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OverviewFelgo 3 Support (Qt 5) › Particle Error


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  • #19959


    I’m just going through the first few tutorials for Vplay, and I’m having a problem with particles. The StackBox demo works fine, but even when I copy its code into my own experiment, the particle section throws up this error:

    “Could not open \qml\Vplay\particles\ParticleVplayInternal.qml for reading. Either the file does not exist or you do not have permissions to open it.”

    I already tried various permutations of where to put the .json and .png for the particle. Copying the demo arrangement, they’re in the entities folder which is in the qml folder. I also tried putting them in the assets folder, same error. Current qml file:


    import Felgo 3.0
    import QtQuick 2.0
    import "entities"
    GameWindow {
      id: gameWindow
      onSplashScreenFinished: world.running = true
        EntityManager {
            id: entityManager
            entityContainer: scene
        Scene {
            id: scene
            PhysicsWorld {
                id: world
                running: false
                gravity.y: 9.81
                z: 10 // draw the debugDraw on top of the entities
                // these are performance settings to avoid boxes colliding too far together
                // set them as low as possible so it still looks good
                updatesPerSecondForPhysics: 60
                velocityIterations: 5
                positionIterations: 5
                // set this to true to see the debug draw of the physics system
                // this displays all bodies, joints and forces which is great for debugging
                debugDrawVisible: false
            EntityBase {
                entityId: "ground1"
                entityType: "ground"
                height: 20
                width: scene.width
                anchors {
                    bottom: scene.bottom
                Rectangle {
                    anchors.fill: parent
                    color: "white"
                BoxCollider {
                    anchors.fill: parent
                    bodyType: Body.Static
            EntityBase {
                entityId: "box1"
                entityType: "box"
                x: scene.width/2
                Image {
                    id: boxImage
                    source: "../assets/box.png"
                    anchors.fill: boxCollider
                BoxCollider {
                    id: boxCollider
                    width: 40
                    height: 40
                    anchors.centerIn: parent
                    fixture.onBeginContact: {
                SoundEffectVPlay {
                    id: collisionSound
                    source: "...assets/test.wav"
                ParticleVPlay {
                    id: collisionParticleEffect
                    fileName: "SmokeParticle.json"

    …and upon further inspection, the audio isn’t working either, but my main concern at the moment is the particle error.



    Felgo Team


    regarding sound: You specify “…assets/test.wav” as source. As the Main.qml lies in the qml folder of the project, the correct relative path would be “../assets/test.wav”. It is also recommended to specify asset paths with Qt.resolvedUrl(…):


    You should specify the correct fileName path for SmokeParticle.json in the same manner. You current setup refers to the file qml/SmokeParticle.json of your project.

    As particles work for the StackTheBox demo, the issue probably lies in your custom project’s setup of assets and code.

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