +44,7 @@ import ru.dbotthepony.mc.otm.container.sortWithIndices
 import ru.dbotthepony.mc.otm.core.ResourceLocation
 import ru.dbotthepony.mc.otm.core.collect.ConditionalSet
 import ru.dbotthepony.mc.otm.core.math.Decimal
+import ru.dbotthepony.mc.otm.core.util.GJRAND64RandomSource
 import ru.dbotthepony.mc.otm.menu.input.BooleanInputWithFeedback
 import ru.dbotthepony.mc.otm.menu.widget.ProfiledLevelGaugeWidget
 import ru.dbotthepony.mc.otm.network.MatteryStreamCodec
@@ -81,7 +82,7 @@ abstract class MatteryMenu(
 	val mSynchronizer = SynchableGroup()
 	val synchronizerRemote = mSynchronizer.Remote()
 	val player: Player get() = inventory.player
-	val random: RandomSource = RandomSource.create()
+	val random = GJRAND64RandomSource()
 
 	private val _playerInventorySlots = ArrayList<InventorySlot>()
 	private val _playerHotbarSlots = ArrayList<InventorySlot>()

src/main/kotlin/ru/dbotthepony/mc/otm/registry/MNames.kt

@@ -355,6 +355,8 @@ object MNames {
 	const val TRITANIUM_DOOR = "tritanium_door"
 	const val TRITANIUM_TRAPDOOR = "tritanium_trapdoor"
 	const val TRITANIUM_PRESSURE_PLATE = "tritanium_pressure_plate"
+
+	const val SMALL_CAPSULE = "small_capsule"
 }
 
 object StatNames {

src/main/kotlin/ru/dbotthepony/mc/otm/registry/game/MBlockEntities.kt

@@ -12,6 +12,7 @@ import ru.dbotthepony.mc.otm.block.entity.tech.*
 import ru.dbotthepony.mc.otm.block.entity.blackhole.BlackHoleBlockEntity
 import ru.dbotthepony.mc.otm.block.entity.blackhole.BlackHoleGeneratorBlockEntity
 import ru.dbotthepony.mc.otm.block.entity.cable.SimpleEnergyCableBlockEntity
+import ru.dbotthepony.mc.otm.block.entity.decorative.BreakableContainerBlockEntity
 import ru.dbotthepony.mc.otm.block.entity.decorative.CargoCrateBlockEntity
 import ru.dbotthepony.mc.otm.block.entity.decorative.DevChestBlockEntity
 import ru.dbotthepony.mc.otm.block.entity.decorative.FluidTankBlockEntity
@@ -118,6 +119,12 @@ object MBlockEntities {
 
 	val HOLO_SIGN: BlockEntityType<HoloSignBlockEntity> by registry.register(MNames.HOLO_SIGN) { BlockEntityType.Builder.of(::HoloSignBlockEntity, MBlocks.HOLO_SIGN).build(null) }
 
+	val BREAKABLE: BlockEntityType<BreakableContainerBlockEntity> by registry.register("breakable") {
+		val blocks = ArrayList<Block>()
+		blocks.add(MBlocks.SMALL_CAPSULE)
+		BlockEntityType.Builder.of(::BreakableContainerBlockEntity, *blocks.toTypedArray()).build(null)
+	}
+
 	internal fun register(bus: IEventBus) {
 		registry.register(bus)
 		bus.addListener(this::registerClient)

src/main/kotlin/ru/dbotthepony/mc/otm/registry/game/MBlocks.kt

@@ -38,6 +38,7 @@ import ru.dbotthepony.mc.otm.block.MultiblockTestBlock
 import ru.dbotthepony.mc.otm.block.RotatableMatteryBlock
 import ru.dbotthepony.mc.otm.block.StorageCableBlock
 import ru.dbotthepony.mc.otm.block.addSimpleDescription
+import ru.dbotthepony.mc.otm.block.decorative.BreakableContainerBlock
 import ru.dbotthepony.mc.otm.block.decorative.DevChestBlock
 import ru.dbotthepony.mc.otm.block.decorative.EngineBlock
 import ru.dbotthepony.mc.otm.block.decorative.FluidTankBlock
@@ -455,6 +456,15 @@ object MBlocks {
 
 	val MULTIBLOCK_TEST by registry.register("multiblock_test") { MultiblockTestBlock() }
 
+	val SMALL_CAPSULE by registry.register(MNames.SMALL_CAPSULE) {
+		BreakableContainerBlock(
+			BlockBehaviour.Properties.of()
+				.mapColor(MapColor.COLOR_GRAY)
+				.destroyTime(0f)
+				.explosionResistance(1.5f)
+		)
+	}
+
 	init {
 		MRegistry.registerBlocks(registry)
 	}

src/main/kotlin/ru/dbotthepony/mc/otm/registry/game/MItems.kt

@@ -692,6 +692,8 @@ object MItems {
 
 	val CONFIGURATOR: Item by registry.register(MNames.CONFIGURATOR) { ConfiguratorItem() }
 
+	val SMALL_CAPSULE by registry.register(MNames.SMALL_CAPSULE) { BlockItem(MBlocks.SMALL_CAPSULE, DEFAULT_PROPERTIES) }
+
 	init {
 		MRegistry.registerItems(registry)
 	}