Code/net/minecraft/server/level/SimulationChunkTracker.java

package net.minecraft.server.level;

import it.unimi.dsi.fastutil.longs.Long2ByteMap;
import it.unimi.dsi.fastutil.longs.Long2ByteOpenHashMap;
import net.minecraft.world.level.ChunkPos;
import net.minecraft.world.level.TicketStorage;

public class SimulationChunkTracker extends ChunkTracker {
    public static final int MAX_LEVEL = 33;
    protected final Long2ByteMap chunks = new Long2ByteOpenHashMap();
    private final TicketStorage ticketStorage;

    public SimulationChunkTracker(TicketStorage p_395447_) {
        super(34, 16, 256);
        this.ticketStorage = p_395447_;
        p_395447_.setSimulationChunkUpdatedListener(this::update);
        this.chunks.defaultReturnValue((byte)33);
    }

    @Override
    protected int getLevelFromSource(long p_395160_) {
        return this.ticketStorage.getTicketLevelAt(p_395160_, true);
    }

    public int getLevel(ChunkPos p_396184_) {
        return this.getLevel(p_396184_.toLong());
    }

    @Override
    protected int getLevel(long p_397279_) {
        return this.chunks.get(p_397279_);
    }

    @Override
    protected void setLevel(long p_393143_, int p_394676_) {
        if (p_394676_ >= 33) {
            this.chunks.remove(p_393143_);
        } else {
            this.chunks.put(p_393143_, (byte)p_394676_);
        }
    }

    public void runAllUpdates() {
        this.runUpdates(Integer.MAX_VALUE);
    }
}