我试图将 Singleton 设计模式合并到我的代码中,但我开始收到一个奇怪的错误:
main.obj : error LNK2005: "private: static class gameState * gameState::state" (?state@gameState@@0PAV1@A) already defined in gameState.obj
如果您不熟悉单例模式,它基本上用于在整个程序中强制执行某个对象的 1 个实例。以下是相关代码:gameState.h:
class gameState
{
public:
static gameState* Instance() {return state;}
.
.
.
private:
gameState();
static gameState* state;
};
gameState* gameState::state = new gameState();
现在我只是在 main.cpp 文件中使用该对象的实例:
gameState *currState = gameState::Instance();
.
.
.
for_each(currState->getHumanPieces().begin(),currState->getHumanPieces().end(), drawPieces);
似乎我正在尝试重新定义 gameState::state,但无法弄清楚为什么......帮助任何人?
这解决了这个问题,但仍然存在一个错误,我之前实际上并没有发布,因为我认为它只是另一个错误的一部分:
error LNK2019: unresolved external symbol "private: __thiscall gameState::gameState(void)" (??0gameState@@AAE@XZ) referenced in function "void __cdecl `dynamic initializer for 'private: static class gameState * gameState::state''(void)" (??__E?state@gameState@@0PAV1@A@@YAXXZ)
关于如何解决这个问题的任何好的提示?
谢谢你们俩,它已修复:D