[BTS] Preventing Cities from Being Founded on Certain Types of Terrain

[NuckyPalpatine]

Does anyone know how you can keep cities from being settled on forests until the civ discovers Bronze Working? Likewise with jungles until Iron Working is discovered?

I know you could just edit CIV4FeatureInfos.xml and prevent cities from being founded on forests and jungles altogether until a worker clears the tile. But I'd like to preserve the ability of settlers to clear the tile when they found cities. Plus I'm not sure the AI would know how to use workers that way.

Are there any mods out there that do something similar?

Thanks for all your help.

[The_J]

mmhh...i can't see a real good solution for this, unless you want to program it into the SDK.

One option would be to make forests/jungles impassable for settlers, unless you have the needed technology (the options are in the XML, like e.g. for the galley), but that would probably slow down the expansion.

...er....wait ...i know, there's a python callback for that.
Because i'm to lazy to explain it, i've just hacked it together right now (only a few lines are really needed).
See the attachement.

But attention: That small mod will
- slow down the game
- will probably screw the AI on the city founding part, especially on maps with many forst/jungle tiles



And welcome to CFC .

[Voyhkah]

I'm pretty sure it would be real easy in SDK, if you learned.

Oh, and welcome to CivFanatics!

I always enjoy new people to annoy about my mod!

[NuckyPalpatine]

Originally Posted by The_J

But attention: That small mod will
- slow down the game
- will probably screw the AI on the city founding part, especially on maps with many forst/jungle tiles

Thanks, The_J.

However, I don't want to do anything that would cripple the AI. Maybe something like this could apply only to the human player (and then not slow the game down as much). Is that possible to implement?

[Baldyr]

This is what The_J did:

Spoiler:

	def cannotFoundCity(self,argsList):
		iPlayer, iPlotX, iPlotY = argsList
		###can't found city on forest unless bronze tech
		pPlot = CyMap().plot(iPlotX,iPlotY)
		if pPlot.getFeatureType ()== gc.getInfoTypeForString("FEATURE_FOREST"):
                        pPlayer = gc.getPlayer(iPlayer)
                        pTeam = gc.getTeam(pPlayer.getTeam())
                        if pTeam.isHasTech(gc.getInfoTypeForString("TECH_BRONZE_WORKING")):
                                return False
                        else:
                                return True
                ###can't found city on jungle unless iron tech
		if pPlot.getFeatureType ()==gc.getInfoTypeForString("FEATURE_JUNGLE"):
                        pPlayer = gc.getPlayer(iPlayer)
                        pTeam = gc.getTeam(pPlayer.getTeam())
                        if pTeam.isHasTech(gc.getInfoTypeForString("TECH_IRON_WORKING")):
                                return False
                        else:
                                return True
                ###modification end
		return False

I'd suggest this, then:

Spoiler:

	def cannotFoundCity(self,argsList):
		iPlayer, iPlotX, iPlotY = argsList
		pPlot = CyMap().plot(iPlotX,iPlotY)
		if iPlayer != gc.getGame().getActivePlayer():
			return False
		###can't found city on forest unless bronze tech
		if pPlot.getFeatureType () == gc.getInfoTypeForString("FEATURE_FOREST"):
			return not gc.getTeam(gc.getPlayer(iPlayer).getTeam()).isHasTech(gc.getInfoTypeForString("TECH_BRONZE_WORKING")):
                ###can't found city on jungle unless iron tech
		elif pPlot.getFeatureType () == gc.getInfoTypeForString("FEATURE_JUNGLE"):
                        return not gc.getTeam(gc.getPlayer(iPlayer).getTeam()).isHasTech(gc.getInfoTypeForString("TECH_IRON_WORKING")):
                ###modification end
		return False

The addition is highlighted. The other changes is basically reformatting and doesn't affect functionality.

With all due respect to what The_J did, of course.

[NuckyPalpatine]

Uh, oh...

I probably should've mentioned I'm using Farsight's Totally Replaced Leaders Redux mod, which incorporates Better BTS AI v1.01.

This is what happens when I start a game using The_J and Baldyr's modifications. No mini-map, no advisor buttons, no research bar, nothing.

UPDATE: Same thing seems to happen when I do this to unmodded BTS as well.

Spoiler:

[Baldyr]

Ok, this on its own first, then. Because if it works then its merely a matter of merging these two mods.

[The_J]

Originally Posted by NuckyPalpatine

UPDATE: Same thing seems to happen when I do this to unmodded BTS as well.

Unmodded? I bet you're using BUG as default, right?

[NuckyPalpatine]

Nevermind. I fixed it. There were colons incorrectly placed at the end of the lines immediately following the "if" statements (in Baldyr's code).

Works great now.

[Baldyr]

Aha, there is a Python exception happening at startup. Probably a syntax error when CvGameUtils is being loaded, or something. Enable exceptions and logging in the CivilizationIV.ini file and look in the PythonErr.log file for errors.

[Baldyr]

Yeah, I should have spotted that when I edited the code.