URL:
<http://gna.org/bugs/?13611>
Summary: [patch] rework city health
Project: Freeciv
Submitted by: syntron
Submitted on: Montag 01.06.2009 um 17:50
Category: None
Severity: 3 - Normal
Priority: 5 - Normal
Status: None
Assigned to: None
Originator Email:
Open/Closed: Open
Discussion Lock: Any
Release:
Operating System: None
_______________________________________________________
Details:
At a game I played yesterday I had activated city
illness. After some time I got a really big city
- and it was ill ...
So I check the illness calculation. The square of
the city size is used. This will reach really high
values (city size 20 will result in a 40.0%
possibility of illness). The health effect is
implemented as a reduction by a constant value,
which will not really help. The value can't be large
or there will be not illness for small cities but it
also can't be small or big cities will never be
healthy.
Therefore I changed the basic illness formula to
> ill_size = (1- exp(- size / 10)) * 10 * illness_base_factor
This function starts at 0 for size = 0 and goes
asymptotic to its maximum value (illness_base_factor).
[Remark: I used this also for the migration patches.]
More Information to the new calculation and also
an example for the illness values can be found in
the file ./doc/ruleset_options/health.txt included
in the patch. I also created an image showing the
city illness (health.png created by the matlab
script health.m).
changes by this patch:
- new formula for illness calculation
- renamed all illness ruleset options to illness_*
(plague_on => illness_on)
- remove illness_safe_mod
- add illness_min_size (cities below this number
will never get ill)
- add illness_base_factor
- hint if illness is deactivated
- documentation for the health effect / city illness
depends on the previous health patches (13603, 13604
and 13605)
_______________________________________________________
File Attachments:
-------------------------------------------------------
Date: Montag 01.06.2009 um 17:50 Name: health3.patch.diff Size: 18kB By:
syntron
<http://gna.org/bugs/download.php?file_id=5868>
-------------------------------------------------------
Date: Montag 01.06.2009 um 17:50 Name: health.m Size: 4kB By: syntron
<http://gna.org/bugs/download.php?file_id=5869>
-------------------------------------------------------
Date: Montag 01.06.2009 um 17:50 Name: health.png Size: 30kB By: syntron
<http://gna.org/bugs/download.php?file_id=5870>
_______________________________________________________
Reply to this item at:
<http://gna.org/bugs/?13611>
_______________________________________________
Nachricht geschickt von/durch Gna!
http://gna.org/
_______________________________________________
Freeciv-dev mailing list
[email protected]
https://mail.gna.org/listinfo/freeciv-dev
