85 lines
3 KiB
Java
85 lines
3 KiB
Java
package net.minecraft.network.protocol.game;
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import it.unimi.dsi.fastutil.shorts.ShortIterator;
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import it.unimi.dsi.fastutil.shorts.ShortSet;
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import java.util.function.BiConsumer;
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import net.minecraft.core.BlockPos;
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import net.minecraft.core.SectionPos;
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import net.minecraft.network.FriendlyByteBuf;
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import net.minecraft.network.codec.StreamCodec;
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import net.minecraft.network.protocol.Packet;
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import net.minecraft.network.protocol.PacketType;
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import net.minecraft.world.level.block.Block;
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import net.minecraft.world.level.block.state.BlockState;
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import net.minecraft.world.level.chunk.LevelChunkSection;
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public class ClientboundSectionBlocksUpdatePacket implements Packet<ClientGamePacketListener> {
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public static final StreamCodec<FriendlyByteBuf, ClientboundSectionBlocksUpdatePacket> STREAM_CODEC = Packet.codec(
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ClientboundSectionBlocksUpdatePacket::write, ClientboundSectionBlocksUpdatePacket::new
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);
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private static final int POS_IN_SECTION_BITS = 12;
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private final SectionPos sectionPos;
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private final short[] positions;
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private final BlockState[] states;
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public ClientboundSectionBlocksUpdatePacket(SectionPos sectionPos, ShortSet positions, LevelChunkSection section) {
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this.sectionPos = sectionPos;
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int i = positions.size();
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this.positions = new short[i];
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this.states = new BlockState[i];
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int j = 0;
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for (ShortIterator var6 = positions.iterator(); var6.hasNext(); j++) {
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short s = (Short)var6.next();
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this.positions[j] = s;
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this.states[j] = section.getBlockState(SectionPos.sectionRelativeX(s), SectionPos.sectionRelativeY(s), SectionPos.sectionRelativeZ(s));
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}
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}
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private ClientboundSectionBlocksUpdatePacket(FriendlyByteBuf buffer) {
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this.sectionPos = SectionPos.of(buffer.readLong());
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int i = buffer.readVarInt();
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this.positions = new short[i];
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this.states = new BlockState[i];
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for (int j = 0; j < i; j++) {
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long l = buffer.readVarLong();
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this.positions[j] = (short)(l & 4095L);
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this.states[j] = Block.BLOCK_STATE_REGISTRY.byId((int)(l >>> 12));
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}
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}
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/**
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* Writes the raw packet data to the data stream.
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*/
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private void write(FriendlyByteBuf buffer) {
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buffer.writeLong(this.sectionPos.asLong());
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buffer.writeVarInt(this.positions.length);
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for (int i = 0; i < this.positions.length; i++) {
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buffer.writeVarLong((long)Block.getId(this.states[i]) << 12 | this.positions[i]);
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}
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}
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@Override
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public PacketType<ClientboundSectionBlocksUpdatePacket> type() {
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return GamePacketTypes.CLIENTBOUND_SECTION_BLOCKS_UPDATE;
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}
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/**
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* Passes this Packet on to the NetHandler for processing.
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*/
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public void handle(ClientGamePacketListener handler) {
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handler.handleChunkBlocksUpdate(this);
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}
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public void runUpdates(BiConsumer<BlockPos, BlockState> consumer) {
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BlockPos.MutableBlockPos mutableBlockPos = new BlockPos.MutableBlockPos();
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for (int i = 0; i < this.positions.length; i++) {
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short s = this.positions[i];
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mutableBlockPos.set(this.sectionPos.relativeToBlockX(s), this.sectionPos.relativeToBlockY(s), this.sectionPos.relativeToBlockZ(s));
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consumer.accept(mutableBlockPos, this.states[i]);
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}
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}
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}
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