236 lines
8 KiB
C++
236 lines
8 KiB
C++
/*
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Copyright 2014 Michele "King_DuckZ" Santullo
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This file is part of CloonelJump.
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CloonelJump is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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CloonelJump is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with CloonelJump. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "sdlmain.hpp"
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#include "observersmanager.hpp"
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#include "sizenotifiable.hpp"
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#include "sizeratio.hpp"
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#include <SDL2/SDL.h>
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#include <stdexcept>
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#include <sstream>
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#include <ciso646>
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#include <cstring>
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#include <utility>
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#if defined(RASPBERRY_PI)
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#include <bcm_host.h>
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#endif
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namespace cloonel {
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namespace {
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///----------------------------------------------------------------------
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///----------------------------------------------------------------------
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std::pair<int, std::string> GetRenderingDriver() {
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typedef std::pair<int, std::string> RetPairType;
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const int count = SDL_GetNumRenderDrivers();
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int opengles = -1;
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int opengles2 = -1;
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int opengl = -1;
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SDL_RendererInfo info;
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for (int z = 0; z < count; ++z) {
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const int ret = SDL_GetRenderDriverInfo(z, &info);
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if (0 == ret) {
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if (std::strcmp("opengles", info.name) == 0)
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opengles = z;
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else if (std::strcmp("opengles2", info.name) == 0)
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opengles2 = z;
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else if (std::strcmp("opengl", info.name) == 0)
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opengl = z;
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}
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}
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#if !defined(FORCE_OPENGLES)
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if (opengl > -1)
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return RetPairType(opengl, "opengl");
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#endif
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if (opengles2 > -1)
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return RetPairType(opengles2, "opengles2");
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if (opengles > -1)
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return RetPairType(opengles, "opengles");
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#if defined(FORCE_OPENGLES)
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if (opengl > -1)
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return RetPairType(opengl, "opengl");
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#endif
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return RetPairType(-1, "default");
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}
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} //unnamed namespace
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struct SDLMain::LocalData {
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SDL_Window* window;
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SDL_Renderer* renderer;
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SizeRatio sizeratio;
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ObserversManager<SizeNotifiableBase*> resChangeNotifList;
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bool initialized;
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#if defined(RASPBERRY_PI)
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bool bcmInitialized;
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#endif
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};
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///------------------------------------------------------------------------
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///------------------------------------------------------------------------
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SDLMain::SDLMain (const char* parGameName, ushort2 parRes, ushort2 parReferenceRes) :
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m_gameName(parGameName),
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m_localData(new LocalData)
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{
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m_localData->sizeratio.SetOriginal(static_cast<float2>(parReferenceRes), static_cast<float2>(parRes));
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m_localData->initialized = false;
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#if defined(RASPBERRY_PI)
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m_localData->bcmInitialized = false;
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#endif
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}
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///------------------------------------------------------------------------
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///------------------------------------------------------------------------
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SDLMain::~SDLMain() noexcept {
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ClearIFN(*m_localData);
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#if defined(RASPBERRY_PI)
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assert(not m_localData->bcmInitialized);
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#endif
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}
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///------------------------------------------------------------------------
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///------------------------------------------------------------------------
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void SDLMain::Init() {
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if (not m_localData->initialized)
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InitSDL(*m_localData);
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}
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///------------------------------------------------------------------------
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///------------------------------------------------------------------------
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void SDLMain::InitSDL (LocalData& parInitSDL) {
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#if defined(RASPBERRY_PI)
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assert(not parInitSDL.bcmInitialized);
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bcm_host_init();
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parInitSDL.bcmInitialized = true;
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#endif
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parInitSDL.window = nullptr;
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parInitSDL.renderer = nullptr;
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parInitSDL.initialized = false;
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if (SDL_Init(SDL_INIT_EVERYTHING) == -1)
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throw std::runtime_error(SDL_GetError());
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parInitSDL.initialized = true;
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#if defined(FORCE_OPENGLES)
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SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, SDL_GL_CONTEXT_PROFILE_ES);
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#endif
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const float2 wh(m_localData->sizeratio.Resolution());
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SDL_Window* const win = SDL_CreateWindow(m_gameName.c_str(), 100, 100, static_cast<int>(wh.x()), static_cast<int>(wh.y()), SDL_WINDOW_SHOWN | SDL_WINDOW_RESIZABLE);
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if (!win)
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throw std::runtime_error(SDL_GetError());
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parInitSDL.window = win;
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const auto rendererDriver = GetRenderingDriver();
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m_rendererName = rendererDriver.second;
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SDL_Renderer* const renderer = SDL_CreateRenderer(win, rendererDriver.first, SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC);
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if (!renderer)
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throw std::runtime_error(SDL_GetError());
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parInitSDL.renderer = renderer;
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}
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///------------------------------------------------------------------------
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///------------------------------------------------------------------------
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void SDLMain::ClearIFN (LocalData& parInitSDL) noexcept {
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if (parInitSDL.renderer)
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SDL_DestroyRenderer(parInitSDL.renderer);
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if (parInitSDL.window)
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SDL_DestroyWindow(parInitSDL.window);
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if (parInitSDL.initialized) {
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parInitSDL.initialized = false;
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SDL_Quit();
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}
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#if defined(RASPBERRY_PI)
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if (parInitSDL.bcmInitialized) {
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parInitSDL.bcmInitialized = false;
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bcm_host_deinit();
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}
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#endif
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}
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///------------------------------------------------------------------------
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///------------------------------------------------------------------------
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SDL_Renderer* SDLMain::GetRenderer() {
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if (m_localData->initialized)
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return m_localData->renderer;
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else
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return nullptr;
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}
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///------------------------------------------------------------------------
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///------------------------------------------------------------------------
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void SDLMain::SetResolution (ushort2 parRes) {
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m_localData->sizeratio.UpdateResolution(static_cast<float2>(parRes));
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{
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SDL_Renderer* const renderer = GetRenderer();
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assert(renderer);
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const int retVal = SDL_RenderSetLogicalSize(renderer, parRes.x(), parRes.y());
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if (retVal) {
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std::ostringstream oss;
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oss << "Error setting logical size to renderer to " << parRes.x() << "x" << parRes.y() << ": " << SDL_GetError();
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throw std::runtime_error(oss.str());
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}
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const SDL_Rect area = { 0, 0, parRes.x(), parRes.y() };
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const int retValViewport = SDL_RenderSetViewport(renderer, &area);
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if (retValViewport) {
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std::ostringstream oss;
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oss << "Error setting viewport to renderer to " << parRes.x() << "x" << parRes.y() << ": " << SDL_GetError();
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throw std::runtime_error(oss.str());
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}
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}
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for (auto currNotifiable : m_localData->resChangeNotifList) {
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currNotifiable->NotifyResChanged(m_localData->sizeratio);
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}
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}
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///------------------------------------------------------------------------
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///------------------------------------------------------------------------
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size_t SDLMain::RegisterForResChange (SizeNotifiableBase* parNotif) {
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parNotif->NotifyResChanged(m_localData->sizeratio);
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return m_localData->resChangeNotifList.Add(parNotif);
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}
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///------------------------------------------------------------------------
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///------------------------------------------------------------------------
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void SDLMain::UnregisterForResChange (size_t parID) noexcept {
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m_localData->resChangeNotifList.Remove(parID);
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}
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///------------------------------------------------------------------------
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///------------------------------------------------------------------------
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void SDLMain::SwapRegisteredForResChange (size_t parID, SizeNotifiableBase* parNotif) {
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m_localData->resChangeNotifList.Update(parID, parNotif);
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}
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///------------------------------------------------------------------------
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///------------------------------------------------------------------------
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ushort2 SDLMain::WidthHeight() const noexcept {
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return static_cast<ushort2>(m_localData->sizeratio.Resolution());
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}
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///------------------------------------------------------------------------
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///------------------------------------------------------------------------
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std::string SDLMain::GetVideoDriverName() const {
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return std::string(SDL_GetCurrentVideoDriver());
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}
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} //namespace cloonel
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