Qt 5.13 | Qt Quick Demo - Maroon in Trouble

Qt 5.13.2 Reference Documentation

# Qt Quick Demo - Maroon in Trouble

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      import QtQuick 2.0
      import QtQuick.Particles 2.0
      import "content"
      import "content/logic.js" as Logic

      Item {
          id: root
          width: 320
          height: 480
          property var gameState
          property bool passedSplash: false

          Image {
              source:"content/gfx/background.png"
              anchors.bottom: view.bottom

              ParticleSystem {
                  id: particles
                  anchors.fill: parent

                  ImageParticle {
                      id: bubble
                      anchors.fill: parent
                      source: "content/gfx/catch.png"
                      opacity: 0.25
                  }

                  Wander {
                      xVariance: 25;
                      pace: 25;
                  }

                  Emitter {
                      width: parent.width
                      height: 150
                      anchors.bottom: parent.bottom
                      anchors.bottomMargin: 3
                      startTime: 15000

                      emitRate: 2
                      lifeSpan: 15000

                      acceleration: PointDirection{ y: -6; xVariation: 2; yVariation: 2 }

                      size: 24
                      sizeVariation: 16
                  }
              }
          }

          Column {
              id: view
              y: -(height - 480)
              width: 320

              GameOverScreen { gameCanvas: canvas }

              Item {
                  id: canvasArea
                  width: 320
                  height: 480

                  Row {
                      height: childrenRect.height
                      Image {
                          id: wave
                          y: 30
                          source:"content/gfx/wave.png"
                      }
                      Image {
                          y: 30
                          source:"content/gfx/wave.png"
                      }
                      NumberAnimation on x { from: 0; to: -(wave.width); duration: 16000; loops: Animation.Infinite }
                      SequentialAnimation on y {
                          loops: Animation.Infinite
                          NumberAnimation { from: y - 2; to: y + 2; duration: 1600; easing.type: Easing.InOutQuad }
                          NumberAnimation { from: y + 2; to: y - 2; duration: 1600; easing.type: Easing.InOutQuad }
                      }
                  }

                  Row {
                      opacity: 0.5
                      Image {
                          id: wave2
                          y: 25
                          source: "content/gfx/wave.png"
                      }
                      Image {
                          y: 25
                          source: "content/gfx/wave.png"
                      }
                      NumberAnimation on x { from: -(wave2.width); to: 0; duration: 32000; loops: Animation.Infinite }
                      SequentialAnimation on y {
                          loops: Animation.Infinite
                          NumberAnimation { from: y + 2; to: y - 2; duration: 1600; easing.type: Easing.InOutQuad }
                          NumberAnimation { from: y - 2; to: y + 2; duration: 1600; easing.type: Easing.InOutQuad }
                      }
                  }

                  Image {
                      source: "content/gfx/sunlight.png"
                      opacity: 0.02
                      y: 0
                      anchors.horizontalCenter: parent.horizontalCenter
                      transformOrigin: Item.Top
                      SequentialAnimation on rotation {
                          loops: Animation.Infinite
                          NumberAnimation { from: -10; to: 10; duration: 8000; easing.type: Easing.InOutSine }
                          NumberAnimation { from: 10; to: -10; duration: 8000; easing.type: Easing.InOutSine }
                      }
                  }

                  Image {
                      source: "content/gfx/sunlight.png"
                      opacity: 0.04
                      y: 20
                      anchors.horizontalCenter: parent.horizontalCenter
                      transformOrigin: Item.Top
                      SequentialAnimation on rotation {
                          loops: Animation.Infinite
                          NumberAnimation { from: 10; to: -10; duration: 8000; easing.type: Easing.InOutSine }
                          NumberAnimation { from: -10; to: 10; duration: 8000; easing.type: Easing.InOutSine }
                      }
                  }

                  Image {
                      source: "content/gfx/grid.png"
                      opacity: 0.5
                  }

                  GameCanvas {
                      id: canvas
                      anchors.bottom: parent.bottom
                      anchors.bottomMargin: 20
                      x: 32
                      focus: true
                  }

                  InfoBar { anchors.bottom: canvas.top; anchors.bottomMargin: 6; width: parent.width }

                  //3..2..1..go
                  Timer {
                      id: countdownTimer
                      interval: 1000
                      running: root.countdown < 5
                      repeat: true
                      onTriggered: root.countdown++
                  }
                  Repeater {
                      model: ["content/gfx/text-blank.png", "content/gfx/text-3.png", "content/gfx/text-2.png", "content/gfx/text-1.png", "content/gfx/text-go.png"]
                      delegate: Image {
                          visible: root.countdown <= index
                          opacity: root.countdown == index ? 0.5 : 0.1
                          scale: root.countdown >= index ? 1.0 : 0.0
                          source: modelData
                          Behavior on opacity { NumberAnimation {} }
                          Behavior on scale { NumberAnimation {} }
                      }
                  }
              }

              NewGameScreen {
                  onStartButtonClicked: root.passedSplash = true
              }
          }

          property int countdown: 10
          Timer {
              id: gameStarter
              interval: 4000
              running: false
              repeat: false
              onTriggered: Logic.startGame(canvas);
          }

          states: [
              State {
                  name: "gameOn"; when: gameState.gameOver == false && passedSplash
                  PropertyChanges { target: view; y: -(height - 960) }
                  StateChangeScript { script: root.countdown = 0; }
                  PropertyChanges { target: gameStarter; running: true }
              },
              State {
                  name: "gameOver"; when: gameState.gameOver == true
                  PropertyChanges { target: view; y: 0 }
              }
          ]

          transitions: Transition {
              NumberAnimation { properties: "x,y"; duration: 1200; easing.type: Easing.OutQuad }
          }

          Component.onCompleted: gameState = Logic.newGameState(canvas);
      }