QT–吃月亮小游戏
简介：
- 该设计使用了鼠标事件、键盘事件、绘图事件，可通过鼠标或者方向键控制人物移动吃到月亮
代码：
widget.h文件：
#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; //保存月亮随机坐标
int random_y;
int direction; //保存键盘事件
int Score = 0; //得分
QString Score_data; //保存得分
bool meet = false;
QPainter *painter;
QLineEdit *line;
void Wall_x(int &);
void Wall_y(int &); //遇见墙壁
void meet_s(); //遇到月亮，重画月亮
int Xrandom(); //产生随机数
int Yrandom(); //产生随机数
void Direction(); //控制人物改变方向
void paintEvent(QPaintEvent *event); //绘图
void mousePressEvent(QMouseEvent *event); //鼠标点击
void mouseMoveEvent(QMouseEvent *event); //鼠标拖动
void keyPressEvent(QKeyEvent *event); //键盘事件
private:
QPoint point;
private:
Ui::Widget *ui;
};
#endif // WIDGET_H
widget.cpp文件：
#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); //初始化人物 在窗口中央
point.setY(this->width()/2);
random_x = Xrandom(); //初始化月亮
random_y = Yrandom();
}
void Widget::mousePressEvent(QMouseEvent *event) //鼠标点击
{
qDebug() << event->pos() ;
point = event->pos();
update();
}
void Widget:: mouseMoveEvent(QMouseEvent *event) //鼠标拖动
{
qDebug() <<event->pos();
point = event->pos();
update();
}
void Widget::Wall_x(int &x) //遇见墙壁
{
if(x <= 20)
{
x += 50; //遇见就弹回
Score -= 3;
}
else if (x >= 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 Widget::keyPressEvent(QKeyEvent *event) //键盘事件，控制人物移动
{
int x = point.x();
int y = point.y();
qDebug() << event->key() ;
direction = event->key();
switch(event->key())
{
case Qt::Key_Up: //上
qDebug() <<"上";
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"); //此处使用自己添加的资源文件夹内的图片
painter->drawPixmap(target_Peas, pixmap_Peas, source_Peas);
}
else
{
qDebug() <<"遇见";
random_x = Xrandom();
random_y = Yrandom();
Score++;
meet = false;
}
}
void Widget::Direction() //控制人物改变方向
{
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"); //此处使用自己添加的资源文件夹内的图片
QPixmap pixmap1_left(":/new/prefix1/character_left.jpg"); //人物向左移动是的图片
if(Qt::Key_Up == direction) //上
{
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(); //绘制月亮
painter->translate(point.x()+10,point.y()+10); //移动画家
Direction(); //画人物
update(); //必须要刷新
}
Widget::~Widget()
{
delete ui;
}
运行效果图：
