<?xml version="1.0" encoding="iso-8859-1"?>
<!DOCTYPE html
PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<title>Qt 4.2: toplevel.cpp Example File (graphicsview/portedasteroids/toplevel.cpp)</title>
<link href="classic.css" rel="stylesheet" type="text/css" />
</head>
<body>
<table border="0" cellpadding="0" cellspacing="0" width="100%">
<tr>
<td align="left" valign="top" width="32"><a href="http://www.trolltech.com/products/qt"><img src="images/qt-logo.png" align="left" width="32" height="32" border="0" /></a></td>
<td width="1"> </td><td class="postheader" valign="center"><a href="index.html"><font color="#004faf">Home</font></a> · <a href="classes.html"><font color="#004faf">All Classes</font></a> · <a href="mainclasses.html"><font color="#004faf">Main Classes</font></a> · <a href="groups.html"><font color="#004faf">Grouped Classes</font></a> · <a href="modules.html"><font color="#004faf">Modules</font></a> · <a href="functions.html"><font color="#004faf">Functions</font></a></td>
<td align="right" valign="top" width="230"><a href="http://www.trolltech.com"><img src="images/trolltech-logo.png" align="right" width="203" height="32" border="0" /></a></td></tr></table><h1 align="center">toplevel.cpp Example File<br /><sup><sup>graphicsview/portedasteroids/toplevel.cpp</sup></sup></h1>
<pre> /****************************************************************************
**
** Copyright (C) 2006-2006 Trolltech ASA. All rights reserved.
**
** This file is part of the example classes of the Qt Toolkit.
**
** This file may be used under the terms of the GNU General Public
** License version 2.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of
** this file. Please review the following information to ensure GNU
** General Public Licensing requirements will be met:
** http:<span class="comment">//www.trolltech.com/products/qt/opensource.html</span>
**
** If you are unsure which license is appropriate for your use, please
** review the following information:
** http:<span class="comment">//www.trolltech.com/products/qt/licensing.html or contact the</span>
** sales department at sales@trolltech.com.
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
****************************************************************************/
/*
* KAsteroids - Copyright (c) Martin R. Jones 1997
*
* Part of the KDE project
*/
<span class="comment"> // --- toplevel.cpp ---</span>
#include <q3accel.h>
#include <qlabel.h>
#include <qlayout.h>
#include <qlcdnumber.h>
#include <qpushbutton.h>
#include <qapplication.h>
<span class="comment"> //Added by qt3to4:</span>
#include <Q3HBoxLayout>
#include <QShowEvent>
#include <Q3Frame>
#include <QPixmap>
#include <QHideEvent>
#include <QKeyEvent>
#include <Q3VBoxLayout>
#include "toplevel.h"
#include "ledmeter.h"
#define SB_SCORE 1
#define SB_LEVEL 2
#define SB_SHIPS 3
struct SLevel
{
int nrocks;
double rockSpeed;
};
#define MAX_LEVELS 16
SLevel levels[MAX_LEVELS] =
{
{ 1, 0.4 },
{ 1, 0.6 },
{ 2, 0.5 },
{ 2, 0.7 },
{ 2, 0.8 },
{ 3, 0.6 },
{ 3, 0.7 },
{ 3, 0.8 },
{ 4, 0.6 },
{ 4, 0.7 },
{ 4, 0.8 },
{ 5, 0.7 },
{ 5, 0.8 },
{ 5, 0.9 },
{ 5, 1.0 }
};
const char *soundEvents[] =
{
"ShipDestroyed",
"RockDestroyed",
0
};
const char *soundDefaults[] =
{
"Explosion.wav",
"ploop.wav",
0
};
KAstTopLevel::KAstTopLevel( QWidget *parent, const char *name )
: Q3MainWindow( parent, name, 0 )
{
QWidget *border = new QWidget( this );
border->setBackgroundColor( Qt::black );
setCentralWidget( border );
Q3VBoxLayout *borderLayout = new Q3VBoxLayout( border );
borderLayout->addStretch( 1 );
QWidget *mainWin = new QWidget( border );
mainWin->setFixedSize(640, 480);
borderLayout->addWidget( mainWin, 0, Qt::AlignHCenter );
borderLayout->addStretch( 1 );
view = new KAsteroidsView( mainWin );
view->setFocusPolicy( Qt::StrongFocus );
connect( view, SIGNAL( shipKilled() ), SLOT( slotShipKilled() ) );
connect( view, SIGNAL( rockHit(int) ), SLOT( slotRockHit(int) ) );
connect( view, SIGNAL( rocksRemoved() ), SLOT( slotRocksRemoved() ) );
connect( view, SIGNAL( updateVitals() ), SLOT( slotUpdateVitals() ) );
Q3VBoxLayout *vb = new Q3VBoxLayout( mainWin );
Q3HBoxLayout *hb = new Q3HBoxLayout;
Q3HBoxLayout *hbd = new Q3HBoxLayout;
vb->addLayout( hb );
QFont labelFont( "helvetica", 24 );
QColorGroup grp( Qt::darkGreen, Qt::black, QColor( 128, 128, 128 ),
QColor( 64, 64, 64 ), Qt::black, Qt::darkGreen, Qt::black );
QPalette pal( grp, grp, grp );
mainWin->setPalette( pal );
hb->addSpacing( 10 );
QLabel *label;
label = new QLabel( tr("Score"), mainWin );
label->setFont( labelFont );
label->setPalette( pal );
label->setFixedWidth( label->sizeHint().width() );
hb->addWidget( label );
scoreLCD = new QLCDNumber( 6, mainWin );
scoreLCD->setFrameStyle( Q3Frame::NoFrame );
scoreLCD->setSegmentStyle( QLCDNumber::Flat );
scoreLCD->setFixedWidth( 150 );
scoreLCD->setPalette( pal );
hb->addWidget( scoreLCD );
hb->addStretch( 10 );
label = new QLabel( tr("Level"), mainWin );
label->setFont( labelFont );
label->setPalette( pal );
label->setFixedWidth( label->sizeHint().width() );
hb->addWidget( label );
levelLCD = new QLCDNumber( 2, mainWin );
levelLCD->setFrameStyle( Q3Frame::NoFrame );
levelLCD->setSegmentStyle( QLCDNumber::Flat );
levelLCD->setFixedWidth( 70 );
levelLCD->setPalette( pal );
hb->addWidget( levelLCD );
hb->addStretch( 10 );
label = new QLabel( tr("Ships"), mainWin );
label->setFont( labelFont );
label->setFixedWidth( label->sizeHint().width() );
label->setPalette( pal );
hb->addWidget( label );
shipsLCD = new QLCDNumber( 1, mainWin );
shipsLCD->setFrameStyle( Q3Frame::NoFrame );
shipsLCD->setSegmentStyle( QLCDNumber::Flat );
shipsLCD->setFixedWidth( 40 );
shipsLCD->setPalette( pal );
hb->addWidget( shipsLCD );
hb->addStrut( 30 );
vb->addWidget( view, 10 );
<span class="comment"> // -- bottom layout:</span>
vb->addLayout( hbd );
QFont smallFont( "helvetica", 14 );
hbd->addSpacing( 10 );
QString sprites_prefix = ":/trolltech/examples/graphicsview/portedasteroids/sprites/";
/*
label = new QLabel( tr( "T" ), mainWin );
label->setFont( smallFont );
label->setFixedWidth( label->sizeHint().width() );
label->setPalette( pal );
hbd->addWidget( label );
teleportsLCD = new QLCDNumber( 1, mainWin );
teleportsLCD->setFrameStyle( QFrame::NoFrame );
teleportsLCD->setSegmentStyle( QLCDNumber::Flat );
teleportsLCD->setPalette( pal );
teleportsLCD->setFixedHeight( 20 );
hbd->addWidget( teleportsLCD );
hbd->addSpacing( 10 );
*/
QPixmap pm( sprites_prefix + "powerups/brake.png" );
label = new QLabel( mainWin );
label->setPixmap( pm );
label->setFixedWidth( label->sizeHint().width() );
label->setPalette( pal );
hbd->addWidget( label );
brakesLCD = new QLCDNumber( 1, mainWin );
brakesLCD->setFrameStyle( Q3Frame::NoFrame );
brakesLCD->setSegmentStyle( QLCDNumber::Flat );
brakesLCD->setPalette( pal );
brakesLCD->setFixedHeight( 20 );
hbd->addWidget( brakesLCD );
hbd->addSpacing( 10 );
pm.load( sprites_prefix + "powerups/shield.png" );
label = new QLabel( mainWin );
label->setPixmap( pm );
label->setFixedWidth( label->sizeHint().width() );
label->setPalette( pal );
hbd->addWidget( label );
shieldLCD = new QLCDNumber( 1, mainWin );
shieldLCD->setFrameStyle( Q3Frame::NoFrame );
shieldLCD->setSegmentStyle( QLCDNumber::Flat );
shieldLCD->setPalette( pal );
shieldLCD->setFixedHeight( 20 );
hbd->addWidget( shieldLCD );
hbd->addSpacing( 10 );
pm.load( sprites_prefix + "powerups/shoot.png" );
label = new QLabel( mainWin );
label->setPixmap( pm );
label->setFixedWidth( label->sizeHint().width() );
label->setPalette( pal );
hbd->addWidget( label );
shootLCD = new QLCDNumber( 1, mainWin );
shootLCD->setFrameStyle( Q3Frame::NoFrame );
shootLCD->setSegmentStyle( QLCDNumber::Flat );
shootLCD->setPalette( pal );
shootLCD->setFixedHeight( 20 );
hbd->addWidget( shootLCD );
hbd->addStretch( 1 );
label = new QLabel( tr( "Fuel" ), mainWin );
label->setFont( smallFont );
label->setFixedWidth( label->sizeHint().width() + 10 );
label->setPalette( pal );
hbd->addWidget( label );
powerMeter = new KALedMeter( mainWin );
powerMeter->setFrameStyle( Q3Frame::Box | Q3Frame::Plain );
powerMeter->setRange( MAX_POWER_LEVEL );
powerMeter->addColorRange( 10, Qt::darkRed );
powerMeter->addColorRange( 20, QColor(160, 96, 0) );
powerMeter->addColorRange( 70, Qt::darkGreen );
powerMeter->setCount( 40 );
powerMeter->setPalette( pal );
powerMeter->setFixedSize( 200, 12 );
hbd->addWidget( powerMeter );
shipsRemain = 3;
showHiscores = FALSE;
actions.insert( Qt::Key_Up, Thrust );
actions.insert( Qt::Key_Left, RotateLeft );
actions.insert( Qt::Key_Right, RotateRight );
actions.insert( Qt::Key_Space, Shoot );
actions.insert( Qt::Key_Z, Teleport );
actions.insert( Qt::Key_X, Brake );
actions.insert( Qt::Key_S, Shield );
actions.insert( Qt::Key_P, Pause );
actions.insert( Qt::Key_L, Launch );
actions.insert( Qt::Key_N, NewGame );
view->showText( tr( "Press N to start playing" ), Qt::yellow );
}
KAstTopLevel::~KAstTopLevel()
{
}
void KAstTopLevel::playSound( const char * )
{
}
void KAstTopLevel::keyPressEvent( QKeyEvent *event )
{
if ( event->isAutoRepeat() || !actions.contains( event->key() ) )
{
event->ignore();
return;
}
Action a = actions[ event->key() ];
switch ( a )
{
case RotateLeft:
view->rotateLeft( TRUE );
break;
case RotateRight:
view->rotateRight( TRUE );
break;
case Thrust:
view->thrust( TRUE );
break;
case Shoot:
view->shoot( TRUE );
break;
case Shield:
view->setShield( TRUE );
break;
case Teleport:
view->teleport( TRUE );
break;
case Brake:
view->brake( TRUE );
break;
default:
event->ignore();
return;
}
event->accept();
}
void KAstTopLevel::keyReleaseEvent( QKeyEvent *event )
{
if ( event->isAutoRepeat() || !actions.contains( event->key() ) )
{
event->ignore();
return;
}
Action a = actions[ event->key() ];
switch ( a )
{
case RotateLeft:
view->rotateLeft( FALSE );
break;
case RotateRight:
view->rotateRight( FALSE );
break;
case Thrust:
view->thrust( FALSE );
break;
case Shoot:
view->shoot( FALSE );
break;
case Brake:
view->brake( FALSE );
break;
case Shield:
view->setShield( FALSE );
break;
case Teleport:
view->teleport( FALSE );
break;
case Launch:
if ( waitShip )
{
view->newShip();
waitShip = FALSE;
view->hideText();
}
else
{
event->ignore();
return;
}
break;
case NewGame:
slotNewGame();
break;
/*
case Pause:
{
view->pause( TRUE );
QMessageBox::information( this,
tr("KAsteroids is paused"),
tr("Paused") );
view->pause( FALSE );
}
break;
*/
default:
event->ignore();
return;
}
event->accept();
}
void KAstTopLevel::showEvent( QShowEvent *e )
{
Q3MainWindow::showEvent( e );
view->pause( FALSE );
view->setFocus();
}
void KAstTopLevel::hideEvent( QHideEvent *e )
{
Q3MainWindow::hideEvent( e );
view->pause( TRUE );
}
void KAstTopLevel::slotNewGame()
{
score = 0;
shipsRemain = SB_SHIPS;
scoreLCD->display( 0 );
level = 0;
levelLCD->display( level+1 );
shipsLCD->display( shipsRemain-1 );
view->newGame();
view->setRockSpeed( levels[0].rockSpeed );
view->addRocks( levels[0].nrocks );
<span class="comment"> // view->showText( tr( "Press L to launch." ), yellow );</span>
view->newShip();
waitShip = FALSE;
view->hideText();
isPaused = FALSE;
}
void KAstTopLevel::slotShipKilled()
{
shipsRemain--;
shipsLCD->display( shipsRemain-1 );
playSound( "ShipDestroyed" );
if ( shipsRemain )
{
waitShip = TRUE;
view->showText( tr( "Ship Destroyed. Press L to launch."), Qt::yellow );
}
else
{
view->showText( tr("Game Over!"), Qt::red );
view->endGame();
doStats();
<span class="comment"> // highscore->addEntry( score, level, showHiscores );</span>
}
}
void KAstTopLevel::slotRockHit( int size )
{
switch ( size )
{
case 0:
score += 10;
break;
case 1:
score += 20;
break;
default:
score += 40;
}
playSound( "RockDestroyed" );
scoreLCD->display( score );
}
void KAstTopLevel::slotRocksRemoved()
{
level++;
if ( level >= MAX_LEVELS )
level = MAX_LEVELS - 1;
view->setRockSpeed( levels[level-1].rockSpeed );
view->addRocks( levels[level-1].nrocks );
levelLCD->display( level+1 );
}
void KAstTopLevel::doStats()
{
QString r( "0.00" );
if ( view->shots() )
r = QString::number( (double)view->hits() / view->shots() * 100.0,
'g', 2 );
/* multi-line text broken in Qt 3
QString s = tr( "Game Over\n\nShots fired:\t%1\n Hit:\t%2\n Missed:\t%3\nHit ratio:\t%4 %\n\nPress N for a new game" )
.arg(view->shots()).arg(view->hits())
.arg(view->shots() - view->hits())
.arg(r);
*/
view->showText( "Game Over. Press N for a new game.", Qt::yellow, FALSE );
}
void KAstTopLevel::slotUpdateVitals()
{
brakesLCD->display( view->brakeCount() );
shieldLCD->display( view->shieldCount() );
shootLCD->display( view->shootCount() );
<span class="comment"> // teleportsLCD->display( view->teleportCount() );</span>
powerMeter->setValue( view->power() );
}</pre>
<p /><address><hr /><div align="center">
<table width="100%" cellspacing="0" border="0"><tr class="address">
<td width="30%">Copyright © 2006 <a href="trolltech.html">Trolltech</a></td>
<td width="40%" align="center"><a href="trademarks.html">Trademarks</a></td>
<td width="30%" align="right"><div align="right">Qt 4.2.1</div></td>
</tr></table></div></address></body>
</html>
