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package io.dico.parcels2.blockvisitor
import io.dico.parcels2.util.Region
import io.dico.parcels2.util.Vec3i
import io.dico.parcels2.util.get
import org.bukkit.Bukkit
import org.bukkit.Material
import org.bukkit.World
import org.bukkit.block.Block
import org.bukkit.block.data.BlockData
private val air = Bukkit.createBlockData(Material.AIR)
// TODO order paste such that attachables are placed after the block they depend on
class Schematic {
val size: Vec3i get() = _size!!
private var _size: Vec3i? = null
set(value) {
field?.let { throw IllegalStateException() }
field = value
}
private var blockDatas: Array<BlockData?>? = null
private val extra = mutableMapOf<Vec3i, (Block) -> Unit>()
private var isLoaded = false; private set
private val traverser: RegionTraverser = RegionTraverser.upward
suspend fun WorkerScope.load(world: World, region: Region) {
_size = region.size
val data = arrayOfNulls<BlockData>(region.blockCount).also { blockDatas = it }
val blocks = traverser.traverseRegion(region)
val total = region.blockCount.toDouble()
for ((index, vec) in blocks.withIndex()) {
markSuspensionPoint()
setProgress(index / total)
val block = world[vec]
if (block.y > 255) continue
val blockData = block.blockData
data[index] = blockData
}
isLoaded = true
}
suspend fun WorkerScope.paste(world: World, position: Vec3i) {
if (!isLoaded) throw IllegalStateException()
val region = Region(position, _size!!)
val blocks = traverser.traverseRegion(region, worldHeight = world.maxHeight)
val blockDatas = blockDatas!!
var postponed = hashMapOf<Vec3i, BlockData>()
// 90% of the progress of this job is allocated to this code block
delegateWork(0.9) {
for ((index, vec) in blocks.withIndex()) {
markSuspensionPoint()
val block = world[vec]
val type = blockDatas[index] ?: air
if (type !== air && isAttachable(type.material)) {
val supportingBlock = vec + getSupportingBlock(type)
if (!postponed.containsKey(supportingBlock) && traverser.comesFirst(vec, supportingBlock)) {
block.blockData = type
} else {
postponed[vec] = type
}
} else {
block.blockData = type
}
}
}
delegateWork {
while (!postponed.isEmpty()) {
val newMap = hashMapOf<Vec3i, BlockData>()
for ((vec, type) in postponed) {
val supportingBlock = vec + getSupportingBlock(type)
if (supportingBlock in postponed && supportingBlock != vec) {
newMap[vec] = type
} else {
world[vec].blockData = type
}
}
postponed = newMap
}
}
}
fun getLoadTask(world: World, region: Region): TimeLimitedTask = {
load(world, region)
}
fun getPasteTask(world: World, position: Vec3i): TimeLimitedTask = {
paste(world, position)
}
}
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