For example: I want to add a new GOODS to the game. Let's say, to make it easy, one of the goods from CTPI. I can see the two files I need to adjust, but what about the sprite? Someone said the sprites from CTPI are still around. Where? What are they called? Is there such a thing as a sprite viewer?

I want to add a unit. Let's say Tom Davis' chariot. He says to amend the files. Which files...? How?

I want to add a building. The sewer system mentioned in a topic elsewhere seems a good idea. But where can I find Hexagonian's orginal instructions?

I only know that the unit sprites are still in the ..\ctp2_data\graphics\sprites\ folder.
The CTP2 unit sprites are called like:

GuXXX.spr

The CTP unit sprites are called like:

GuXX.spr

Unfortunatly there is no sprite viewer, that would help us very much.
There is only an sprite creation tool by Activision, it can be downloaded from Apolyton.
The game itsself is our sprite viewer. You can screen capture the graphics.
Usual I put the city and goods graphics on an pure black terrain. Just add an special terrain to the terrain.txt.

he first to lines of the new terrain must be:

TERRAIN_SPECIAL3 {
TilesetIndex 27

If I understand it correctly, a sprite done just for a scenario would be in the scenario subfolders. That bridge in the Samurai scenario isn't there. So where is it?

If you open up my SPQR scn (available in files Database) you will find
in it Wheat/Grain/Gold/silver/Tin/Copper/Fish goods along with Marble
and amber that are unused in the game,the files you want are goods.txt
goods id txt and unit icon along with the graphics in graphics/pictures
look at these to see how to add your own.Terrain txt/tile improvement
are also quite intresting things to look over.

Couple of additional questions to you Civilisation Wizards:

(1) What is an icon? Well, I understand the role in uniticons.txt for, say, a building. Add one of Harlan's graphics and it shows in the bottom panel when the building/advance is being built. But what use for goods? I now have some goods from CTP1 now in the maps, but have just used icon references to existing goods rather than create new ones and it seems to work.

TilesetIndex 34

And the number of huts is:

TilesetIndex 33

Now I have to explain what are huts exactly CIV1/2 players know it. In CTP1/2 huts are ruins. If you look into the risk.txt you will see this term used used for ruins.
For example one line:

BARBARIAN_HUT_CHANCE 0.00

Now an example of the uniticon.txt:

ICON_ADVANCE_ADV_INFANTRY_TACTICS { FirstFrame "UPDP022.TGA" Movie "NULL" Gameplay "ADVANCE_ADV_INFANTRY_TACTICS_GAMEPLAY" Historical "ADVANCE_ADV_INFANTRY_TACTICS_HISTORICAL" Prereq "ADVANCE_ADV_INFANTRY_TACTICS_PREREQ" Vari "ADVANCE_ADV_INFANTRY_TACTICS_STATISTICS" Icon "UPDP022.TGA" LargeIcon "NULL" SmallIcon "NULL" StatText "ADVANCE_ADV_INFANTRY_TACTICS_PREREQ" }

I think "Icon" is be used for the bottom panel when the building/advance is being built. UPDP022.TGA is not the image for ADVANCE_ADV_INFANTRY_TACTICS actually it is the german leader photo which is not used in the game. The function of "Movie" is a little bit different to CTP1. In CTP1 there was an animated Great Library. This feature could be turned on an off. If the animated Great Library was disabled, there were shown pictured instead of the animations. These pictures were be defined under "FirstFrame". This entry is for also for the Great Library in CTP2. In this example the german leader picture is be shown in the Great Library. Of course it is smaller as the tech pictures, therefore it is stretched to to make fit it in the image box. In CTP2 the "Movie" entry is for the wonder movies only wonders have movies. Maybe this entry allows modmakers to implement advance movies that are played if you discover an advance.
I think "Gameplay", "Historical", "Prereq", "Vari" and "StatText" are entries referring to GreatLibrary.txt. "LargeIcon" and SmallIcon" are for cheateditor and unitmanager.

Now an example of a good:

ICON_GOOD_ARCTIC_MOUNTAIN_ONE { FirstFrame "UPGP018L.TGA" Movie "NULL" Gameplay "TERRAIN_ARCTIC_MOUNTAIN_GOOD_ONE_GAMEPLAY" Historical "NULL" Prereq "NULL" Vari "NULL" Icon "UPGI18.TGA" LargeIcon "NULL" SmallIcon "NULL" StatText "NULL" }

There are "FirstFrame" and "Icon" defined. I suppose "Icon" is used for the trade screen.

Now to your second question:

Thank you indeed for your very full reply. But as one door opens ...

I have just completed the balls-aching task of checking the first 300 tile numbers by placing the requisite numbers in the TileSetIndex line in tileimp.txt. Curiously I have different numbers to you, so what is going on?

Tile no 33 was half an airbase (that is in fact not used in the building of the airbase tile improvement but should be.) Tile no 34 was one of the fortifications (temporary) of units.

I found the ruins on tile nos 150 (henge) and 151 (stones). I found a ruined hut on tile no 160. Unfortunately many, many of the numbers after the first hundred just produce a blue outline (of the sort which when put together make frontiers. So far I have not found rivers, the huts in the Samurai scenario or the bridge. However, as these are clearly tile improvements (you can't cut and paste them) logic dictates that they must be there somewhere.

Now there are, of course, two tilesets. So are we looking at different sets if we have different numbers? And if so, how? But then again the tileset numbers for terrain (1 to 27) clash with those in tileimp.txt so _they_ must refer to the other tileset. Is your 33 and 34 from that set? So where are you changing the humbers to get them?

Incidentally I have also found all the makings for the space module still there plus some really strange things that look like space mines and tank traps!

I got the Goods Sprites from CTP1 and moved them across (renumbering of course) though now I've got Hannibal's scenario as well. Gosh there is going to be a lot of commerce - though I ass-u-me that even if you define goods 3 and 4 the randomly generated maps will only use the first two????

In fact we are talking about different tings I meat the TilesetIndex in the terrain.txt not in the tileimp.txt. I was talking about terrains not about tile improvements. I added terrains up to TilesetIndex 54 but the last terrains were only pure black terrains.

I also try to define goods 3 and 4. On random generated map I have also the problem that these goods didn't appear. Maybe this can be adjusted in the const.txt but I didn't tried it, because I want to make a mod which will use the sprites of Nordicus alternative goods for CTP1. But as I saw this goods in the game I saw that the shaddows of these goods are missing therefore I want to remake them.

Curiously I cannot replicate Martin's tile 33 and 34 in terrain.txt - I get a black square. Martin, what is your methodology?

And, as you have done up to 500, what did you get between 300 and 500?

If it interests people we can put together a list: here is mine upto 300:

quote: Curiously I cannot replicate Martin's tile 33 and 34 in terrain.txt - I get a black square. Martin, what is your methodology?

Here is the code of my special terrains taken from the terrain.txt. May be the problem the InternalType: that you can't replicate. Only these two terrains will give you ruins and rivers. All the other TilesetIndicexs will produce a black square.

code:

---

############################################################
TERRAIN_SPECIAL9 {
TilesetIndex 33
Icon ICON_TERRAIN_BLACK
InternalType: Special
CanDie
GLHidden
EnvBase {
Score 10
Food 0
Shield 0
Gold 5
Defense 0
Movement 200
Freight 100
DeadFood 0
DeadShield 0
DeadGold 0
}
EnvCity {
Score 0
Food 10
Shield 15
Gold 15
Movement 50
Freight 50
}
EnvRiver {
Score 30
Food 5
Shield 5
Gold 5
Movement 50
Freight 50
}
MovementType: Air
MovementType: Land
}
############################################################
TERRAIN_SPECIAL10 {
TilesetIndex 34
Icon ICON_TERRAIN_BLACK
InternalType: Special
CanDie
GLHidden
EnvBase {
Score 10
Food 0
Shield 0
Gold 5
Defense 0
Movement 200
Freight 100
DeadFood 0
DeadShield 0
DeadGold 0
}
EnvCity {
Score 0
Food 10
Shield 15
Gold 15
Movement 50
Freight 50
}
EnvRiver {
Score 30
Food 5
Shield 5
Gold 5
Movement 50
Freight 50
}
MovementType: Air
MovementType: Land
}
############################################################

---

quote: I got the Goods Sprites from CTP1 and moved them across (renumbering of course) though now I've got Hannibal's scenario as well. Gosh there is going to be a lot of commerce - though I ass-u-me that even if you define goods 3 and 4 the randomly generated maps will only use the first two????

Maybe you should take a look on the good.txt

code:

---

# Rubies
TERRAIN_ARCTIC_MOUNTAIN_GOOD_ONE {
   SpriteID 18
   Sound SOUND_ID_RUBIES
   Gold 1
   Probability 0.5
   Icon ICON_GOOD_ARCTIC_MOUNTAIN_ONE
}
# Diamonds
TERRAIN_ARCTIC_MOUNTAIN_GOOD_TWO {
   SpriteID 7
   Sound SOUND_ID_DIAMONDS
   Gold 1
   Probability 0.5
   Icon ICON_GOOD_ARCTIC_MOUNTAIN_TWO
}
# Rubies
TERRAIN_ARCTIC_MOUNTAIN_GOOD_THREE {
   SpriteID 18
   Sound SOUND_ID_RUBIES
   Gold 1
   Probability 0.5
   Icon ICON_GOOD_ARCTIC_MOUNTAIN_THREE
}
# Diamonds
TERRAIN_ARCTIC_MOUNTAIN_GOOD_FOUR {
   SpriteID 7
   Sound SOUND_ID_DIAMONDS
   Gold 1
   Probability 0.5
   Icon ICON_GOOD_ARCTIC_MOUNTAIN_FOUR
}

---

Note that the Probability to appear of every good is 0.5 that means 50%. hat would be a total Probability of 200%. Maybe this is our mistake. There is only a total Probabilty of 100%. And that could be the reason why the game does't recognize the extra goods.

-Martin