mirror of https://github.com/Minestom/Minestom.git
529 lines
24 KiB
Java
529 lines
24 KiB
Java
package net.minestom.server.instance;
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import it.unimi.dsi.fastutil.ints.Int2ObjectMap;
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import it.unimi.dsi.fastutil.ints.Int2ObjectOpenHashMap;
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import net.minestom.server.MinecraftServer;
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import net.minestom.server.coordinate.Point;
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import net.minestom.server.coordinate.Vec;
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import net.minestom.server.instance.block.Block;
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import net.minestom.server.instance.generator.GenerationUnit;
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import net.minestom.server.instance.generator.UnitModifier;
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import net.minestom.server.instance.palette.Palette;
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import net.minestom.server.world.biomes.Biome;
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import net.minestom.server.world.biomes.BiomeManager;
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import org.jetbrains.annotations.NotNull;
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import java.util.List;
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import java.util.Objects;
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import java.util.concurrent.CopyOnWriteArrayList;
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import java.util.concurrent.atomic.AtomicInteger;
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import java.util.function.Consumer;
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import static net.minestom.server.utils.chunk.ChunkUtils.*;
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final class GeneratorImpl {
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private static final Vec SECTION_SIZE = new Vec(16);
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private static final BiomeManager BIOME_MANAGER = MinecraftServer.getBiomeManager();
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static GenerationUnit section(Section section, int sectionX, int sectionY, int sectionZ,
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boolean fork) {
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final Vec start = SECTION_SIZE.mul(sectionX, sectionY, sectionZ);
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final Vec end = start.add(SECTION_SIZE);
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final UnitModifier modifier = new SectionModifierImpl(SECTION_SIZE, start, end,
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section.blockPalette(), section.biomePalette(), new Int2ObjectOpenHashMap<>(0), fork);
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return unit(modifier, start, end, null);
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}
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static GenerationUnit section(Section section, int sectionX, int sectionY, int sectionZ) {
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return section(section, sectionX, sectionY, sectionZ, false);
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}
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static UnitImpl chunk(Chunk chunk, int minSection, int maxSection,
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List<Section> chunkSections, int chunkX, int chunkZ) {
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final int minY = minSection * 16;
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AtomicInteger sectionCounterY = new AtomicInteger(minSection);
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List<GenerationUnit> sections = chunkSections.stream()
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.map(section -> section(section, chunkX, sectionCounterY.getAndIncrement(), chunkZ))
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.toList();
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final Vec size = new Vec(16, (maxSection - minSection) * 16, 16);
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final Vec start = new Vec(chunkX * 16, minY, chunkZ * 16);
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final Vec end = new Vec(chunkX * 16 + 16, size.y() + minY, chunkZ * 16 + 16);
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final UnitModifier modifier = new AreaModifierImpl(chunk,
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size, start, end, 1, sections.size(), 1, sections);
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return unit(modifier, start, end, sections);
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}
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static UnitImpl chunk(int minSection, int maxSection,
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List<Section> chunkSections, int chunkX, int chunkZ) {
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return chunk(null, minSection, maxSection, chunkSections, chunkX, chunkZ);
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}
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static UnitImpl chunk(Chunk chunk) {
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return chunk(chunk, chunk.minSection, chunk.maxSection, chunk.getSections(), chunk.getChunkX(), chunk.getChunkZ());
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}
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static UnitImpl unit(UnitModifier modifier, Point start, Point end,
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List<GenerationUnit> divided) {
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if (start.x() > end.x() || start.y() > end.y() || start.z() > end.z()) {
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throw new IllegalArgumentException("absoluteStart must be before absoluteEnd");
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}
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if (start.x() % 16 != 0 || start.y() % 16 != 0 || start.z() % 16 != 0) {
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throw new IllegalArgumentException("absoluteStart must be a multiple of 16");
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}
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if (end.x() % 16 != 0 || end.y() % 16 != 0 || end.z() % 16 != 0) {
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throw new IllegalArgumentException("absoluteEnd must be a multiple of 16");
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}
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final Point size = end.sub(start);
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return new UnitImpl(modifier, size, start, end, divided, new CopyOnWriteArrayList<>());
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}
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static final class DynamicFork implements Block.Setter {
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Vec minSection;
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int width, height, depth;
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List<GenerationUnit> sections;
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@Override
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public void setBlock(int x, int y, int z, @NotNull Block block) {
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resize(x, y, z);
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GenerationUnit section = findAbsolute(sections, minSection, width, height, depth, x, y, z);
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assert section.absoluteStart().chunkX() == getChunkCoordinate(x) &&
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section.absoluteStart().section() == getChunkCoordinate(y) &&
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section.absoluteStart().chunkZ() == getChunkCoordinate(z) :
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"Invalid section " + section.absoluteStart() + " for " + x + ", " + y + ", " + z;
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section.modifier().setBlock(x, y, z, block);
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}
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private void resize(int x, int y, int z) {
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final int sectionX = getChunkCoordinate(x);
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final int sectionY = getChunkCoordinate(y);
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final int sectionZ = getChunkCoordinate(z);
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if (sections == null) {
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this.minSection = new Vec(sectionX * 16, sectionY * 16, sectionZ * 16);
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this.width = 1;
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this.height = 1;
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this.depth = 1;
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this.sections = List.of(section(new Section(), sectionX, sectionY, sectionZ, true));
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} else if (x < minSection.x() || y < minSection.y() || z < minSection.z() ||
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x >= minSection.x() + width * 16 || y >= minSection.y() + height * 16 || z >= minSection.z() + depth * 16) {
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// Resize necessary
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final Vec newMin = new Vec(Math.min(minSection.x(), sectionX * 16),
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Math.min(minSection.y(), sectionY * 16),
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Math.min(minSection.z(), sectionZ * 16));
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final Vec newMax = new Vec(Math.max(minSection.x() + width * 16, sectionX * 16 + 16),
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Math.max(minSection.y() + height * 16, sectionY * 16 + 16),
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Math.max(minSection.z() + depth * 16, sectionZ * 16 + 16));
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final int newWidth = getChunkCoordinate(newMax.x() - newMin.x());
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final int newHeight = getChunkCoordinate(newMax.y() - newMin.y());
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final int newDepth = getChunkCoordinate(newMax.z() - newMin.z());
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// Resize
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GenerationUnit[] newSections = new GenerationUnit[newWidth * newHeight * newDepth];
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// Copy old sections
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for (GenerationUnit s : sections) {
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final Point start = s.absoluteStart();
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final int newX = getChunkCoordinate(start.x() - newMin.x());
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final int newY = getChunkCoordinate(start.y() - newMin.y());
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final int newZ = getChunkCoordinate(start.z() - newMin.z());
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final int index = findIndex(newWidth, newHeight, newDepth, newX, newY, newZ);
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newSections[index] = s;
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}
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// Fill new sections
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final int startX = newMin.chunkX();
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final int startY = newMin.section();
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final int startZ = newMin.chunkZ();
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for (int i = 0; i < newSections.length; i++) {
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if (newSections[i] == null) {
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final Point coordinates = to3D(i, newWidth, newHeight, newDepth);
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final int newX = coordinates.blockX() + startX;
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final int newY = coordinates.blockY() + startY;
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final int newZ = coordinates.blockZ() + startZ;
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final GenerationUnit unit = section(new Section(), newX, newY, newZ, true);
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newSections[i] = unit;
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}
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}
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this.sections = List.of(newSections);
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this.minSection = newMin;
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this.width = newWidth;
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this.height = newHeight;
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this.depth = newDepth;
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}
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}
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}
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record UnitImpl(UnitModifier modifier, Point size,
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Point absoluteStart, Point absoluteEnd,
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List<GenerationUnit> divided,
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List<UnitImpl> forks) implements GenerationUnit {
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@Override
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public @NotNull GenerationUnit fork(@NotNull Point start, @NotNull Point end) {
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final int minSectionX = floorSection(start.blockX()) / 16;
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final int minSectionY = floorSection(start.blockY()) / 16;
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final int minSectionZ = floorSection(start.blockZ()) / 16;
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final int maxSectionX = ceilSection(end.blockX()) / 16;
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final int maxSectionY = ceilSection(end.blockY()) / 16;
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final int maxSectionZ = ceilSection(end.blockZ()) / 16;
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final int width = maxSectionX - minSectionX;
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final int height = maxSectionY - minSectionY;
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final int depth = maxSectionZ - minSectionZ;
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GenerationUnit[] units = new GenerationUnit[width * height * depth];
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int index = 0;
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for (int sectionX = minSectionX; sectionX < maxSectionX; sectionX++) {
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for (int sectionY = minSectionY; sectionY < maxSectionY; sectionY++) {
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for (int sectionZ = minSectionZ; sectionZ < maxSectionZ; sectionZ++) {
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final GenerationUnit unit = section(new Section(), sectionX, sectionY, sectionZ, true);
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units[index++] = unit;
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}
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}
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}
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final List<GenerationUnit> sections = List.of(units);
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final Point startSection = new Vec(minSectionX * 16, minSectionY * 16, minSectionZ * 16);
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return registerFork(startSection, sections, width, height, depth);
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}
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@Override
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public void fork(@NotNull Consumer<Block.@NotNull Setter> consumer) {
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DynamicFork dynamicFork = new DynamicFork();
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consumer.accept(dynamicFork);
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final Point startSection = dynamicFork.minSection;
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if (startSection == null)
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return; // No block has been placed
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final int width = dynamicFork.width;
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final int height = dynamicFork.height;
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final int depth = dynamicFork.depth;
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final List<GenerationUnit> sections = dynamicFork.sections;
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registerFork(startSection, sections, width, height, depth);
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}
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@Override
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public @NotNull List<GenerationUnit> subdivide() {
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return Objects.requireNonNullElseGet(divided, GenerationUnit.super::subdivide);
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}
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private GenerationUnit registerFork(Point start, List<GenerationUnit> sections,
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int width, int height, int depth) {
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final Point end = start.add(width * 16, height * 16, depth * 16);
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final Point size = end.sub(start);
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final AreaModifierImpl modifier = new AreaModifierImpl(null,
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size, start, end, width, height, depth, sections);
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final UnitImpl fork = new UnitImpl(modifier, size, start, end, sections, forks);
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forks.add(fork);
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return fork;
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}
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}
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record SectionModifierImpl(Point size, Point start, Point end,
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Palette blockPalette, Palette biomePalette,
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Int2ObjectMap<Block> cache, boolean fork) implements GenericModifier {
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@Override
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public void setBiome(int x, int y, int z, @NotNull Biome biome) {
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if (fork) throw new IllegalStateException("Cannot modify biomes of a fork");
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var id = BIOME_MANAGER.getId(biome);
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if (id == -1) throw new IllegalStateException("Biome has not been registered: " + biome.namespace());
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this.biomePalette.set(
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toSectionRelativeCoordinate(x) / 4,
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toSectionRelativeCoordinate(y) / 4,
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toSectionRelativeCoordinate(z) / 4, id);
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}
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@Override
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public void setBlock(int x, int y, int z, @NotNull Block block) {
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final int localX = toSectionRelativeCoordinate(x);
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final int localY = toSectionRelativeCoordinate(y);
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final int localZ = toSectionRelativeCoordinate(z);
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handleCache(localX, localY, localZ, block);
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this.blockPalette.set(localX, localY, localZ, retrieveBlockId(block));
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}
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@Override
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public void setRelative(int x, int y, int z, @NotNull Block block) {
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handleCache(x, y, z, block);
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this.blockPalette.set(x, y, z, retrieveBlockId(block));
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}
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@Override
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public void setAllRelative(@NotNull Supplier supplier) {
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this.blockPalette.setAll((x, y, z) -> {
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final Block block = supplier.get(x, y, z);
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handleCache(x, y, z, block);
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return retrieveBlockId(block);
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});
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}
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@Override
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public void fill(@NotNull Block block) {
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if (requireCache(block)) {
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for (int x = 0; x < 16; x++) {
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for (int y = 0; y < 16; y++) {
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for (int z = 0; z < 16; z++) {
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this.cache.put(getBlockIndex(x, y, z), block);
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}
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}
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}
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}
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this.blockPalette.fill(retrieveBlockId(block));
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}
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@Override
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public void fillBiome(@NotNull Biome biome) {
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if (fork) throw new IllegalStateException("Cannot modify biomes of a fork");
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var id = MinecraftServer.getBiomeManager().getId(biome);
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if (id == -1) throw new IllegalStateException("Biome has not been registered: " + biome.namespace());
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this.biomePalette.fill(id);
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}
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private int retrieveBlockId(Block block) {
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return fork ? block.stateId() + 1 : block.stateId();
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}
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private void handleCache(int x, int y, int z, Block block) {
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if (requireCache(block)) {
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this.cache.put(getBlockIndex(x, y, z), block);
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} else if (!cache.isEmpty()) {
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this.cache.remove(getBlockIndex(x, y, z));
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}
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}
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private boolean requireCache(Block block) {
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return block.hasNbt() || block.handler() != null || block.registry().isBlockEntity();
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}
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}
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record AreaModifierImpl(Chunk chunk,
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Point size, Point start, Point end,
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int width, int height, int depth,
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List<GenerationUnit> sections) implements GenericModifier {
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@Override
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public void setBlock(int x, int y, int z, @NotNull Block block) {
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checkBorder(x, y, z);
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final GenerationUnit section = findAbsoluteSection(x, y, z);
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y -= start.y();
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section.modifier().setBlock(x, y, z, block);
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}
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@Override
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public void setBiome(int x, int y, int z, @NotNull Biome biome) {
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checkBorder(x, y, z);
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final GenerationUnit section = findAbsoluteSection(x, y, z);
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y -= start.y();
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section.modifier().setBiome(x, y, z, biome);
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}
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@Override
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public void setRelative(int x, int y, int z, @NotNull Block block) {
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if (x < 0 || x >= size.x() || y < 0 || y >= size.y() || z < 0 || z >= size.z()) {
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throw new IllegalArgumentException("x, y and z must be in the chunk: " + x + ", " + y + ", " + z);
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}
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final GenerationUnit section = findRelativeSection(x, y, z);
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x = toSectionRelativeCoordinate(x);
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y = toSectionRelativeCoordinate(y);
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z = toSectionRelativeCoordinate(z);
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section.modifier().setBlock(x, y, z, block);
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}
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@Override
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public void setAll(@NotNull Supplier supplier) {
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for (GenerationUnit section : sections) {
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final var start = section.absoluteStart();
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final int startX = start.blockX();
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final int startY = start.blockY();
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final int startZ = start.blockZ();
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section.modifier().setAllRelative((x, y, z) ->
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supplier.get(x + startX, y + startY, z + startZ));
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}
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}
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@Override
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public void setAllRelative(@NotNull Supplier supplier) {
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final Point start = this.start;
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for (GenerationUnit section : sections) {
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final Point sectionStart = section.absoluteStart();
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final int offsetX = sectionStart.blockX() - start.blockX();
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final int offsetY = sectionStart.blockY() - start.blockY();
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final int offsetZ = sectionStart.blockZ() - start.blockZ();
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section.modifier().setAllRelative((x, y, z) ->
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supplier.get(x + offsetX, y + offsetY, z + offsetZ));
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}
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}
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@Override
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public void fill(@NotNull Block block) {
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for (GenerationUnit section : sections) {
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section.modifier().fill(block);
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}
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}
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@Override
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public void fillBiome(@NotNull Biome biome) {
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for (GenerationUnit section : sections) {
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section.modifier().fillBiome(biome);
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}
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}
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@Override
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public void fillHeight(int minHeight, int maxHeight, @NotNull Block block) {
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final Point start = this.start;
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final int width = this.width;
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final int depth = this.depth;
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final int startX = start.blockX();
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final int startZ = start.blockZ();
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final int minMultiple = floorSection(minHeight);
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final int maxMultiple = ceilSection(maxHeight);
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final boolean startOffset = minMultiple != minHeight;
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final boolean endOffset = maxMultiple != maxHeight;
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if (startOffset || endOffset) {
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final int firstFill = Math.min(minMultiple + 16, maxHeight);
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final int lastFill = startOffset ? Math.max(firstFill, floorSection(maxHeight)) : floorSection(maxHeight);
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for (int x = 0; x < width; x++) {
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for (int z = 0; z < depth; z++) {
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final int sectionX = startX + x * 16;
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final int sectionZ = startZ + z * 16;
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// Fill start
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if (startOffset) {
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final GenerationUnit section = findAbsoluteSection(sectionX, minMultiple, sectionZ);
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section.modifier().fillHeight(minHeight, firstFill, block);
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}
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// Fill end
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if (endOffset) {
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final GenerationUnit section = findAbsoluteSection(sectionX, maxHeight, sectionZ);
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section.modifier().fillHeight(lastFill, maxHeight, block);
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}
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}
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}
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}
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// Middle sections (to fill)
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final int startSection = (minMultiple) / 16 + (startOffset ? 1 : 0);
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final int endSection = (maxMultiple) / 16 + (endOffset ? -1 : 0);
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for (int i = startSection; i < endSection; i++) {
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for (int x = 0; x < width; x++) {
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for (int z = 0; z < depth; z++) {
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final GenerationUnit section = findAbsoluteSection(startX + x * 16, i * 16, startZ + z * 16);
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section.modifier().fill(block);
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}
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}
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}
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}
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private GenerationUnit findAbsoluteSection(int x, int y, int z) {
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return findAbsolute(sections, start, width, height, depth, x, y, z);
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}
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private GenerationUnit findRelativeSection(int x, int y, int z) {
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final int sectionX = getChunkCoordinate(x);
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final int sectionY = getChunkCoordinate(y);
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final int sectionZ = getChunkCoordinate(z);
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final int index = sectionZ + sectionY * depth + sectionX * depth * height;
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return sections.get(index);
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}
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private void checkBorder(int x, int y, int z) {
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if (x < start.x() || x >= end.x() ||
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y < start.y() || y >= end.y() ||
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z < start.z() || z >= end.z()) {
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final String format = String.format("Invalid coordinates: %d, %d, %d for area %s %s", x, y, z, start, end);
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throw new IllegalArgumentException(format);
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}
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}
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}
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sealed interface GenericModifier extends UnitModifier
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permits AreaModifierImpl, SectionModifierImpl {
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Point size();
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Point start();
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Point end();
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@Override
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default void setAll(@NotNull Supplier supplier) {
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final Point start = start();
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final Point end = end();
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final int endX = end.blockX();
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final int endY = end.blockY();
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final int endZ = end.blockZ();
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for (int x = start.blockX(); x < endX; x++) {
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for (int y = start.blockY(); y < endY; y++) {
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for (int z = start.blockZ(); z < endZ; z++) {
|
|
setBlock(x, y, z, supplier.get(x, y, z));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
@Override
|
|
default void setAllRelative(@NotNull Supplier supplier) {
|
|
final Point size = size();
|
|
final int endX = size.blockX();
|
|
final int endY = size.blockY();
|
|
final int endZ = size.blockZ();
|
|
for (int x = 0; x < endX; x++) {
|
|
for (int y = 0; y < endY; y++) {
|
|
for (int z = 0; z < endZ; z++) {
|
|
setRelative(x, y, z, supplier.get(x, y, z));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
@Override
|
|
default void fill(@NotNull Block block) {
|
|
fill(start(), end(), block);
|
|
}
|
|
|
|
@Override
|
|
default void fill(@NotNull Point start, @NotNull Point end, @NotNull Block block) {
|
|
final int endX = end.blockX();
|
|
final int endY = end.blockY();
|
|
final int endZ = end.blockZ();
|
|
for (int x = start.blockX(); x < endX; x++) {
|
|
for (int y = start.blockY(); y < endY; y++) {
|
|
for (int z = start.blockZ(); z < endZ; z++) {
|
|
setBlock(x, y, z, block);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
@Override
|
|
default void fillHeight(int minHeight, int maxHeight, @NotNull Block block) {
|
|
final Point start = start();
|
|
final Point end = end();
|
|
final int startY = start.blockY();
|
|
final int endY = end.blockY();
|
|
if (startY >= minHeight && endY <= maxHeight) {
|
|
// Fast path if the unit is fully contained in the height range
|
|
fill(start, end, block);
|
|
} else {
|
|
// Slow path if the unit is not fully contained in the height range
|
|
fill(start.withY(Math.max(minHeight, startY)), end.withY(Math.min(maxHeight, endY)), block);
|
|
}
|
|
}
|
|
}
|
|
|
|
private static GenerationUnit findAbsolute(List<GenerationUnit> units, Point start,
|
|
int width, int height, int depth,
|
|
int x, int y, int z) {
|
|
final int sectionX = getChunkCoordinate(x - start.x());
|
|
final int sectionY = getChunkCoordinate(y - start.y());
|
|
final int sectionZ = getChunkCoordinate(z - start.z());
|
|
final int index = findIndex(width, height, depth, sectionX, sectionY, sectionZ);
|
|
return units.get(index);
|
|
}
|
|
|
|
private static int findIndex(int width, int height, int depth,
|
|
int x, int y, int z) {
|
|
return (z * width * height) + (y * width) + x;
|
|
}
|
|
|
|
private static Point to3D(int idx, int width, int height, int depth) {
|
|
final int z = idx / (width * height);
|
|
idx -= (z * width * height);
|
|
final int y = idx / width;
|
|
final int x = idx % width;
|
|
return new Vec(x, y, z);
|
|
}
|
|
}
|