128 lines
4.3 KiB
Java
128 lines
4.3 KiB
Java
package net.minecraft.world.level;
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import com.google.common.base.Suppliers;
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import java.util.List;
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import java.util.function.Supplier;
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import net.minecraft.core.BlockPos;
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import net.minecraft.core.Holder;
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import net.minecraft.core.SectionPos;
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import net.minecraft.core.registries.Registries;
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import net.minecraft.world.entity.Entity;
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import net.minecraft.world.level.biome.Biome;
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import net.minecraft.world.level.biome.Biomes;
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import net.minecraft.world.level.block.Blocks;
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import net.minecraft.world.level.block.entity.BlockEntity;
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import net.minecraft.world.level.block.state.BlockState;
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import net.minecraft.world.level.border.WorldBorder;
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import net.minecraft.world.level.chunk.ChunkAccess;
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import net.minecraft.world.level.chunk.ChunkSource;
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import net.minecraft.world.level.chunk.EmptyLevelChunk;
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import net.minecraft.world.level.material.FluidState;
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import net.minecraft.world.level.material.Fluids;
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import net.minecraft.world.phys.AABB;
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import net.minecraft.world.phys.shapes.VoxelShape;
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import org.jetbrains.annotations.Nullable;
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public class PathNavigationRegion implements CollisionGetter {
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protected final int centerX;
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protected final int centerZ;
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protected final ChunkAccess[][] chunks;
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protected boolean allEmpty;
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protected final Level level;
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private final Supplier<Holder<Biome>> plains;
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public PathNavigationRegion(Level level, BlockPos centerPos, BlockPos offsetPos) {
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this.level = level;
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this.plains = Suppliers.memoize(() -> level.registryAccess().lookupOrThrow(Registries.BIOME).getOrThrow(Biomes.PLAINS));
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this.centerX = SectionPos.blockToSectionCoord(centerPos.getX());
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this.centerZ = SectionPos.blockToSectionCoord(centerPos.getZ());
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int i = SectionPos.blockToSectionCoord(offsetPos.getX());
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int j = SectionPos.blockToSectionCoord(offsetPos.getZ());
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this.chunks = new ChunkAccess[i - this.centerX + 1][j - this.centerZ + 1];
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ChunkSource chunkSource = level.getChunkSource();
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this.allEmpty = true;
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for (int k = this.centerX; k <= i; k++) {
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for (int l = this.centerZ; l <= j; l++) {
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this.chunks[k - this.centerX][l - this.centerZ] = chunkSource.getChunkNow(k, l);
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}
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}
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for (int k = SectionPos.blockToSectionCoord(centerPos.getX()); k <= SectionPos.blockToSectionCoord(offsetPos.getX()); k++) {
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for (int l = SectionPos.blockToSectionCoord(centerPos.getZ()); l <= SectionPos.blockToSectionCoord(offsetPos.getZ()); l++) {
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ChunkAccess chunkAccess = this.chunks[k - this.centerX][l - this.centerZ];
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if (chunkAccess != null && !chunkAccess.isYSpaceEmpty(centerPos.getY(), offsetPos.getY())) {
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this.allEmpty = false;
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return;
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}
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}
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}
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}
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private ChunkAccess getChunk(BlockPos pos) {
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return this.getChunk(SectionPos.blockToSectionCoord(pos.getX()), SectionPos.blockToSectionCoord(pos.getZ()));
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}
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private ChunkAccess getChunk(int x, int z) {
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int i = x - this.centerX;
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int j = z - this.centerZ;
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if (i >= 0 && i < this.chunks.length && j >= 0 && j < this.chunks[i].length) {
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ChunkAccess chunkAccess = this.chunks[i][j];
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return (ChunkAccess)(chunkAccess != null ? chunkAccess : new EmptyLevelChunk(this.level, new ChunkPos(x, z), (Holder<Biome>)this.plains.get()));
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} else {
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return new EmptyLevelChunk(this.level, new ChunkPos(x, z), (Holder<Biome>)this.plains.get());
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}
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}
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@Override
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public WorldBorder getWorldBorder() {
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return this.level.getWorldBorder();
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}
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@Override
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public BlockGetter getChunkForCollisions(int chunkX, int chunkZ) {
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return this.getChunk(chunkX, chunkZ);
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}
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@Override
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public List<VoxelShape> getEntityCollisions(@Nullable Entity entity, AABB collisionBox) {
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return List.of();
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}
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@Nullable
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@Override
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public BlockEntity getBlockEntity(BlockPos pos) {
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ChunkAccess chunkAccess = this.getChunk(pos);
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return chunkAccess.getBlockEntity(pos);
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}
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@Override
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public BlockState getBlockState(BlockPos pos) {
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if (this.isOutsideBuildHeight(pos)) {
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return Blocks.AIR.defaultBlockState();
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} else {
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ChunkAccess chunkAccess = this.getChunk(pos);
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return chunkAccess.getBlockState(pos);
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}
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}
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@Override
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public FluidState getFluidState(BlockPos pos) {
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if (this.isOutsideBuildHeight(pos)) {
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return Fluids.EMPTY.defaultFluidState();
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} else {
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ChunkAccess chunkAccess = this.getChunk(pos);
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return chunkAccess.getFluidState(pos);
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}
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}
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@Override
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public int getMinY() {
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return this.level.getMinY();
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}
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@Override
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public int getHeight() {
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return this.level.getHeight();
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}
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}
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