trackoffical_app/lib/service/app_map.dart

import 'dart:convert';
import 'dart:ui';
import 'package:dio/dio.dart';
import 'package:f_cache/f_cache.dart';
import 'package:trackoffical_app/appcore/map_package.dart';
import 'package:trackoffical_app/model/game_map.dart';
import '../logger.dart';
import '../model/m_net_image.dart';
import 'api.dart' as api;
import '../appcore/ffi.dart' as ffi;


extension GameMapExtension on GameMap{

  Future<void> loadMemory({
    required ProgressCallback onReceiveProgress
  }) async{

    if (isLoaded){
      return;
    }
    final image = MNetImage()
      ..md5=md5
    ;

    // data = await image.loadMemory(onReceiveProgress: onReceiveProgress);
    // debug('[加载地图](${image.md5Hex}) \n文件类型：${image.ext}\n 文件大小${data?.length}');

    final r = await CacheManager().getCached( id: image.md5Hex!, onProcess: onReceiveProgress, readerBuilder: () async{
      final bin = await api.ApiService.to.getBinReaderByMd5(md5);
      final reader = bin.reader;
      reader.meta['nonce']=bin.nonce;
      reader.ext=bin.ext;
      return bin.reader;
    });
    data = r.data;
    image.ext = r.ext??'';
    final nonceStr = r.meta['nonce']??'';
    final nonce = base64Decode(nonceStr);
    debug('解密地图');
    data=await ffi.Crypto(bridge: ffi.api).decrypt(nonce: nonce, data: data!);
    info('解密成功');


    debug('[加载地图](${image.md5Hex}) \n文件类型：${image.ext}\n 文件大小${data?.length}');


    if(image.ext != 'zip'){
      throw const FormatException('不是zip');
    }

    final mp = MapPackage();
    await mp.loadMemory(data!);
    final size = await mp.dstSize;
    pic = await mp.mapImageData;

    debug('[加载地图]解压完成');

    data = null;

    height = size.height;
    width = size.width;
    mapPackage = mp;
    const p0Src = Offset(0, 0);
    final p1Src = Offset(width, 0);
    final mapTopLeftLocation = await pixelToWorld(p0Src);
    final mapTopRightLocation = await pixelToWorld(p1Src);
    mapWidth = mapTopLeftLocation.distance(mapTopRightLocation);

    isLoaded = true;
    debug('[加载地图] 加载完成\n尺寸: ($width, $height)\n宽度：$mapWidth');
    return;
  }
}