HandleEvent(BeginTurn) 'WonderLookup' post {
int_t i;
int_t inetplayer;
city_t tmpCity;

inetPlayer = WonderOwner(WonderDB(WONDER_INTERNET));

if(inetPlayer != -1) {
//remove computer center from inetPlayer buildlists
for( i = 0 ; i < PlayerCityCount(inetPlayer); i = i + 1 ){
GetCityByIndex(inetPlayer, i, tmpCity);
KillBuildingFromBuildList(tmpCity, BuildingDB(IMPROVE_COMPUTER_CENTER));
}
}
}

as you can see it identifies the player that owns the wonder (if any) each turn and then procedes to remove all computer centers from the build lists of all cities the player own. it works for human players and AI alike.
i could really use a couple of tips on how to prevent computer center from appearing on the build lists at all.
but as it is now it should still prove usefull, i hate going trough all my build lists and manually removing buildings when i build such a wonder.

HandleEvent(BeginTurn) 'WonderLookup' post {
// general vars
int_t i;
int_t hasrunonce;
int_t adv;
city_t tmpCity;

// vars for internet fix
int_t B;
int_t inetPlayer;
int_t oldInetPlayer;

// vars for national shield fix
int_t C;
int_t shieldPlayer;
int_t oldShieldPlayer;

// vars for central matter decompiler fix
int_t D;
int_t compPlayer;
int_t oldCompPlayer;

// vars for hagnia sophia fix
int_t E;
int_t hagnPlayer;
int_t oldHagnPlayer;

if(hasrunonce != 0){
oldInetPlayer = -2;
oldShieldPlayer = -2;
oldCompPlayer = -2;
oldHagnPlayer = -2;
hasrunonce = 0;
}

inetPlayer = WonderOwner(WonderDB(WONDER_INTERNET));
adv = AdvanceDB(ADVANCE_BUGFIX_B);

if(inetPlayer == -1 && oldInetPlayer != -2){
// see if wonder has been destroyed, then clean up
RemoveAdvance(oldInetPlayer, AdvanceDB(ADVANCE_BUGFIX_B));
oldInetPlayer = -2;
}

if(inetPlayer != -1 && inetPlayer != oldInetPlayer) {
// see if a new player has the wonder, then sell buildings
// then remove building from lists and clean up
B = 0;
for( i = 0 ; i < Cities(inetPlayer); i = i + 1 ){
GetCityByIndex(inetPlayer, i, tmpCity);
if(CityHasBuilding(tmpCity, "IMPROVE_COMPUTER_CENTER")){
B = B + 1200;
}
}
AddGold(inetPlayer, B);
if(oldHagnPlayer != -2){
RemoveAdvance(oldInetPlayer, adv);
}
GrantAdvance(inetPlayer, adv);
oldInetPlayer = inetPlayer;
}

shieldPlayer = WonderOwner(WonderDB(WONDER_NATIONAL_SHIELD));
adv = AdvanceDB(ADVANCE_BUGFIX_C);

if(shieldPlayer == -1 && oldShieldPlayer != -2){
// see if wonder has been destroyed, then clean up
RemoveAdvance(oldShieldPlayer, AdvanceDB(ADVANCE_BUGFIX_C));
oldShieldPlayer = -2;
}

if(shieldPlayer != -1 && shieldPlayer != oldShieldPlayer) {
// see if a new player has the wonder, then sell buildings, then remove building from lists and clean up
C = 0;
for( i = 0 ; i < Cities(shieldPlayer); i = i + 1 ){
GetCityByIndex(shieldPlayer, i, tmpCity);
if(CityHasBuilding(tmpCity, "IMPROVE_FORCEFIELD")){
C = C + 5000;
}
}
AddGold(shieldPlayer, C);
if(oldHagnPlayer != -2){
RemoveAdvance(oldShieldPlayer, adv);
}
GrantAdvance(shieldPlayer, adv);
oldShieldPlayer = shieldPlayer;
}

compPlayer = WonderOwner(WonderDB(WONDER_CENTRAL_MATTER_DECOMPILER));
adv = AdvanceDB(ADVANCE_BUGFIX_D);

if(compPlayer == -1 && oldCompPlayer != -2){
// see if wonder has been destroyed, then clean up
RemoveAdvance(oldCompPlayer, AdvanceDB(ADVANCE_BUGFIX_D));
oldCompPlayer = -2;
}

if(compPlayer != -1 && compPlayer != oldCompPlayer) {
// see if a new player has the wonder, then sell buildings, then remove building from lists and clean up
D = 0;
for( i = 0 ; i < Cities(compPlayer); i = i + 1 ){
GetCityByIndex(compPlayer, i, tmpCity);
if(CityHasBuilding(tmpCity, "IMPROVE_MATTER_DECOMPILER")){
D = D + 2250;
}
}
AddGold(compPlayer, D);
if(oldHagnPlayer != -2){
RemoveAdvance(oldHagnPlayer, adv);
}
GrantAdvance(compPlayer, adv);
oldCompPlayer = compPlayer;
}

hagnPlayer = WonderOwner(WonderDB(WONDER_HAGIA_SOPHIA));
adv = AdvanceDB(ADVANCE_BUGFIX_E);

if(hagnPlayer == -1 && oldHagnPlayer != -2){
// see if wonder has been destroyed, then clean up
RemoveAdvance(oldHagnPlayer, AdvanceDB(ADVANCE_BUGFIX_E));
oldHagnPlayer = -2;
}

a note to the above,
i have added to buildings.txt :
ObsoleteAdvance ADVANCE_BUGFIX_"X"
for those building that apply
and added techs to advance.txt as follows

ADVANCE_BUGFIX_A {

Prerequisites ADVANCE_BUGFIX_F

Cost 36272
Icon ICON_ADVANCE_QUANTUM_MECHANICS
Branch 0
Age AGE_ONE
GLHidden
}

ADVANCE_BUGFIX_B {

Prerequisites ADVANCE_BUGFIX_A

Cost 36272
Icon ICON_ADVANCE_QUANTUM_MECHANICS
Branch 0
Age AGE_ONE
GLHidden
}

ADVANCE_BUGFIX_C {

Prerequisites ADVANCE_BUGFIX_A

Cost 36272
Icon ICON_ADVANCE_QUANTUM_MECHANICS
Branch 0
Age AGE_ONE
GLHidden
}

ADVANCE_BUGFIX_D {

Prerequisites ADVANCE_BUGFIX_A

Cost 36272
Icon ICON_ADVANCE_QUANTUM_MECHANICS
Branch 0
Age AGE_ONE
GLHidden
}

ADVANCE_BUGFIX_E {

Prerequisites ADVANCE_BUGFIX_A

Cost 36272
Icon ICON_ADVANCE_QUANTUM_MECHANICS
Branch 0
Age AGE_ONE
GLHidden
}

ADVANCE_BUGFIX_F {

What *are* you trying to do with that enourmous chunk of code? It seems like you're giving whoever owns the building-wonders a special advance and as soon as the wonder changes owner, you give the new owner a certain amount of money for every accompanying wonder-building he owns. What's the advance good for? Why give money to the new owner? If you're trying to sell the buildings it would be much better to actually destroy the building as well using the event DestroyBuilding or do it differently altogether by calling the event SellBuilding, which takes the money-part out of your hands altogether. In that case, the code would look something like this:

code:

---

		for( i = 0 ; i < Cities(inetPlayer); i = i + 1 ){
			GetCityByIndex(inetPlayer, i, tmpCity); 
			if(CityHasBuilding(tmpCity, "IMPROVE_COMPUTER_CENTER")){
				Event:SellBuilding(tmpCity, BuildingDB(IMPROVE_COMPUTER_CENTER));
			}
		}

---

the key to the fix is as you noted the "bugfix" advances. they refer only to themselves and dont appear in great library, so the player wont notice them unless they cheat.
these advances makes the computer center (or whatever) obsolete.
if we take the internet example then the timeline is as follows

this is only a crude model of my script, but a picture can sometimes say more than a thousand words ;-)

assuming that both solutions works equally well, and only playtesting will show that, the only difference between the two scripts could be effeciency and since that is impossible to determine without the .exe source then we will never know. but most likely is that an undocumentet feature from activision has been tested to be efficient, then again, what did they really test before shipping ;-)

I also admit that your solution is much more elegant and easyer to use for most people.