Implement faster lookup methods for Slotted Container as well

gradle.properties

@@ -22,7 +22,7 @@ mixin_version=0.8.5
 neogradle.subsystems.parchment.minecraftVersion=1.21.1
 neogradle.subsystems.parchment.mappingsVersion=2024.11.17
 
-kommons_version=3.5.2
+kommons_version=3.6.0
 caffeine_cache_version=3.1.5
 
 jei_version=19.16.4.171

src/main/kotlin/ru/dbotthepony/mc/otm/container/BitmapTrackingContainer.kt

@@ -0,0 +1,61 @@
+package ru.dbotthepony.mc.otm.container
+
+import it.unimi.dsi.fastutil.ints.IntCollection
+import net.minecraft.world.item.ItemStack
+import ru.dbotthepony.kommons.collect.iterateClearBits
+import ru.dbotthepony.kommons.collect.iterateSetBits
+import ru.dbotthepony.mc.otm.core.collect.IntRange2Set
+import ru.dbotthepony.mc.otm.core.collect.map
+import java.util.*
+
+abstract class BitmapTrackingContainer<out S : IContainerSlot> : IEnhancedContainer<S> {
+	protected val bitmap = BitSet()
+
+	final override fun isEmpty(): Boolean {
+		return bitmap.isEmpty
+	}
+
+	final override fun nextEmptySlot(startIndex: Int): Int {
+		if (startIndex >= containerSize)
+			return -1
+		else if (startIndex < 0)
+			return bitmap.nextClearBit(0)
+		else
+			return bitmap.nextClearBit(startIndex)
+	}
+
+	final override fun nextNonEmptySlot(startIndex: Int): Int {
+		if (startIndex >= containerSize)
+			return -1
+		else if (startIndex < 0)
+			return bitmap.nextSetBit(0)
+		else
+			return bitmap.nextSetBit(startIndex)
+	}
+
+	final override fun iterator(): Iterator<ItemStack> {
+		return bitmap.iterateSetBits(containerSize).map { this[it] }
+	}
+
+	final override fun nonEmptySlotIndexIterator(): IntIterator {
+		return bitmap.iterateSetBits(containerSize)
+	}
+
+	final override fun emptySlotIndexIterator(): IntIterator {
+		return bitmap.iterateClearBits(containerSize)
+	}
+
+	final override fun emptySlotIndexIterator(allowedSlots: IntCollection): IntIterator {
+		if (allowedSlots is IntRange2Set && allowedSlots.isNotEmpty())
+			return bitmap.iterateClearBits(allowedSlots.firstInt(), allowedSlots.lastInt() + 1)
+
+		return super.emptySlotIndexIterator(allowedSlots)
+	}
+
+	final override fun nonEmptySlotIndexIterator(allowedSlots: IntCollection): IntIterator {
+		if (allowedSlots is IntRange2Set && allowedSlots.isNotEmpty())
+			return bitmap.iterateSetBits(allowedSlots.firstInt(), allowedSlots.lastInt() + 1)
+
+		return super.nonEmptySlotIndexIterator(allowedSlots)
+	}
+}

src/main/kotlin/ru/dbotthepony/mc/otm/container/EnhancedContainer.kt

@@ -1,5 +1,6 @@
 package ru.dbotthepony.mc.otm.container
 
+import it.unimi.dsi.fastutil.ints.IntCollection
 import it.unimi.dsi.fastutil.ints.IntOpenHashSet
 import net.minecraft.core.HolderLookup.Provider
 import net.minecraft.nbt.CompoundTag
@@ -12,9 +13,14 @@ import net.minecraft.world.entity.player.Player
 import net.minecraft.world.item.ItemStack
 import net.neoforged.neoforge.common.util.INBTSerializable
 import org.apache.logging.log4j.LogManager
+import ru.dbotthepony.kommons.collect.iterateClearBits
+import ru.dbotthepony.kommons.collect.iterateSetBits
 import ru.dbotthepony.mc.otm.container.slotted.SlottedContainer
+import ru.dbotthepony.mc.otm.core.collect.IntRange2Set
+import ru.dbotthepony.mc.otm.core.collect.map
 import ru.dbotthepony.mc.otm.core.isNotEmpty
 import ru.dbotthepony.mc.otm.core.nbt.set
+import java.util.BitSet
 
 /**
  * Flexible base implementation of [IEnhancedContainer], designed to be inherited, or used as-is
@@ -23,7 +29,7 @@ import ru.dbotthepony.mc.otm.core.nbt.set
  * This is supposed to be counterpart to [SimpleContainer] of Minecraft itself, with more features
  * and improved performance (inside [IEnhancedContainer] defined methods).
  */
-abstract class EnhancedContainer<out S : IContainerSlot>(private val size: Int) : IEnhancedContainer<S>, INBTSerializable<CompoundTag> {
+abstract class EnhancedContainer<out S : IContainerSlot>(private val size: Int) : BitmapTrackingContainer<S>(), INBTSerializable<CompoundTag> {
 	private val items = Array(size) { ItemStack.EMPTY }
 	private val observedItems = Array(size) { ItemStack.EMPTY }
 
@@ -36,9 +42,11 @@ abstract class EnhancedContainer<out S : IContainerSlot>(private val size: Int)
 			if (items[slot].isEmpty) {
 				items[slot] = ItemStack.EMPTY
 				observedItems[slot] = ItemStack.EMPTY
+				bitmap[slot] = false
 			} else {
 				notifySlotChanged(slot, observedItems[slot])
 				observedItems[slot] = items[slot].copy()
+				bitmap[slot] = true
 			}
 		}
 	}
@@ -50,6 +58,7 @@ abstract class EnhancedContainer<out S : IContainerSlot>(private val size: Int)
 	override fun clearContent() {
 		items.fill(ItemStack.EMPTY)
 		observedItems.fill(ItemStack.EMPTY)
+		bitmap.clear()
 	}
 
 	override fun setChanged() {
@@ -146,6 +155,7 @@ abstract class EnhancedContainer<out S : IContainerSlot>(private val size: Int)
 		val copy = observedItems.copyOf()
 		items.fill(ItemStack.EMPTY)
 		observedItems.fill(ItemStack.EMPTY)
+		bitmap.clear()
 
 		val seenSlots = IntOpenHashSet()
 		val ops = provider.createSerializationContext(NbtOps.INSTANCE)
@@ -166,6 +176,7 @@ abstract class EnhancedContainer<out S : IContainerSlot>(private val size: Int)
 							if (it.isNotEmpty) {
 								items[slot] = it
 								observedItems[slot] = it.copy()
+								bitmap[slot] = true
 
 								if (it.count != copy[slot].count || !ItemStack.isSameItemSameComponents(it, copy[slot]))
 									notifySlotChanged(slot, copy[slot])

src/main/kotlin/ru/dbotthepony/mc/otm/container/IEnhancedContainer.kt

@@ -76,10 +76,22 @@ interface IEnhancedContainer<out S : IContainerSlot> : Container, RecipeInput, I
 	}
 
 	fun nonEmptySlotIterator(): Iterator<S> {
-		return slotIterator().filter { it.isNotEmpty }
+		return nonEmptySlotIndexIterator().map { containerSlot(it) }
 	}
 
-	private fun slotIterator(allowedSlots: IntCollection, predicate: Predicate<ItemStack>): IntIterator {
+	fun emptySlotIterator(): Iterator<S> {
+		return emptySlotIndexIterator().map { containerSlot(it) }
+	}
+
+	fun nonEmptySlotIterator(allowedSlots: IntCollection): Iterator<S> {
+		return nonEmptySlotIndexIterator(allowedSlots).map { containerSlot(it) }
+	}
+
+	fun emptySlotIterator(allowedSlots: IntCollection): Iterator<S> {
+		return emptySlotIndexIterator(allowedSlots).map { containerSlot(it) }
+	}
+
+	private fun slotIndexWalker(allowedSlots: IntCollection, predicate: Predicate<ItemStack>): IntIterator {
 		return object : IntIterator() {
 			private val parent = allowedSlots.intIterator()
 			private var foundNext = false
@@ -120,6 +132,14 @@ interface IEnhancedContainer<out S : IContainerSlot> : Container, RecipeInput, I
 		}
 	}
 
+	fun emptySlotIndexIterator(allowedSlots: IntCollection): IntIterator {
+		return slotIndexWalker(allowedSlots) { it.isEmpty }
+	}
+
+	fun nonEmptySlotIndexIterator(allowedSlots: IntCollection): IntIterator {
+		return slotIndexWalker(allowedSlots) { it.isNotEmpty }
+	}
+
 	fun emptySlotIndexIterator(): IntIterator {
 		return emptySlotIndexIterator(slotRange)
 	}
@@ -128,20 +148,30 @@ interface IEnhancedContainer<out S : IContainerSlot> : Container, RecipeInput, I
 		return nonEmptySlotIndexIterator(slotRange)
 	}
 
-	fun emptySlotIndexIterator(allowedSlots: IntCollection): IntIterator {
+	fun slotIndexWithItemIterator(item: Item): IntIterator {
-		return slotIterator(allowedSlots) { it.isEmpty }
+		return slotIndexWithItemIterator(item, slotRange)
 	}
 
-	fun nonEmptySlotIndexIterator(allowedSlots: IntCollection): IntIterator {
+	fun slotIndexWithItemIterator(item: Item, allowedSlots: IntCollection): IntIterator {
-		return slotIterator(allowedSlots) { it.isNotEmpty }
+		val parent = nonEmptySlotIndexIterator(allowedSlots).filter { this[it].isNotEmpty && this[it].item === item }
+
+		return object : IntIterator() {
+			override fun nextInt(): Int {
+				return parent.next()
+			}
+
+			override fun hasNext(): Boolean {
+				return parent.hasNext()
+			}
+		}
 	}
 
-	fun slotWithItemIterator(item: Item): IntIterator {
+	fun slotWithItemIterator(item: Item): Iterator<S> {
 		return slotWithItemIterator(item, slotRange)
 	}
 
-	fun slotWithItemIterator(item: Item, allowedSlots: IntCollection): IntIterator {
+	fun slotWithItemIterator(item: Item, allowedSlots: IntCollection): Iterator<S> {
-		return slotIterator(allowedSlots) { it.isNotEmpty && it.item === item }
+		return slotIndexWithItemIterator(item, allowedSlots).map { containerSlot(it) }
 	}
 
 	fun nextEmptySlot(startIndex: Int): Int {
@@ -189,17 +219,11 @@ interface IEnhancedContainer<out S : IContainerSlot> : Container, RecipeInput, I
 	}
 
 	override fun isEmpty(): Boolean {
-		return super.isEmpty()
+		return nextNonEmptySlot(0) != -1
 	}
 
 	val hasEmptySlots: Boolean get() {
-		for (i in 0 until containerSize) {
+		return nextEmptySlot(0) != -1
-			if (this[i].isEmpty) {
-				return true
-			}
-		}
-
-		return false
 	}
 
 	override fun size(): Int {
@@ -209,11 +233,8 @@ interface IEnhancedContainer<out S : IContainerSlot> : Container, RecipeInput, I
 	override fun countItem(item: Item): Int {
 		var count = 0
 
-		for (stack in this) {
+		for (slot in slotWithItemIterator(item))
-			if (stack.item === item) {
+			count += slot.item.count
-				count += stack.count
-			}
-		}
 
 		return count
 	}
@@ -257,9 +278,7 @@ interface IEnhancedContainer<out S : IContainerSlot> : Container, RecipeInput, I
 			return stack
 
 		// двигаем в одинаковые слоты
-		for (i in slotWithItemIterator(stack.item, slots)) {
+		for (slot in slotWithItemIterator(stack.item, slots)) {
-			val slot = containerSlot(i)
-
 			val condition: Boolean
 
 			if (slot is IFilteredContainerSlot) {
@@ -295,9 +314,7 @@ interface IEnhancedContainer<out S : IContainerSlot> : Container, RecipeInput, I
 		}
 
 		if (!onlyIntoExisting) {
-			for (i in emptySlotIndexIterator(slots)) {
+			for (slot in emptySlotIterator(slots)) {
-				val slot = containerSlot(i)
-
 				val condition: Boolean
 
 				if (slot is IFilteredContainerSlot) {

src/main/kotlin/ru/dbotthepony/mc/otm/container/slotted/ContainerSlot.kt

@@ -56,12 +56,12 @@ open class ContainerSlot(
 			notifyChanged(observedItem)
 			observedItem = ItemStack.EMPTY
 			_item = ItemStack.EMPTY
-			container.notifyChanged()
+			container.notifyChanged(slot)
 			return true
 		} else if (observedItem.count != item.count || !ItemStack.isSameItemSameComponents(item, observedItem)) {
 			notifyChanged(observedItem)
 			observedItem = item.copy()
-			container.notifyChanged()
+			container.notifyChanged(slot)
 			return true
 		}
 

src/main/kotlin/ru/dbotthepony/mc/otm/container/slotted/SlottedContainer.kt

@@ -17,6 +17,7 @@ import net.minecraft.world.item.ItemStack
 import net.neoforged.neoforge.common.util.INBTSerializable
 import org.apache.logging.log4j.LogManager
 import ru.dbotthepony.kommons.util.Either
+import ru.dbotthepony.mc.otm.container.BitmapTrackingContainer
 import ru.dbotthepony.mc.otm.container.EnhancedContainer
 import ru.dbotthepony.mc.otm.container.IAutomatedContainer
 import ru.dbotthepony.mc.otm.container.IAutomatedContainerSlot
@@ -25,6 +26,7 @@ import ru.dbotthepony.mc.otm.container.balance
 import ru.dbotthepony.mc.otm.core.isNotEmpty
 import ru.dbotthepony.mc.otm.core.nbt.set
 import ru.dbotthepony.mc.otm.data.codec.minRange
+import java.util.BitSet
 import java.util.function.Predicate
 import kotlin.reflect.KClass
 
@@ -40,7 +42,7 @@ class SlottedContainer(
 	slots: Collection<MarkedSlotProvider<*>>,
 	private val stillValid: Predicate<Player>,
 	private val globalChangeListeners: Array<Runnable>
-) : IAutomatedContainer<ContainerSlot>, INBTSerializable<Tag> {
+) : BitmapTrackingContainer<ContainerSlot>(), IAutomatedContainer<ContainerSlot>, INBTSerializable<Tag> {
 	interface ISlotGroup<T : ContainerSlot> : List<T> {
 		/**
 		 * @see IAutomatedContainer.addItem
@@ -130,6 +132,7 @@ class SlottedContainer(
 	private var suppressListeners = false
 
 	override fun clearContent() {
+		bitmap.clear()
 		suppressListeners = true
 
 		try {
@@ -149,6 +152,11 @@ class SlottedContainer(
 		globalChangeListeners.forEach { it.run() }
 	}
 
+	fun notifyChanged(slot: Int) {
+		notifyChanged()
+		bitmap[slot] = slots[slot].isNotEmpty
+	}
+
 	// called by outside code (vanilla and other unaware mods)
 	override fun setChanged() {
 		suppressListeners = true
@@ -253,6 +261,7 @@ class SlottedContainer(
 	override fun deserializeNBT(provider: HolderLookup.Provider, nbt: Tag) {
 		lostItems.clear()
 		slots.forEach { it.clear() }
+		bitmap.clear()
 
 		if (nbt is CompoundTag) {
 			// legacy container