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Disadvantages of destroying industry tiles

Started by TransportFanMar, February 25, 2022, 01:52:42 AM

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TransportFanMar

What are the disadvantages of destroying industry tiles (e.g. farm tiles)? It can be expensive, which I know, but does it lower industry production?

PJMack

Destroying farm tiles used to lower industry production in simutrans-standard, however it appears that it is no longer the case for simutrans-extended.  It is abnormally expensive in pak128.Britain at 5,000¢ per 125x125m tile which converts to ... £200k per acre in today's money!

Ranran

Quote from: PJMack on April 14, 2022, 10:03:36 PMDestroying farm tiles used to lower industry production in simutrans-standard, however it appears that it is no longer the case for simutrans-extended.
This is incorrect; even in extednded, field removal reduces production. What makes it different from the standard is that the field_output_divider can reduce the amount of field influence. The only reason why there is almost no reduction after the field is removed is because Britain-Ex has been configured to do so. Try destroying a lot of fields and you will see that production drops even in Britain-Ex.

PJMack

That is odd, I destroyed all but one field for a cattle farm and saw no loss of listed production per month.  Perhaps this is a bug?

I also looked up farmland costs in the UK to be averaging between £5000-10000 per acre, ~1/20th of what the cost is in game.  In game it is actually cheaper to build a viaduct over a farm (or tunnel under) than to plow through it, which does not reflect reality.  I propose that the farm purchase cost be set at 500¢ rather than 5000¢.  500¢ would still be high enough to discourage necessary farm removal, but not encourage unrealistic workarounds.

Ranran

Quote from: PJMack on April 17, 2022, 08:39:15 PMPerhaps this is a bug?
The formula is broken or there seems to be a problem with the Britain-Ex settings. Check pak256. The reduction in production due to field removal works the same as standard.

I tried removing the fields from two different grain farms, but the number of deletions required for the production decline seems to depend on the original production.
In low-production grain farms, production will not decrease unless more fields are removed.
In other words, the size of the field and the production volume do not match.

DrSuperGood

#5
Destroying farm tiles lowers production in standard. Lost farm tiles will be replaced over time as an industry is used, back up to some maximum number of tiles, if space permits. As such lost production from industry tiles being destroyed is not permanent.

Ranran

#6
Quote from: DrSuperGood on April 20, 2022, 09:37:22 PMAs such lost production from industry tiles being destroyed is not permanent.
Ahh, that is correct. Extended does not work the same as standard. It is not reset but recalculated based on previous production. There may be some intention behind this.

edit:
In standard, the prodbase does not cross over to save, but in extended, it does.