因此,我创建了一个包含一些布尔型公共成员的类,但是,当我实际尝试使用默认构造函数(无参数)创建对象时,无法访问这些成员。但是,如果我使用参数(无符号int)声明构造函数,则可以访问成员。有人知道为什么是这样吗?
以下是课程:
class MoveManagement {
private:
Player * currentPlayer;
sf::View* currentView;
int lambda_x = 0;
int lambda_y = 0;
public:
bool m_up;
bool m_down;
bool m_left;
bool m_right;
MoveManagement() {
m_up = false;
m_down = false;
m_left = false;
m_right = false;
}
void getNextView(Player* player_, sf::View* view_) {
currentPlayer = player_;
currentView = view_;
if (m_up) {
--lambda_y;
}
if (m_down) {
++lambda_y;
}
if (m_left) {
--lambda_x;
}
if (m_right) {
++lambda_x;
}
currentPlayer->playerCharacter->m_position.x = currentPlayer->playerCharacter->m_position.x + lambda_x;
currentPlayer->playerCharacter->m_position.y = currentPlayer->playerCharacter->m_position.y + lambda_y;
currentView->move(lambda_x, lambda_y);
lambda_x = 0;
lambda_y = 0;
}
};
我创建一个像这样的新对象:
MoveManagement move();
如果我尝试访问任何成员,都会收到一条错误消息,提示“表达式必须具有类类型”。
谢谢。
答案 0 :(得分:0)
MoveManagement move();
声明一个函数。请改用MoveManagement move;
。