Qt 5.7 | Qt Quick | Qt Quick Particles Examples - Affectors | attractor.qml Example File

Qt 5.7.1 Reference Documentation

# attractor.qml Example File

particles/affectors/content/attractor.qml

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      ** This file is part of the examples of the Qt Toolkit.
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      import QtQuick 2.0
      import QtQuick.Particles 2.0

      Rectangle {
          id: root
          width: 360
          height: 540
          color: "black"
          Image {
              source: "../../images/finalfrontier.png"
              anchors.centerIn:parent
          }
          ParticleSystem {
              id: particles
              anchors.fill: parent

              Emitter {
                  group: "stars"
                  emitRate: 40
                  lifeSpan: 4000
                  enabled: true
                  size: 30
                  sizeVariation: 10
                  velocity: PointDirection { x: 220; xVariation: 40 }
                  height: parent.height
              }
              Emitter {
                  group: "roids"
                  emitRate: 10
                  lifeSpan: 4000
                  enabled: true
                  size: 30
                  sizeVariation: 10
                  velocity: PointDirection { x: 220; xVariation: 40 }
                  height: parent.height
              }
              ImageParticle {
                  id: stars
                  groups: ["stars"]
                  source: "qrc:///particleresources/star.png"
                  color: "white"
                  colorVariation: 0.1
                  alpha: 0
              }
              ImageParticle {
                  id: roids
                  groups: ["roids"]
                  sprites: Sprite {
                      id: spinState
                      name: "spinning"
                      source: "../../images/meteor.png"
                      frameCount: 35
                      frameDuration: 60
                  }
              }
              ImageParticle {
                  id: shot
                  groups: ["shot"]
                  source: "qrc:///particleresources/star.png"

                  color: "#0FF06600"
                  colorVariation: 0.3
              }
              ImageParticle {
                  id: engine
                  groups: ["engine"]
                  source: "qrc:///particleresources/fuzzydot.png"

                  color: "orange"
                  SequentialAnimation on color {
                      loops: Animation.Infinite
                      ColorAnimation {
                          from: "red"
                          to: "cyan"
                          duration: 1000
                      }
                      ColorAnimation {
                          from: "cyan"
                          to: "red"
                          duration: 1000
                      }
                  }

                  colorVariation: 0.2
              }
              Attractor {
                  id: gs; pointX: root.width/2; pointY: root.height/2; strength: 4000000;
                  affectedParameter: Attractor.Acceleration
                  proportionalToDistance: Attractor.InverseQuadratic
              }
              Age {
                  x: gs.pointX - 8;
                  y: gs.pointY - 8;
                  width: 16
                  height: 16
              }
              Rectangle {
                  color: "black"
                  width: 8
                  height: 8
                  radius: 4
                  x: gs.pointX - 4
                  y: gs.pointY - 4
              }

              Image {
                  source:"../../images/rocket2.png"
                  id: ship
                  width: 45
                  height: 22
                  //Automatic movement
                  SequentialAnimation on x {
                      loops: -1
                      NumberAnimation{to: root.width-45; easing.type: Easing.InOutQuad; duration: 2000}
                      NumberAnimation{to: 0; easing.type: Easing.OutInQuad; duration: 6000}
                  }
                  SequentialAnimation on y {
                      loops: -1
                      NumberAnimation{to: root.height-22; easing.type: Easing.OutInQuad; duration: 6000}
                      NumberAnimation{to: 0; easing.type: Easing.InOutQuad; duration: 2000}
                  }
              }
              Emitter {
                  group: "engine"
                  emitRate: 200
                  lifeSpan: 1000
                  size: 10
                  endSize: 4
                  sizeVariation: 4
                  velocity: PointDirection { x: -128; xVariation: 32 }
                  height: ship.height
                  y: ship.y
                  x: ship.x
                  width: 20
              }
              Emitter {
                  group: "shot"
                  emitRate: 32
                  lifeSpan: 1000
                  enabled: true
                  size: 40
                  velocity: PointDirection { x: 256; }
                  x: ship.x + ship.width
                  y: ship.y + ship.height/2
              }
          }
      }