Fix the desynch bug

Ilwrath's shield must be visible for both parties upon the ship's death
If the cloak is visible for one side and invisible for the other the game's
internal states will end up differing, ultimately leading to a out of synch error

Author: SirDifferential

src/uqm/tactrans.c

@@ -43,6 +43,8 @@
 #include "libs/mathlib.h"
 #include "ships/ship.h"
 
+#include "uqm/colors.h"	// For Ilwrath INVIS_COLOR
+
 static void cleanup_dead_ship (ELEMENT *ElementPtr);
 
 static BOOLEAN dittyIsPlaying;
@@ -628,6 +630,21 @@ ship_death (ELEMENT *ShipPtr)
 	StopMusic ();
 
 	GetElementStarShip (ShipPtr, &StarShipPtr);
+        
+	// Enable Ilwrath's cloak visibility for both sides
+	// if the ship was cloaked upon destruction
+	// Having the cloak on for one side and off for one causes
+	// a desynch in net play
+        if (StarShipPtr->SpeciesID = ILWRATH_ID)
+        {
+		if (GetPrimType (&DisplayArray[ShipPtr->PrimIndex]) == STAMPFILL_PRIM)
+		{
+	        	PRIMITIVE *lpPrim;
+	        	lpPrim = &(GLOBAL (DisplayArray))[ShipPtr->PrimIndex];
+	        	SetPrimType(lpPrim, STAMPFILL_PRIM);
+	        	SetPrimColor(lpPrim, INVIS_COLOR);
+		}
+	}
 
 	if (ShipPtr->mass_points <= MAX_SHIP_MASS)
 	{	// Not running away and not reincarnating (Pkunk)
@@ -675,7 +692,7 @@ ship_death (ELEMENT *ShipPtr)
 				StarShipPtr->RaceDescPtr->ship_data.ship_sounds, 1),
 				CalcSoundPosition (ShipPtr), ShipPtr,
 				GAME_SOUND_PRIORITY + 1);
-                
+
         ++ShipPtr->life_span;
 
 		DeltaCrew (ShipPtr, -(SIZE)ShipPtr->crew_level);