t13-gamebrd-cpp.html
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"><html><head><meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"><title>Qt Tutorial - t13/gamebrd.cpp</title></head><body bgcolor="#ffffff"><p><table width="100%"><tr><td><a href="index.html"><img width="100" height="100" src="qtlogo.png"alt="Home" border="0"><img width="100"height="100" src="face.png" alt="Home" border="0"></a><td valign="top"><div align="right"><img src="dochead.png" width="472" height="27"><br><a href="classes.html"><b>Classes</b></a>- <a href="annotated.html">Annotated</a>- <a href="hierarchy.html">Tree</a>- <a href="functions.html">Functions</a>- <a href="index.html">Home</a>- <a href="topicals.html"><b>Structure</b> <font face="Arial,Helvetica,Geneva,Swiss,SunSans-Regular" align="center" size=32>Qte</font></a></div></table><p><h1 align=center>Source code for <a href="t13.html">tutorial 13</a>: gamebrd.cpp</h1><br clear="all"><hr> <pre>/******************************************************************** Implementation of GameBoard class, Qt tutorial 13******************************************************************/#include "gamebrd.h"#include <<a href="qfont-h.html">qfont.h</a>>#include <<a href="qapplication-h.html">qapplication.h</a>>#include <<a href="qlabel-h.html">qlabel.h</a>>#include <<a href="qpushbutton-h.html">qpushbutton.h</a>>#include <<a href="qlcdnumber-h.html">qlcdnumber.h</a>>#include <<a href="qlayout-h.html">qlayout.h</a>>#include "lcdrange.h"#include "cannon.h"GameBoard::GameBoard( <a href="qwidget.html">QWidget</a> *parent, const char *name ) : <a href="qwidget.html">QWidget</a>( parent, name ){ <a href="qpushbutton.html">QPushButton</a> *quit = new <a href="qpushbutton.html">QPushButton</a>( "&Quit", this, "quit" ); quit-><a href="qwidget.html#090d60">setFont</a>( <a href="qfont.html">QFont</a>( "Times", 18, QFont::Bold ) ); <a href="qobject.html#fbde73">connect</a>( quit, SIGNAL(clicked()), qApp, SLOT(quit()) ); LCDRange *angle = new LCDRange( "ANGLE", this, "angle" ); angle->setRange( 5, 70 ); LCDRange *force = new LCDRange( "FORCE", this, "force" ); force->setRange( 10, 50 ); cannonField = new CannonField( this, "cannonField" ); <a href="qobject.html#fbde73">connect</a>( angle, SIGNAL(valueChanged(int)), cannonField, SLOT(setAngle(int)) ); <a href="qobject.html#fbde73">connect</a>( cannonField, SIGNAL(angleChanged(int)), angle, SLOT(setValue(int)) ); <a href="qobject.html#fbde73">connect</a>( force, SIGNAL(valueChanged(int)), cannonField, SLOT(setForce(int)) ); <a href="qobject.html#fbde73">connect</a>( cannonField, SIGNAL(forceChanged(int)), force, SLOT(setValue(int)) ); <a href="qobject.html#fbde73">connect</a>( cannonField, SIGNAL(<a href=#574>hit</a>()), this, SLOT(<a href=#574>hit</a>()) ); <a href="qobject.html#fbde73">connect</a>( cannonField, SIGNAL(<a href=#575>missed</a>()), this, SLOT(<a href=#575>missed</a>()) ); <a href="qpushbutton.html">QPushButton</a> *shoot = new <a href="qpushbutton.html">QPushButton</a>( "&Shoot", this, "shoot" ); shoot-><a href="qwidget.html#090d60">setFont</a>( <a href="qfont.html">QFont</a>( "Times", 18, QFont::Bold ) ); <a href="qobject.html#fbde73">connect</a>( shoot, SIGNAL(clicked()), SLOT(<a href=#573>fire</a>()) ); <a href="qobject.html#fbde73">connect</a>( cannonField, SIGNAL(canShoot(bool)), shoot, SLOT(<a href="qwidget.html#4b103c">setEnabled</a>(bool)) ); <a href="qpushbutton.html">QPushButton</a> *restart = new <a href="qpushbutton.html">QPushButton</a>( "&New Game", this, "newgame" ); restart-><a href="qwidget.html#090d60">setFont</a>( <a href="qfont.html">QFont</a>( "Times", 18, QFont::Bold ) ); <a href="qobject.html#fbde73">connect</a>( restart, SIGNAL(clicked()), this, SLOT(<a href=#576>newGame</a>()) ); hits = new <a href="qlcdnumber.html">QLCDNumber</a>( 2, this, "hits" ); shotsLeft = new <a href="qlcdnumber.html">QLCDNumber</a>( 2, this, "shotsleft" ); <a href="qlabel.html">QLabel</a> *hitsL = new <a href="qlabel.html">QLabel</a>( "HITS", this, "hitsLabel" ); <a href="qlabel.html">QLabel</a> *shotsLeftL = new <a href="qlabel.html">QLabel</a>( "SHOTS LEFT", this, "shotsleftLabel" ); <a href="qgridlayout.html">QGridLayout</a> *grid = new <a href="qgridlayout.html">QGridLayout</a>( this, 2, 2, 10 ); grid-><a href="qgridlayout.html#dac29c">addWidget</a>( quit, 0, 0 ); grid-><a href="qgridlayout.html#dac29c">addWidget</a>( cannonField, 1, 1 ); grid-><a href="qgridlayout.html#df80c4">setColStretch</a>( 1, 10 ); <a href="qvboxlayout.html">QVBoxLayout</a> *leftBox = new <a href="qvboxlayout.html">QVBoxLayout</a>; grid-><a href="qgridlayout.html#a409bc">addLayout</a>( leftBox, 1, 0 ); leftBox-><a href="qboxlayout.html#ebba99">addWidget</a>( angle ); leftBox-><a href="qboxlayout.html#ebba99">addWidget</a>( force ); <a href="qhboxlayout.html">QHBoxLayout</a> *topBox = new <a href="qhboxlayout.html">QHBoxLayout</a>; grid-><a href="qgridlayout.html#a409bc">addLayout</a>( topBox, 0, 1 ); topBox-><a href="qboxlayout.html#ebba99">addWidget</a>( shoot ); topBox-><a href="qboxlayout.html#ebba99">addWidget</a>( hits ); topBox-><a href="qboxlayout.html#ebba99">addWidget</a>( hitsL ); topBox-><a href="qboxlayout.html#ebba99">addWidget</a>( shotsLeft ); topBox-><a href="qboxlayout.html#ebba99">addWidget</a>( shotsLeftL ); topBox-><a href="qboxlayout.html#0226eb">addStretch</a>( 1 ); topBox-><a href="qboxlayout.html#ebba99">addWidget</a>( restart ); angle->setValue( 60 ); force->setValue( 25 ); angle-><a href="qwidget.html#25775a">setFocus</a>(); <a href=#576>newGame</a>();}void <a name="573"></a>GameBoard::fire(){ if ( cannonField->gameOver() || cannonField->isShooting() ) return; shotsLeft->display( shotsLeft->intValue() - 1 ); cannonField->shoot();}void <a name="574"></a>GameBoard::hit(){ hits->display( hits->intValue() + 1 ); if ( shotsLeft->intValue() == 0 ) cannonField->setGameOver(); else cannonField->newTarget();}void <a name="575"></a>GameBoard::missed(){ if ( shotsLeft->intValue() == 0 ) cannonField->setGameOver();}void <a name="576"></a>GameBoard::newGame(){ shotsLeft->display( 15 ); hits->display( 0 ); cannonField->restartGame(); cannonField->newTarget();}</pre><p><p><address><hr><div align="center"><table width="100%" cellspacing="0" border="0"><tr><td>Copyright ⌨️ 快捷键说明
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