Trade-goods.plist - Revision history

Cholmondely: /* OXPs doing unusual things */ Added more

2026-07-05T14:48:59Z

‎OXPs doing unusual things: Added more

Cholmondely: Added gubbins about "non-standard peak import/export values" and calculating contract prices. Hope it is accurate!

2026-06-29T16:55:47Z

Added gubbins about "non-standard peak import/export values" and calculating contract prices. Hope it is accurate!

Cholmondely: /* Links */ Added "checking things"

2026-06-29T10:37:15Z

‎Links: Added "checking things"

Cholmondely: /* sort_order */ Added in More Moolah

2026-06-28T08:34:55Z

‎sort_order: Added in More Moolah

Cholmondely: /* sort_order */ Added a list

2026-06-25T20:18:21Z

‎sort_order: Added a list

Cholmondely: Added pretty picture

2026-06-18T17:16:11Z

Added pretty picture

Cholmondely: /* name */ Added note

2026-06-18T16:54:41Z

‎name: Added note

Cholmondely: /* OXPs doing unusual things */ Added decay link

2026-06-18T16:53:09Z

‎OXPs doing unusual things: Added decay link

Cholmondely: Linked "Trade-goods (abridged)", added OXPs

2026-06-18T16:29:23Z

Linked "Trade-goods (abridged)", added OXPs

Wildeblood: /* name */

2025-06-08T09:26:53Z

‎name

@@ Line 646: / Line 646: @@
 *[[Checking Trade Goods OXP]]
 *[https://bb.oolite.space/viewtopic.php?p=306300#p306300 Using var example = System.infoForSystem(0, 96).samplePrice("aristo_cheese");] (several posts, 2026)
-=== OXPs doing unusual things ===
+=== OXPs doing unusual things (usually done by Javascript) ===
-*[[SOTL Altmap]] - cim's experimental scenario - with 3 1/2 pages of commodities (and uses the F8F8 screen)
+*[[SOTL Altmap]] - cim's experimental scenario - with 3 1/2 pages of commodities (and uses the F8F8 screen for information about them)
 *[[Darkside Moonshine Distillery]] - price of new whiskey commodity depends on distance from distilleries
-*[[SW Economy]] - introduces a 3rd economic pole (mining worlds), commodities, ''and'' economy size, TL & planet radius affect commodity production
+*[[Risk Based Economy OXP]] - overall: lower profits in safe systems, better profits in dangerous ones.
 *Javascript code for decaying Radioactives is currently here: [[Talk:Radioactives]]
 {{QuoteText|Text=

← Older revision		Revision as of 16:55, 29 June 2026
Line 575:		Line 575:

	''Hence one usually abandons using any of the script options, and just tweaks the price after all the scripts have finished playing, ''eg'' in [[Smugglers]]. It was the only way to guarantee getting some sort of bump in a price when wanted.''		''Hence one usually abandons using any of the script options, and just tweaks the price after all the scripts have finished playing, ''eg'' in [[Smugglers]]. It was the only way to guarantee getting some sort of bump in a price when wanted.''
		+
		+	=== Non-standard peak import and peak export values ===
		+	So, for any good, look up the <code>price_average</code>, <code>price_economic</code> and <code>price_random</code> parameters.
		+
		+	The price will vary between <code>average * (1+(efactoreconomic)-random)</code> and <code>average (1+(efactor*economic)+random)</code>.
		+
		+	<code>efactor</code> varies between -1 and +1 depending on whether you're at an importer or an exporter, based on this formula (ObjC, but should be easy enough to convert to JS) - look up the <code>peak_import</code> and <code>peak_export</code> values:
		+	<code> int exDiff = abs(economy-exporter)*2;
		+	int imDiff = abs(economy-importer)*2;
		+	int distance = (exDiff+imDiff)/2;
		+
		+	if (exDiff == imDiff)
		+	{
		+	// neutral economy
		+	return 0.0;
		+	}
		+	else if (exDiff > imDiff)
		+	{
		+	// closer to the importer, so return -ve
		+	return -(1.0-((float)imDiff/(float)distance));
		+	}
		+	else
		+	{
		+	// closer to the exporter, so return +ve
		+	return 1.0-((float)exDiff/(float)distance);
		+	}</code>
		+
		+	The formula for calculating price is a slightly complicated formula because it needs to deal with OXP goods where the peak export and import aren't the ends of the range. For "traditional" 0 <-> 7 or 7 <-> 0 goods, it gives a straight linear trend between the two peaks... For goods with the peak imports and exports closer to the middle of the economy line, it still gives a straight trend between the peaks, but gradually levels off towards neutral outside of that zone. [https://bb.oolite.space/viewtopic.php?p=245218#p245218 Cim (2015)]
		+
		+	So, assuming:
		+	:peak export = 2
		+	:peak import = 5
		+	:price average = 100, and
		+	:price economic = 0.5
		+
		+	we should see this correlation of economy to price:
		+	:0 ... 100
		+	:1 ... 75
		+	:2 ... 50
		+	:3 ... 83
		+	:4 ... 116
		+	:5 ... 150
		+	:6 ... 125
		+	:7 ... 100
		+
		+	[https://bb.oolite.space/viewtopic.php?p=306354#p306354 Wildeblood (2026)]
		+
		+
		+	=== Calculating prices for contracts ===
		+	So long as you only work with commodities using the standard Oolite pricing algorithm (i.e. ones which don't have a script), you can get the maximum and minimum prices fairly easily and in a short time. So far the only commodities I know of which don't obey standard Oolite pricing rules are the ones in my scenario OXPs ([[SOTL Altmap]]) which don't have cargo contracts anyway. You could either restrict contracts to those goods or only use the expensive algorithm for other goods.
		+
		+	From [https://bb.oolite.space/viewtopic.php?p=241020#p241020 here (2015)] with discussion and more explanation by [[User:Cim\|Cim]].

	== Links ==		== Links ==

@@ Line 591: / Line 591: @@
 *[https://bb.oolite.space/viewtopic.php?f=4&t=20576 How to get the displayName for a commodity in the Main Station Market?] (2020)
 *[https://bb.oolite.space/viewtopic.php?f=6&t=17269 Thinking about Planet Income classification] (2015)
 === OXPs doing unusual things ===
 *[[SOTL Altmap]] - cim's experimental scenario - with 3 1/2 pages of commodities (and uses the F8F8 screen)

@@ Line 133: / Line 133: @@
 See button on right for list of vanilla game/OXP sort_orders ->
 <div class="mw-collapsible mw-collapsed"  data-expandtext="Show sort_orders" data-collapsetext="Hide" style="overflow:auto;">
-[[Vanilla Game]]
+[[Vanilla game]]
 :100 Food
 :200 Textiles
@@ Line 151: / Line 151: @@
 :1600 Gemstones
 :1700 Alien Items
 [[Fuel Tweaks]]
 :90 Quirium Fuel
 [[Montanas Resource Pack 01]]
 :1610 Quirium Crystal
 [[Solar Harvest OXP]]
@@ Line 165: / Line 191: @@
 :2350 Coronal Plasma
-[[SW Economy]] adds to, but also reorders the vanilla game commodities too
+[[SW Economy]] adds to, but also reorders and reprices some of the vanilla game commodities too
 :100 Food
 :200 Textiles
@@ Line 186: / Line 212: @@
 :1900 Narcotics
 :2000 Firearms
 </div>

@@ Line 130: / Line 130: @@
 === sort_order ===
 A number positioning the item on the F8 screen when goods are sorted in the default order. The core goods have values 100 to 1700 in steps of 100.
 === trumble_opinion ===

@@ Line 1: / Line 1: @@
 For a more ''readable'' version, try [[Trade-goods (abridged)]] - then come back to this one.
 '''Note: this page describes functionality currently only in the 1.81 development code. It may change further before being part of a stable release.'''
 == Preamble ==

@@ Line 89: / Line 89: @@
 === name ===
-A string containing the name of the trade good. This may contain [keys]s for [[descriptions.plist]] expansion.
+A string containing the name of the trade good. This may contain [keys]s for [[descriptions.plist]] expansion. But see "comment" just above
 === peak_export ===