Collision detection for Animation? [Solved]

  • Is it possible to add collision detection to animation so that it launches every time the animation moves?

    Example if you have PropertyAnimation on x { from: 0; to:100; duration 1000}
    Is it somehow possible to bind for example PropertyChange on x to that animation?

    Or is there any other way to make good collision detection, if you create timer, it doesn't take all pixels.. and it lags when your phone lags..

  • You could try performing the collision detection in the onXChanged handler:

    @onXChanged: detectCollisions()@

    Depending on what you are making, you might also be able to make use of something like (QML bindings for Box2D).


  • I tried to use onXChanged, but animation didn't trigger it.

  • Hmm, it should be triggered -- can you check if the following works for you? (it should print lots of messages to the console)

    @import QtQuick 1.0

    Rectangle {
    width: 400
    height: 400

    Rectangle {
        id: rect
        width: 100
        height: 100
        color: "red"
        PropertyAnimation on x { from: 0; to: 100; duration: 1000 }
        onXChanged: console.log("x changed to " + x)



  • Hey, thanks. It was Behaviour on x, that I had tried earlier!

    onXChanged worked like a charm, thanks!

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