SDLTurtleSpaceRenderer.cpp
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/*
* TOBY -- An abstract interpreter engine and system for learning.
* Copyright (C) 1999 Ryan C. Gordon.
*
* 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 2
* 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, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include "platform/renderers/sdlrenderer/SDLTurtleSpaceRenderer.h"
SDLTurtleSpaceRenderer::SDLTurtleSpaceRenderer(Uint32 flags)
: FrameBufferTurtleSpaceRenderer(),
sdlflags(flags),
swsurface(NULL)
{
} // Constructor
SDLTurtleSpaceRenderer::~SDLTurtleSpaceRenderer(void)
{
deleteSurface();
SDL_QuitSubSystem(SDL_INIT_VIDEO);
} // Destructor
bool SDLTurtleSpaceRenderer::screenResize(int _w, int _h)
{
if (SDL_Init(SDL_INIT_VIDEO) < 0)
return(false);
SDL_WM_SetCaption("Toby", "Toby");
SDL_Surface *screen = SDL_SetVideoMode(_w, _h, 32, sdlflags);
return(screen != NULL);
} // SDLTurtleSpaceRenderer::screenResize
void SDLTurtleSpaceRenderer::createSurface(int _w, int _h)
{
swsurface = SDL_CreateRGBSurface(SDL_SWSURFACE, _w, _h, 32,
0x00FF0000, 0x0000FF00,
0x000000FF, 0xFF000000);
} // SDLTurtleSpaceRenderer::createSurface
void SDLTurtleSpaceRenderer::deleteSurface(void)
{
if (swsurface != NULL)
{
SDL_FreeSurface(swsurface);
swsurface = NULL;
} // if
} // SDLTurtleSpaceRenderer::deleteSurface
void SDLTurtleSpaceRenderer::putToScreen(toby_uint32 *pix,
int x, int y,
int w, int h)
{
assert(pix == swsurface->pixels);
SDL_Rect rect = {x, y, w, h};
SDL_Surface *screen = SDL_GetVideoSurface();
assert(screen != NULL);
if (SDL_MUSTLOCK(screen))
SDL_LockSurface(screen);
SDL_BlitSurface(swsurface, &rect, screen, &rect);
if (SDL_MUSTLOCK(screen))
SDL_UnlockSurface(screen);
SDL_UpdateRect(screen, x, y, w, h); // !!! need this?
} // SDLTurtleSpaceRenderer::putToScreen
void SDLTurtleSpaceRenderer::putMultToScreen(toby_uint32 *pix, int rectCount,
FrameBufferRect *rects)
{
assert(pix == swsurface->pixels);
SDL_Surface *screen = SDL_GetVideoSurface();
assert(screen != NULL);
if (SDL_MUSTLOCK(screen))
SDL_LockSurface(screen);
for (int i = 0; i < rectCount; i++)
{
SDL_Rect r = {rects[i].x, rects[i].y, rects[i].w, rects[i].h};
SDL_BlitSurface(swsurface, &r, screen, &r);
SDL_UpdateRect(screen, r.x, r.y, r.w, r.h);
} // for
if (SDL_MUSTLOCK(screen))
SDL_UnlockSurface(screen);
// SDL_UpdateRects(screen, rectCount, (SDL_Rect *) rects); // !!! need this?
} // SDLTurtleSpaceRenderer::putToScreen
toby_uint32 *SDLTurtleSpaceRenderer::getSurface(void)
{
if (swsurface == NULL)
return(NULL);
return((toby_uint32 *) swsurface->pixels);
} // SDLTurtleSpaceRenderer::getSurface
TurtleSpaceRenderer *__platformBuildStandaloneRenderer(char *winTitle,
int *argc, char ***argv)
{
SDLTurtleSpaceRenderer *retval = new SDLTurtleSpaceRenderer(0);
SDL_WM_SetCaption(winTitle, winTitle);
return(retval);
} // __platformBuildStandaloneRenderer
bool __platformRendererDoEvents(void)
{
bool retval = true;
SDL_Event event;
while (SDL_PollEvent(&event))
{
if (event.type == SDL_QUIT)
retval = false;
} // while
return(retval);
} // __platformRendererDoEvents
// end of SDLTurtleSpaceRenderer.cpp ...