openrw/rwgame/GameWindow.cpp

#include <core/Logger.hpp>
#include "GameWindow.hpp"

GameWindow::GameWindow() :
	window(nullptr), glcontext(nullptr)
{

}


void GameWindow::create(const std::string& title, size_t w, size_t h, bool fullscreen)
{
	Uint32 style = SDL_WINDOW_OPENGL | SDL_WINDOW_RESIZABLE | SDL_WINDOW_HIDDEN;
	if (fullscreen)
		style |= SDL_WINDOW_FULLSCREEN;

	SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, SDL_GL_CONTEXT_PROFILE_CORE);
	SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 3);
	SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 3);
	SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
	SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 24);
	SDL_GL_SetAttribute(SDL_GL_STENCIL_SIZE, 8);

	window = SDL_CreateWindow(title.c_str(), SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, w, h, style);
	if (window == nullptr) {
		// Window creation failure is fatal
		std::string sdlErrorStr = SDL_GetError();
		throw std::runtime_error("SDL_CreateWindow failed: " + sdlErrorStr);
	}
	glcontext = SDL_GL_CreateContext(window);
	if (glcontext == nullptr) {
		// context creation failure is fatal
		std::string sdlErrorStr = SDL_GetError();
		throw std::runtime_error("SDL_GL_CreateContext failed: " + sdlErrorStr);
	}

	SDL_ShowWindow(window);
}


void GameWindow::close()
{
	SDL_GL_DeleteContext(glcontext);
	SDL_DestroyWindow(window);

	window = nullptr;
}


void GameWindow::showCursor()
{
	SDL_SetRelativeMouseMode(SDL_FALSE);
}


void GameWindow::hideCursor()
{
	SDL_SetRelativeMouseMode(SDL_TRUE);
}


glm::ivec2 GameWindow::getSize() const
{
	int x, y;
	SDL_GL_GetDrawableSize(window, &x, &y);

	return glm::ivec2(x, y);
}