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Outerra Tech Demo download. Help with graphics driver issues

Author Topic: Properties  (Read 5814 times)

SteelRat

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Properties
« on: June 29, 2015, 10:09:37 am »

Hi cameni!

Object.getOwnPropertyNames(this)

Code: [Select]
...
$ctx   // What is it?
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cameni

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Re: Properties
« Reply #1 on: June 29, 2015, 11:22:22 am »

A function that returns the context where the object was created. In theory should allow you to access global properties of the script where the object was created, though it may not be always clear where that was.
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SteelRat

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Re: Properties
« Reply #2 on: June 29, 2015, 12:17:39 pm »

A function that returns the context where the object was created. In theory should allow you to access global properties of the script where the object was created, though it may not be always clear where that was.

Interesting!

Code: [Select]
this.ctx = $ctx(this);

Correctly?
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necro

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Re: Properties
« Reply #3 on: July 02, 2015, 07:46:31 am »

no, this might be enough:


Code: [Select]
var $ctx;

You can access the methods easily by
Code: [Select]
$ctx.method()
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cameni

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Re: Properties
« Reply #4 on: July 02, 2015, 09:14:29 am »

$ctx is defined as a method on interface objects, so:

Code: [Select]
var obj = // create object somehow ...
obj.$ctx().something = 1; //sets global variable "something" in the context of the obj's script

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SteelRat

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Re: Properties
« Reply #5 on: July 02, 2015, 09:58:32 am »

$ctx is defined as a method on interface objects, so:

Code: [Select]
var obj = // create object somehow ...
obj.$ctx().something = 1; //sets global variable "something" in the context of the obj's script

Thanks!
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SteelRat

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Re: Properties
« Reply #6 on: October 02, 2015, 02:40:18 pm »

Hi cameni!

Code: [Select]
var Vec3 = function (x, y, z) {
    this.x = +x;
    this.y = +y;
    this.z = +z;
};

Vec3.prototype = {
    constructor: Vec3
};

Why is that?
Code: [Select]
this.x = +x;
And not so
Code: [Select]
this.x = x;
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cameni

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Re: Properties
« Reply #7 on: October 02, 2015, 03:13:48 pm »

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SteelRat

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Re: Properties
« Reply #8 on: October 02, 2015, 03:57:16 pm »

It's a weird JS optimization trick.
See http://www.sitepoint.com/understanding-asm-js/ and http://asmjs.org/spec/latest/#parameter-type-annotations

I understood.
This means that the value of the "X" is of type double.

Thank!
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SteelRat

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Re: Properties
« Reply #9 on: February 06, 2016, 12:46:50 pm »

$ctx is defined as a method on interface objects, so:

Code: [Select]
var obj = // create object somehow ...
obj.$ctx().something = 1; //sets global variable "something" in the context of the obj's script

Hi cameni!

Does not work.

Code: [Select]
// Truck_trailer.js

function update_frame(dt, engine, brake, steering, parking) {
...

if (this.init === undefined) {
var pos = this.geom.get_pos();
var rot = this.geom.get_rot();
var pos = relative_pos(pos, rot, 10, 180, 50);

this.trailer = $world.create_instance("SteelRat/Trailer/Trailer", pos, rot, false);
this.trailer.$ctx().truckMover = "TestVal";

this.log_inf("---- PTM: Truck mover: Init: OK");

this.init = true;
}
}

Code: [Select]
// Trailer.js

function update_frame(dt, engine, brake, steering, parking) {
...

if (this.init === undefined) {
if (this.$ctx().truckMover) { /* The subject test I have tried a lot of options, the effect -> nothing */
this.log_inf("---- PTM: Trailer: Init: OK");
this.init = true;
}
}
}
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cameni

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Re: Properties
« Reply #10 on: February 07, 2016, 02:19:18 am »

There was a bug in this version that may have a connection to this one, we'll have to test it.
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SteelRat

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Re: Properties
« Reply #11 on: February 07, 2016, 09:23:12 am »

There was a bug in this version that may have a connection to this one, we'll have to test it.

Ok. Thank!
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