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Hello,

Take the control on how your cities grow...
Wellcome to City Controller game script

Main behaviors
- By default, towns does not grow anymore.
- Town growth is now based on cargo delivered. non-linear(logarithm scale)
- Two game modes : collaborative or competitive (claim your city !)
- Simple display on town screen (don't flood user with many figures, just highlight levels)
- Automatic and progressive cargo acceptance, based on installed newGRF, tested with ECS,FIRS, AXIS (any economy mode)
- Unlock more cargos by reaching global goals. Unlocked cargos makes city growing further.
- Control difficulty level as you want (grow rate, unlocking steps, initial cargos...)
- And more... Town stabilizer (rebuild user bulldozed tile town to keep town stable), industry sign for one who play transparency...



Download
download in game
or here:
Version history

Version 13 beta (18th of May, 2025)
please scroll to my last post for beta details and download.

Version 12 (February the 2nd, 2025)
- can recognize these 10 cargosets: Vanilla ottd, AXIS2, FIRS2, FIRS3, FIRS4, FIRS5, XIS, NAIS, ECS, YETI.
- fine tune cargo rate toward identified sets.
- bugfix on "zero cargo id" (like Alcohol in FIRS5/tempered)
- GS interaction possible with signs, can inject script into old savegame (place a sign with "GS:repair" and trigger exclusive rights)
- reduce cargo selector to 2 options (with/without mails)
- remove "Cargo to unlock" settings since we now manage cargosets individually.
- tested ok with openttd 15-beta1

Version 11 (January the 1st, 2025) Happy new year day !
- reshape setting screen, remove the "quick achievement" option
- add a new setting to control steps between cargos (for unlocking), 3k/5k/7k
- cargo unlock threshold got a smarter computation system.
- allow more cargos to be unlocked from 9 to 16
- rephrase several texts (english),
- added a welcome popup on co-op mode.
- reduce log footprint on AI console, silent a warning.
- report competition results are now on yearly basis in the AI console
- standard ottd cargos: ensure DIAM, VALU are last for unlocking.

Version 10 (December 2024)
- rebuild cargo selector to propose 3 choices for initial town growing :
1.normal = only basic cargos makes effect, unlock nexts on goal completion
2.few = you start with passengers only, unlock nexts on goal completion
3.ext = you start with more cargos.

Version 9
- change minimum version to 12
- bugfix town funding
- bugfix on company merge
- higher penalty for city conflict (competitive)
- clean traces on console.
- lower difficulty

Version 8 (March 2023) Back in the game !!!
compatibility release, stay tune for better release...
- fix crash when no cargo recognized for unlocking, prevent future cases.
- fix do not rely on old cargo id anymore to recognize cargo
- town effect is not used by FIRS and ECS, better use cargo code
- recognize 2 new cargos : vehicle and farm supply
- display completion year for cargo unlock goals
- add "quick Achievement" option to make goals faster to achieve (divide goals quantities from 2 to 5)


Version 7 (May 2015 : rev 164)
- fix a small issue with town increase indicator when town no cargo are delivered.

Version 6 (August 2014 : rev 162)
- add city stabilizer : new option
- fix loading big map issue

Version 5 (May 2014 : rev 147)
- fix a bug at industry sign
- fix a bug at town funding
- change text color

Version 4 (April 2014 : rev 141)
- new game type : competition (claimed city)
- display company or manager name at claimed city
- add company goal for claimed city
- add leader notes on global goals
- fix a bug at industry sign

Version 3 (April 2014 : rev 127)
- new cargo mode : start with few cargo, unlock others.
- display town thresholds as global goals, show goal progress (checked twice a year)
- town goal scales on number of accepted cargos
- yearly update of map inhab/house.

Version 2 (April 2014 : rev 115)
- fix : avoid unwanted house creation on gameload
- better inhab per house computation
- smoother town growing
- now on bananas !

Version 1 (March 2014 : rev 103)
- non linear growing rate
- only 1 game type for now : "Every towns are free, Collaborative Town growing", other types will come later...
- compatible FIRS, ECS and builtin economies
- town cago acceptance : 3 modes
- display industry name option
- cargo bonus when all cargo types are delivered
- two languages : EN, FR
- based on Minimal GS 2 from Zuu


Notes

- non linear growing
see next post for picture.
we can have different kind of curves depending on cargo classes.


- town acceptance.
the script does not change cargo town acceptance,
it just change how it's took into account.
in normal mode, town will took into account only basic cargos (depending on newGRF)
when your town is growing it will took into account more and more cargo.
the number of accepted cargo depends on town size.


- unlocking cargos.
depending on mode you choose, you can play with every cargo unlocked from the begining, or with a progressive approach.
on progressive mode, cargos are unlock when a given number of town reach a given size.


- bonus.
by delivering all expected cargo type to a town, a growing bonus is given.
you can reach higher bonus by unlocking cargo to deliver.


- delivered cargo
Picked up cargo is not took into account, but only delivered to town does count.
in multiplayer, in collaborative mode (other mode aren't developed yet) : every player cargos are summed up for each town.

- stabilizer.
when user bulldoze town tiles, city is decreasing, this script has option to avoid that.
The script can detect the number of house difference and trigger an house creation.

Compatibility

- no dependancy required.
- scripts tested with each 4 builtin climats, FIRS (any economy), ECS vectors, AXIS, and it will be compatible with upcoming ones, because it take towneffect cargo indicator.
- multiplayer compatible.
- savegame compatible.
- It's compatible with openttd v12 and higher, and have been tested toward JGRPP 0.56

note : if you play without economy newGRF, you will at least enjoy impact for valuable cargo.

https://github.com/primer97/ctct

Thank you.

Non linear growing rate graph :

Pretty cool Gs you have there : ]

Btw, would future builds allow for editing the None liniar grow rate curve?

Hi, gave this a try and it looks really nice. However, i couldn't quite figure what exactly happens when i change the difficulty. Second, is there a bonus for delivering more than one cargo?

thx

Hello,
there is a bonus when town is expecting 3 cargos for example, and if you delivers 3 cargo a bonus is provided.
But not more, I think you have to unlock new cargo first.

Hi,
thank you for your post,

Damrus wrote:Btw, would future builds allow for editing the None liniar grow rate curve?

Not at the moment, maybe later, but that's not easy.
By the way it took months of playing to adjust rate and curve : it make passenger interresting to start with, but you need to focus on goods to have your town growing more... and so on. (depends on ecs-vector/firs...)

Mojhave wrote:Hi, gave this a try and it looks really nice. However, i couldn't quite figure what exactly happens when i change the difficulty.

Changing difficulty makes harder/easier to make your towns growing.
setting to very hard will require you to deliver much more to allow your town growing.

And btw, as it's non linear it's even harder when your town is getting bigger.

Mojhave wrote: Second, is there a bonus for delivering more than one cargo?

If you deliver cargo that is not (yet) required, there are no bonus.
you must first unlock cargo, that's the chalange of this script.

Bonus is given on delivering all expected cargos (at medium level).

I seem to have found a bug: More information and/or savegame available upon request.

lcd_47
when API change, a compatiblity script is use to let "older" script/ai running with "old" api feature.
so if you lack the compatibility script file, the needed changes aren't set, and script will use new api feature using old style, and crash.

you should seen at start (in console log) a "missing compatibility version 1.x" message, way to fix that is make sure your package is using the needed file.

look for game/compat_1.x.nut files (take it from any packages, well, take it from a linux version or source as windows version may have an installer and may have its files pack into some installer exe)
Where these files should be put depend on your arch, so i couldn't tell you (i think the openttd wiki have an entry telling you per arch directory/location).

If you are totally lost : if the script allow you to disable news (in its options), ask the script to stop trigger a news item to avoid the crash ; or wait for hpfx to add support 1.5 gs api.

@krinn There seems to be an installation problem with one of the patches I'm using, but your post pointed me in the right direction. Thank you for the hints!

Furthermore you should not grab the compat files from a random OpenTTD version, but the same one as you installed. Both a newer and an older may cause trouble. This is why these files must not be placed in the shared script directory in Docements\OpenTTD (or equivalent in your OS). But should reside in the installation folder of that OpenTTD version.

@Zuu Sadly, they are not installed on Linux. For what it's worth: make install creates a folder bundle that contains, among other things, ai/compat_*.nut and game/compat_*.nut, but only ai/compat_*.nut are actually installed. Copying bundle/game to /usr/local/share/games/openttd solves the problem.

lcd_47 wrote:@Zuu Sadly, they are not installed on Linux. For what it's worth: make install creates a folder bundle that contains, among other things, ai/compat_*.nut and game/compat_*.nut, but only ai/compat_*.nut are actually installed. Copying bundle/game to /usr/local/share/games/openttd solves the problem.

That would be for http://bugs.openttd.org/ then
But last time i check the provide linux binaries was having it, must be distro specific, something for their own bugzilla so

@krinn I'm compiling from sources, thus no distro to whine at.

lcd_47 wrote:@krinn I'm compiling from sources, thus no distro to whine at.

Excellent find, it went unnoticed for years. r27399 should fix this. The 'install' target indeed never ever seemed to install the game dir. Distros probably do their own stuff there anyway, using the pre-built bundle and not caring about our own install target.

planetmaker wrote:r27399 should fix this.

It does, thank you!

Interesting and challenging script.
Maybe a little bit to much challenging (maybe it is my fault, playing with ECS without ECS town - no tourist available in town but counted).
It is hard to get four 11k towns, because there are often 'deadlocks' - town is not growing because there is no sufficient pass/mail,
there is no sufficient pass/mail because town is too small.
Is 'fund buildings' option working? Maybe funding buildings would decrease temporarily amount of required cargo, for example 50% less?
If town (or cluster of towns) is 'deadlocked', it would be the option to jump off.

Another question concern goal window - one town reach 11k, but there is still [0%] of goal reached: Is it a bug?
Save game is attached, all newgrfs are available online.

EDIT: not a bug, it was not refreshed or smth.

hpfx wrote: Changing difficulty makes harder/easier to make your towns growing.
...
And btw, as it's non linear it's even harder when your town is getting bigger.

I found, that even on very easy level it is hard to initialise town growth, in case of small towns
(not sufficient to grow with pax/mail generated itself).
Maybe there should be a minimal offset of impact to help small towns growing?

Another issue - in arctic climate there is disambiguation - town above snow line, without food, display 'no growth', but is growing.
I propose to fix it in towns.nut: If food is not delivered during winter, regardless to other cargoes level and acceptance, growth will be suppressed (I divided by 10 to estimate, how large is original impact).

Another proposal is to give player opportunity to make pulse growth, if town is stalled.
My first idea was to use 'fund buildings', but have no idea how to check it on GS level.
Currently I'm using 'fund local road reconstruction': If impact factor is just below town population, it would give burst of new houses.
At least this silly option is use-able

hpfx wrote: Version 7

I think I found a bug, running your script on multiplayer server: Seems, that it appear after company removal/bankruptcy.

any idea, how to fix it?

Hello,

I play with your script and I really apprciate it, thanks

I recently tried the "WIRES" and "FIRS" grf but when I deliver electricity (produce like 4MW with alcool), the city grwoth too much. With only electricity of an powerplant, the city growth up to 15 000 pop. It's really too easy to growth a city with this kind of ratio.
I don't know if it's a problem from your grf, WIRES or FIRS one but the mix of this three break the growth city system.

Thanks again for your work !

Is this still compatible with 1.7.1? Cause I used to play with it in 1.6 and had no problems afaik.