Game Developers

/* Copyright (C) 2011  I.Merabtene (OSasuke) <http://gamedevelopper.com>
 
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
 
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.
 
You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>. */
 
RakNet::RakString GetInput(SDL_Surface* screen, TTF_Font* font, const RakNet::RakString& textlabel, int maxChar)
{
    SDL_Color cblack = {0,0,0};
    SDL_EnableUNICODE(1);
 
    SDL_Surface* label = TTF_RenderText_Blended(font, textlabel.C_String(), cblack);
 
    SDL_Surface* textzone = SDL_CreateRGBSurface(SDL_HWSURFACE, 340, 42, 16, 0, 0, 0, 0);
    SDL_FillRect(textzone, 0, SDL_MapRGB(textzone->format, 188, 188, 225));
 
    SDL_Surface* sinput;
 
    RakNet::RakString input;
    bool stop=false;
    SDL_Event event;
 
    SDL_Rect zonepos, textpos, labelpos;
    zonepos.x = WIN_W/2 - textzone->w/2;
    zonepos.y = WIN_H/2 - textzone->h/2 + 32;
    labelpos.x = WIN_W/2 - textzone->w/2;
    labelpos.y = WIN_H/2 - textzone->h/2 - 16;
 
    SDL_BlitSurface(label, 0, screen, &labelpos);
 
    while(!stop)
    {
        SDL_BlitSurface(textzone, 0, screen, &zonepos);
        sinput = TTF_RenderText_Blended(font, input.C_String(), cblack);
            int textW = 0;
            if(sinput) textW = sinput->w;
        textpos.x = zonepos.x + zonepos.w/2 - textW/2;
        textpos.y = zonepos.y;
        SDL_BlitSurface(sinput, 0, screen, &textpos);
 
        SDL_WaitEvent(&event);
            if(event.type==SDL_QUIT)
            {
                exit(0);
            }
            if(event.type==SDL_KEYDOWN)
            {
                if(event.key.keysym.sym == SDLK_RETURN)
                    stop=true;
                if(event.key.keysym.sym == SDLK_BACKSPACE && input.GetLength()>0)
                    input.Erase(input.GetLength()-1, 1);
                else if(isprint(event.key.keysym.unicode) && input.GetLength()<maxChar)
                    input += (char)event.key.keysym.unicode;
            }
 
        SDL_Flip(screen);
        SDL_FreeSurface(sinput);
    }
 
    SDL_FreeSurface(textzone);
    return input;
}
 
void DrawMessage(SDL_Surface* screen, TTF_Font* font, const RakNet::RakString& textlabel, int delay)
{
    SDL_Color cblack = {0,0,0};
 
    SDL_Surface* label = TTF_RenderText_Blended(font, textlabel.C_String(), cblack);
 
    SDL_Rect labelpos;
    labelpos.x = WIN_W/2 - label->w/2;
    labelpos.y = WIN_H/2 - label->h/2;
 
    SDL_BlitSurface(label, 0, screen, &labelpos);
    SDL_Flip(screen);
 
    int t1=SDL_GetTicks();
    while(SDL_GetTicks()-t1 < delay)
    {
        SDL_Delay(25);
    }
}