c++ - 不能为数组指定显式初始值设定项

Question

我收到以下编译错误...

error C2536: 'Player::Player::indices' : cannot specify explicit initializer for arrays 

这是为什么？

标题

class Player
{
public:
    Player();
    ~Player();

    float x;
    float y;
    float z;
    float velocity;

    const unsigned short indices[ 6 ];
    const VertexPositionColor vertices[];
};

cpp

Player::Player()
:
    indices
    { 
        3, 1, 0,
        4, 2, 1 
    },
    vertices{
        { XMFLOAT3( -0.5f, -0.5f, -0.5f ), XMFLOAT3( 0.0f, 0.0f, 0.0f ) },
        { XMFLOAT3( -0.5f, 0.5f, -0.5f ), XMFLOAT3( 0.0f, 0.0f, 1.0f ) },
        { XMFLOAT3( 0.5f, -0.5f, -0.5f ), XMFLOAT3( 0.0f, 1.0f, 0.0f ) },
        { XMFLOAT3( 0.5f, 0.5f, -0.5f ), XMFLOAT3( 0.0f, 1.0f, 1.0f ) }
    }
{
}

编辑以显示我对 std::array 的尝试

std::array<unsigned short, 6> indices;
std::array<VertexPositionColor, 4>  vertices;

也不能让它工作。

error C2661: 'std::array<unsigned short,6>::array' : no overloaded function takes 6 arguments

如果我像其他帖子所说的那样在我的构造中这样做:

indices( { 
    3, 1, 0,
    4, 2, 1 
} ),
vertices ( {
    { XMFLOAT3( -0.5f, -0.5f, -0.5f ), XMFLOAT3( 0.0f, 0.0f, 0.0f ) },
    { XMFLOAT3( -0.5f, 0.5f, -0.5f ), XMFLOAT3( 0.0f, 0.0f, 1.0f ) },
    { XMFLOAT3( 0.5f, -0.5f, -0.5f ), XMFLOAT3( 0.0f, 1.0f, 0.0f ) },
    { XMFLOAT3( 0.5f, 0.5f, -0.5f ), XMFLOAT3( 0.0f, 1.0f, 1.0f ) }
} )

它使编译器崩溃...

编辑::胜利!

我把它们放在我的 cpp 文件中 babeh:

const unsigned short Player::indices[ 6 ] = {
    3, 1, 0,
    4, 2, 1
};

const VertexPositionColor Player::vertices[ 4 ] = {
    { XMFLOAT3( -0.5f, -0.5f, -0.5f ), XMFLOAT3( 0.0f, 0.0f, 0.0f ) },
    { XMFLOAT3( -0.5f, 0.5f, -0.5f ), XMFLOAT3( 0.0f, 0.0f, 1.0f ) },
    { XMFLOAT3( 0.5f, -0.5f, -0.5f ), XMFLOAT3( 0.0f, 1.0f, 0.0f ) },
    { XMFLOAT3( 0.5f, 0.5f, -0.5f ), XMFLOAT3( 0.0f, 1.0f, 1.0f ) }
}

Answer 1

正如其他人所说，将我的类的属性设置为静态常量，然后在类的 cpp 文件中定义它们:

头文件:

class Player
{
public:
    Player();
    ~Player();

    float x;
    float y;
    float z;
    float velocity;

    static const unsigned short indices[ 6 ];
    static const VertexPositionColor vertices[ 4 ];
};

cpp:

const unsigned short Player::indices[ 6 ] = {
    3, 1, 0,
    4, 2, 1
};

const VertexPositionColor Player::vertices[ 4 ] = {
    { XMFLOAT3( -0.5f, -0.5f, -0.5f ), XMFLOAT3( 0.0f, 0.0f, 0.0f ) },
    { XMFLOAT3( -0.5f, 0.5f, -0.5f ), XMFLOAT3( 0.0f, 0.0f, 1.0f ) },
    { XMFLOAT3( 0.5f, -0.5f, -0.5f ), XMFLOAT3( 0.0f, 1.0f, 0.0f ) },
    { XMFLOAT3( 0.5f, 0.5f, -0.5f ), XMFLOAT3( 0.0f, 1.0f, 1.0f ) }
}