payloadRotation field (#6294)

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

@@ -61,6 +61,7 @@ abstract class BuildingComp implements Posc, Teamc, Healthc, Buildingc, Timerc,
     transient boolean updateFlow;
     transient byte cdump;
     transient int rotation;
+    transient float payloadRotation;
     transient boolean enabled = true;
     transient float enabledControlTime;
     transient String lastAccessed;

core/src/mindustry/world/blocks/payloads/BuildPayload.java

@@ -80,6 +80,7 @@ public class BuildPayload implements Payload{
     @Override
     public void set(float x, float y, float rotation){
         build.set(x, y);
+        build.payloadRotation = rotation;
     }
 
     @Override