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import Qt 4.6
Rectangle {
id: Page
width: 640; height: 480
color: "#000000"
// Make a ball to bounce
Rectangle {
// Add a property for the target y coordinate
property var targetY : Page.height-10
property var direction : "right"
id: Ball
color: "#00ee00"
x: 20; width: 20; height: 20; z: 1
// Move the ball to the right and back to the left repeatedly
x: SequentialAnimation {
running: true; repeat: true
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 follow the target y coordinate, with a velocity of 200
y: Follow { source: Ball.targetY; velocity: 200 }
// Detect the ball hitting the top or bottom of the view and bounce it
onYChanged: {
if (y <= 0)
targetY = Page.height-20;
else if (y >= Page.height-20)
targetY = 0;
}
}
// Place bats to the left and right of the view, following the y
// coordinates of the ball.
Rectangle {
id: LeftBat
color: "#00ee00"
x: 2; width: 20; height: 90
y: Follow {
source: Ball.y-45; velocity: 300
enabled: Ball.direction == 'left'
}
}
Rectangle {
id: RightBat
color: "#00ee00"
x: Page.width-22; width: 20; height: 90
y: Follow {
source: Ball.y-45; velocity: 300
enabled: Ball.direction == 'right'
}
}
// The rest, to make it look realistic, if neither ever scores...
Rectangle { color: "#00ee00"; x: Page.width/2-80; y: 0; width: 40; height: 60 }
Rectangle { color: "#000000"; x: Page.width/2-70; y: 10; width: 20; height: 40 }
Rectangle { color: "#00ee00"; x: Page.width/2+40; y: 0; width: 40; height: 60 }
Rectangle { color: "#000000"; x: Page.width/2+50; y: 10; width: 20; height: 40 }
Repeater {
dataSource: Page.height/20
Rectangle { color: "#00ee00"; x: Page.width/2-5; y: index*20; width: 10; height: 10 }
}
}
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