less instant disconnect, more broken multiplayer

core/src/mindustry/core/NetServer.java

@@ -633,7 +633,10 @@ public class NetServer implements ApplicationListener{
             }
 
             //reset player to previous synced position so it gets interpolated
-            unit.set(prevx, prevy);
+            //the server does not interpolate
+            if(!headless){
+                unit.set(prevx, prevy);
+            }
 
             //write sync data to the buffer
             fbuffer.limit(20);

core/src/mindustry/entities/comp/UnitComp.java

@@ -127,12 +127,12 @@ abstract class UnitComp implements Healthc, Physicsc, Hitboxc, Statusc, Teamc, I
     public void afterSync(){
         //set up type info after reading
         setStats(this.type);
+        controller.unit(this);
     }
 
     @Override
     public void afterRead(){
-        //set up type info after reading
-        setStats(this.type);
+        afterSync();
     }
 
     @Override

core/src/mindustry/entities/units/AIController.java

@@ -49,6 +49,8 @@ public class AIController implements UnitController{
 
     @Override
     public void unit(Unitc unit){
+        if(this.unit == unit) return;
+
         this.unit = unit;
         init();
     }