Thread: Annoying SDL Problem

hi,

1 of sdl functions in "engine.cpp" spitting out error can't seem pinpoint. here's code.

engine.h

code:

#ifndef engine_h #define engine_h  #include "sdl/sdl.h" #include "sdl/sdl_image.h" #include "sdl/sdl_ttf.h" #include <iostream> #include <string> #include <vector> #include <map>  using namespace std;  class init {         private:                 int win_width, win_height, win_bpp; //used setting window                 string win_caption; //the text goes in window caption                 int win_time; //the time window stays open ( dev purposes )                 string file, handle; //the filename , image handle strings                 sdl_surface *nativeimage; // used loading image                 sdl_surface *optimizedimage; // used optimizing image                 string filename; // filename loadimage                 int xcoord, ycoord; // placesurface offsets                 sdl_surface *source;                 sdl_surface *destination; //for surface blitting          public:                 sdl_surface *screen; // needs used outside of function                 init();                 ~init();                 void load( int win_width, int win_height, int win_bpp, string win_caption, int win_time );                 sdl_surface *loadimage( string filename );                 void placesurface( int xcoord, int ycoord, sdl_surface *source, sdl_surface* destination );                 void quit(); };    #endif // engine_h

engine.cpp

#include "engine.h"

code:

/* constructor */ init::init() { 	int win_width = 640; 	int win_height = 480; 	int win_bpp = 32; 	string win_caption = "default caption"; 	int win_time = 3; 	sdl_surface *screen = null; 	string filename = " "; 	string handle = " "; 	sdl_surface *nativeimage = null; 	sdl_surface *optimizedimage = null; 	int xcoord = 0; 	int ycoord = 0; 	sdl_surface *source = null; 	sdl_surface *destination = null; }  /* destructor */ init::~init() {  }  /* class functions */  void init::load( int win_width, int win_height, int win_bpp, string win_caption, int win_time ) {  	/* initialize subsystems */ 	if( sdl_init( sdl_init_everything < 0 ) ) { 		cerr << "failed initialize subsystems: ", sdl_geterror(); 	}  	/* set screen */ 	screen = sdl_setvideomode( win_width, win_height, win_bpp, sdl_swsurface );  	/* make sure screen initialized */ 	if( screen == null ) { 		cerr << "failed load screen: ", sdl_geterror(); 	}  	/* set caption */ 	sdl_wm_setcaption( win_caption.c_str(), null ); 	  	/* convert win_time seconds milliseconds */ 	win_time *= 1000; 	 	/* wait win_time seconds */ 	sdl_delay( win_time );	  }  sdl_surface *loadimage( string filename ) { 	 		/* load image */  		sdl_surface *nativeimage = img_load( filename.c_str() );  		if( nativeimage != null ) { 			/* optimize image */ 			sdl_surface *optimizedimage = sdl_displayformat( nativeimage ); 		}	 		else { 			cerr << "error loading image: " << sdl_geterror() << endl; 		}  		return optimizedimage; }  void placesuface( int xcoord, int ycoord, sdl_surface *source, sdl_surface *destination ) { 	 	/* create rectangle */ 	sdl_rect surface; 	 	/* set */ 	surface.x = xcoord; 	surface.y = ycoord; 	 	/* blit surface screen */ 	sdl_blitsurface( source, null, destination, &surface); } 		 void init::quit() { 	/* quit program (more added here later */ 	sdl_quit(); }

code:

#include <iostream> #include "engine.h"  int main( int argc, char** args ) {          sdl_surface * image;          /* create class objects */         init main_init;          /* load object functions */         main_init.load( 640, 480, 32, "a test program", 3 );          image = main_init.loadimage( "image.png" );          main_init.placesurface( 0, 0, image, main_init.screen );          main_init.quit();          return 0; }

and last not least, error:

code:

g++ -o main main.cpp engine.cpp -lsdl -lsdl_image                                                                                        ~/programs/c++/syi-engine engine.cpp: in function ‘sdl_surface* loadimage(std::string)’: engine.cpp:68: error: ‘optimizedimage’ not declared in scope

it seems think haven't declared "optimized image," though did in header in constructor...right ? have been mulling on 30 + minutes without success.

.

-josh

hint: note word "scope".

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