QT-- eat moon game
Summary:
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The design uses mouse events , keyboard events , graphics events , the characters may be controlled by moving the mouse or arrow keys to eat moon
Code:
widget.h file:
#ifndef WIDGET_H #define WIDGET_H #include <QWidget> #include <QPaintEvent> //绘图事件 #include <QMouseEvent> //鼠标 #include <QPoint> #include <QKeyEvent> //键盘 #include <QPainter> #include <QList> #include <QLineEdit> namespace Ui { class Widget; } class Widget : public QWidget { Q_OBJECT public: explicit Widget(QWidget *parent = nullptr); ~Widget (); public : int random_x; // Save the Moon random coordinates int random_y; int direction; // save keyboard events int Score = 0 ; // score QString Score_data; // save the score BOOL Meet = false ; QPainter * Painter; QLineEdit * Line; void Wall_x ( int & ); void Wall_y (int &); // meets the wall void meet_s (); // encountered the moon, the moon redraw int Xrandom (); // generate random numbers int Yrandom (); // generate random numbers void Direction (); // control People change direction void paintEvent (QPaintEvent * Event ); // drawing void mousePressEvent (QMouseEvent * Event ); // mouse click void mouseMoveEvent (QMouseEvent * Event ); //Drag the mouse void keyPressEvent (QKeyEvent * Event ); // keyboard events Private : QPoint Point; Private : Ui :: Widget * ui; }; #endif // WIDGET_H
#include "widget.h" #include "ui_widget.h" #include <QDebug> #include <QPainter> //绘图画家 #include <QTime> #include <QMutableListIterator> Widget::Widget(QWidget *parent) : QWidget(parent), ui(new Ui::Widget) { ui->setupUi(this); this->setMinimumSize(500,500); //窗口大小 point.setX(this->width()/2); // initialize the figure in the center of the window point.setY ( the this -> width () / 2 ); random_x = Xrandom (); // initialize moon random_y = Yrandom (); } void the Widget :: mousePressEvent (QMouseEvent * Event ) // mouse click { qDebug () << Event -> POS (); Point = Event -> POS (); Update (); } void the Widget ::. mouseMoveEvent (QMouseEvent * Event ) //Mouse drag { qDebug () << Event -> POS (); Point = Event -> POS (); Update (); } void the Widget :: Wall_x ( int & X) // met wall { IF (X <= 20 is ) { X + = 50 ; // met spring back Score - = . 3 ; } the else IF (X> = the this -> width () - 40 ) { X - =50; Score -= 3; } } void Widget::Wall_y(int &y) //遇见墙壁 { if(y <= 20) { y += 50; Score -= 3; } else if (y >= this->height()-40) { y -= 50; Score -= 3; } } void:: keyPressEvent the Widget (QKeyEvent * Event ) // keyboard events, character movement control { int X = point.x (); int Y = point.y (); qDebug () << Event -> Key (); direction = Event -> Key (); Switch ( Event -> Key ()) { Case the Qt :: KEY_UP: // on qDebug () << " on " ; Y - = 10 ; Wall_y (Y); BREAK; case Qt::Key_Down: //下 qDebug() <<"下"; y += 10; Wall_y(y); break; case Qt::Key_Left: //左 qDebug() <<"左"; x -= 10; Wall_x(x); break; case Qt::Key_Right: //右 qDebug() <<"右"; x += 10; Wall_x(x); break; default : break; } point.setX(x) ; point.setY(y); qDebug() <<x <<":" <<y; } int Widget::Xrandom() //产生随机数 { int random_q; QTime time; time= QTime::currentTime(); qsrand(time.msec()+time.second()*1000); random_q = qrand() % (this->width()-40); if(random_q < 20) random_q += 20; return random_q; } int Widget::Yrandom() //产生随机数 { int random_q; QTime time; time= QTime::currentTime(); qsrand(time.msec()+time.second()*1000); random_q = qrand() % (this->height()-40); if(random_q < 20) random_q += 20; return random_q; } void Widget::meet_s() //遇到月亮 { if((point.x()-random_x < 20 && point.x()-random_x > -20)&& (point.y() - random_y < 20 &&point.y() - random_y > -20) ) meet = true; if(!meet) { /* 豆豆 */ QRectF target_Peas(random_x,random_y, 100, 100); QRectF source_Peas(0,0, 400 , 400 ); QPixmap pixmap_Peas ( " : /new/prefix1/peas3.jpg " ); // here to use the resource files that you added pictures within a folder painter-> drawPixmap (target_Peas, pixmap_Peas, source_Peas); } the else { qDebug () << " met " ; random_x = Xrandom (); random_y = Yrandom (); Score ++ ; meet = to false ; } } void the Widget :: the Direction () // the control to change the direction of the character { QRectF target ( - 10 , - 10 , 40.0 , 40.0 ); QRectF Source ( 0.0 , 0.0 , 400.0 , 400.0 ); QPixmap pixmap_right ( " : /new/prefix1/character_right.jpg " ); / / used herein pictures folder in the resource files that you added QPixmap pixmap1_left ( " : /new/prefix1/character_left.jpg " ); // characters move to the left is a picture IF (Qt :: KEY_UP == direction) // on { painter->rotate(-90); painter->drawPixmap(target, pixmap_right, source); } else if(Qt::Key_Down == direction) //下 { painter->rotate(90); painter->drawPixmap(target, pixmap_right, source); } else if(Qt::Key_Left == direction) //左 { painter->drawPixmap(target, pixmap1_left, source); } else //右 { painter->drawPixmap(target, pixmap_right, source); } } void Widget::paintEvent(QPaintEvent *event) { painter = new QPainter(this); /* 画笔 */ QPen pen (Qt::red,10); QPen pen1 (Qt::green,5); painter->setPen(pen1); /* 边框 */ QRectF rectangle(0, 0,this->width(),this->width()); QRectF rectangle1(10, 10, this->width()-20, this->height()-20); /* 背景 */ QRectF target(0,0, this->width(), this->width()); QRectF source(0,0, this->width(), this->width()); QPixmap pixmap_background(":/new/prefix1/background.jpg"); painter->drawPixmap(target, pixmap_background, source); painter->setRenderHint(QPainter::Antialiasing,true); //抗锯齿 /* 画边框 */ painter->drawRect(rectangle); painter->drawRect(rectangle1); /* 得分 */ Score_data = "得分：" + QString::number(Score); painter->drawText(0,0,100,100,Qt::AlignCenter,Score_data); painter->setPen(pen); meet_s (); // draw the moon painter-> Translate (point.x () + 10 , point.y () + 10 ); // Mobile painter Direction (); // draw the characters Update (); // must be refresh } the Widget :: ~ the Widget () { Delete UI; }
