Persistent unit IDs

core/src/mindustry/io/versions/LegacyIO.java

@@ -0,0 +1,84 @@
+package mindustry.io.versions;
+
+import arc.*;
+import arc.struct.*;
+import arc.util.*;
+import mindustry.*;
+import mindustry.ctype.*;
+import mindustry.ui.dialogs.JoinDialog.*;
+
+import java.io.*;
+
+public class LegacyIO{
+    /** Maps old unit names to new ones. */
+    public static final StringMap unitMap = StringMap.of(
+    "titan", "mace",
+    "chaos-array", "scepter",
+    "eradicator", "reign",
+    "eruptor", "atrax",
+    "wraith", "flare",
+    "ghoul", "horizon",
+    "revenant", "zenith",
+    "lich", "antumbra",
+    "reaper", "eclipse",
+    "draug", "mono",
+    "phantom", "poly",
+    "spirit", "poly"
+    );
+
+    public static Seq<Server> readServers(){
+        Seq<Server> arr = new Seq<>();
+
+        try{
+            byte[] bytes = Core.settings.getBytes("server-list");
+            DataInputStream stream = new DataInputStream(new ByteArrayInputStream(bytes));
+
+            int length = stream.readInt();
+            if(length > 0){
+                //name of type, irrelevant
+                stream.readUTF();
+
+                for(int i = 0; i < length; i++){
+                    Server server = new Server();
+                    server.ip = stream.readUTF();
+                    server.port = stream.readInt();
+                    arr.add(server);
+                }
+            }
+        }catch(Exception e){
+            e.printStackTrace();
+        }
+        return arr;
+    }
+
+    public static void readResearch(){
+        try{
+            byte[] bytes = Core.settings.getBytes("unlocks");
+            DataInputStream stream = new DataInputStream(new ByteArrayInputStream(bytes));
+
+            int length = stream.readInt();
+            if(length > 0){
+                stream.readUTF(); //name of key type
+                stream.readUTF(); //name of value type
+
+                //each element is an array list
+                for(int i = 0; i < length; i++){
+                    ContentType type = ContentType.all[stream.readInt()];
+                    int arrLength = stream.readInt();
+                    if(arrLength > 0){
+                        stream.readUTF(); //type of contents (String)
+                        for(int j = 0; j < arrLength; j++){
+                            String name = stream.readUTF();
+                            Content out = Vars.content.getByName(type, name);
+                            if(out instanceof UnlockableContent u){
+                                u.quietUnlock();
+                            }
+                        }
+                    }
+                }
+            }
+        }catch(Exception e){
+            Log.err(e);
+        }
+    }
+}