我正在尝试比较两个对象,但一直出现错误:
<块引用>binary '==': 'robot' 未定义此运算符或转换为预定义运算符可接受的类型
这是我的 cpp 文件:
void move(const robot r, vector<robot>& vec_r) {
// 0 = north, 1 = east, 2 = south, 3 = west
int x = r.xpos();
int y = r.ypos();
// move the robot depending on which direction it's facing
if (direction == 0) { ++y; }
else if (direction == 1) { ++x; }
else if (direction == 2) { --y; }
else if (direction == 3) { --x; }
// check if space is occupied and also if in enemy team, delete the robot
for (auto &p : vec_r) {
if (x == p.xpos() && y == p.ypos() /* && r.teamNo() == p.teamNo() */ ) {
find(vec_r.begin(), vec_r.end(), [&]() {
return robot(r.id(), r.teamNo(), x, y) == robot(p.id(), p.teamNo(), p.xpos(), p.ypos());
});
}
}
cout << r.id() << ' ' << r.teamNo() << ' ' << x << ' ' << y << ' ' << "\n";
}
这是我的头文件:
#ifndef ROBOT_H
#define ROBOT_H
#include <vector>
#include <string>
class robot {
int _id;
int _teamNo;
int _xpos;
int _ypos;
public:
robot(const int &id, int teamNo, int xpos, int ypos) :
_id(id), _teamNo(teamNo), _xpos(xpos), _ypos(ypos) {}
// Accessor functions for robot details
int id() const { return _id; }
int teamNo() const { return _teamNo; }
int xpos() const { return _xpos; }
int ypos() const { return _ypos; }
int getDirection() { return direction; };
int Compare(const robot& r) const;
bool operator == (const robot& r) const {
return 0 == Compare(r);
}
private:
int direction = 0;
};
#endif
答案 0 :(得分:1)
对于您自己的类类型,您可以为其定义运算符,其中 operator==
是其中之一。
class robot {
// ... all your other stuff
public:
bool operator==(const robot& other) const {
return _id == other._id; // Use whatever logic makes sense for you here
}
};