/* * Copyright 2018 the original author or authors. * Licensed under the Apache License, Version 2.0 (the "License"); you may not * use this file except in compliance with the License. You may obtain a copy of * the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by * applicable law or agreed to in writing, software distributed under the * License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS * OF ANY KIND, either express or implied. See the License for the specific * language governing permissions and limitations under the License. */ package com.github.drinkjava2.frog.egg; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.IOException; import java.io.ObjectInputStream; import java.io.ObjectOutputStream; import java.util.Collections; import java.util.Comparator; import java.util.List; import com.github.drinkjava2.frog.Application; import com.github.drinkjava2.frog.Env; import com.github.drinkjava2.frog.Frog; import com.github.drinkjava2.frog.brain.organ.Chance; import com.github.drinkjava2.frog.brain.organ.Eye; import com.github.drinkjava2.frog.util.FrogFileUtils; /** * EggTool save eggs to disk * * @author Yong Zhu * @since 1.0 */ public class EggTool { /** * Frogs which have higher energy lay eggs * * 利用Java串行机制存盘。 能量多(也就是吃的更多)的Frog下蛋并存盘, 以进行下一轮测试,能量少的Frog被淘汰,没有下蛋的资格。 * 用能量的多少来简化生存竟争模拟,每次下蛋数量固定为EGG_QTY个 */ public static void layEggs() { sortFrogsOrderByEnergyDesc(); Frog first = Env.frogs.get(0); Frog last = Env.frogs.get(Env.frogs.size() - 1); try { Env.eggs.clear(); for (int i = 0; i < Env.EGG_QTY; i++) Env.eggs.add(new Egg(Env.frogs.get(i))); FileOutputStream fo = new FileOutputStream(Application.CLASSPATH + "eggs.ser"); ObjectOutputStream so = new ObjectOutputStream(fo); so.writeObject(Env.eggs); so.close(); System.out.print("\r1st frog has " + first.organs.size() + " organs, energy=" + first.energy ); System.out.println(", Last frog has " + last.organs.size() + " organs, energy=" + last.energy); System.out.println("Saved "+Env.eggs.size() +" eggs to file '" + Application.CLASSPATH + "eggs.ser'"); } catch (IOException e) { System.out.println(e); } } private static void sortFrogsOrderByEnergyDesc() {// 按能量多少给青蛙排序 Collections.sort(Env.frogs, new Comparator<Frog>() { public int compare(Frog a, Frog b) { if (a.energy > b.energy) return -1; else if (a.energy == b.energy) return 0; else return 1; } }); } public static void deleteEggs() { System.out.println("Delete exist egg file: '" + Application.CLASSPATH + "eggs.ser'"); FrogFileUtils.deleteFile(Application.CLASSPATH + "eggs.ser"); } /** * 从磁盘读入一批Egg */ @SuppressWarnings("unchecked") public static void loadEggs() { boolean errorfound = false; try { FileInputStream eggsFile = new FileInputStream(Application.CLASSPATH + "eggs.ser"); ObjectInputStream eggsInputStream = new ObjectInputStream(eggsFile); Env.eggs = (List<Egg>) eggsInputStream.readObject(); System.out.println( "Loaded " + Env.eggs.size() + " eggs from file '" + Application.CLASSPATH + "eggs.ser" + "'.\n"); eggsInputStream.close(); } catch (Exception e) { errorfound = true; } if (errorfound) { Env.eggs.clear(); for (int j = 0; j < Env.EGG_QTY; j++) Env.eggs.add(new Egg()); System.out.println("Fail to load egg file at path '" + Application.CLASSPATH + "', created " + Env.eggs.size() + " eggs to do test.\n"); } } }