Functions.cpp

#include "Functions.h"

void WriteText(SDL_Surface* Surface,TTF_Font* FontIn,char* Tekst,int NrOfChars,int X,int Y,int YSpacing,SDL_Color ColorIn)
{
	char List[100][255];
	int Lines,Teller,Chars;
	SDL_Rect DstRect;
	SDL_Surface* TmpSurface1;
	Lines = 0;
	Chars = 0;
	for (Teller=0;Teller<NrOfChars;Teller++)
	{
		if(Lines > 100)
			break;
		if((Tekst[Teller] == '\n') || (Chars==255))
		{
			List[Lines][Chars]='\0';
			Lines++;
			Chars = 0;
		}
		else
		{
		 	List[Lines][Chars]=Tekst[Teller];
		 	Chars++;
		}
	}
	List[Lines][Chars] = '\0';
	for (Teller=0;Teller <= Lines;Teller++)
	{
		if(strlen(List[Teller]) > 0)
		{
			TmpSurface1 = TTF_RenderText_Blended(FontIn,List[Teller],ColorIn);
			DstRect.x = X;
			DstRect.y = Y + (Teller) * TTF_FontLineSkip(FontIn) + (Teller*YSpacing);
			DstRect.w = TmpSurface1->w;
			DstRect.h = TmpSurface1->h;
			SDL_BlitSurface(TmpSurface1,NULL,Surface,&DstRect);
			SDL_FreeSurface(TmpSurface1);
		}
	}
}

bool FileExists(char * FileName)
{
	FILE *Fp;
	Fp = fopen(FileName,"rb");
	if (Fp)
	{
		fclose(Fp);
		return true;
	}
	else
		return false;
}

SDL_Surface* ScaleSurface(SDL_Surface* Surface,int ScaleFactor)
{

    int X=0,Y=0,Xi=0,Yi=0,X2=0,Y2=0;
    SDL_Surface *Tmp;
    Tmp = SDL_CreateRGBSurface(SDL_SWSURFACE,Surface->w * ScaleFactor,Surface->h * ScaleFactor,Surface->format->BitsPerPixel,Surface->format->Rmask,Surface->format->Gmask,Surface->format->Bmask,Surface->format->Amask);
    if(ScaleFactor == 1)
    {
        SDL_BlitSurface(Surface,NULL,Tmp,NULL);
    }
    else
    {
        SDL_LockSurface(Surface);
        SDL_LockSurface(Tmp);



        for(Y=0;Y<Surface->h;Y++)
        {
            //printf("scale1\n");
            for(X=0;X<Surface->w;X++)
            {
                //copy single pixel
                for(Xi = 0;Xi<ScaleFactor;Xi++)
                {
                    memcpy((pixel *)Tmp->pixels +(Y2)*Tmp->pitch/SCREEN_BYTE + X2,(pixel *)Surface->pixels + (Y)*Surface->pitch/SCREEN_BYTE+X,SCREEN_BYTE);
                    X2++;
                }
            }
            X2 = 0;
            //copy previous line
            for (Yi=1;Yi<ScaleFactor;Yi++)
            {
                memcpy((pixel *)Tmp->pixels + (Y2+Yi)*Tmp->pitch/SCREEN_BYTE,(pixel *)Tmp->pixels+(Y2)*Tmp->pitch/SCREEN_BYTE,Tmp->w*SCREEN_BYTE);
            }

            Y2+=ScaleFactor;
        }

        SDL_UnlockSurface(Tmp);
        SDL_UnlockSurface(Surface);
    }
    return Tmp;

}


char chr(int ascii)
{
	return((char)ascii);
}

int ord(char chr)
{
	return((int)chr);
}

void AddUnderScores (char *string)
{
	int Teller;
	for(Teller=0;Teller<strlen(string);Teller++)
		if(string[Teller] == ' ')
			string[Teller] = '_';
}

void RemoveUnderScores (char *string)
{
	int Teller;
	for(Teller=0;Teller<strlen(string);Teller++)
		if(string[Teller] == '_')
			string[Teller] = ' ';
}