[General] Make ID_OBJECT_PLACE take effect only when sent back by server

apps/openmw-mp/processors/world/ProcessorObjectPlace.hpp

@@ -25,6 +25,9 @@ namespace mwmp
                 event.objectChanges.objects.at(i).mpNum = mwmp::Networking::getPtr()->getNextMpNum();
             }
 
+            // Send this packet back to the original sender with the mpNum generation from above,
+            // then send it to the other players
+            packet.Send(false);
             packet.Send(true);
 
             Script::Call<Script::CallbackIdentity("OnObjectPlace")>(player.getId(), event.cell.getDescription().c_str());

apps/openmw/mwgui/hud.cpp

@@ -95,6 +95,17 @@ namespace MWGui
                 End of tes3mp addition
             */
 
+            /*
+                Start of tes3mp change (major)
+
+                Instead of actually keeping this object as is, delete it after sending the packet
+                and wait for the server to send it back with the correct mpNum
+            */
+            MWBase::Environment::get().getWorld()->deleteObject(dropped);
+            /*
+                End of tes3mp change (major)
+            */
+
             return dropped;
         }
 

apps/openmw/mwscript/transformationextensions.cpp

@@ -581,6 +581,17 @@ namespace MWScript
                         /*
                             End of tes3mp addition
                         */
+
+                        /*
+                            Start of tes3mp change (major)
+
+                            Instead of actually keeping this object as is, delete it after sending the packet
+                            and wait for the server to send it back with the correct mpNum
+                        */
+                        MWBase::Environment::get().getWorld()->deleteObject(ptr);
+                        /*
+                            End of tes3mp change (major)
+                        */
                     }
                 }
         };