- added polyobject serializer.

- added sanity checks to prevent a savegame from being loaded with an incompatible map
- refactored a few things to simplify serialization.
- started work on main level serializer function.

src/am_map.cpp

@@ -38,7 +38,7 @@
 #include "gi.h"
 #include "p_setup.h"
 #include "c_bind.h"
-#include "farchive.h"
+#include "serializer.h"
 #include "r_renderer.h"
 #include "r_sky.h"
 #include "sbar.h"
@@ -3106,13 +3106,14 @@ void AM_Drawer ()
 //
 //=============================================================================
 
-void AM_SerializeMarkers(FArchive &arc)
+void AM_SerializeMarkers(FSerializer &arc)
 {
-	arc << markpointnum;
-	for (int i=0; i<AM_NUMMARKPOINTS; i++)
+	if (arc.BeginObject("automarkers"))
 	{
-		arc << markpoints[i].x << markpoints[i].y;
+		arc("markpointnum", markpointnum)
+			.Array("markpoints", &markpoints[0].x, AM_NUMMARKPOINTS*2)	// write as a double array.
+			("scale_mtof", scale_mtof)
+			("scale_ftom", scale_ftom)
+			.EndObject();
 	}
-	arc << scale_mtof;
-	arc << scale_ftom; 
 }