Progress on sector state

core/src/mindustry/io/SaveVersion.java

@@ -39,7 +39,7 @@ public abstract class SaveVersion extends SaveFileReader{
             map.get("mapname"),
             map.getInt("wave"),
             JsonIO.read(Rules.class, map.get("rules", "{}")),
-            JsonIO.read(Stats.class, map.get("stats", "{}")).exportRates(),
+            JsonIO.read(SectorInfo.class, map.get("secinfo", "{}")),
             map
         );
     }
@@ -70,6 +70,11 @@ public abstract class SaveVersion extends SaveFileReader{
     }
 
     public void writeMeta(DataOutput stream, StringMap tags) throws IOException{
+        //prepare campaign data for writing
+        if(state.isCampaign()){
+            state.secinfo.prepare();
+        }
+
         writeStringMap(stream, StringMap.of(
             "saved", Time.millis(),
             "playtime", headless ? 0 : control.saves.getTotalPlaytime(),
@@ -78,6 +83,7 @@ public abstract class SaveVersion extends SaveFileReader{
             "wave", state.wave,
             "wavetime", state.wavetime,
             "stats", JsonIO.write(state.stats),
+            "secinfo", state.isCampaign() ? JsonIO.write(state.secinfo) : "{}",
             "rules", JsonIO.write(state.rules),
             "mods", JsonIO.write(mods.getModStrings().toArray(String.class)),
             "width", world.width(),
@@ -94,6 +100,7 @@ public abstract class SaveVersion extends SaveFileReader{
         state.wave = map.getInt("wave");
         state.wavetime = map.getFloat("wavetime", state.rules.waveSpacing);
         state.stats = JsonIO.read(Stats.class, map.get("stats", "{}"));
+        state.secinfo = JsonIO.read(SectorInfo.class, map.get("secinfo", "{}"));
         state.rules = JsonIO.read(Rules.class, map.get("rules", "{}"));
         if(state.rules.spawns.isEmpty()) state.rules.spawns = defaultWaves.get();
         lastReadBuild = map.getInt("build", -1);