内容发布更新时间 : 2024/12/23 11:03:17星期一 下面是文章的全部内容请认真阅读。
一个小的简单的游戏引出的心得体会
分解实例1 实例描述:
实现一个按钮,按钮继承自QGraphicObject,
头文件:
class myButton : public QGraphicsObject {
Q_OBJECT public:
myButton(int ,int,QString ,QString ,class MainWindow *); QRectF boundingRect() const; void paint(QPainter *, const QStyleOptionGraphicsItem *, QWidget *); protected:
void hoverEnterEvent ( QGraphicsSceneHoverEvent *) ; void hoverLeaveEvent ( QGraphicsSceneHoverEvent *) ; void mousePressEvent ( QGraphicsSceneMouseEvent *); private:
QPixmap pix; QString img;
QString hoverImg; class MainWindow * m;
Phonon::MediaObject *clickMic; signals:
void clickSig(); };
源文件:
myButton::myButton(int x,int y,QString img,QString hoverImg,class MainWindow * m){ this->img=img;
this->hoverImg=hoverImg; pix.load(img);
setPos(x-pix.width()/2,y-pix.height()/2); this->m=m;
setFlags(QGraphicsItem::ItemIsFocusable); setFlags(QGraphicsItem::ItemIsMovable); setAcceptHoverEvents(true);
clickMic=Phonon::createPlayer(Phonon::MusicCategory,
Phonon::MediaSource(\));
}
QRectF myButton::boundingRect() const{
return QRectF(0, 0, pix.width(), pix.height()); }
void myButton::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget){
painter->drawPixmap(0,0,pix.width(), pix.height(),pix); }
void myButton::hoverEnterEvent ( QGraphicsSceneHoverEvent *) { setFocus(Qt::MouseFocusReason);
pix.load(hoverImg); clickMic->play(); update(); }
void myButton::hoverLeaveEvent ( QGraphicsSceneHoverEvent *) { setFocus(Qt::MouseFocusReason); pix.load(img); update(); }
void myButton::mousePressEvent ( QGraphicsSceneMouseEvent *){ emit clickSig(); }
引用文件:
cjScene = new QGraphicsScene;//新建场景指针 cjScene->clear(); myButton *sbtn=new
myButton(width/2,height/2-200,\,\tn2.png\,this);
connect(sbtn,SIGNAL(clickSig()),this,SLOT(guanKaScene())); cjScene->addItem(sbtn); myButton *soundBtn=new
myButton(width/2,height/2,\,\png\,this);
cjScene->addItem(soundBtn); myButton *quitBtn=new
myButton(width/2,height/2+200,\,\2.png\,this);
connect(quitBtn,SIGNAL(clickSig()),this,SLOT(close())); cjScene->addItem(quitBtn);
cjScene->setSceneRect(0,0,width,height);
cjScene->setBackgroundBrush( QPixmap(\).scaled(width,height));
this->setScene(cjScene);
绘制动画精灵1:
void ninjia::play(){
QTimeLine* timeline=new QTimeLine(200); timeline->setFrameRange(1, 4);
connect(timeline,SIGNAL(frameChanged(int)),this,SLOT(move_play(int)));
timeline->start(); }
void ninjia::move_play(int i){ qDebug()<
QString path=\; pix.load(path); return; }
QString path=\+QString::number(i)+\; pix.load(path); }
绘制动画精灵2:
timeline=new QTimeLine(1000);
timeline->setFrameRange(1, maxFrame); timeline->setLoopCount(0);
connect(timeline,SIGNAL(frameChanged(int)),this, SLOT(move_play(int))); timeline->start();
void target::move_play(int i){ qDebug()<
QString path=imgPath+QString::number(i)+\; pix.load(path); }
精灵的碰撞检测:
bool target::isColliding() {
QList
foreach(item, item_list) {
if(item->data(1)==\){ item->stackBefore(this); }
if((item->data(1)==\||item->data(1)==\)&&(this->boundingRect().y()+this->pos().y()+this->boundingRect().height())<(item->boundingRect().y()+item->pos().y()+item->boundingRect().height())){ this->stackBefore(item); }
if(item->data(1)==\&&item->data(2)!=false){ life=life-((projectile*)item)->gePower(); m->deleteItem((projectile*)item); item->setData(2,false); if(life>0){return true;} m->updateScore(10); this->setData(2,false); return true; } }
return false; }
子弹的发射
void myScene::mousePressEvent( QGraphicsSceneMouseEvent * e ){ projectile *p=new
projectile(x,y,m,angleValue,6,\,m->getAttack()); this->addItem(p); pewMic->pause(); pewMic->play();
QGraphicsScene::mousePressEvent(e); }
子弹的自动移动与移除:
void projectile::advance(int i){
moveBy(cos(angleValue)*speed,sin(angleValue)*speed);
if(this->data(2)==false||pos().x()>this->m->scene()->width()||pos().y()>this->m->scene()->height()||pos().y()<0||pos().x()<0){ drop();//移除本身removeItem(this);
} }
子项目自动运行函数:
void basePropertys::advance(int ){ isColliding(); }
场景中设置文字:
gameScene->setSceneRect(0,0,width,height); setScene(gameScene);
game_score=new QGraphicsTextItem(0, gameScene); game_score->setHtml(\ color = red>分
数:\+QString::number(score)+\);
game_score->setFont(QFont(\, 20, QFont::Bold));
game_score->setPos(10, 10);
game_attack=new QGraphicsTextItem(0, gameScene); game_attack->setHtml(\ color = red>攻击
力:\+QString::number(attackPower)+\);
game_attack->setFont(QFont(\, 20, QFont::Bold)); game_attack->setPos(10, 70);
life_text =new QGraphicsTextItem(0, gameScene); life_text->setHtml(\ color = red>生命:
\+QString::number(attackPower)+\);
life_text->setFont(QFont(\, 20, QFont::Bold));
life_text->setPos(10, 40);
bB=new bloodBar(80,50,this);
gameScene->addItem(bB);
Animation 动画
方法一、items 继承QGraphicsObject,并联合使用QPropertyAnimation