1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
|
/****************************************************************************
**
** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** You may use this file under the terms of the BSD license as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in
** the documentation and/or other materials provided with the
** distribution.
** * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names
** of its contributors may be used to endorse or promote products derived
** from this software without specific prior written permission.
**
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
**
** $QT_END_LICENSE$
**
****************************************************************************/
import QtQuick 2.0
Rectangle {
id: page
width: 320; height: 480;
color: "Black"
// 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: "Lime"
// 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: "Lime"
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: "Lime"
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: "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 }
}
}
|
