[SOLVED] Implement 'for' loop on attribute

[nirharpaz]

i’ve got this attribute
SelectionMouseInput.attributes.add ('Objects', { type: 'entity', array: true, title: 'Objects to select' });

and each of the objects have a script that contains this

PositionThis.attributes.add('myIndex', {
    type: 'number'
});

I try to primitively create a loop

    for(var i=0; i<this.Objects.Length; i++)
    {
        console.log("hello"+Objects[i].script.PositionThis.index);
    }

but pretty much nothing happens, not even an error

anyone got a clew what did i do wrong?
if needed, her’s the link
https://playcanvas.com/editor/scene/784107

[yaustar]

It should be this.Objects.length not this.Objects.Length

It doesn’t give an error as it’s ‘valid’ to check a number against an undefined value.

[nirharpaz]

length

thanks
but now the line console.log("hello"+this.Objects[i].script.PositionThis.myIndex); throws an error “cannot read property index of undefined”.
i went by this post

[SOLVED] Accessing members of another Entity

I’m try to create instances of Entities, and reference properties within those instances. Sort of like instancing prefabs in Unity, and then accessing members of the instance. In my first Script (Script1.js), I create an Entity attribute like so: Script1.attributes.add('otherEntity', { type: 'entity', title: 'Other Entity Prefab' }); Then create a 2nd entity in PlayCanvas Editor, and then assign this 2nd Entity to the entity attribute slot of the original (1st) entity in the PlayCanva…

where you wrote this.otherEntity.script.script2.printCount.
where is the diference?

the caller script has
SelectionMouseInput.attributes.add ('Objects', { type: 'entity', array: true, title: 'Objects to select' });

the array is assigned with entities that each has the PositionThis script.
position this has this attribute
PositionThis.attributes.add('myIndex', { type: 'number' });

https://playcanvas.com/editor/scene/784107

[yaustar]

Refer to this guide I wrote up: How to refer to different parts of the API while scripting

Specifically:

This shows that the pc.Script is actually attached to the Script Component and not the Entity itself. Therefore, accessing the sandbox pc.Script object is done via the Script Component as shown in following code:

anEntity.script.sandbox

Where script is the name of the Script Component object and sandbox is the name of the the pc.Script object as given in the code by the user.

And like the Model and Element Components above, properties and functions of the pc.Script object can be accessed in the same way.

Try the following:

console.log("hello"+this.Objects[i].script.positionThis.myIndex);

[nirharpaz]

looks a bit foolish on my side to bother you, it seems it was a typo mistake, i need to check my typo closer (though i did and still missed it) - it should have been positionThis and not PositionThis.