如何使SDL_image在可在Ubuntu上运行的Code :: Blocks上运行？

问题描述

摘要：

我一直在到处寻找答案，但是找不到。也许有人可以帮忙。基本上，我是在YouTube上使用sdl2进行游戏开发的系列教程，现在我需要添加和下载sdl_image库。链接sdl时没有问题，但是尝试链接sdl_image时遇到了大问题。所有的教程都在Windows上。我迫切需要一个解决方案。

我尝试过的事情：

添加-lSDL2_image到链接设置，将SDL_image.h添加到SDL2文件夹，并将其包含在我的cpp文件中。我尝试将文件路径添加到代码块上的SDL2_image-2.0.5文件夹中，并且没有骰子。我尝试在文件目录中使用./configure和sudo make install，并将其发送.o和.so文件到/ usr / include / lib，然后尝试将搜索目录/ usr / include / lib添加到出现细分错误。

代码：

/*This source code copyrighted by Lazy Foo' Productions (2004-2020)
and may not be redistributed without written permission.*/

//Using SDL,SDL_image,standard IO,and strings
#include <SDL2/SDL.h>
#include <SDL_image.h>
#include <stdio.h>
#include <string>

//Screen dimension constants
const int SCREEN_WIDTH = 640;
const int SCREEN_HEIGHT = 480;

//Starts up SDL and creates window
bool init();

//Loads media
bool loadMedia();

//Frees media and shuts down SDL
void close();

//Loads individual image
SDL_Surface* loadSurface( std::string path );

//The window we'll be rendering to
SDL_Window* gWindow = NULL;

//The surface contained by the window
SDL_Surface* gScreenSurface = NULL;

//Current displayed PNG image
SDL_Surface* gPNGSurface = NULL;

bool init()
{
    //Initialization flag
    bool success = true;

    //Initialize SDL
    if( SDL_Init( SDL_INIT_VIDEO ) < 0 )
    {
        printf( "SDL could not initialize! SDL Error: %s\n",SDL_GetError() );
        success = false;
    }
    else
    {
        //Create window
        gWindow = SDL_CreateWindow( "SDL Tutorial",SDL_WINDOWPOS_UNDEFINED,SCREEN_WIDTH,SCREEN_HEIGHT,SDL_WINDOW_SHOWN );
        if( gWindow == NULL )
        {
            printf( "Window could not be created! SDL Error: %s\n",SDL_GetError() );
            success = false;
        }
        else
        {
            //Initialize PNG loading
            int imgFlags = IMG_INIT_PNG;
            if( !( IMG_Init( imgFlags ) & imgFlags ) )
            {
                printf( "SDL_image could not initialize! SDL_image Error: %s\n",IMG_GetError() );
                success = false;
            }
            else
            {
                //Get window surface
                gScreenSurface = SDL_GetWindowSurface( gWindow );
            }
        }
    }

    return success;
}

bool loadMedia()
{
    //Loading success flag
    bool success = true;

    //Load PNG surface
    gPNGSurface = loadSurface( "/home/zues/Desktop/Entities/Space.png" );
    if( gPNGSurface == NULL )
    {
        printf( "Failed to load PNG image!\n" );
        success = false;
    }

    return success;
}

void close()
{
    //Free loaded image
    SDL_FreeSurface( gPNGSurface );
    gPNGSurface = NULL;

    //Destroy window
    SDL_DestroyWindow( gWindow );
    gWindow = NULL;

    //Quit SDL subsystems
    IMG_Quit();
    SDL_Quit();
}

SDL_Surface* loadSurface( std::string path )
{
    //The final optimized image
    SDL_Surface* optimizedSurface = NULL;

    //Load image at specified path
    SDL_Surface* loadedSurface = IMG_Load( path.c_str() );
    if( loadedSurface == NULL )
    {
        printf( "Unable to load image %s! SDL_image Error: %s\n",path.c_str(),IMG_GetError() );
    }
    else
    {
        //Convert surface to screen format
        optimizedSurface = SDL_ConvertSurface( loadedSurface,gScreenSurface->format,0 );
        if( optimizedSurface == NULL )
        {
            printf( "Unable to optimize image %s! SDL Error: %s\n",SDL_GetError() );
        }

        //Get rid of old loaded surface
        SDL_FreeSurface( loadedSurface );
    }

    return optimizedSurface;
}

int main( int argc,char* args[] )
{
    //Start up SDL and create window
    if( !init() )
    {
        printf( "Failed to initialize!\n" );
    }
    else
    {
        //Load media
        if( !loadMedia() )
        {
            printf( "Failed to load media!\n" );
        }
        else
        {
            //Main loop flag
            bool quit = false;

            //Event handler
            SDL_Event e;

            //While application is running
            while( !quit )
            {
                //Handle events on queue
                while( SDL_PollEvent( &e ) != 0 )
                {
                    //User requests quit
                    if( e.type == SDL_QUIT )
                    {
                        quit = true;
                    }
                }

                //Apply the PNG image
                SDL_BlitSurface( gPNGSurface,NULL,gScreenSurface,NULL );

                //Update the surface
                SDL_UpdateWindowSurface( gWindow );
            }
        }
    }

    //Free resources and close SDL
    close();

    return 0;
}

最后我想问一下...我在浪费时间学习sdl2吗？我应该学习其他东西吗？最终目标是发布成功的游戏并建立一个英俊的社区。很难找到2020年的资源...尤其是在游戏变得如此庞大和先进之后，例如《堡垒之夜》，《鳕鱼战区》，《光环无限》 ...我可以列出数百种。

预先感谢：）

解决方法

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