tvtennis.qml Example File

animation/behaviors/tvtennis.qml
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import QtQuick 2.0 Rectangle { id: page width: 320; height: 480; color: "#1e1b18" // Make a ball to bounce Rectangle { id: ball // Add a property for the target y coordinate property variant direction : "right" x: 20; width: 20; height: 20; z: 1 color: "#80c342" // Move the ball to the right and back to the left repeatedly SequentialAnimation on x { loops: Animation.Infinite NumberAnimation { to: page.width - 40; duration: 2000 } PropertyAction { target: ball; property: "direction"; value: "left" } NumberAnimation { to: 20; duration: 2000 } PropertyAction { target: ball; property: "direction"; value: "right" } } // Make y move with a velocity of 200 Behavior on y { SpringAnimation{ velocity: 200; } } Component.onCompleted: y = page.height-10; // start the ball motion // Detect the ball hitting the top or bottom of the view and bounce it onYChanged: { if (y <= 0) { y = page.height - 20; } else if (y >= page.height - 20) { y = 0; } } } // Place bats to the left and right of the view, following the y // coordinates of the ball. Rectangle { id: leftBat color: "#328930" x: 2; width: 20; height: 90 // ![0] y: ball.direction == 'left' ? ball.y - 45 : page.height/2 -45; Behavior on y { SpringAnimation{ velocity: 300 } } // ![0] } Rectangle { id: rightBat color: "#328930" x: page.width - 22; width: 20; height: 90 y: ball.direction == 'right' ? ball.y - 45 : page.height/2 -45; Behavior on y { SpringAnimation{ velocity: 300 } } } // The rest, to make it look realistic, if neither ever scores... Rectangle { color: "#328930"; x: page.width/2-80; y: 0; width: 40; height: 60 } Rectangle { color: "#1e1b18"; x: page.width/2-70; y: 10; width: 20; height: 40 } Rectangle { color: "#328930"; x: page.width/2+40; y: 0; width: 40; height: 60 } Rectangle { color: "#1e1b18"; x: page.width/2+50; y: 10; width: 20; height: 40 } Repeater { model: page.height / 20 Rectangle { color: "#328930"; x: page.width/2-5; y: index * 20; width: 10; height: 10 } } }