For my videogame in C - SDL I need to use a spritesheet I made myself. The picture size is 100x100 and each picture I want to take is 25x25

我发现,在什么地方可以做些事情:

// Wraps a rectangle around every sprite in a sprite sheet and stores it in an array of     rectangles(Clip[])

void spriteSheet(){

int SpriteWidth = 25; int SpriteHeight= 25; int SheetDimension = 4;
int LeSprites = SheetDimension * SheetDimension;// Number of Sprites on sheet
SDL_Rect Clip[LeSprites]; // Rectangles that will wrap around each sprite

int SpriteXNum = 0;// The number sprite going from left to right
int SpriteYNum = 0;// The number sprite going from top to bottom
int YIncrement = 0;// Increment for each row.
int i = 0;
for(i = 0; i< LeSprites; i++){// While i is less than number of sprites

    if(i = 0){// First sprite starts at 0,0
        Clip[i].x = 0;
        Clip[i].y = 0;
        Clip[i].w = SpriteWidth;
        Clip[i].h = SpriteHeight;
    }
    else{

        if(SpriteXNum < SheetDimension - 1 ){// If we have reached the end of the row, go back to the front of the next row
            SpriteXNum = 0;
        }
        if(YIncrement < SheetDimension - 1){
            SpriteYNum += 1;                         // Example of 4X4 Sheet
        }                                            //   ________________
        Clip[i].x = SpriteWidth * SpriteXNum;        //  | 0 | 1 | 2 | 3 |
        Clip[i].y = SpriteHeight * SpriteYNum;       //  |===============|
                                                     //  | 0 | 1 | 2 | 3 |
                                                     //  |===============|
        Clip[i].w = SpriteWidth;                     //  | 0 | 1 | 2 | 3 |
        Clip[i].h = SpriteHeight;                    //  |===============|
                                                     //  | 0 | 1 | 2 | 3 |
    }                                                //  |---------------|
    SpriteXNum++;
    YIncrement++;
}

}

但现在我知道,我怎么能够把我的(平方)画上来运用这一职能。