int main(int argc, char *argv[])
{
Conversation conversation;
bool debugMode = false;
for(const char *const *it = argv + 1; *it; ++it)
{
string arg = *it;
if(arg == "-h" || arg == "--help")
{
PrintHelp();
return 0;
}
else if(arg == "-v" || arg == "--version")
{
PrintVersion();
return 0;
}
else if(arg == "-t" || arg == "--talk")
conversation = LoadConversation();
else if(arg == "-d" || arg == "--debug")
debugMode = true;
}
PlayerInfo player;
try {
SDL_Init(SDL_INIT_VIDEO);
// Begin loading the game data.
GameData::BeginLoad(argv);
Audio::Init(GameData::Sources());
// On Windows, make sure that the sleep timer has at least 1 ms resolution
// to avoid irregular frame rates.
#ifdef _WIN32
timeBeginPeriod(1);
#endif
player.LoadRecent();
player.ApplyChanges();
// Check how big the window can be.
SDL_DisplayMode mode;
if(SDL_GetCurrentDisplayMode(0, &mode))
return DoError("Unable to query monitor resolution!");
Preferences::Load();
Uint32 flags = SDL_WINDOW_OPENGL | SDL_WINDOW_RESIZABLE | SDL_WINDOW_SHOWN | SDL_WINDOW_ALLOW_HIGHDPI;
if(Preferences::Has("fullscreen"))
flags |= SDL_WINDOW_FULLSCREEN_DESKTOP;
// Make the window just slightly smaller than the monitor resolution.
int maxWidth = mode.w;
int maxHeight = mode.h;
// Restore this after toggling fullscreen.
int restoreWidth = 0;
int restoreHeight = 0;
if(maxWidth < 640 || maxHeight < 480)
return DoError("Monitor resolution is too small!");
if(Screen::RawWidth() && Screen::RawHeight())
{
// Never allow the saved screen width to be leaving less than 100
// pixels free around the window. This avoids the problem where you
// maximize without going full-screen, and next time the window pops
// up you can't access the resize control because it is offscreen.
Screen::SetRaw(
min(Screen::RawWidth(), (maxWidth - 100)),
min(Screen::RawHeight(), (maxHeight - 100)));
if(flags & SDL_WINDOW_FULLSCREEN_DESKTOP)
{
restoreWidth = Screen::RawWidth();
restoreHeight = Screen::RawHeight();
Screen::SetRaw(maxWidth, maxHeight);
}
}
else
Screen::SetRaw(maxWidth - 100, maxHeight - 100);
// Make sure the zoom factor is not set too high for the full UI to fit.
if(Screen::Height() < 700)
Screen::SetZoom(100);
// Create the window.
SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
#ifdef _WIN32
SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 3);
SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 0);
#endif
SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, SDL_GL_CONTEXT_PROFILE_CORE);
SDL_Window *window = SDL_CreateWindow("Endless Sky",
SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED,
Screen::RawWidth(), Screen::RawHeight(), flags);
if(!window)
return DoError("Unable to create window!");
SDL_GLContext context = SDL_GL_CreateContext(window);
if(!context)
return DoError("Unable to create OpenGL context! Check if your system supports OpenGL 3.0.", window);
if(SDL_GL_MakeCurrent(window, context))
return DoError("Unable to set the current OpenGL context!", window, context);
SDL_GL_SetSwapInterval(1);
// Initialize GLEW.
#ifndef __APPLE__
glewExperimental = GL_TRUE;
if(glewInit() != GLEW_OK)
return DoError("Unable to initialize GLEW!", window, context);
#endif
// Check that the OpenGL version is high enough.
const char *glVersion = reinterpret_cast<const char *>(glGetString(GL_VERSION));
if(!glVersion || !*glVersion)
return DoError("Unable to query the OpenGL version!", window, context);
const char *glslVersion = reinterpret_cast<const char *>(glGetString(GL_SHADING_LANGUAGE_VERSION));
if(!glslVersion || !*glslVersion)
{
ostringstream out;
out << "Unable to query the GLSL version. OpenGL version is " << glVersion << ".";
return DoError(out.str(), window, context);
}
if(*glVersion < '3')
{
ostringstream out;
out << "Endless Sky requires OpenGL version 3.0 or higher." << endl;
out << "Your OpenGL version is " << glVersion << ", GLSL version " << glslVersion << "." << endl;
out << "Please update your graphics drivers.";
return DoError(out.str(), window, context);
}
glClearColor(0.f, 0.f, 0.0f, 1.f);
glEnable(GL_BLEND);
glDisable(GL_DEPTH_TEST);
glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
GameData::LoadShaders();
{
// Check whether this is a high-DPI window.
int width = 0;
int height = 0;
SDL_GL_GetDrawableSize(window, &width, &height);
Screen::SetHighDPI(width > Screen::RawWidth() && height > Screen::RawHeight());
// Fix a possible race condition leading to the wrong window dimensions.
glViewport(0, 0, width, height);
}
UI gamePanels;
UI menuPanels;
menuPanels.Push(new MenuPanel(player, gamePanels));
if(!conversation.IsEmpty())
menuPanels.Push(new ConversationPanel(player, conversation));
string swizzleName = "_texture_swizzle";
#ifndef __APPLE__
const char *extensions = reinterpret_cast<const char *>(glGetString(GL_EXTENSIONS));
if(!strstr(extensions, swizzleName.c_str()))
#else
bool hasSwizzle = false;
GLint extensionCount;
glGetIntegerv(GL_NUM_EXTENSIONS, &extensionCount);
for(GLint i = 0; i < extensionCount && !hasSwizzle; ++i)
{
const char *extension = reinterpret_cast<const char *>(glGetStringi(GL_EXTENSIONS, i));
hasSwizzle = (extension && strstr(extension, swizzleName.c_str()));
}
if(!hasSwizzle)
#endif
menuPanels.Push(new Dialog(
"Note: your computer does not support the \"texture swizzling\" OpenGL feature, "
"which Endless Sky uses to draw ships in different colors depending on which "
"government they belong to. So, all human ships will be the same color, which "
"may be confusing. Consider upgrading your graphics driver (or your OS)."));
FrameTimer timer(60);
bool isPaused = false;
while(!menuPanels.IsDone())
{
// Handle any events that occurred in this frame.
SDL_Event event;
while(SDL_PollEvent(&event))
{
UI &activeUI = (menuPanels.IsEmpty() ? gamePanels : menuPanels);
// The caps lock key slows the game down (to make it easier to
// see and debug things that are happening quickly).
if(debugMode && (event.type == SDL_KEYDOWN || event.type == SDL_KEYUP)
&& event.key.keysym.sym == SDLK_CAPSLOCK)
{
timer.SetFrameRate((event.key.keysym.mod & KMOD_CAPS) ? 10 : 60);
}
else if(debugMode && event.type == SDL_KEYDOWN && event.key.keysym.sym == SDLK_BACKQUOTE)
{
isPaused = !isPaused;
}
else if(event.type == SDL_KEYDOWN && menuPanels.IsEmpty()
&& Command(event.key.keysym.sym).Has(Command::MENU)
&& !gamePanels.IsEmpty() && gamePanels.Top()->IsInterruptible())
{
menuPanels.Push(shared_ptr<Panel>(
new MenuPanel(player, gamePanels)));
}
else if(event.type == SDL_QUIT)
{
menuPanels.Quit();
}
else if(event.type == SDL_WINDOWEVENT && event.window.event == SDL_WINDOWEVENT_SIZE_CHANGED)
{
int width = event.window.data1 & ~1;
int height = event.window.data2 & ~1;
if(width != Screen::RawWidth() || height != Screen::RawHeight())
{
Screen::SetRaw(width, height);
if((event.window.data1 | event.window.data2) & 1)
SDL_SetWindowSize(window, Screen::RawWidth(), Screen::RawHeight());
SDL_GL_GetDrawableSize(window, &width, &height);
glViewport(0, 0, width, height);
}
}
else if(event.type == SDL_KEYDOWN
&& (Command(event.key.keysym.sym).Has(Command::FULLSCREEN)
|| (event.key.keysym.sym == SDLK_RETURN && event.key.keysym.mod & KMOD_ALT)))
{
if(restoreWidth)
{
SDL_SetWindowFullscreen(window, 0);
Screen::SetRaw(restoreWidth, restoreHeight);
SDL_SetWindowSize(window, Screen::RawWidth(), Screen::RawHeight());
restoreWidth = 0;
restoreHeight = 0;
}
else
{
restoreWidth = Screen::RawWidth();
restoreHeight = Screen::RawHeight();
Screen::SetRaw(maxWidth, maxHeight);
SDL_SetWindowFullscreen(window, SDL_WINDOW_FULLSCREEN_DESKTOP);
}
int width, height;
SDL_GL_GetDrawableSize(window, &width, &height);
glViewport(0, 0, width, height);
}
else if(activeUI.Handle(event))
{
// No need to do anything more!
}
}
Font::ShowUnderlines(SDL_GetModState() & KMOD_ALT);
// Tell all the panels to step forward, then draw them.
((!isPaused && menuPanels.IsEmpty()) ? gamePanels : menuPanels).StepAll();
Audio::Step();
// That may have cleared out the menu, in which case we should draw
// the game panels instead:
(menuPanels.IsEmpty() ? gamePanels : menuPanels).DrawAll();
SDL_GL_SwapWindow(window);
timer.Wait();
}
// If you quit while landed on a planet, save the game.
if(player.GetPlanet())
player.Save();
// The Preferences class reads the screen dimensions, so update them if
// the window is full screen:
bool isFullscreen = (restoreWidth != 0);
Preferences::Set("fullscreen", isFullscreen);
if(isFullscreen)
Screen::SetRaw(restoreWidth, restoreHeight);
Preferences::Save();
Cleanup(window, context);
}
catch(const runtime_error &error)
{
DoError(error.what());
}
return 0;
}
