core/src/ru/deadsoftware/cavecraft/game/GameSaver.java

   1 package ru.deadsoftware.cavecraft.game;
   2
   3 import com.badlogic.gdx.Gdx;
   4 import com.badlogic.gdx.files.FileHandle;
   5 import com.badlogic.gdx.utils.ArrayMap;
   6 import ru.deadsoftware.cavecraft.CaveGame;
   7
   8 import java.io.*;
   9 import java.nio.ByteBuffer;
  10
  11 public class GameSaver {
  12
  13     private static final int VERSION = 0;
  14
  15     private static byte[] intToBytes(int i) {
  16         return ByteBuffer.allocate(4).putInt(i).array();
  17     }
  18
  19     private static void saveMap(FileHandle file, int[][] map) throws IOException{
  20         int rl,bl;
  21         int width = map.length;
  22         int height = map[0].length;
  23         BufferedOutputStream out = new BufferedOutputStream(file.write(false));
  24         out.write(intToBytes(VERSION));
  25         out.write(intToBytes(width));
  26         out.write(intToBytes(height));
  27         for (int y=0; y<map[0].length; y++) {
  28             bl = map[0][y];
  29             rl=0;
  30             for (int x=0; x<map.length; x++) {
  31                 if (map[x][y]!=bl) {
  32                     out.write(intToBytes(rl));
  33                     out.write(intToBytes(bl));
  34                     rl=0;
  35                     bl=map[x][y];
  36                 }
  37                 rl++;
  38             }
  39             out.write(intToBytes(rl));
  40             out.write(intToBytes(bl));
  41         }
  42         out.flush();
  43         out.close();
  44     }
  45
  46     private static int[][] loadMap(FileHandle file) throws Exception {
  47         int[][] map;
  48         int ver, width, height;
  49         int rl,bl;
  50         DataInputStream in = new DataInputStream(file.read());
  51         ver = in.readInt();
  52         if (VERSION == ver) {
  53             width = in.readInt();
  54             height = in.readInt();
  55             map = new int[width][height];
  56             for (int y=0; y<height; y++) {
  57                 for (int x=0; x<width; x+=rl) {
  58                     rl = in.readInt();
  59                     bl = in.readInt();
  60                     for (int i=x; i<x+rl; i++) map[i][y] = bl;
  61                 }
  62             }
  63             in.close();
  64         } else throw new Exception("version mismatch");
  65         return map;
  66     }
  67
  68     public static GameProc load() {
  69         FileHandle file = Gdx.files.absolute(CaveGame.GAME_FOLDER+"/saves/game.sav");
  70         GameProc gameProc = null;
  71         try {
  72             ObjectInputStream in = new ObjectInputStream(file.read());
  73             int ver = in.readInt();
  74             if (VERSION == ver) gameProc = (GameProc)in.readObject();
  75                 else throw new Exception("version mismatch");
  76             in.close();
  77             gameProc.world = new GameWorld();
  78             gameProc.world.setMaps(
  79                     loadMap(Gdx.files.absolute(CaveGame.GAME_FOLDER + "/saves/foremap.sav")),
  80                     loadMap(Gdx.files.absolute(CaveGame.GAME_FOLDER + "/saves/backmap.sav"))
  81             );
  82             gameProc.world.metaMap = new ArrayMap<String, Integer>();
  83             gameProc.physics = new GamePhysics(gameProc);
  84             gameProc.resetRenderer();
  85         } catch (Exception e) {
  86             Gdx.app.error("GameSaver",e.getMessage(),e);
  87             Gdx.app.exit();
  88         }
  89         return gameProc;
  90     }
  91
  92     public static void save(GameProc gameProc) {
  93         FileHandle file = Gdx.files.absolute(CaveGame.GAME_FOLDER+"/saves/");
  94         file.mkdirs();
  95         file = Gdx.files.absolute(CaveGame.GAME_FOLDER+"/saves/game.sav");
  96         try {
  97             ObjectOutputStream out = new ObjectOutputStream(file.write(false));
  98             out.writeInt(VERSION);
  99             out.writeObject(gameProc);
 100             out.close();
 101             saveMap(Gdx.files.absolute(CaveGame.GAME_FOLDER+"/saves/foremap.sav"), gameProc.world.getFullForeMap());
 102             saveMap(Gdx.files.absolute(CaveGame.GAME_FOLDER+"/saves/backmap.sav"), gameProc.world.getFullBackMap());
 103         } catch (Exception e) {
 104             e.printStackTrace();
 105         }
 106     }
 107
 108     public static boolean exists() {
 109         return (Gdx.files.absolute(CaveGame.GAME_FOLDER+"/saves/game.sav").exists() &&
 110                 Gdx.files.absolute(CaveGame.GAME_FOLDER+"/saves/foremap.sav").exists() &&
 111                 Gdx.files.absolute(CaveGame.GAME_FOLDER+"/saves/backmap.sav").exists());
 112     }
 113
 114 }