C++/DX11从.h移动到.cpp会导致错误

我正在开发一些directX，从教程代码开始，并逐渐将其转换为自己的类系统和cpp文件等。

到目前为止一切都很顺利，但我刚刚开始修改"Camera.h"answers"Camera.cpp"。我在头中有类函数，当我把它放在它的类文件中时，它会出现一个错误。我有一些盖帽等等，但我看不出有什么缺陷。

编辑前的camera.h

https://i.stack.imgur.com/Evxof.png

编辑后的camera.h

#ifndef CAMERA_H_
#define CAMERA_H_
#include "Player.h"
#include "RandomVariables.h"

class Camera {
    public:
        void    UpdateCamera();
        float   camPitch;
        float   camYaw;
        float   Zoom_Amount; //zoom amount from Model_1.Player
        float   charCamDist; //distance from Model_1.Player
        XMVECTOR camPosition;
        XMVECTOR camTarget;
        XMVECTOR camUp;
        XMVECTOR camRight;
        XMVECTOR camForward;
        XMMATRIX camRotationMatrix;
        XMMATRIX Rotationx;
        XMMATRIX Rotationy;
        XMMATRIX Rotationz;
        XMMATRIX camView;
        XMMATRIX camProjection;
};
Camera MainCamera;
#endif

我删除了void Camera:：UpdateCamera（）并将其放在Camera.cpp中，它会出现未定义的错误等等，如果void Camera:（）在头文件中，则不会发生这些错误，所以我很困惑：S

错误列表

https://i.stack.imgur.com/7G21V.png

Camera.cpp移动更新相机后

#include "Camera.h"
void Camera::UpdateCamera(){
    MainCamera.charCamDist = 135.0f;
    MainCamera.camTarget = mainPlayer.playerPos;
    MainCamera.camTarget = XMVectorSetY(MainCamera.camTarget, XMVectorGetY(MainCamera.camTarget)+5.0f); 
    MainCamera.camTarget = XMVectorSetX(MainCamera.camTarget, XMVectorGetX(MainCamera.camTarget) -MainCamera.Zoom_Amount);

    MainCamera.camRotationMatrix = XMMatrixRotationRollPitchYaw(-MainCamera.camPitch, MainCamera.camYaw, 0);
    MainCamera.camPosition = XMVector3TransformNormal(DefaultForward, MainCamera.camRotationMatrix );
    MainCamera.camPosition = XMVector3Normalize(MainCamera.camPosition);
    MainCamera.camPosition = (MainCamera.camPosition * MainCamera.charCamDist) + MainCamera.camTarget;
    MainCamera.camForward = XMVector3Normalize(MainCamera.camTarget - MainCamera.camPosition);  // Get forward vector based on target
    MainCamera.camForward = XMVectorSetY(MainCamera.camForward, 0.0f);  // set forwards y component to 0 so it lays only on
    // the xz plane
    MainCamera.camForward = XMVector3Normalize(MainCamera.camForward);
    MainCamera.camRight = XMVectorSet(-XMVectorGetZ(MainCamera.camForward), 0.0f, XMVectorGetX(MainCamera.camForward), 0.0f);
    MainCamera.camUp =XMVector3Normalize(XMVector3Cross(XMVector3Normalize(MainCamera.camPosition - MainCamera.camTarget), MainCamera.camRight));
    MainCamera.camView = XMMatrixLookAtLH( MainCamera.camPosition, MainCamera.camTarget, MainCamera.camUp );

};

随机变量.cpp

//Global Declarations - Interfaces//
#ifndef RAND_H
#define RAND_H
#include "Models.h"
#include "Player.h"
#include "Camera.h"
///start
My_Player   mainPlayer;
XMMATRIX WVP;
XMVECTOR DefaultForward = XMVectorSet(0.0f,0.0f,1.0f, 0.0f);
XMVECTOR DefaultRight = XMVectorSet(1.0f,0.0f,0.0f, 0.0f);
float tilt_X = 0.0f;
int NumSphereVertices;
int NumSphereFaces;
XMMATRIX sphereWorld;

XMMATRIX Scale;
XMMATRIX Translation;
///end

IDXGISwapChain* SwapChain;
ID3D11Device* d3d11Device;
ID3D11DeviceContext* d3d11DevCon;
ID3D11RenderTargetView* renderTargetView;
ID3D11DepthStencilView* depthStencilView;
ID3D11Texture2D* depthStencilBuffer;
ID3D11VertexShader* VS;
ID3D11PixelShader* PS;
ID3D11PixelShader* D2D_PS;
ID3D10Blob* D2D_PS_Buffer;
ID3D10Blob* VS_Buffer;
ID3D10Blob* PS_Buffer;
ID3D11InputLayout* vertLayout;
ID3D11Buffer* cbPerObjectBuffer;
ID3D11BlendState* d2dTransparency;
ID3D11RasterizerState* CCWcullMode;
ID3D11RasterizerState* CWcullMode;
ID3D11SamplerState* CubesTexSamplerState;
ID3D11Buffer* cbPerFrameBuffer;
ID3D10Device1 *d3d101Device;    
IDXGIKeyedMutex *keyedMutex11;
IDXGIKeyedMutex *keyedMutex10;  
ID2D1RenderTarget *D2DRenderTarget; 
ID2D1SolidColorBrush *Brush;
ID3D11Texture2D *BackBuffer11;
ID3D11Texture2D *sharedTex11;   
ID3D11Buffer *d2dVertBuffer;
ID3D11Buffer *d2dIndexBuffer;
ID3D11ShaderResourceView *d2dTexture;
IDWriteFactory *DWriteFactory;
IDWriteTextFormat *TextFormat;
IDirectInputDevice8* DIKeyboard;
IDirectInputDevice8* DIMouse;
ID3D11Buffer* sphereIndexBuffer;
ID3D11Buffer* sphereVertBuffer;
ID3D11VertexShader* SKYMAP_VS;
ID3D11PixelShader* SKYMAP_PS;
ID3D10Blob* SKYMAP_VS_Buffer;
ID3D10Blob* SKYMAP_PS_Buffer;
ID3D11ShaderResourceView* smrv;
ID3D11DepthStencilState* DSLessEqual;
ID3D11RasterizerState* RSCullNone;
ID3D11BlendState* Transparency;
#endif