Mod bugfixes

core/src/mindustry/world/blocks/distribution/Duct.java

@@ -6,6 +6,7 @@ import arc.math.*;
 import arc.math.geom.*;
 import arc.struct.*;
 import arc.util.*;
+import arc.util.io.*;
 import mindustry.annotations.Annotations.*;
 import mindustry.content.*;
 import mindustry.entities.units.*;
@@ -183,5 +184,25 @@ public class Duct extends Block implements Autotiler{
             next = front();
             nextc = next instanceof DuctBuild d ? d : null;
         }
+
+        @Override
+        public byte version(){
+            return 1;
+        }
+
+        @Override
+        public void write(Writes write){
+            super.write(write);
+            write.b(recDir);
+        }
+
+        @Override
+        public void read(Reads read, byte revision){
+            super.read(read, revision);
+            if(revision >= 1){
+                recDir = read.b();
+            }
+            current = items.first();
+        }
     }
 }

core/src/mindustry/world/blocks/distribution/DuctRouter.java

@@ -87,7 +87,7 @@ public class DuctRouter extends Block{
             if(current == null) return null;
 
             for(int i = -1; i <= 1; i++){
-                Building other = nearby(Mathf.mod(rotation + i + cdump, 4));
+                Building other = nearby(Mathf.mod(rotation + (((i + cdump + 1) % 3) - 1), 4));
                 if(other != null && other.team == team && other.acceptItem(this, current)){
                     return other;
                 }