[Saims]

Hi,

I’m just trying to give the entity I’m building a specific property. In my case I want to create a Bird. In our Bird.qml there is the property “property bool isBowlingBird: false” and now I want an BuildEntityButton, that sets this value to true when I build the Bird. (Bird gets another appearance and behaves differently when hit)

Another example, where we need to set a property when dragging it into the level would be with our wall, where we want to set a rotation.

I used the code I could find in the BuildEntityButton’s docu, but it doesn’t work. Here my code:

 

We have a template for all our EntityBaseDraggables (DraggableEntityTemplate):

EntityBaseDraggable {
    id:draggableTemplate

    // settings for the draggable
    clickingAllowed: false
    allowedToBuild: true
    draggingAllowed: true

    gridSize: 20
    // the collider's size is exactly 1x1 grid
    colliderSize: 20

     property bool levelDraggingMode: false
}

 

The Bird.qml is a DraggableEntityTemplate with the property isBowlingBird.

 

We also have a BuildEntityButtonTemplate:

BuildEntityButton {

    property alias toCreateEntitySource: image.source
    width: 50
    height: 50

    Image {
      id: image
      // make it the size of the parent
      anchors.fill: parent
    }
}

 

And here is the real EntityButton:

BuildEntityButtonTemplate {

       toCreateEntityType: "entities/Bird.qml"
       toCreateEntitySource: "img/bird_yellow.png"
       width: 30
       height: 25
       creationProperties: { isBowlingBird: true }
   }

 

Well, this looks for me exactly like your code in the docu. But when I try to drag the Bird into the Level I get these errors:

file::/qml/VPlay/level/BuildEntityButton.qml:317: TypeError: Result of expression 'createdEntity' [undefined] is not an object.
file::/qml/VPlay/level/BuildEntityButton.qml:338: TypeError: Result of expression 'createdEntity' [undefined] is not an object.
file::/qml/VPlay/level/BuildEntityButton.qml:338: TypeError: Result of expression 'createdEntity' [undefined] is not an object.
file::/qml/VPlay/level/BuildEntityButton.qml:338: TypeError: Result of expression 'createdEntity' [undefined] is not an object.
.......

 

Some more infos: I’m using the latest version of v-play, I’m using v-play_daily, don’t know whether this was needed or not, but I also used qmake, clean and rebuild project. Without setting a creationProp everything works fine and I can drag my common birds/walls into the game.

What am I missing?

[AlexFelgo Team]

Hi,

unfortunately there is a mistake in our docu with the creationProperties.

It should be

creationProperties: { "isBowlingBird" : true }

instead of

creationProperties: { isBowlingBird : true }

 

Did this solve your problem?

Best Regards,

Alexander

[Saims]

Nice!!!

Thank you very much, it solved my problem. 🙂

[Saims]

Hi,

I got one more question concerning the BuildEntityButton and the properties and I didn’t want to create a new thread.

So setting properties like a rotation works fine when dragging an entity into the game. But when I now have e.g. my wall with a rotation of 45, that I already dragged into the game, and I want to change it’s position by picking it up again, and moving it around, it loses it’s set property. Meaning in my case I dragged a wall with rotation 45 into the game, and after picking it up again, the rotation got reset to 0.

Is this a known bug, or can I do anything against it?