Smr Simple!

These question, do come up time and time again.
It would be nice to have a central Wiki page for new map makers, that could be referred to without going into extreme conditions.

Limit of Goods = 32
Limit of Industries that can built after the game has started = 12
Limit of Industries that can be built in a city after the game has started = 3
Limit of Industry that can be placed in a city (modding) = ???
Limit of Cities = 50 (75 if no AI opponent)
Any one Industry can NOT have more than 8 resource exchanges.

(Are there more??)
Jancsika

Number of Buildings:
http://eric.bkbobby.com/forum/viewtopic.php?f=2&t=288

There seems to be a limit of 109 total city buildings, Small Medium & large in RTTCities_mapname.XML.
I Just ran various tests on the different amounts and after 109 it starts to mess the graphics up very badly. See the

You can use any combination as long as it all adds up to 109 total and as long as you have less Large than the other 2, Large size more than Small or Medium will mess it all up..

This number was found using the original Building Spacing of 80. Different numbers may give different results,

The safe Events file:
Every map needs an Events file.
If you just start on your Mapmaking carrier, it will be safe to have only the 3 global events included:
RRT_Events_MAPNAME.XML
<RRTEvents>
<Event>
<szTitle>GLOBAL_RECESSION</szTitle>
</Event>
<Event>
<szTitle>GLOBAL_STOCK_DECREASE</szTitle>
</Event>
<Event>
<szTitle>GLOBAL_BOOM</szTitle>
</Event>
</RRTEvents>
Quoting Snoopy

A map with no more than the 3 global events is rather dull and does not teach mappers anything.
All you really need to do with a map is open the Goods XML and open a three-line or fully listed version of RRT_Events.xml and remove any event blocks that do not have matching Goods. Also, if you have a US event for a Good, delete any Europe event for that Good
There is more information at Bobby’ Forum: viewtopic.php?f=28&t=78