Oolite Bulletins

Posted: **Sun Nov 04, 2012 9:00 am**

Personally I would use

if(this.ship.missiles && ((this.ship.missiles.length / 2) === Math.floor(this.ship.missiles.length / 2))
   {missile.position.x = missile.position.x - 20;}
else
   {missile.position.x = missile.position.x + 20;}

or something similar (untested code above). But along those lines yes.

One thing to remember if you're looking at positioning them to a specific point on the ship is that the position on the ship is local (the origin is the centre of the ship, or wherever you put it on the model) and for the launched missile it will be universal (the origin is the witchpoint). You may need to do a "local to global" conversion, such as the one in the griff sub-ent cobra script.

But in the above case that won't matter as you're just moving the missile relative to its current position. I just include the comment for completeness.[/color]

Posted: **Sun Nov 04, 2012 9:25 am**

Thank you, and someday I will tackle this beast that is called JS. But as this will involve quite some learning, wich my old brain isn't suited to, I just post the "standard" version with just the config .plist files to define it.

Here you can find the amphisbaena

EDIT: renamed it, because there is already a copperhead...

Posted: **Sun Nov 04, 2012 11:04 am**

or

Code: Select all

if(this.ship.missiles && (this.ship.missiles.length & 0x01))
   {missile.position.x = missile.position.x - 20;}
else
   {missile.position.x = missile.position.x + 20;}

Just do a logical AND at bit level to check the oven/odd bit

The missile position calculation above is wrong though. You need to change it relative to the ship. e.g. like this:

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var missilePosition;

if(this.ship.missiles && (this.ship.missiles.length & 0x01))
   {missilePosition = new Vector3D(x1,y1,z1);}
else
   {missilePosition = new Vector3D(x2,y2,z2);}

missile.position = this.ship.position.add(missilePosition.rotateBy(this.ship.orientation));

In this, the x,y,z are the local positions in ship coordinates. That the last line converts it to system positions.

Posted: **Mon Nov 12, 2012 8:53 pm**

Is the example code for has_shipyard on the wiki correct? - http://wiki.alioth.net/index.php/Shipda ... s_shipyard
the given example:

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"has_shipyard" = (
                  systemGovernment_number morethan 3,
                  systemEconomy_number lessthan 4
                 )

just game me syntax errors, after a bit of trial and error Oolite seemed happy if i wrote it out as

Code: Select all

"has_shipyard" = (
                 "systemGovernment_number morethan 3", 
                 "systemEconomy_number lessthan 4"
                    );

is that the proper way to do it? if so i can edit the wiki page if you like

Posted: **Tue Nov 13, 2012 2:19 am**

Griff wrote:
Is the example code for has_shipyard on the wiki correct?

No, it wasn't.

Griff wrote:
Oolite seemed happy if i wrote it out as
Code:
"has_shipyard" = (
"systemGovernment_number morethan 3",
"systemEconomy_number lessthan 4"
);

is that the proper way to do it?

Yes. I've just changed the wiki.

Posted: **Tue Nov 13, 2012 7:54 am**

I suppose this having been a feature for over 6 years, I can't just remove it, but I do wonder why anyone would want to give complex conditions to the has_shipyard key.

Does anyone actually use this? (If not, it can go. If so, it needs a non-legacy equivalent adding!)

Posted: **Tue Nov 13, 2012 11:44 am**

Is there a way (in 1.76.x), and if there isn't, could it be added (to 1.77.x): to change player-ship's cargo space on the fly by script?

Why I'm asking?

Because I have a ship design that has two subentities that look very much like cargo spaces. So, to add some extra flavour to this ship, I'd like to make it frangible, and script it so that if one of those aforementioned subents gets shot off, you lose 40% of your cargo capacity. And if the other one gets also shot off, you lose another 40% of the original cargo capacity. That "40%" should IMHO of course be any number of TC one can define in the script.

A bonus feature would be some kind of safeguard against Gold/Platinum/Gem-stones being lost this way (unless cargo space gets reduced to zero or an amount small enough that it becomes smaller than Gold/Platinum amount in 1000s of kgs). Maybe Gem-stones would always be safe (takes several top-tier contracts to even get many kgs of them, let alone 1000s) and Gold & Platinum up to ~100 kg combined would alway be safe too.

AFAIK now you can have this happen once, by scripting the subent's destruction to trigger cargo bay extension failure. And of course I had to design a ship with two such subentities

.

Posted: **Tue Nov 13, 2012 12:32 pm**

1.76, no. 1.77 it will be possible (with the functionality already in 1.77).

Set the ship's original cargo space to the full amount it can carry with both subents attached.
Define two (invisible and undamageable) entries in equipment.plist, each of which has a requires_cargo_space equal to the size of the subent it represents. When the subent is destroyed, remove cargo by script to make room, and install the equipment item. When the subent is repaired, remove the equipment item to free up the cargo space again.

Posted: **Tue Nov 13, 2012 12:51 pm**

Whoa, cool!

I'll postpone the release until 1.77 is released as test then.

Posted: **Tue Nov 13, 2012 2:20 pm**

Zieman wrote:
AFAIK now you can have this happen once, by scripting the subent's destruction to trigger cargo bay extension failure.

Yep, that's what's doable in 1.76 and prior already.

Posted: **Tue Nov 13, 2012 2:22 pm**

How do I scan worldScriptNames for particular scripts; what goes in place of my /* comment */ here? Can I do it immediately from startUp like this, or do I need a delay?

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this.startUp = function()
	{
	this.$checkForIncompatibleScripts();
	}

this.$checkForIncompatibleScripts = function()
	{
	/* Check worldScriptNames for similar scripts. */
	}

Posted: **Tue Nov 13, 2012 2:24 pm**

cim wrote:
I suppose this having been a feature for over 6 years, I can't just remove it, but I do wonder why anyone would want to give complex conditions to the has_shipyard key.

Does anyone actually use this? (If not, it can go. If so, it needs a non-legacy equivalent adding!)

I don't know off the top of my head which OXPs use this, but yes, the possibility to make the availability of a shipyard in a station dependent on conditions was an explicit request at some time. Thus I guess that it's actually used somewhere.

Posted: **Tue Nov 13, 2012 2:30 pm**

Wildeblood wrote:
How do I scan worldScriptNames for particular scripts; what goes in place of my /* comment */ here? Can I do it immediately from startUp like this, or do I need a delay?

StartUp should be fine, and you just need to check for the existence of the script:

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this.startUp = function()
{
	this.$checkForIncompatibleScripts();
}

this.$checkForIncompatibleScripts = function()
{
	if(worldScripts["oolite-constrictor-hunt"])
	{
		/* your code here */
	}
}

Of course you have to know all possible culprits by name before in order to check for each one of them.

See

here.

Posted: **Tue Nov 13, 2012 5:42 pm**

And to clarify the original a little bit, worldScriptNames is just an array, so you'd scan through it or check it like any other array.

Specifically the simplest way is worldScriptNames.indexOf("<yourscriptnamehere>"). If that returns -1 then the script isn't loaded, and anything 0 or higher is the location of the script name in the array.

Either way will work. If you want to look for a specific function within the scripts, that can also be done by extending McLane's way. If you want an example look in the code for Planetary Compass.

Posted: **Tue Nov 20, 2012 2:40 pm**

What is needed to get an equipment plist to randomly choose a word from a descriptions plist dictionary as the equipment's displayed name?

I want the name string in equipment plist to be a variable taken from descriptions plist.

I read Oolite will try to replace words with [square brackets], but I'm not having much luck with that.

atm it's like this.

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(
   (
      0,
      5000,
      "Equip Name: [serial_number]",
      "EQ_MY_EQUIP",
      "blah blah blah",
       {
          "available_to_all" = yes;
		  "portable_between_ships" = yes;
       }
    )
)

and my description plist is like this.

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{
  serial_number = ("two", "three", "four", "five", "six");
}

Obviously that's not working, I've tried various combos of [] inside and outside the name string quotation marks but no joy.

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