//
// Change video mode at runtime
//
hal_bool SDL2_SetNewVideoMode(int w, int h, int fs, int mnum)
{
hal_bool res;
if((res = SDL2_SetVideoMode(w, h, fs, mnum)))
SDL2_saveVideoMode(); // remember settings
// notify all registered game objects and subsystems of the change
VAllocItem::ModeChanging();
return res;
}
int main(int argc, char* argv[]){
if(argc != 3){
std::cout << "Usage: " << argv[0] << " foreground_image background_image\n" << "Returns 0 if sucessful, else 1" << std::endl;
return 1;
}
//image to load
std::string message_filename(argv[1]);
std::string background_filename(argv[2]);
//init
if(SDL_Init(SDL_INIT_EVERYTHING) == -1)
return 1;
//set up screen region
screen = SDL2_SetVideoMode(SCREEN_WIDTH, SCREEN_HEIGHT, SCREEN_BPP, SDL_SWSURFACE);
if(screen == NULL)
return 1;
//window caption
SDL_WM_SetCaption("Hello World", NULL);
//load image
message = load_image(message_filename);
background = load_image(background_filename);
//Applies image to screen region
//background
apply_surface( 320, 0, background, screen );
apply_surface( 0, 240, background, screen );
apply_surface( 320, 240, background, screen );
//message
apply_surface(180, 140, message, screen);
//updates screen
if(SDL_Flip(screen) == -1){
return 1;
}
//pause
SDL_Delay(2000);
//Cleanup
SDL_FreeSurface(message);
SDL_FreeSurface(background);
SDL_Quit();
return 0;
}
//
// Set initial video mode at startup using configuration file settings
//
void SDL2_InitVideo()
{
SDL2_SetVideoMode(screenwidth, screenheight, fullscreen, monitornum);
SDL2_saveVideoMode(); // remember settings
}
//
// Set video mode
//
hal_bool SDL2_SetVideoMode(int width, int height, int fs, int mnum)
{
if(glcontext)
{
SDL_GL_DeleteContext(glcontext);
glcontext = nullptr;
}
if(mainwindow)
{
SDL_DestroyWindow(mainwindow);
mainwindow = nullptr;
}
Uint32 flags = SDL_WINDOW_OPENGL | SDL_WINDOW_INPUT_FOCUS | SDL_WINDOW_MOUSE_FOCUS | SDL_WINDOW_SHOWN;
int x = SDL_WINDOWPOS_CENTERED_DISPLAY(mnum);
int y = SDL_WINDOWPOS_CENTERED_DISPLAY(mnum);
if(fs == 1)
flags |= SDL_WINDOW_FULLSCREEN;
// if dimensions are zero, then use fullscreen desktop
if(!(width && height) || fs == -1)
{
x = SDL_WINDOWPOS_UNDEFINED_DISPLAY(mnum);
y = SDL_WINDOWPOS_UNDEFINED_DISPLAY(mnum);
flags |= SDL_WINDOW_FULLSCREEN_DESKTOP;
fs = -1;
}
// set GL attributes
SDL_GL_SetAttribute(SDL_GL_RED_SIZE, 8);
SDL_GL_SetAttribute(SDL_GL_GREEN_SIZE, 8);
SDL_GL_SetAttribute(SDL_GL_BLUE_SIZE, 8);
SDL_GL_SetAttribute(SDL_GL_ALPHA_SIZE, 8);
SDL_GL_SetAttribute(SDL_GL_BUFFER_SIZE, 32);
SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
if(!(mainwindow = SDL_CreateWindow("Calico", x, y, width, height, flags)))
{
// Try resetting previous mode
if(width != curscreenwidth || height != curscreenheight || fs != curfullscreen ||
mnum != curmonitornum)
{
return SDL2_SetVideoMode(curscreenwidth, curscreenheight, curfullscreen, curmonitornum);
}
else
{
hal_platform.fatalError("Failed to set video mode %dx%d (%s)", width, height,
SDL_GetError());
}
}
// set window icon
hal_platform.setIcon();
// create GL context
if(!(glcontext = SDL_GL_CreateContext(mainwindow)))
{
hal_platform.fatalError("Failed to create GL context (%s)", SDL_GetError());
}
// remember set state
SDL_GetWindowSize(mainwindow, &curscreenwidth, &curscreenheight);
curfullscreen = fs;
curmonitornum = mnum;
// calculate game subscreen geometry
SDL2_calcSubRect();
// make current and set swap
SDL_GL_MakeCurrent(mainwindow, glcontext);
SDL2_ToggleGLSwap(HAL_TRUE);
// wake up RB system
RB_InitDefaultState();
// set orthonormal projection
SDL2_setOrthoMode(curscreenwidth, curscreenheight);
// update appstate maintenance
hal_appstate.updateFocus();
hal_appstate.updateGrab();
return HAL_TRUE;
}
