For information and discussion about Oolite.
https://bb.oolite.space/
Phasted, I presume? Did you forget your password?phasted_too wrote:I've just started to sit down and think about how all of this new stuff can be used to make Real-life Economics better...
phasted_too wrote:The central concept in RLE is the econBalance. econBalance is calculated by the_determineMarket()method which is called by theshipWillExitWitchspace()event handler... unless I'm misunderstanding something, I think I need econBalance to be in place before trade-goods.plist works its magic, but I'm not sure it will be.
So, my question: does Oolite v1.81+ calculate prices and quantities after the player has "arrived" in the new system (after the tunnel effect)? IsshipWillExitWitchspace()called before Oolite calculates prices and quantities?
shipWillExitWitchspace would be too late. The easiest thing to do would be to generate it in the market script itself:
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this.name = "RLE Market Script";
this.$econBalance = 0;
this.$lastSystem = -1;
this.updateLocalCommodityDefinition = function(marketdef, station, system) {
if (system.ID != this.$lastSystem) {
this.$econBalance = ...; // recalculate it here
this.$lastSystem = system.ID;
}
// ... and now use the economy balance as needed
}They both do similar things - it depends what you're trying to do. The market script inphasted_too wrote:Another thing that has me absolutely stumped: what's the difference between the market script specified in planetinfo.plist and the one called for by trade-goods.plist. Do I need both? Do I need either one? An actual working example (even a silly trivial one) would be a gift from heaven...
planetinfo.plist is for people trying to amend the system prices, for multiple - perhaps all - trade goods. The market script in trade-goods.plist is to give special market behaviour to that specific trade good.planetinfo.plist is the way to go, since you want to update all (or at least most) goods on a system-by-system basis. Here's a quick (untested, so there might be a typo) example. We'll assume this is being applied to a single system only:
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this.name = "Test market script";
this.updateLocalCommodityDefinition = function(marketdef, station, systemID) {
// big sales on food right now
if (marketdef.classes.indexOf("oolite-edible") > -1) {
// if the good is in the "edible" class - Food, Liquor/Wines, or an edible OXP-defined trade good
// edit its market definition to lower the price and boost the quantity
marketdef.price = Math.floor(marketdef.price*0.75); // 25% off
marketdef.quantity = marketdef.quantity * 2;
}
// else it's not edible and we don't adjust the market from its previous definition
return marketdef;
}
trade-goods.plist market script would be to add particular behaviour to a single trade good (or group of trade goods defined by one OXP). Here's one for a hypothetical "sunscreen" trade good - it has normal pricing by economy set up in the trade-goods.plist, but then we want to tweak that to raise the prices if the local star is particularly bright.
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this.updateGeneralCommodityDefinition = function(marketdef, station, systemID) {
if (system.info.sun_radius > 200000 && !station) {
// really big star
marketdef.quantity = 0; // no stock for export - everyone is using it
marketdef.price = Math.floor(marketdef.price*1.2); // 20% price bonus
marketdef.legality_export = 3; // strongly discouraging taking it out of the system
}
// otherwise just use the normal pricing
return marketdef;
}
!station is because the method gets called twice - once to set system prices and once to set station prices. We only want to make the price modification once, on the system pricing.Yep... tried to request a new one... the BB software swears up and down that it sent me one but there's nothing in my inbox. So, I'm locked out of the old account.Cody wrote:Phasted, I presume? Did you forget your password?phasted_too wrote:I've just started to sit down and think about how all of this new stuff can be used to make Real-life Economics better...
Different email address, possibly? <pages Disembodied>phasted_too wrote:So, I'm locked out of the old account.
Your old account uses a different email address to your new account - maybe the password was sent there? If not, and you want to reactivate it, I can PM you a new password for your old account.phasted_too wrote:Yep... tried to request a new one... the BB software swears up and down that it sent me one but there's nothing in my inbox. So, I'm locked out of the old account.
marketDef.classes!! That's a smokin' brilliant idea... I wouldn't have thought of it on my own (from reading the documentation I got the impression that classes were only useful in secondary markets). I'll define two classes of my own ("RLE-ag" and "RLE-ind") and deal with all of the commodities in two easy-to-handle groups... that should simplify a lot of things... I hope.cim wrote:shipWillExitWitchspacewould be too late. The easiest thing to do would be to generate it in the market script itself:Code: Select all
this.name = "RLE Market Script"; this.$econBalance = 0; this.$lastSystem = -1; this.updateLocalCommodityDefinition = function(marketdef, station, system) { if (system.ID != this.$lastSystem) { this.$econBalance = ...; // recalculate it here this.$lastSystem = system.ID; } // ... and now use the economy balance as needed }They both do similar things - it depends what you're trying to do. The market script inphasted_too wrote:Another thing that has me absolutely stumped: what's the difference between the market script specified in planetinfo.plist and the one called for by trade-goods.plist. Do I need both? Do I need either one? An actual working example (even a silly trivial one) would be a gift from heaven...planetinfo.plistis for people trying to amend the system prices, for multiple - perhaps all - trade goods. The market script intrade-goods.plistis to give special market behaviour to that specific trade good.
In your case,planetinfo.plistis the way to go, since you want to update all (or at least most) goods on a system-by-system basis. Here's a quick (untested, so there might be a typo) example. We'll assume this is being applied to a single system only:Code: Select all
this.name = "Test market script"; this.updateLocalCommodityDefinition = function(marketdef, station, systemID) { // big sales on food right now if (marketdef.classes.indexOf("oolite-edible") > -1) { // if the good is in the "edible" class - Food, Liquor/Wines, or an edible OXP-defined trade good // edit its market definition to lower the price and boost the quantity marketdef.price = Math.floor(marketdef.price*0.75); // 25% off marketdef.quantity = marketdef.quantity * 2; } // else it's not edible and we don't adjust the market from its previous definition return marketdef; }
_activateMarket() completely from the ground up (it makes extensive use of the pre-1.81 station.market object) and I'll have to pull _determineMarket() out of the world script and put it in the market script and re-write it almost completely from the ground up.
PM sent!phasted_too wrote:Please PM me a new password... I'd prefer to use the old account...
Defining your own classes probably isn't the best approach here - you'd need to override the corephasted_too wrote:marketDef.classes!! That's a smokin' brilliant idea... I wouldn't have thought of it on my own (from reading the documentation I got the impression that classes were only useful in secondary markets). I'll define two classes of my own ("RLE-ag" and "RLE-ind") and deal with all of the commodities in two easy-to-handle groups... that should simplify a lot of things... I hope.
trade-goods.plist to do it, and they then wouldn't be available on new goods.marketDef.peak_import and marketDef.peak_export to determine whether a good is agricultural or industrial. (You could also get an OXP good which was for example peak_import = 0 and peak_export = 2 - goes from Poor Industrial to Rich Industrial systems, and Agricultural systems don't really care about it.)Code: Select all
// create a cobra 3 trader, give it some cargo, and set the outbound destination
var ships = system.addShips("[cobra3-trader]", 1, p.position.add(p.vectorForward.multiply(10000)), 1000);
ships[0].fuel = 7;
ships[0].shipUniqueName = "My Cobbie";
ships[0].setCargoType("PLENTIFUL_GOODS");
ships[0].homeSystem = system.ID;
ships[0].destinationSystem = 252;
// create a new ship group and make the cobbie the leader
var shipG = new ShipGroup("mygroup1", ships[0]);
ships[0].group = shipG;
// create a sidewinder escort and offer to escort the cobbie
var grp1 = system.addShips("[sidewinder-escort]", 1, p.position.add(p.vectorForward.multiply(10000)), 1000);
grp1[0].shipUniqueName = "My Sidewinder";
grp1[0].offerToEscort(ships[0]);
// add the sidewinder to the group
shipG.addShip(grp1[0]);
grp1[0].group = shipG;
// create a mamba escort and offer to escort the cobbie
var grp2 = system.addShips("[mamba-escort]", 1, p.position.add(p.vectorForward.multiply(10000)), 1000);
grp2[0].shipUniqueName = "My Mamba";
grp2[0].offerToEscort(ships[0]);
// add the mamba to the group
shipG.addShip(grp2[0]);
grp2[0].group = shipG;
grp1[0].switchAI("escortAI.plist");oolite-escortAI.js is probably better to use nowadays if you want a standard one, or you can write your own.oolite-escort role category from role-categories.plist. Setting the primary role to "escort" is probably the easiest.offerToEscort - if it's false, something went wrong.