C++博客-青岛本地游戏开发

Hello World

断杆破枪头 — Thu, 03 Sep 2015 13:04:00 GMT

摘要: Hello World 阅读全文

断杆破枪头 2015-09-03 21:04 发表评论

TextureManager管理

断杆破枪头 — Sat, 13 Dec 2014 10:56:00 GMT

1 /*
2  * TextureManager.cpp
3  *
4  *  Created on: 2014年12月13日
5  *      Author: wgzll
6  */
7
8 #include "TextureManager.h"
9 #include
10 #include
11
12 TextureManager* TextureManager::s_pInstance = 0;
13
14 bool TextureManager::load(string fileName,string id,SDL_Renderer* pRenderer)
15 {
16     SDL_Surface* pTempSurface = IMG_Load(fileName.c_str());
17
18
19     if(pTempSurface == 0)
20     {
21         cout< 22         return false;
23     }
24
25     SDL_Texture* pTexture = SDL_CreateTextureFromSurface(pRenderer,pTempSurface);
26
27     SDL_FreeSurface(pTempSurface);
28
29     if(pTexture != 0)
30     {
31         m_textureMap[id] = pTexture;
32         return true;
33     }
34     return false;
35 }
36
37 void TextureManager::draw(string id, int x, int y, int width, int height, SDL_Renderer* pRenderer, SDL_RendererFlip flip)
38 {
39     SDL_Rect srcRect;
40     SDL_Rect destRect;
41
42     srcRect.x = 0;
43     srcRect.y = 0;
44     srcRect.w = destRect.w = width;
45     srcRect.h = destRect.h = height;
46     destRect.x = x;
47     destRect.y = y;
48
49     SDL_RenderCopyEx(pRenderer, m_textureMap[id], &srcRect, &destRect, 0, 0, flip);
50 }
51
52 void TextureManager::drawFrame(string id, int x, int y, int width, int height, int currentRow, int currentFrame, SDL_Renderer *pRenderer, double angle, int alpha, SDL_RendererFlip flip)
53 {
54     SDL_Rect srcRect;
55     SDL_Rect destRect;
56     srcRect.x = width * currentFrame;
57     srcRect.y = height * currentRow;
58     srcRect.w = destRect.w = width;
59     srcRect.h = destRect.h = height;
60     destRect.x = x;
61     destRect.y = y;
62
63     SDL_SetTextureAlphaMod(m_textureMap[id], alpha);
64     SDL_RenderCopyEx(pRenderer, m_textureMap[id], &srcRect, &destRect, angle, 0, flip);
65 }
66

断杆破枪头 2014-12-13 18:56 发表评论

SDL2精灵动画

断杆破枪头 — Sat, 13 Dec 2014 08:11:00 GMT

关于SDL2的贴图上篇已经介绍过了。哪怎么让他动起来呢。我们可以使用SDL_Image也可以使用SDL_LoadBMP来载入图片.

SDL_Surface* pTempSurface = SDL_LoadBMP("image/animate.bmp");
    //SDL_Surface* pTempSurface = IMG_Load("image/animate.png");
    //SDL_Surface* pTempSurface = IMG_Load("image/animate-alpha.png");

                SDL_SetRenderDrawColor(m_pRenderer,255,0,0,255);
                m_pTexture = SDL_CreateTextureFromSurface(m_pRenderer,pTempSurface);
                SDL_FreeSurface(pTempSurface);
                SDL_QueryTexture(m_pTexture,NULL,NULL,&m_sourceRectangle.w,&m_sourceRectangle.h);
                m_sourceRectangle.w=128;
                m_sourceRectangle.h=82;

void Game::update()
{
    m_sourceRectangle.x = 128 * int(((SDL_GetTicks()/100)%6));
}

截图如下:

如何做到图片翻转的呢

1 void Game::render()
2 {
3     SDL_RenderClear(m_pRenderer);
4     //SDL_RenderCopy(m_pRenderer,m_pTexture,&m_sourceRectangle,&m_destinationRectangle);
5     //SDL_RenderCopy(m_pRenderer,m_pTexture,NULL,NULL);
6     SDL_RenderCopyEx(m_pRenderer,m_pTexture,&m_sourceRectangle,&m_destinationRectangle,0,NULL,SDL_FLIP_HORIZONTAL);//此句起的作用
7     SDL_RenderPresent(m_pRenderer);
8 }

断杆破枪头 2014-12-13 16:11 发表评论

SDL2贴图初探1

断杆破枪头 — Sat, 13 Dec 2014 04:35:00 GMT

SDL2改动比较大，随便玩玩高手勿喷。此代码是官方wiki给出的。
地址:http://wiki.libsdl.org/SDL_CreateRenderer

#include "SDL.h"

int main(int argc, char *argv[]) {
    SDL_Window *win = NULL;
    SDL_Renderer *renderer = NULL;
    SDL_Texture *bitmapTex = NULL;
    SDL_Surface *bitmapSurface = NULL;
    int posX = 100, posY = 100, width = 320, height = 240;

    SDL_Init(SDL_INIT_VIDEO);

    win = SDL_CreateWindow("Hello World", posX, posY, width, height, 0);

    renderer = SDL_CreateRenderer(win, -1, SDL_RENDERER_ACCELERATED);

    bitmapSurface = SDL_LoadBMP("img/hello.bmp");
    bitmapTex = SDL_CreateTextureFromSurface(renderer, bitmapSurface);
    SDL_FreeSurface(bitmapSurface);

    while (1) {
        SDL_Event e;
        if (SDL_PollEvent(&e)) {
            if (e.type == SDL_QUIT) {
                break;
            }
        }

        SDL_RenderClear(renderer);
        SDL_RenderCopy(renderer, bitmapTex, NULL, NULL);
        SDL_RenderPresent(renderer);
    }

    SDL_DestroyTexture(bitmapTex);
    SDL_DestroyRenderer(renderer);
    SDL_DestroyWindow(win);

    SDL_Quit();

    return 0;
}

下面看看SDL Game Development给出的代码，我摘录了一小段

  if(m_pRenderer != 0)
            {
                cout<<"renderer creation success\n";
                SDL_SetRenderDrawColor(m_pRenderer,0,0,0,255);
                m_pTexture = SDL_CreateTextureFromSurface(m_pRenderer,pTempSurface);
                SDL_FreeSurface(pTempSurface);
                SDL_QueryTexture(m_pTexture,NULL,NULL,&m_sourceRectangle.w,&m_sourceRectangle.h);
                m_sourceRectangle.w=50;
                m_sourceRectangle.h=50;

                m_destinationRectangle.x=m_sourceRectangle.x=0;
                m_destinationRectangle.y=m_sourceRectangle.y=0;
                m_destinationRectangle.x=100;
                m_destinationRectangle.y=100;
                m_sourceRectangle.x=50;
                m_sourceRectangle.y=50;
                m_destinationRectangle.w=m_sourceRectangle.w;
                m_destinationRectangle.h=m_sourceRectangle.h;

            }

1 void Game::render()
2 {
3     SDL_RenderClear(m_pRenderer);
4     //SDL_RenderCopy(m_pRenderer,m_pTexture,&m_sourceRectangle,&m_destinationRectangle);
5     SDL_RenderCopy(m_pRenderer,m_pTexture,NULL,NULL);
6     SDL_RenderPresent(m_pRenderer);
7 }

截图如下:

断杆破枪头 2014-12-13 12:35 发表评论

Eclipse+sdl2.0环境配置

断杆破枪头 — Wed, 10 Dec 2014 12:47:00 GMT

好久没有写代码了，VS太大不想去费时下载，就下载了eclipse-cpp-luna-SR1-win32-x86_64,系统win7 64bit

Eclipse IDE for C/C++ Developers,

具体下载地址如下:
http://www.eclipse.org/downloads/下载所需要的版本
接下来就是MingW
下载地址
http://www.mingw.org/
语言环境搭建好了。
下载sdl,地址http://www.libsdl.org
注意版本

OK啦！！！

1 /*
2  * main.cpp
3  *
4  *  Created on: 2014年12月10日
5  *      Author: wgzll
6  */
7 #include
8 #include
9 using namespace std;
10
11 SDL_Window* g_pWindow = 0;
12 SDL_Renderer* g_pRenderer = 0;
13
14 int main(int argc,char *args[])
15 {
16     if(SDL_Init(SDL_INIT_EVERYTHING)>=0)
17     {
18         g_pWindow = SDL_CreateWindow("Chapter 1: Setting up SDL",
19                 SDL_WINDOWPOS_CENTERED,SDL_WINDOWPOS_CENTERED,
20                 640,480,
21                 SDL_WINDOW_SHOWN);
22         if(g_pWindow !=0)
23         {
24             cout<<"初始化成功"<25             g_pRenderer = SDL_CreateRenderer(g_pWindow,-1,0);
26         }
27     }
28     else
29     {
30         cout<<"初始化失败"<31         return 1;
32     }
33
34     SDL_SetRenderDrawColor(g_pRenderer,0,0,0,255);
35
36     SDL_RenderClear(g_pRenderer);
37
38     SDL_RenderPresent(g_pRenderer);
39
40     SDL_Delay(500);
41
42     SDL_Quit();
43
44     return 0;
45 }

#define SDL_INIT_EVERYTHING ( \
                SDL_INIT_TIMER | SDL_INIT_AUDIO | SDL_INIT_VIDEO | SDL_INIT_EVENTS | \
                SDL_INIT_JOYSTICK | SDL_INIT_HAPTIC | SDL_INIT_GAMECONTROLLER \
            )
Uint32 subsystem_init;
subsystem_init = SDL_WasInit(SDL_INIT_EVERYTHING);
if (subsystem_init & SDL_INIT_VIDEO)
    { printf("Video is initialized.\n");}
else
    { printf("Video is not initialized.\n");
}

if (SDL_WasInit(SDL_INIT_VIDEO) != 0)
    { printf("Video is initialized.\n");}
else
    { printf("Video is not initialized.\n");}

Uint32 subsystem_mask = SDL_INIT_VIDEO | SDL_INIT_AUDIO;
if (SDL_WasInit(subsystem_mask) == subsystem_mask)
    { printf("Video and Audio initialized.\n");}
else
    { printf("Video and Audio not initialized.\n");}

SDL_INIT_TIMER
timer subsystem
SDL_INIT_AUDIO
audio subsystem
SDL_INIT_VIDEO
video subsystem
SDL_INIT_JOYSTICK
joystick subsystem
SDL_INIT_HAPTIC
haptic (force feedback) subsystem
SDL_INIT_GAMECONTROLLER
controller subsystem
SDL_INIT_EVENTS
events subsystem
SDL_INIT_EVERYTHING
all of the above subsystems
SDL_INIT_NOPARACHUTE
compatibility; this flag is ignored

断杆破枪头 2014-12-10 20:47 发表评论