#include "SDL.h"
#include "SDL_mixer.h"
#include <string>
#include "SDL_image.h"
#include "SDL_ttf.h"
#include "game_time.h"

//window settings and functions
const int SCREEN_WIDTH= 640;
const int SCREEN_HEIGHT= 480;
const int SCREEN_BPP= 32;    
bool init();
bool clean_up();


//music variables
Mix_Music *music = NULL;

//frame rate time, variables
//The frames per second 
const int FRAMES_PER_SECOND = 20;
Timer fps;
bool cap = true;
int frame = 0;

//font colors and text type variables and functions
TTF_Font *font;
SDL_Color textColor = { 255, 55, 20 };// color of text

//surfaces that will be used
SDL_Surface *player1= NULL;
SDL_Surface *background= NULL;
SDL_Surface *screen= NULL;
SDL_Surface *message= NULL;
//event handler variables
SDL_Event event;

//Image Loading functions
SDL_Surface *load_image(std::string filename);

//Image optimization fuctions
void apply_surface(int x, int y, SDL_Surface * source, SDL_Surface* destination);


int main( int argc, char* args[] )
{
 //app startup check
 if(init()==false)
 {
     return 1;
 }           
 

 
   //loop control variable
   bool go_on=true;
   //screen images
   player1= load_image("adv2as2.bmp");
   background= load_image("bg1.bmp");
   
  
   
   //apply images to screen
   apply_surface(0,0,background,screen);
   apply_surface(180,140,player1,screen);
   
  
  
   
   //update sdl screen
   if(SDL_Flip(screen)==-1)
   {
                           return 1;
   }                        
   
 
   //loop
   while(go_on)
   {
         while(SDL_PollEvent(&event))
         {
            //If a key was pressed
            if( event.type == SDL_KEYDOWN )
            {
                //If enter was pressed
                if( event.key.keysym.sym == SDLK_RETURN )
                {
                    //if enter was pressed cap frame rate
                    !cap;
                }
                if( event.key.keysym.sym == SDLK_9 )
                {
                    if((Mix_PlayMusic( music, -1)==-1)
                       {return 1;} 
                }
            }    
            else if(event.type==SDL_QUIT)
            {
                go_on=false;
            }
         } 
         apply_surface(0,0,background,screen);
        apply_surface(180,140,player1,screen); 
   }                                                                   
   
   clean_up();
   
    
    
    return 0;
}


bool init()
{
   if( SDL_Init( SDL_INIT_EVERYTHING )==-1)
   {
       return false;
   } 
   
   screen= SDL_SetVideoMode(SCREEN_WIDTH,SCREEN_HEIGHT,SCREEN_BPP,SDL_SWSURFACE);
    
   if(TTF_Init()==-1)
   {
      return false;
   }  
   else
   {
       //if ttf check is good initialize font format
       font=TTF_OpenFont( "abberancy.TTF", 50 );
       if(font==NULL)
          return false;  
   }
   //Initialize SDL_mixer 
   if( Mix_OpenAudio( 22050, MIX_DEFAULT_FORMAT, 2, 4096 ) == -1 ) 
   { 
       return false; 
   } 
   else // if everything is fine load music
   {
       music=Mix_LoadMUS( "dev.wav" );  
   }        
   if(screen == NULL)
   {
             return false;
   } 
  
   //window caption
   SDL_WM_SetCaption("BattleField",NULL);

return true;

}


SDL_Surface *load_image(std::string filename)
{
     //temporary image loader
     SDL_Surface *loadedImage= NULL;
     
     //the optimized image tgat will be used
     SDL_Surface *optimizedImage= NULL;
     
     //Load Image 
     loadedImage= IMG_Load(filename.c_str());
     
     //if nothng is wrong with the file
     if(loadedImage!=NULL)
     {      
       //Create an optimized image
       optimizedImage= SDL_DisplayFormat(loadedImage);
       
       //Free the old Image
       SDL_FreeSurface(loadedImage);
     }
     
     //color key new optimized image
     if(optimizedImage!=NULL)
     {
        //clear black from behind image
        Uint32 colorkey = SDL_MapRGB( optimizedImage->format, 0, 0, 0);
        SDL_SetColorKey( optimizedImage, SDL_RLEACCEL | SDL_SRCCOLORKEY, colorkey );
     }
     //return new image
     return optimizedImage;
}    

void apply_surface(int x, int y, SDL_Surface * source, SDL_Surface* destination)
{
     //Make a temporary rectangle to hold the offsets
     SDL_Rect offset;
     
     //Dive the offsets of the triangle
     offset.x=x;
     offset.y=y;
     
     //Blit surface
     SDL_BlitSurface(source, NULL, destination, &offset);
} 

bool clean_up()
{
     //Free all used surfaces memory
   
   SDL_FreeSurface(player1);
   SDL_FreeSurface(background);
   SDL_FreeSurface(message);
   //Free the sound effects 
   Mix_FreeMusic( music ); 
   TTF_CloseFont( font );
   SDL_Quit(); 
   TTF_Quit();
   
}