c++ - SDL_RenderCopy() 不适用于数组

Question

我在互联网和这里搜索过，只找到了 1 个很好的帖子 SDL_RenderCopy with an array of Rectangles 。 (据我所知)没有答案，但我的问题与那里相同。有什么办法可以做到这一点吗？

SDL_RenderCopy(renderer, texture, &rects[index], &sprPos);

这是调试的内容:

Error   1   error C2664: 'int SDL_RenderCopy(SDL_Renderer *,SDL_Texture *,const SDL_Rect *,const SDL_Rect *)' : cannot convert argument 3 from 'SDL_Rect **' to 'const SDL_Rect *'  c:\users\kushnirenko\documents\visual studio 2013\projects\sdl_project\sdl_project\main.cpp 96  1   SDL_Project

2   IntelliSense: argument of type "SDL_Rect **" is incompatible with parameter of type "const SDL_Rect *"  c:\Users\kushnirenko\Documents\Visual Studio 2013\Projects\SDL_Project\SDL_Project\main.cpp 96  37  SDL_Project

Answer 1

我解决了这个问题。有一种方法可以将数组设置为 SDL_RenderCopy。这是:

// Sprites atlas regions
    SDL_Rect left = { sprite * 32, 32, 32, 32 };
    SDL_Rect right = { sprite * 32, 64, 32, 32 };
    SDL_Rect up = { sprite * 32, 96, 32, 32 };
    SDL_Rect down = { sprite * 32, 0, 32, 32 };

    SDL_Rect leftIdle = { 32, 32, 32, 32 };
    SDL_Rect rightIdle = { 32, 64, 32, 32 };
    SDL_Rect upIdle = { 32, 96, 32, 32 };
    SDL_Rect downIdle = { 32, 0, 32, 32 };
    // End of sprite atlas

    sprPos = { x, y, 32, 32 };

    spritesCoords[0] = left;
    spritesCoords[1] = right;
    spritesCoords[2] = up;
    spritesCoords[3] = down;

    spritesCoords[4] = leftIdle;
    spritesCoords[5] = rightIdle;
    spritesCoords[6] = upIdle;
    spritesCoords[7] = downIdle;

    sprFrame = spritesCoords[spriteIndex]; // This is solutuion.

    SDL_RenderClear(renderer);
    SDL_RenderCopy(renderer, texture, &sprFrame, &sprPos);
    SDL_RenderPresent(renderer);