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import Qt 4.7
import Qt.multimedia 4.7
Rectangle {
id: page
width: 640; height: 480
color: "Black"
// Make a ball to bounce
Rectangle {
id: ball
// Add a property for the target y coordinate
property int targetY : page.height - 10
property variant direction : "right"
x: 20; width: 20; height: 20; z: 1
color: "Lime"
SoundEffect { id: paddle; source: "paddle.wav" }
SoundEffect { id: wall; source: "click.wav" }
// 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 }
ScriptAction { script: paddle.play() }
PropertyAction { target: ball; property: "direction"; value: "left" }
NumberAnimation { to: 20; duration: 2000 }
ScriptAction { script: paddle.play() }
PropertyAction { target: ball; property: "direction"; value: "right" }
}
// Make y follow the target y coordinate, with a velocity of 200
SpringFollow on y { to: ball.targetY; velocity: 200 }
// Detect the ball hitting the top or bottom of the view and bounce it
onYChanged: {
if (y <= 0) {
wall.play();
targetY = page.height - 20;
} else if (y >= page.height - 20) {
wall.play();
targetY = 0;
}
}
}
// Place bats to the left and right of the view, following the y
// coordinates of the ball.
Rectangle {
id: leftBat
color: "Lime"
x: 2; width: 20; height: 90
SpringFollow on y {
to: ball.y - 45; velocity: 300
enabled: ball.direction == 'left'
}
}
Rectangle {
id: rightBat
color: "Lime"
x: page.width - 22; width: 20; height: 90
SpringFollow on y {
to: ball.y-45; velocity: 300
enabled: ball.direction == 'right'
}
}
// The rest, to make it look realistic, if neither ever scores...
Rectangle { color: "Lime"; x: page.width/2-80; y: 0; width: 40; height: 60 }
Rectangle { color: "Black"; x: page.width/2-70; y: 10; width: 20; height: 40 }
Rectangle { color: "Lime"; x: page.width/2+40; y: 0; width: 40; height: 60 }
Rectangle { color: "Black"; x: page.width/2+50; y: 10; width: 20; height: 40 }
Repeater {
model: page.height / 20
Rectangle { color: "Lime"; x: page.width/2-5; y: index * 20; width: 10; height: 10 }
}
}
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