118 lines
2.2 KiB
C++
118 lines
2.2 KiB
C++
/*This source code copyrighted by Lazy Foo' Productions (2004-2015)
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and may not be redistributed without written permission.*/
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//Using SDL and standard IO
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#include <SDL2/SDL.h>
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#include <stdio.h>
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//Screen dimensions
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const int SCREEN_WIDTH = 640;
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const int SCREEN_HEIGHT = 480;
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//Starts up SDL and creates window
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bool init();
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//Loads media
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bool loadMedia();
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//Frees media and shuts down SDL
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void close();
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//The window we'll be rendering to
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SDL_Window* gWindow = NULL;
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//The surface contained by the window
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SDL_Surface* gScreenSurface = NULL;
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//The image we will load and show on the screen
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SDL_Surface* gHelloWorld = NULL;
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bool init(){
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//Initialization flag
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bool success = true;
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//Initialize SDL
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if( SDL_Init( SDL_INIT_VIDEO ) < 0 )
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{
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printf("SDL could not init! SDL_Error: %s\n", SDL_GetError() );
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success = false;
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}
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else
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{
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//Create window
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gWindow = SDL_CreateWindow( "SDL Tutorial", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, SCREEN_WIDTH, SCREEN_HEIGHT, SDL_WINDOW_SHOWN );
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if( gWindow == NULL )
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{
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printf( "Window could not be created! SDL_Error: %s\n", SDL_GetError() );
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success = false;
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}
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else
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{
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//Get window surface
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gScreenSurface = SDL_GetWindowSurface( gWindow );
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}
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}
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return success;
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}
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bool loadMedia()
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{
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//Loading success flag
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bool success = true;
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//Load splash image
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gHelloWorld = SDL_LoadBMP( "images/hello_world.bmp" );
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if( gHelloWorld == NULL )
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{
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printf( "Unable to load image %s! SDL Error: %s\n", "images/hello_world.bmp", SDL_GetError() );
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}
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return success;
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}
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void close()
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{
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//Deallocate surface
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SDL_FreeSurface( gHelloWorld );
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gHelloWorld = NULL;
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//Destroy window
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SDL_DestroyWindow( gWindow );
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gWindow = NULL;
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//Quit SDL subsystems
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SDL_Quit();
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}
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int main( int argc, char* args[] )
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{
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//Start up SDL and create window
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if( !init() )
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{
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printf( "Failed to init!\n" );
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}
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else
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{
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//Load media
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if( !loadMedia() )
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{
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printf( "Failed to load media!\n");
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}
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else
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{
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//Apply the image
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SDL_BlitSurface( gHelloWorld, NULL, gScreenSurface, NULL );
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//Update the surface
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SDL_UpdateWindowSurface( gWindow );
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//Wait two seconds
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SDL_Delay( 2000 );
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}
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}
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//Free resources and close SDL
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close();
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return 0;
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}
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