Implemented save time recording

core/src/io/anuke/mindustry/io/SaveFileVersion.java

@@ -15,12 +15,13 @@ public abstract class SaveFileVersion{
 
     public SaveMeta getData(DataInputStream stream) throws IOException{
         long time = stream.readLong(); //read last saved time
+        long playtime = stream.readLong();
         int build = stream.readInt();
         byte mode = stream.readByte(); //read the gamemode
         String map = stream.readUTF(); //read the map
         int wave = stream.readInt(); //read the wave
         byte difficulty = stream.readByte(); //read the difficulty
-        return new SaveMeta(version, time, build, mode, map, wave, Difficulty.values()[difficulty]);
+        return new SaveMeta(version, time, playtime, build, mode, map, wave, Difficulty.values()[difficulty]);
     }
 
     public abstract void read(DataInputStream stream) throws IOException;

core/src/io/anuke/mindustry/io/SaveMeta.java

@@ -13,15 +13,17 @@ public class SaveMeta{
     public int version;
     public int build;
     public String date;
+    public long timePlayed;
     public GameMode mode;
     public Map map;
     public int wave;
     public Difficulty difficulty;
 
-    public SaveMeta(int version, long date, int build, int mode, String map, int wave, Difficulty difficulty){
+    public SaveMeta(int version, long date, long timePlayed, int build, int mode, String map, int wave, Difficulty difficulty){
         this.version = version;
         this.build = build;
         this.date = Platform.instance.format(new Date(date));
+        this.timePlayed = timePlayed;
         this.mode = GameMode.values()[mode];
         this.map = world.maps().getByName(map);
         this.wave = wave;

core/src/io/anuke/mindustry/io/versions/Save16.java

@@ -25,8 +25,7 @@ import java.io.DataInputStream;
 import java.io.DataOutputStream;
 import java.io.IOException;
 
-import static io.anuke.mindustry.Vars.state;
-import static io.anuke.mindustry.Vars.world;
+import static io.anuke.mindustry.Vars.*;
 
 public class Save16 extends SaveFileVersion{
 
@@ -37,6 +36,7 @@ public class Save16 extends SaveFileVersion{
     @Override
     public void read(DataInputStream stream) throws IOException{
         stream.readLong(); //time
+        stream.readLong(); //total playtime
         stream.readInt(); //build
 
         //general state
@@ -154,6 +154,7 @@ public class Save16 extends SaveFileVersion{
         //--META--
         stream.writeInt(version); //version id
         stream.writeLong(TimeUtils.millis()); //last saved
+        stream.writeLong(headless ? 0 : control.getSaves().getTotalPlaytime()); //playtime
         stream.writeInt(Version.build); //build
 
         //--GENERAL STATE--