CraftMapAPI.java

package com.platymuus.bukkit.mapapi;

import net.minecraft.server.EntityPlayer;
import net.minecraft.server.ItemStack;
import net.minecraft.server.Item;
import net.minecraft.server.Packet;
import net.minecraft.server.WorldMap;
import net.minecraft.server.Packet131;

import org.bukkit.Material;
import org.bukkit.World;
import org.bukkit.craftbukkit.CraftWorld;
import org.bukkit.craftbukkit.entity.CraftPlayer;
import org.bukkit.entity.Player;

/**
 * Map API implementation for CraftBukkit. Do not use directly.
 */
public final class CraftMapAPI extends MapAPI {
    
    protected CraftMapAPI() {}

    @Override
    public void sendRawData(Player player, short mapId, byte[] data) {
        Packet packet = new Packet131((short) Material.MAP.getId(), mapId, data);
        EntityPlayer entity = ((CraftPlayer) player).getHandle();
        entity.netServerHandler.sendPacket(packet);
    }

    @Override
    public void sendMap(Player player, short mapId, byte[] data) {
        for (int col = 0; col < 128; ++col) {
            byte[] raw = new byte[131];
            raw[0] = 0;
            raw[1] = (byte) col;
            raw[2] = 0;
            
            for (int row = 0; row < 128; ++row) {
                raw[3 + row] = data[row * 128 + col];
            }
            
            sendRawData(player, mapId, raw);
        }
    }

    @Override
    public void saveMap(World world, short mapId, MapInfo info) {
        WorldMap worldMap = getWorldMap(world, mapId);
        worldMap.b = info.getX();
        worldMap.c = info.getZ();
        worldMap.e = info.getScale();
        worldMap.f = info.getData();
        worldMap.a();
    }

    @Override
    public MapInfo loadMap(World world, short mapId) {
        WorldMap worldMap = getWorldMap(world, mapId);
        return new MapInfo(worldMap.b, worldMap.c, worldMap.e, worldMap.f);
    }
    
    private WorldMap getWorldMap(World world, short mapId) {
        ItemStack nmsStack = new ItemStack(Material.MAP.getId(), 1, mapId);
        net.minecraft.server.World nmsWorld = ((CraftWorld) world).getHandle();
        return Item.MAP.a(nmsStack, nmsWorld);
    }
    
}