render a map and save as image

HumanRenderer.java

import com.mojang.authlib.GameProfile;
import net.minecraft.core.BlockPosition;
import net.minecraft.world.entity.player.EntityHuman;
import net.minecraft.world.item.ItemWorldMap;
import net.minecraft.world.item.Items;
import net.minecraft.world.level.saveddata.maps.WorldMap;
import org.bukkit.Bukkit;
import org.bukkit.Chunk;
import org.bukkit.craftbukkit.v1_17_R1.CraftWorld;
import org.bukkit.craftbukkit.v1_17_R1.map.CraftMapView;
import org.bukkit.map.MapView;
import org.jetbrains.annotations.NotNull;

import java.awt.image.BufferedImage;
import java.lang.reflect.Field;
import java.util.ArrayList;
import java.util.UUID;

public class HumanRenderer extends EntityHuman {

    public static final UUID ID = UUID.randomUUID();
    public static final String NAME = "_____MapUpdater_____";

    private final int x;
    private final int y;

    public HumanRenderer(World world, int x, int z) {
        super(
                ((CraftWorld) world).getHandle(),
                new BlockPosition(x, 64, z),
                0,
                new GameProfile(ID, NAME)
        );
        this.arena = arena;
        this.x = x;
        this.y = z;
    }

    @Override
    public boolean isCreative() {
        return false;
    }

    @Override
    public boolean isSpectator() {
        return false;
    }

    public BufferedImage render(@NotNull MapView mapView, int radius) {
        BufferedImage image = new BufferedImage(128, 128, BufferedImage.TYPE_INT_RGB);

        mapView.setCenterX(x);
        mapView.setCenterZ(y);

        ArrayList<Chunk> chunks = new ArrayList<>();
        Chunk center = arena.getCenter().getChunk();

        for (int x = center.getX() - radius; x <= center.getX() + radius; x++) {
            for (int z = center.getZ() - radius; z <= center.getZ() + radius; z++) {
                Chunk chunk = mapView.getWorld().getChunkAt(x, z);
                chunk.addPluginChunkTicket(arena.getPlugin());
                chunks.add(chunk);
            }
        }

        Bukkit.getScheduler().scheduleSyncDelayedTask(arena.getPlugin(), () -> {
            try {
                Field field = CraftMapView.class.getDeclaredField("worldMap");
                field.setAccessible(true);
                WorldMap worldMap = (WorldMap) field.get(mapView);

                int size = 128 << mapView.getScale().ordinal();

                for (int x = this.x - size / 2; x <= this.x + size / 2; x += 16) {
                    for (int z = this.y - size / 2; z <= this.y + size / 2; z += 16) {
                        setPositionRaw(x, 64, z);
                        ((ItemWorldMap) Items.pp).a(getWorld(), this, worldMap);
                    }
                }

                for (int x = 0; x < 128; x++)
                    for (int y = 0; y < 128; y++)
                        image.setRGB(x, y, worldMap.g[y * 128 + x]);
            } catch (Exception e) {
                e.printStackTrace();
            }

            for (Chunk c : chunks)
                c.removePluginChunkTicket(arena.getPlugin());
        }, 5);

        return image;
    }
}