Objective c cocos2d老虎机动画

我正在尝试创建一个模拟老虎机的应用程序

现在，我已经准备好了所有的图像，包括垂直png文件和plist文件。我的问题是，如何模拟旋转（当用户按下按钮时），然后停止老虎机（大约1-2秒后）

请注意，png文件必须以某种方式环绕

其他一切都是一个NSArrays和检查的问题，我想弄清楚的是动画。我希望一些人可以分享一些代码或参考来做到这一点

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谢谢

这相对简单：只需重复png文件多次即可模拟旋转动作。所以它基本上是视差滚动的垂直变化。如果你有Steffan Itterheim的书，他在第7章“快乐滚动”中谈到了这类事情。您也可以在这里找到一些帮助：

希望这有帮助

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迈克

我正在做这样的事情：

#include <ctime>
#include <vector>
#include <cstdlib>
#include <iostream>

#include <SDL2/SDL.h>
#include <SDL2/SDL_image.h>

using namespace std;

static int last[5]={0, 0, 0, 0, 0};
static int stops[5];

static int reels[5][63] = {
    {9,7,12,5,7,3,4,11,9,7,12,6,7,4,11,10,4,3,11,12,7,5,10,9,7,5,9,10,8,9,7,4,9,10,11,5,10,3,9,10,3,9,4,8,7,5,11,9,12,6,3,5,7,9,11,10,6,7,3,5,10,8,4,},
    {11,5,4,7,6,8,4,9,7,8,3,11,6,5,11,7,12,5,8,6,10,9,5,6,8,7,12,11,5,6,10,3,4,5,9,12,8,9,6,5,12,8,9,12,7,8,5,10,12,7,11,3,4,8,7,4,5,9,8,6,12,4,6,},
    {10,4,5,8,6,7,5,9,6,7,8,4,6,5,11,3,9,8,7,11,12,6,8,5,4,8,6,12,9,6,5,11,3,7,4,8,7,3,10,9,5,6,4,3,9,12,10,8,9,6,3,9,10,6,7,5,6,8,4,11,9,7,8,},
    {9,3,6,5,3,10,6,9,5,12,4,8,11,10,7,6,5,9,7,3,8,6,12,4,5,7,3,12,10,6,9,7,8,5,6,4,9,6,11,5,8,12,6,7,3,6,10,3,7,5,10,8,9,6,12,4,7,9,5,6,8,3,10,},
    {5,3,9,4,6,12,10,5,11,4,8,7,10,5,9,11,4,6,7,3,6,4,8,5,11,8,5,10,8,11,5,10,8,3,7,4,10,11,5,7,8,9,5,11,6,8,10,3,7,9,3,8,10,12,6,8,10,11,7,10,8,11,6,},
};

static SDL_Window *window = NULL;
static SDL_Surface *canvas = NULL;
static const SDL_Surface *backgroundSurface = IMG_Load("./Background.png");
static SDL_Rect backgroundCoordinates = { 0, 0, 0, 0 };
static const SDL_Surface *symbolsSurface[] = {
    NULL,
    NULL,
    NULL,
    IMG_Load("./Symbol03.png"),
    IMG_Load("./Symbol04.png"),
    IMG_Load("./Symbol05.png"),
    IMG_Load("./Symbol06.png"),
    IMG_Load("./Symbol07.png"),
    IMG_Load("./Symbol08.png"),
    IMG_Load("./Symbol09.png"),
    IMG_Load("./Symbol10.png"),
    IMG_Load("./Symbol11.png"),
    IMG_Load("./Symbol12.png"),
    NULL,
    NULL,
    NULL,
    NULL,
};
static const SDL_Surface *reelsSurface[5] = {NULL, NULL, NULL, NULL, NULL};

static SDL_Rect symbolsCoordinates[5][3] = {
    { { 298, 118, 0, 0 }, { 298, 266, 0, 0 }, { 298, 414, 0, 0 } },
    { { 474, 118, 0, 0 }, { 474, 266, 0, 0 }, { 474, 414, 0, 0 } },
    { { 651, 118, 0, 0 }, { 651, 266, 0, 0 }, { 651, 414, 0, 0 } },
    { { 827, 118, 0, 0 }, { 827, 266, 0, 0 }, { 827, 414, 0, 0 } },
    { { 1003, 118,  0, 0 }, { 1003, 266, 0, 0 }, {1003, 414, 0, 0 } },
};

static unsigned long animationStart = 0;
static unsigned long animationEnd = 0;
static bool stopped[5] = {false, false, false, false, false};
void draw() {
    static double y0 = 0;
    static double v0[5] = {-9.5, -9.6, -9.7, -9.8, -9.9};
    static long t = 0;
    static double a = 0.0005;
    static int y = 0;

    SDL_BlitSurface((SDL_Surface*) backgroundSurface, NULL, canvas, &backgroundCoordinates);

    for (int i = 0; i < 5 && animationStart!=animationEnd; i++) {
        /*
         * y = y0 + v0*t + 1/2*at^2
         */
        y0 = last[i] * 140;
        t = (1000 * clock() / CLOCKS_PER_SEC) - animationStart;

        y = (int)(y0 + v0[i]*t + a*t*t/2) % (63*140);
        if(y < 0) {
            y += 63*140;
        }

        /*
         * Stop near to the target position.
         */
        if(i==0 && abs(y-stops[i]*140)<=140) {
            last[i] = stops[i];
            stopped[i] = true;
        }else if(stopped[i-1] == true && stopped[i] == false && abs(y-stops[i]*140)<=140) {
            last[i] = stops[i];
            stopped[i] = true;
        }

        if(stopped[i] == true) {
            SDL_SetSurfaceAlphaMod((SDL_Surface*) reelsSurface[i], 255);
            y = stops[i] * 140;
        } else {
            SDL_SetSurfaceAlphaMod((SDL_Surface*) reelsSurface[i], 191);
        }

        const SDL_Rect frame = {0, y, 140, 3*140};
        SDL_BlitSurface((SDL_Surface*) reelsSurface[i], &frame, canvas, &symbolsCoordinates[i][0]);
    }

    SDL_UpdateWindowSurface(window);
}

int main() {
    SDL_Init(SDL_INIT_EVERYTHING);


    /*
     * Build long strips (two more images at the end).
     */
    for(int i=0, index; i<5; i++) {
        reelsSurface[i] = IMG_Load("./Reel.png");

        for(int j=0; j<(63+2); j++) {
            index = reels[i][j%63];

            SDL_Rect coordinates = {0, 140*j, 0, 0};
            SDL_BlitSurface((SDL_Surface*) symbolsSurface[index], NULL, (SDL_Surface*)reelsSurface[i], &coordinates);
        }
    }

    //window = SDL_CreateWindow("Slot Reels Animation", 0, 0, 1280, 1024, SDL_WINDOW_FULLSCREEN_DESKTOP);
    window = SDL_CreateWindow("Slot Reels Animation", 0, 0, 1440, 900, 0);
    canvas = SDL_GetWindowSurface(window);

    SDL_Event event;
    bool done = false;
    while (done == false) {
        while (SDL_PollEvent(&event)) {
            switch (event.type) {
            case SDL_QUIT:
                done = true;
                break;

            case SDL_KEYDOWN:
                switch (event.key.keysym.sym) {

                case SDLK_ESCAPE:
                    done = true;
                    break;

                case SDLK_RETURN:
                    //startAnimation();
                    memset(stopped, false, 5*sizeof(bool));
                     animationStart = 1000 * clock() / CLOCKS_PER_SEC;

                    for (int i = 0, r; i < 5; i++) {
                        stops[i] = rand() % 63;
                    }
                    break;
                }
            }
        }

        draw();
    }


    SDL_DestroyWindow(window);

    for(int i=0; i<5; i++) {
        SDL_FreeSurface((SDL_Surface*)reelsSurface[i]);
    }

    SDL_Quit();

    return EXIT_SUCCESS;
}

#包括
#包括
#包括
#包括
#包括
#包括
使用名称空间std；
静态int last[5]={0,0,0,0,0}；
静态int停止[5]；
静态整数卷[5][63]={
{9,7,12,5,7,3,4,11,9,7,12,6,7,4,11,10,4,3,11,12,7,5,10,9,7,5,9,10,8,9,7,4,9,10,11,5,10,3,9,10,3,9,4,8,7,5,11,9,12,6,3,5,7,9,11,10,6,7,3,5,10,8,4,},
{11,5,4,7,6,8,4,9,7,8,3,11,6,5,11,7,12,5,8,6,10,9,5,6,8,7,12,11,5,6,10,3,4,5,9,12,8,9,6,5,12,8,9,12,7,8,5,10,12,7,11,3,4,8,7,4,5,9,8,6,12,4,6,},
{10,4,5,8,6,7,5,9,6,7,8,4,6,5,11,3,9,8,7,11,12,6,8,5,4,8,6,12,9,6,5,11,3,7,4,8,7,3,10,9,5,6,4,3,9,12,10,8,9,6,3,9,10,6,7,5,6,8,4,11,9,7,8,},
{9,3,6,5,3,10,6,9,5,12,4,8,11,10,7,6,5,9,7,3,8,6,12,4,5,7,3,12,10,6,9,7,8,5,6,4,9,6,11,5,8,12,6,7,3,6,10,3,7,5,10,8,9,6,12,4,7,9,5,6,8,3,10,},
{5,3,9,4,6,12,10,5,11,4,8,7,10,5,9,11,4,6,7,3,6,4,8,5,11,8,5,10,8,11,5,10,8,3,7,4,10,11,5,7,8,9,5,11,6,8,10,3,7,9,3,8,10,12,6,8,10,11,7,10,8,11,6,},
};
静态SDL_窗口*窗口=NULL；
静态SDL_表面*canvas=NULL；
静态常数SDL_Surface*backgroundSurface=IMG_Load（“./Background.png”）；
静态SDL_Rect背景坐标={0,0,0,0}；
静态常数SDL_表面*符号表面[]={
无效的
无效的
无效的
IMG_荷载（“./Symbol03.png”），
IMG_荷载（“./Symbol04.png”），
IMG_荷载（“./Symbol05.png”），
IMG_荷载（“./Symbol06.png”），
IMG_荷载（“./Symbol07.png”），
IMG_荷载（“./Symbol08.png”），
IMG_荷载（“./Symbol09.png”），
IMG_载荷（“./Symbol10.png”），
IMG_荷载（“./Symbol11.png”），
IMG_荷载（“./Symbol12.png”），
无效的
无效的
无效的
无效的
};
静态常量SDL_Surface*reelsSurface[5]={NULL，NULL，NULL，NULL，NULL}；
静态SDL矩形符号坐标[5][3]={
{ { 298, 118, 0, 0 }, { 298, 266, 0, 0 }, { 298, 414, 0, 0 } },
{ { 474, 118, 0, 0 }, { 474, 266, 0, 0 }, { 474, 414, 0, 0 } },
{ { 651, 118, 0, 0 }, { 651, 266, 0, 0 }, { 651, 414, 0, 0 } },
{ { 827, 118, 0, 0 }, { 827, 266, 0, 0 }, { 827, 414, 0, 0 } },
{ { 1003, 118,  0, 0 }, { 1003, 266, 0, 0 }, {1003, 414, 0, 0 } },
};
静态无符号长动画开始=0；
静态无符号长动画结束=0；
静态布尔停止[5]={false，false，false，false，false}；
作废提款（）{
静态双y0=0；
静态双v0[5]={-9.5，-9.6，-9.7，-9.8，-9.9}；
静态长t=0；
静态双a=0.0005；
静态int y=0；
SDL_BlitSurface（（SDL_Surface*）背景面、空值、画布和背景坐标）；
对于（int i=0；i<5&&animationStart！=animationEnd；i++）{
/*
*y=y0+v0*t+1/2*at^2
*/
y0=最后一个[i]*140；
t=（1000*clock（）/CLOCKS_/秒）-animationStart；
y=（int）（y0+v0[i]*t+a*t*t/2）%（63*140）；
if（y<0）{
y+=63*140；
}
/*
*停在目标位置附近。
*/
如果（i==0&&abs（y-stops[i]*140），我已经在cocos2d论坛上请求了一些帮助，但还没有得到回答：我已经把图像运行了，但是当它离开我想要的区域/屏幕时，我如何使它返回？