基于QT5.4的C++贪吃蛇小游戏
游戏核心代码：
void myWidget::timerEvent(QTimerEvent *e){//定时器
if(e->timerId() == timerId && gamePause){
if(direction == s_right){
goRight();
}else if(direction == s_up){
goUp();
}else if(direction == s_down){
goDown();
}else if(direction == s_left){
goLeft();
}
//qDebug()<<score;
if(isEated){
strScore = QString::number(score);
ui->label->setText(strScore);
}
update();
if(crashed){
player->stop();
player_gg->play();
Sleep(1000);
MessageBox(0, TEXT("不要灰心！继续游戏？？"), TEXT("Sorry，defeat!!"), 0);//游戏结束时
gamePause = !gamePause;
init();
strScore = QString::number(score);
ui->label->setText(strScore);
}
}
}
void myWidget::keyPressEvent(QKeyEvent *e){//键盘事件监听
// qDebug()<<(char)e->key();
if(gameStart){//游戏开始时才可以手动
if(e->key() == Qt::Key_W){
if(direction == s_down) return;//不做处理
direction = s_up;
//if(e->isAutoRepeat())//重复按下再快跑会有迟钝效果。。
goUp();
if(isEated)
createApple();//随机产生苹果位置
}else if(e->key() == Qt::Key_S){
if(direction == s_up) return;//不做处理
direction = s_down;
goDown();
if(isEated)
createApple();//随机产生苹果位置
}else if(e->key() == Qt::Key_A){
if(direction == s_right) return;//不做处理
direction = s_left;
goLeft();
if(isEated)
createApple();//随机产生苹果位置
}else if(e->key() == Qt::Key_D){
if(direction == s_left) return;//不做处理
direction = s_right;
goRight();
if(isEated)
createApple();//随机产生苹果位置
}
strScore = QString::number(score);
ui->label->setText(strScore);
update();
}
}
void myWidget::paintEvent(QPaintEvent *)
{
//QPainter p(this);
QPainter p;//创建画家对象
p.begin(this);//指定当前窗口为绘图设备
//绘图操作
//p.drawPixmap(0,0,width(),height(),QPixmap("../image/bg.jpg"));//背景图
if(bg)
p.drawPixmap(rect(),QPixmap("../image/bg.jpg"));//背景图
else{
p.drawPixmap(rect(),QPixmap("../image/bg.png"));//背景图
}
//定义画笔
QPen pen;
pen.setWidth(6);
pen.setColor(RGB(60,60,60));
p.setPen(pen);//把画笔交给画家
// p.drawRect(startX,startY,Cwidth,Cheight);//画出游戏边界
for(int i=-1;i<=W;i++){//画出游戏边界
p.drawPixmap(i*Bsize+startX,-1*Bsize+startY,Bsize,Bsize,QPixmap("../image/shitou.png"));
p.drawPixmap(i*Bsize+startX,21*Bsize+startY,Bsize,Bsize,QPixmap("../image/shitou.png"));
}
for(int j=0;j<H;j++){//画出游戏边界
p.drawPixmap(-1*Bsize+startX,j*Bsize+startY,Bsize,Bsize,QPixmap("../image/shitou.png"));
p.drawPixmap(25*Bsize+startX,j*Bsize+startY,Bsize,Bsize,QPixmap("../image/shitou.png"));
}
if(Sround == 1){//画出第一关障碍物
for(int i=4;i<=8;i++){
p.drawPixmap(6*Bsize+startX,i*Bsize+startY,Bsize,Bsize,QPixmap("../image/wall.png"));
p.drawPixmap(18*Bsize+startX,i*Bsize+startY,Bsize,Bsize,QPixmap("../image/wall.png"));
}
for(int i=11;i<=15;i++){
p.drawPixmap(6*Bsize+startX,i*Bsize+startY,Bsize,Bsize,QPixmap("../image/wall.png"));
p.drawPixmap(18*Bsize+startX,i*Bsize+startY,Bsize,Bsize,QPixmap("../image/wall.png"));
}
for(int i=7;i<=10;i++){
p.drawPixmap(i*Bsize+startX,4*Bsize+startY,Bsize,Bsize,QPixmap("../image/wall.png"));
p.drawPixmap(i*Bsize+startX,15*Bsize+startY,Bsize,Bsize,QPixmap("../image/wall.png"));
}
for(int i=14;i<=17;i++){
p.drawPixmap(i*Bsize+startX,4*Bsize+startY,Bsize,Bsize,QPixmap("../image/wall.png"));
p.drawPixmap(i*Bsize+startX,15*Bsize+startY,Bsize,Bsize,QPixmap("../image/wall.png"));
}
}
/*pen.setWidth(1);//重新设置画笔宽度
p.setPen(pen);//把画笔交给画家
for(int i=startX,j=startY;j<startY+Cheight;j+=Bsize){//画格子辅助线
p.drawLine(i,j,i+Cwidth,j);
}
for(int i=startX,j=startY;i<startX+Cwidth;i+=Bsize){
p.drawLine(i,j,i,j+Cheight);
}*/
strScore = QString::number(score);//刷新分数
ui->label->setText(strScore);
if(appleX%2==0)//画苹果
p.drawPixmap(posAppleX,posAppleY-2,appleW,appleH,QPixmap("../image/apple1.png"));
else//画月饼
p.drawPixmap(posAppleX,posAppleY,Bsize,Bsize,QPixmap("../image/shead.png"));
if(isEated){
createApple();//随机产生苹果位置
update();
}
for(std::vector<Point>::iterator it=s.snakeBody.begin();it!=s.snakeBody.end();it++){//遍历蛇身，画蛇
Smap[(*it).x()][(*it).y()] = 1;
if(it == s.snakeBody.end()-1){//vector数组尾作为蛇头，红点
headX = (*it).x();//蛇头坐标
headY = (*it).y();//蛇头坐标
int posHeadX = headX*Bsize+startX;//蛇头像素位置
int posHeadY = headY*Bsize+startY;//蛇头像素位置
if(direction == s_up){
p.drawPixmap(posHeadX-10,posHeadY-15,2*Bsize,2*Bsize,QPixmap("../image/shead_up.png"));
}else if(direction == s_down){
p.drawPixmap(posHeadX-10,posHeadY-5,2*Bsize,2*Bsize,QPixmap("../image/shead_down.png"));
}else if(direction == s_left){
p.drawPixmap(posHeadX-15,posHeadY-10,2*Bsize,2*Bsize,QPixmap("../image/shead_left.png"));
}else if(direction == s_right){
p.drawPixmap(posHeadX-5,posHeadY-10,2*Bsize,2*Bsize,QPixmap("../image/shead_right.png"));
}
}else{//蛇身黑点
int xx=(*it).x()*Bsize+startX;
int yy=(*it).y()*Bsize+startY;
p.drawPixmap(xx,yy,Bsize,Bsize,QPixmap("../image/snake1.png"));
}
if (headX == appleX && headY == appleY){//吃到了！
isEated = true;
}
}
p.end();
}
void init() {//每次游戏开始的数据初始化
for (int i = 0; i < W; i++)
for (int j = 0; j < H; j++)
Smap[i][j] = 0;
s.snakeBody.clear();
direction = s_right;
crashed = false;
gameStart = false;
score = 0;
gameStartClickCount = 0;
snakeInit();//初始化蛇身
setRound();//设置第几关
createApple();//随机产生苹果位置
}
void createApple() {//随机产生苹果位置
if (isEated){
player_eat->play();//吃到音效
score += 10;
}
while (true) {
srand((int)time(NULL));
int row = rand() % 21;//产生0~24的随机数
int col = rand() % 25;
if (Smap[col][row] == 0) {
//Smap[row][col] = 1;
appleX = col;
appleY = row;
posAppleX = appleX*Bsize+startX;//像素位置与坐标转换
posAppleY = appleY*Bsize+startY;
break;
}
}
isEated = false;//刚产生的苹果吃不到！
}向上走为例：
void goUp() { //五种情况①撞墙；②撞苹果；③撞自己；④都不撞；⑤撞障碍物
direction = s_up;
if (!((headX == appleX) && (headY - 1 == appleY)) && (headY - 1 >= 0) && (Smap[headX][headY - 1] == 0)) {//都不撞（头插一点，尾删一点）
s.snakeBody.push_back(Point(headX, headY - 1));//头插一点
//Smap[headX][headY - 1] = 1;
std::vector<Point>::iterator it = s.snakeBody.begin();//找到第一个点（尾部）
Smap[(*it).x()][(*it).y()] = 0;
s.snakeBody.erase(it);//尾删一点
}
else if ((headX == appleX) && (headY - 1 == appleY)) {//撞苹果，吃到（头插一点，尾不删）
s.snakeBody.push_back(Point(headX, headY - 1));//头插一点
//Smap[headX][headY - 1] = 1;
isEated = true;
}else if(Smap[headX][headY - 1]==1){
crashed = true;
return;
}
else if (headY - 1 < 0) {//不是撞苹果->撞墙：GameOver
crashed = true;
return;
}
else{//撞自己
crashed = true;
return;
}
}运行效果图：
完整代码及图片音频下载地址：https://download.****.net/download/qq_35294564/10699690