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31
Pak128.Britain-Ex Bug Reports / Re: air/rolling resistance fix
« Last post by Vladki on March 26, 2017, 10:15:29 PM »
It is significant, however, that the Hackney carriage has only two wheels, which would reduce the rolling resistance somewhat.

I do not think so. The values used (and found on wikipedia, or elsewhere), are for one wheel of certain type on certain surface. It does not matter how many wheels the vehicle has. The weight is split among them, so the more wheels you have the less drag you get on one wheel, but then you add them together and get back the same number.
32
Pak128.Britain-Ex Bug Reports / Re: air/rolling resistance fix
« Last post by jamespetts on March 26, 2017, 08:51:15 PM »
Thank you very much for that: I have now incorporated all of these apart from that of the Hackney carriage, which I think that I may well have balanced especially to be able to be hauled by a single pony, although I must confess that I cannot immediately recall. It is significant, however, that the Hackney carriage has only two wheels, which would reduce the rolling resistance somewhat.
33
Simutrans Extended Development / Re: Dat file reference for: Vehicles and Ways
« Last post by Vladki on March 26, 2017, 06:33:09 PM »
air_resistance is a coefficient to calculate drag force: F= speed^2 * air_resistance
rolling_resistance is NOT in N/kg, but a dimensionless coeficient: F= weight * g * rolling_resistance

34
Pak128.Britain-Ex Bug Reports / air/rolling resistance fix
« Last post by Vladki on March 26, 2017, 05:55:37 PM »
When digging into friction and related stuff http://forum.simutrans.com/index.php?topic=16815.0 I found some values that were way off from other vehicles. Complete patch is attached, comments below:

Code: [Select]
diff --git a/bus/hackney-carriage.dat b/bus/hackney-carriage.dat
index 1e9dcba..4557ebe 100644
--- a/bus/hackney-carriage.dat
+++ b/bus/hackney-carriage.dat
@@ -15,7 +15,7 @@ intro_year=1750
 intro_month=1
 retire_year=1913
 retire_month=4
-rolling_resistance=40
+rolling_resistance=140
 brake_force=0
 
 comfort=30
- hackney-carriage.dat has specified rolling_resistance=40, while other similar vehicles have 100-180. I think 140 would be more appropriate. Wikipedia says stage coach has 0.0385 to 0.073 on dirt road (with/without snow). So 140 might be ok for paved road. Perhaps an option to have additional rolling_resistance for different ways (dirt, gravel, cobblestone, concrete, asphalt; steel rail, welded steel rail, cast iron rail, plateway, ...) could be interesting.
Code: [Select]
diff --git a/config/simuconf.tab b/config/simuconf.tab
index aa3cbca..2d03391 100644
--- a/config/simuconf.tab
+++ b/config/simuconf.tab
@@ -1043,10 +1043,6 @@ citycar_life = 1375
 # Pak128.Britain default = 158 (yellow)
 cursor_overlay_color = 158
 
-# how height is a tile in z-direction (default 16, TTD 8)
-# THIS WILL BE ONLY USED, WHEN THIS FILE IS IN THE pakxyz/config!
-tile_height = 16
-
 ################################### River settings ##################################
 
 # rivers:
tile_height is defined twice in simuconf.dat. Once (on the top) is set to 8, next time to 16. The second definition should go away.
Code: [Select]
diff --git a/maglev/RMU9000.dat b/maglev/RMU9000.dat
index 679ccd6..51b0687 100644
--- a/maglev/RMU9000.dat
+++ b/maglev/RMU9000.dat
@@ -18,7 +18,7 @@ sound=-1
 
 can_lead_from_rear=0
 bidirectional=1
-air_resistance=1300
+air_resistance=162
 
 Constraint[Prev][0]=none
 Constraint[Next][0]=RMUflat(cooled)
All walues for maglevs are IMHO way too high, so I divided them by 8.
RMU9000 does not look to be streamlined, so it may be even omitted, default =145.
Code: [Select]
diff --git a/maglev/RMU_Aerocab.dat b/maglev/RMU_Aerocab.dat
index b2ffc18..fae823c 100644
--- a/maglev/RMU_Aerocab.dat
+++ b/maglev/RMU_Aerocab.dat
@@ -18,7 +18,7 @@ sound=-1
 
 can_lead_from_rear=1
 bidirectional=0
-air_resistance=825
+air_resistance=103
 
 Constraint[Prev][0]=RMU-aerocab(rear)
 Constraint[Prev][1]=none
@@ -53,7 +53,7 @@ sound=-1
 
 can_lead_from_rear=1
 bidirectional=0
-air_resistance=825
+air_resistance=103
 
 Constraint[Prev][0]=RMUbox(cooled)
 Constraint[Prev][1]=RMUbox(piece)
diff --git a/maglev/Ultra450.dat b/maglev/Ultra450.dat
index 00a554d..94710a2 100644
--- a/maglev/Ultra450.dat
+++ b/maglev/Ultra450.dat
@@ -24,7 +24,7 @@ bidirectional=0
 min_loading_time=25
 max_loading_time=160
 comfort=155
-air_resistance=882
+air_resistance=103
 
 Constraint[Prev][0]=BR-Ultra-450(rear)
 Constraint[Prev][1]=none
@@ -153,7 +153,7 @@ bidirectional=0
 min_loading_time=25
 max_loading_time=160
 comfort=155
-air_resistance=882
+air_resistance=103
 
 Constraint[Prev][0]=BR-Ultra-450(Open)
 Constraint[Prev][1]=BR-Ultra-450(Buffet)
diff --git a/maglev/Ultra520.dat b/maglev/Ultra520.dat
index 22bdf63..5b3da20 100644
--- a/maglev/Ultra520.dat
+++ b/maglev/Ultra520.dat
@@ -24,7 +24,7 @@ bidirectional=0
 min_loading_time=20
 max_loading_time=180
 comfort=149
-air_resistance=825
+air_resistance=103
 
 Constraint[Prev][0]=BR-Ultra-520(rear)
 Constraint[Prev][1]=none
@@ -153,7 +153,7 @@ bidirectional=0
 min_loading_time=20
 max_loading_time=180
 comfort=149
-air_resistance=825
+air_resistance=103
 
 Constraint[Prev][0]=BR-Ultra-520(Open)
 Constraint[Prev][1]=BR-Ultra-520(Buffet)
diff --git a/maglev/Ultra520DD.dat b/maglev/Ultra520DD.dat
index 8f014bc..2c37f9f 100644
--- a/maglev/Ultra520DD.dat
+++ b/maglev/Ultra520DD.dat
@@ -25,7 +25,7 @@ bidirectional=0
 min_loading_time=35
 max_loading_time=240
 comfort=128
-air_resistance=882
+air_resistance=110
 
 Constraint[Prev][0]=BR-Ultra-520DD(rear)
 Constraint[Prev][1]=none
@@ -154,7 +154,7 @@ bidirectional=0
 min_loading_time=35
 max_loading_time=240
 comfort=128
-air_resistance=882
+air_resistance=110
 
 Constraint[Prev][0]=BR-Ultra-520DD(Open)
 Constraint[Prev][1]=BR-Ultra-520DD(Buffet)
diff --git a/maglev/UltraMail.dat b/maglev/UltraMail.dat
index af103ef..a9391fe 100644
--- a/maglev/UltraMail.dat
+++ b/maglev/UltraMail.dat
@@ -23,7 +23,7 @@ bidirectional=0
 min_loading_time=45
 max_loading_time=240
 
-air_resistance=882
+air_resistance=103
 
 Constraint[Prev][0]=BR-Ultra-Mail(rear)
 Constraint[Prev][1]=none
@@ -103,7 +103,7 @@ bidirectional=0
 min_loading_time=45
 max_loading_time=240
 
-air_resistance=882
+air_resistance=103
 
 Constraint[Prev][0]=BR-Ultra-Mail(Open)
 Constraint[Next][0]=BR-Ultra-Mail(front)
All the remaining maglevs, are streamlined, and look similar to each other, so I unified their air resistance to 103. Ounly the double decker unit has higher = 110.
Code: [Select]
diff --git a/trains/ner-es1.dat b/trains/ner-es1.dat
index 8183ee8..16f44ed 100644
--- a/trains/ner-es1.dat
+++ b/trains/ner-es1.dat
@@ -24,7 +24,7 @@ sound=-1
 can_lead_from_rear=0
 bidirectional=1
 way_constraint_permissive[1]=1
-air_resistance=1000
+air_resistance=125
 
 # No multiple working
 Constraint[Prev][0]=none

This electric engine does not look very streamlined, so a default value for trains (160) may be good too.
35
Forum / Re: The Attachments have lost!
« Last post by Pascallok on March 26, 2017, 04:52:09 PM »
(DE) Ich muss Attachments ermittelt,dass Forumsausfall verloren und mache "Detektive des Attachments u. Avatars" besser.
Und mach bei Vaclav und anderen Mitglieder,wo verlorene Attachments befragen müssen:
  • Wem gehört das Attachments?
  • Wo hat Mitglieder Attachment vor Forumausfall hochgeladen?
  • Wo hat nach Forumausfall Attachments verloren?
Ich bin im Not,weil Attachments vermisst hat.

Gruß Pascallok

(EN) I have to do Attachments ascertained that forum failure lost and makes "detectives of the Attachments and Avatars" better.
And make with Vaclav and other members where lost Attachments must confer with:
  • To whom does the Attachments belong?
  • Where does highly loaded have members Attachment before forum failure?
  • Where has lost after forum failure Attachments?
I am in the need because Attachments has missed.

Greeting Pascallok
36
Stories, Screenshots, Videos & Saves / Re: Landscape of EDO in 19th century
« Last post by Yona-TYT on March 26, 2017, 04:26:12 PM »

Beautiful work, sharing in Simutrans-BLOG;)
37
Bug Reports / Re: v120.1.3 Theme support : gui_button_height
« Last post by Yona-TYT on March 26, 2017, 04:05:22 PM »
I think it's time to polish the graphic interface a bit.  8)
38
Bug Reports / [Gui] The buttons in the lists look bad.
« Last post by Yona-TYT on March 26, 2017, 04:02:31 PM »

I use the "pak96.comic touch" theme most lists look bad (buttons overlap).


However the list of cities looks much better.  8)
39
Simutrans Extended Discussion / Re: All info in signal window
« Last post by jamespetts on March 26, 2017, 12:23:54 PM »
Splendid, thank you for that: now merged. I am just about to upload the .dat file to Simutranslator, too, so you can start translating if you like.
40
Simutrans Extended Development / Re: Interesting proposed patches in standard
« Last post by jamespetts on March 26, 2017, 12:04:33 PM »
If these make it into the Standard codebase, then I anticipate that these will be incorporated in due course in any event as I merge changes from Standard.
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