Several generators are "sorta parameterized" -- make ready for that.

The VUX, Utwig, Melnorme and others all have branching paths
on the actual `XXX_DEFINED` enum value.  This is an ersatz
parameter.  I'll provide an extra string parameter for all
generators, that lives in the `SolarSystem` type (for now).

The table can now just mention the static string which
indicates the kind of variation to build.  (Eventually,
this will become more dynamic, once I have support for
runtime-insertion of stars.)

sc2/src/uqm/gendef.c

@@ -58,9 +58,10 @@ extern struct GeneratorBase cxxDefaultPlanetGen;
 
 
 const GenerateFunctions *
-getGenerateFunctions (STAR_DESC *const star, void **sup )
+getGenerateFunctions (STAR_DESC *const star, void **sup, const char **supArg )
 {
 	*sup= star->supplement;
+	*supArg= 0;
 
 	switch (star->Index)
 	{
@@ -95,6 +96,7 @@ getGenerateFunctions (STAR_DESC *const star, void **sup )
 			return &generateTrapFunctions;
 		case BURVIXESE_DEFINED:
 			return &generateBurvixeseFunctions;
+			abort();
 		case DRUUGE_DEFINED:
 			return &generateDruugeFunctions;
 		case BOMB_DEFINED:

sc2/src/uqm/gendef.h

@@ -8,7 +8,7 @@
 extern "C" {
 #endif
 
-const GenerateFunctions *getGenerateFunctions (STAR_DESC *star, void **sup);
+const GenerateFunctions *getGenerateFunctions (STAR_DESC *star, void **sup, const char **arg );
 
 enum
 {

sc2/src/uqm/planets/planets.h

@@ -143,6 +143,7 @@ struct star_desc
 	BYTE Postfix;
 
 	void *supplement; // The CXX builder's pointer gets put here.
+	void *supArg; // Extra info for the CXX builder goes here.
 };
 
 struct node_info
@@ -269,6 +270,7 @@ struct solarsys_state
 	// Since everything else probably ignores it... we can probably
 	// avoid setting it to `nullptr`, for now...
 	void *genSupplement;
+	const char *supArgument;
 };
 
 extern SOLARSYS_STATE *pSolarSysState;

sc2/src/uqm/planets/solarsys.c

@@ -1735,7 +1735,8 @@ ExploreSolarSys (void)
 
 	memset (pSolarSysState, 0, sizeof (*pSolarSysState));
 
-	SolarSysState.genFuncs = getGenerateFunctions (CurStarDescPtr, &SolarSysState.genSupplement);
+	SolarSysState.genFuncs = getGenerateFunctions (CurStarDescPtr, &SolarSysState.genSupplement,
+			&SolarSysState.supArgument);
 
 	InitSolarSys ();
 	SetMenuSounds (MENU_SOUND_NONE, MENU_SOUND_NONE);

sc2/src/uqm/uqmdebug.c

@@ -645,7 +645,8 @@ starRecurse (STAR_DESC *star, void *arg)
 	SolarSysState.SunDesc[0].location.x = 0;
 	SolarSysState.SunDesc[0].location.y = 0;
 	//SolarSysState.SunDesc[0].radius = MIN_ZOOM_RADIUS;
-	SolarSysState.genFuncs = getGenerateFunctions (star, &SolarSysState.genSupplement);
+	SolarSysState.genFuncs = getGenerateFunctions (star, &SolarSysState.genSupplement,
+			&SolarSysState.supArgument);
 
 	pSolarSysState = &SolarSysState;
 	(*SolarSysState.genFuncs->generatePlanets) (&SolarSysState);