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SpaceCadetPinballEmscripten/SpaceCadetPinball/winmain.cpp

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#include "pch.h"
#include "winmain.h"
#include "fullscrn.h"
#include "memory.h"
#include "midi.h"
#include "pinball.h"
#include "options.h"
#include "pb.h"
#include "render.h"
#include "Sound.h"
#include <functional>
#ifdef __EMSCRIPTEN__
#include <emscripten.h>
#include <unistd.h>
#endif
SDL_Window *winmain::MainWindow = nullptr;
SDL_Renderer *winmain::Renderer = nullptr;
ImGuiIO *winmain::ImIO = nullptr;
int winmain::return_value = 0;
int winmain::bQuit = 0;
int winmain::activated;
int winmain::DispFrameRate = 0;
int winmain::DispGRhistory = 0;
int winmain::single_step = 0;
int winmain::has_focus = 1;
int winmain::last_mouse_x;
int winmain::last_mouse_y;
int winmain::mouse_down;
int winmain::no_time_loss;
bool winmain::restart = false;
gdrv_bitmap8 winmain::gfr_display{};
std::string winmain::DatFileName;
bool winmain::ShowAboutDialog = false;
bool winmain::ShowImGuiDemo = false;
bool winmain::ShowSpriteViewer = false;
bool winmain::LaunchBallEnabled = true;
bool winmain::HighScoresEnabled = true;
bool winmain::DemoActive = false;
char *winmain::BasePath;
std::string winmain::FpsDetails;
double winmain::UpdateToFrameRatio;
winmain::DurationMs winmain::TargetFrameTime;
static bool loop_stop = false;
void run_loop(std::function<void()> fn)
{
#ifdef __EMSCRIPTEN__
emscripten_set_main_loop_arg([](void *arg)
{
auto *fn_ptr = (std::function<void()> *)arg;
if (!loop_stop && fn_ptr != nullptr)
{
auto &fn = *fn_ptr;
fn();
}
},
(void *)&fn, 60, 1);
#else
while (!loop_stop)
{
fn();
}
#endif
}
int winmain::WinMain(LPCSTR lpCmdLine)
{
restart = false;
bQuit = false;
memory::init(memalloc_failure);
// SDL init
SDL_SetMainReady();
if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_AUDIO | SDL_INIT_TIMER | SDL_INIT_EVENTS) < 0)
{
SDL_ShowSimpleMessageBox(SDL_MESSAGEBOX_ERROR, "Could not initialize SDL2", SDL_GetError(), nullptr);
return 1;
}
#ifndef __EMSCRIPTEN__
BasePath = SDL_GetBasePath();
#else
BasePath = strdup("/game_resources/");
chdir(BasePath);
#endif
pinball::quickFlag = strstr(lpCmdLine, "-quick") != nullptr;
DatFileName = options::get_string("Pinball Data", pinball::get_rc_string(168, 0));
/*Check for full tilt .dat file and switch to it automatically*/
auto cadetFilePath = pinball::make_path_name("CADET.DAT");
auto cadetDat = fopen(cadetFilePath.c_str(), "r");
if (cadetDat)
{
fclose(cadetDat);
DatFileName = "CADET.DAT";
pb::FullTiltMode = true;
}
// SDL window
SDL_Window *window = SDL_CreateWindow(
pinball::get_rc_string(38, 0),
SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED,
600, 440,
SDL_WINDOW_HIDDEN | SDL_WINDOW_RESIZABLE);
MainWindow = window;
if (!window)
{
SDL_ShowSimpleMessageBox(SDL_MESSAGEBOX_ERROR, "Could not create window", SDL_GetError(), nullptr);
return 1;
}
SDL_Renderer *renderer = SDL_CreateRenderer(
window,
-1,
SDL_RENDERER_ACCELERATED);
Renderer = renderer;
if (!renderer)
{
SDL_ShowSimpleMessageBox(SDL_MESSAGEBOX_ERROR, "Could not create renderer", SDL_GetError(), window);
return 1;
}
SDL_SetRenderDrawColor(renderer, 0, 0, 0, 255);
SDL_SetHint(SDL_HINT_RENDER_SCALE_QUALITY, "nearest");
// ImGui init
IMGUI_CHECKVERSION();
ImGui::CreateContext();
ImGuiSDL::Initialize(renderer, 0, 0);
ImGui::StyleColorsDark();
ImGuiIO &io = ImGui::GetIO();
ImIO = &io;
// ImGui_ImplSDL2_Init is private, we are not actually using ImGui OpenGl backend
ImGui_ImplSDL2_InitForOpenGL(window, nullptr);
auto prefPath = SDL_GetPrefPath(nullptr, "SpaceCadetPinball");
auto iniPath = std::string(prefPath) + "imgui_pb.ini";
io.IniFilename = iniPath.c_str();
SDL_free(prefPath);
// PB init from message handler
{
++memory::critical_allocation;
options::init();
auto voiceCount = options::get_int("Voices", 8);
if (Sound::Init(voiceCount))
options::Options.Sounds = 0;
Sound::Activate();
if (!pinball::quickFlag && !midi::music_init())
options::Options.Music = 0;
if (pb::init())
{
SDL_ShowSimpleMessageBox(SDL_MESSAGEBOX_ERROR, "Could not load game data",
"The .dat file is missing", window);
return 1;
}
fullscrn::init();
--memory::critical_allocation;
}
pb::reset_table();
pb::firsttime_setup();
#ifndef __EMSCRIPTEN__
if (strstr(lpCmdLine, "-fullscreen"))
{
options::Options.FullScreen = 1;
}
#else
options::Options.FullScreen = 0;
#endif
SDL_ShowWindow(window);
fullscrn::set_screen_mode(options::Options.FullScreen);
if (strstr(lpCmdLine, "-demo"))
pb::toggle_demo();
else
pb::replay_level(0);
DWORD dtHistoryCounter = 300u, updateCounter = 0, frameCounter = 0;
auto frameStart = Clock::now();
double frameDuration = TargetFrameTime.count(), UpdateToFrameCounter = 0;
DurationMs sleepRemainder(0);
auto prevTime = frameStart;
run_loop([&]() {
if (DispFrameRate)
{
auto curTime = Clock::now();
if (curTime - prevTime > DurationMs(1000))
{
char buf[60];
auto elapsedSec = DurationMs(curTime - prevTime).count() * 0.001;
snprintf(buf, sizeof buf, "Updates/sec = %02.02f Frames/sec = %02.02f ",
updateCounter / elapsedSec, frameCounter / elapsedSec);
SDL_SetWindowTitle(window, buf);
FpsDetails = buf;
frameCounter = updateCounter = 0;
prevTime = curTime;
}
}
if (DispGRhistory)
{
if (!gfr_display.BmpBufPtr1)
{
auto plt = static_cast<ColorRgba*>(malloc(1024u));
auto pltPtr = &plt[10];
for (int i1 = 0, i2 = 0; i1 < 256 - 10; ++i1, i2 += 8)
{
unsigned char blue = i2, redGreen = i2;
if (i2 > 255)
{
blue = 255;
redGreen = i1;
}
*pltPtr++ = ColorRgba{Rgba{redGreen, redGreen, blue, 0}};
}
gdrv::display_palette(plt);
free(plt);
gdrv::create_bitmap(&gfr_display, 400, 15, 400, false);
}
if (!dtHistoryCounter)
{
dtHistoryCounter = 300;
gdrv::copy_bitmap(&render::vscreen, 300, 10, 0, 30, &gfr_display, 0, 0);
gdrv::fill_bitmap(&gfr_display, 300, 10, 0, 0, 0);
}
}
if (!ProcessWindowMessages() || bQuit) {
loop_stop = true;
return;
}
if (has_focus)
{
if (mouse_down)
{
int x, y;
SDL_GetMouseState(&x, &y);
pb::ballset(last_mouse_x - x, y - last_mouse_y);
SDL_WarpMouseInWindow(window, last_mouse_x, last_mouse_y);
}
if (!single_step)
{
auto deltaT = static_cast<int>(frameDuration);
frameDuration -= deltaT;
pb::frame(deltaT);
if (gfr_display.BmpBufPtr1)
{
auto deltaTPal = deltaT + 10;
auto fillChar = static_cast<uint8_t>(deltaTPal);
if (deltaTPal > 236)
{
fillChar = 1;
}
gdrv::fill_bitmap(&gfr_display, 1, 10, 300 - dtHistoryCounter, 0, fillChar);
--dtHistoryCounter;
}
updateCounter++;
}
if (UpdateToFrameCounter >= UpdateToFrameRatio)
{
UpdateToFrameCounter -= UpdateToFrameRatio;
ImGui_ImplSDL2_NewFrame();
ImGui::NewFrame();
RenderUi();
SDL_RenderClear(renderer);
render::PresentVScreen();
ImGui::Render();
ImGuiSDL::Render(ImGui::GetDrawData());
SDL_RenderPresent(renderer);
frameCounter++;
}
auto sdlError = SDL_GetError();
if (sdlError[0])
{
SDL_ClearError();
printf("SDL Error: %s\n", sdlError);
}
auto updateEnd = Clock::now();
auto targetTimeDelta = TargetFrameTime - DurationMs(updateEnd - frameStart) - sleepRemainder;
TimePoint frameEnd;
if (targetTimeDelta > DurationMs::zero())
{
std::this_thread::sleep_for(targetTimeDelta);
frameEnd = Clock::now();
sleepRemainder = DurationMs(frameEnd - updateEnd) - targetTimeDelta;
}
else
{
frameEnd = updateEnd;
sleepRemainder = DurationMs(0);
}
// Limit duration to 2 * target time
frameDuration = std::min(frameDuration + DurationMs(frameEnd - frameStart).count(),
2 * TargetFrameTime.count());
frameStart = frameEnd;
UpdateToFrameCounter++;
}
});
gdrv::destroy_bitmap(&gfr_display);
options::uninit();
midi::music_shutdown();
pb::uninit();
Sound::Close();
ImGuiSDL::Deinitialize();
ImGui_ImplSDL2_Shutdown();
SDL_DestroyRenderer(renderer);
SDL_DestroyWindow(window);
ImGui::DestroyContext();
SDL_Quit();
return return_value;
}
void winmain::RenderUi()
{
// No demo window in release to save space
#ifndef NDEBUG
if (ShowImGuiDemo)
ImGui::ShowDemoWindow(&ShowImGuiDemo);
#endif
if (ImGui::BeginMainMenuBar())
{
if (ImGui::BeginMenu("Game"))
{
if (ImGui::MenuItem("New Game", "F2"))
{
new_game();
}
if (ImGui::MenuItem("Launch Ball", nullptr, false, LaunchBallEnabled))
{
end_pause();
pb::launch_ball();
}
if (ImGui::MenuItem("Pause/ Resume Game", "F3"))
{
pause();
}
ImGui::Separator();
if (ImGui::MenuItem("High Scores...", nullptr, false, HighScoresEnabled))
{
if (!single_step)
pause();
pb::high_scores();
}
if (ImGui::MenuItem("Demo", nullptr, DemoActive))
{
end_pause();
pb::toggle_demo();
}
#ifndef __EMSCRIPTEN__
if (ImGui::MenuItem("Exit"))
{
SDL_Event event{SDL_QUIT};
SDL_PushEvent(&event);
}
#endif
ImGui::EndMenu();
}
if (ImGui::BeginMenu("Options"))
{
#ifndef __EMSCRIPTEN__
if (ImGui::MenuItem("Full Screen", "F4", options::Options.FullScreen))
{
options::toggle(Menu1::Full_Screen);
}
#endif
if (ImGui::BeginMenu("Select Players"))
{
if (ImGui::MenuItem("1 Player", nullptr, options::Options.Players == 1))
{
options::toggle(Menu1::OnePlayer);
new_game();
}
if (ImGui::MenuItem("2 Players", nullptr, options::Options.Players == 2))
{
options::toggle(Menu1::TwoPlayers);
new_game();
}
if (ImGui::MenuItem("3 Players", nullptr, options::Options.Players == 3))
{
options::toggle(Menu1::ThreePlayers);
new_game();
}
if (ImGui::MenuItem("4 Players", nullptr, options::Options.Players == 4))
{
options::toggle(Menu1::FourPlayers);
new_game();
}
ImGui::EndMenu();
}
ImGui::Separator();
if (ImGui::MenuItem("Sound", nullptr, options::Options.Sounds))
{
options::toggle(Menu1::Sounds);
}
if (ImGui::MenuItem("Music", nullptr, options::Options.Music))
{
options::toggle(Menu1::Music);
}
ImGui::Separator();
if (ImGui::MenuItem("Player Controls...", "F8"))
{
if (!single_step)
pause();
options::keyboard();
}
if (ImGui::BeginMenu("Table Resolution"))
{
char buffer[20]{};
auto maxResText = pinball::get_rc_string(fullscrn::GetMaxResolution() + 2030, 0);
if (ImGui::MenuItem(maxResText, nullptr, options::Options.Resolution == -1))
{
options::toggle(Menu1::MaximumResolution);
}
for (auto i = 0; i <= fullscrn::GetMaxResolution(); i++)
{
auto &res = fullscrn::resolution_array[i];
snprintf(buffer, sizeof buffer - 1, "%d x %d", res.ScreenWidth, res.ScreenHeight);
if (ImGui::MenuItem(buffer, nullptr, options::Options.Resolution == i))
{
options::toggle(static_cast<Menu1>(static_cast<int>(Menu1::R640x480) + i));
}
}
ImGui::EndMenu();
}
if (ImGui::BeginMenu("Graphics"))
{
if (ImGui::MenuItem("Uniform Scaling", nullptr, options::Options.UniformScaling))
{
options::toggle(Menu1::WindowUniformScale);
}
if (ImGui::MenuItem("Linear Filtering", nullptr, options::Options.LinearFiltering))
{
options::toggle(Menu1::WindowLinearFilter);
}
ImGui::DragFloat("UI Scale", &ImIO->FontGlobalScale, 0.005f, 0.8f, 5,
"%.2f", ImGuiSliderFlags_AlwaysClamp);
ImGui::Separator();
auto changed = false;
if (ImGui::MenuItem("Set Default UPS/FPS"))
{
changed = true;
options::Options.UpdatesPerSecond = options::DefUps;
options::Options.FramesPerSecond = options::DefFps;
}
if (ImGui::DragInt("UPS", &options::Options.UpdatesPerSecond, 1, options::MinUps, options::MaxUps,
"%d", ImGuiSliderFlags_AlwaysClamp))
{
changed = true;
options::Options.FramesPerSecond = std::min(options::Options.UpdatesPerSecond,
options::Options.FramesPerSecond);
}
if (ImGui::DragInt("FPS", &options::Options.FramesPerSecond, 1, options::MinFps, options::MaxFps,
"%d", ImGuiSliderFlags_AlwaysClamp))
{
changed = true;
options::Options.UpdatesPerSecond = std::max(options::Options.UpdatesPerSecond,
options::Options.FramesPerSecond);
}
if (changed)
{
UpdateFrameRate();
}
ImGui::EndMenu();
}
ImGui::EndMenu();
}
if (ImGui::BeginMenu("Help"))
{
#ifndef NDEBUG
if (ImGui::MenuItem("ImGui Demo", nullptr, ShowImGuiDemo))
{
ShowImGuiDemo ^= true;
}
if (ImGui::MenuItem("Sprite Viewer", nullptr, ShowSpriteViewer))
{
if (!ShowSpriteViewer && !single_step)
pause();
ShowSpriteViewer ^= true;
}
ImGui::Separator();
#endif
if (ImGui::MenuItem("About Pinball"))
{
if (!single_step)
pause();
ShowAboutDialog = true;
}
ImGui::EndMenu();
}
if (DispFrameRate && !FpsDetails.empty())
if (ImGui::BeginMenu(FpsDetails.c_str()))
ImGui::EndMenu();
ImGui::EndMainMenuBar();
}
a_dialog();
high_score::RenderHighScoreDialog();
if (ShowSpriteViewer)
render::SpriteViewer(&ShowSpriteViewer);
}
int winmain::event_handler(const SDL_Event *event)
{
ImGui_ImplSDL2_ProcessEvent(event);
if (ImIO->WantCaptureMouse)
{
if (mouse_down)
{
mouse_down = 0;
SDL_ShowCursor(SDL_ENABLE);
SDL_SetWindowGrab(MainWindow, SDL_FALSE);
}
switch (event->type)
{
case SDL_MOUSEMOTION:
case SDL_MOUSEBUTTONDOWN:
case SDL_MOUSEBUTTONUP:
case SDL_MOUSEWHEEL:
return 1;
default:;
}
}
if (ImIO->WantCaptureKeyboard)
{
switch (event->type)
{
case SDL_KEYDOWN:
case SDL_KEYUP:
return 1;
default:;
}
}
switch (event->type)
{
case SDL_QUIT:
end_pause();
bQuit = 1;
fullscrn::shutdown();
return_value = 0;
return 0;
case SDL_KEYUP:
pb::keyup(event->key.keysym.sym);
break;
case SDL_KEYDOWN:
if (!event->key.repeat)
pb::keydown(event->key.keysym.sym);
switch (event->key.keysym.sym)
{
case SDLK_ESCAPE:
if (options::Options.FullScreen)
options::toggle(Menu1::Full_Screen);
SDL_MinimizeWindow(MainWindow);
break;
case SDLK_F2:
new_game();
break;
case SDLK_F3:
pause();
break;
case SDLK_F4:
options::toggle(Menu1::Full_Screen);
break;
case SDLK_F5:
options::toggle(Menu1::Sounds);
break;
case SDLK_F6:
options::toggle(Menu1::Music);
break;
case SDLK_F8:
if (!single_step)
pause();
options::keyboard();
break;
default:
break;
}
if (!pb::cheat_mode)
break;
switch (event->key.keysym.sym)
{
case SDLK_g:
DispGRhistory = 1;
break;
case SDLK_y:
SDL_SetWindowTitle(MainWindow, "Pinball");
DispFrameRate = DispFrameRate == 0;
break;
case SDLK_F1:
pb::frame(10);
break;
case SDLK_F10:
single_step = single_step == 0;
if (single_step == 0)
no_time_loss = 1;
break;
default:
break;
}
break;
case SDL_MOUSEBUTTONDOWN:
switch (event->button.button)
{
case SDL_BUTTON_LEFT:
if (pb::cheat_mode)
{
mouse_down = 1;
last_mouse_x = event->button.x;
last_mouse_y = event->button.y;
SDL_ShowCursor(SDL_DISABLE);
SDL_SetWindowGrab(MainWindow, SDL_TRUE);
}
else
pb::keydown(options::Options.LeftFlipperKey);
break;
case SDL_BUTTON_RIGHT:
if (!pb::cheat_mode)
pb::keydown(options::Options.RightFlipperKey);
break;
case SDL_BUTTON_MIDDLE:
pb::keydown(options::Options.PlungerKey);
break;
default:
break;
}
break;
case SDL_MOUSEBUTTONUP:
switch (event->button.button)
{
case SDL_BUTTON_LEFT:
if (mouse_down)
{
mouse_down = 0;
SDL_ShowCursor(SDL_ENABLE);
SDL_SetWindowGrab(MainWindow, SDL_FALSE);
}
if (!pb::cheat_mode)
pb::keyup(options::Options.LeftFlipperKey);
break;
case SDL_BUTTON_RIGHT:
if (!pb::cheat_mode)
pb::keyup(options::Options.RightFlipperKey);
break;
case SDL_BUTTON_MIDDLE:
pb::keyup(options::Options.PlungerKey);
break;
default:
break;
}
break;
case SDL_WINDOWEVENT:
switch (event->window.event)
{
case SDL_WINDOWEVENT_FOCUS_GAINED:
case SDL_WINDOWEVENT_TAKE_FOCUS:
case SDL_WINDOWEVENT_SHOWN:
activated = 1;
Sound::Activate();
if (options::Options.Music && !single_step)
midi::play_pb_theme(0);
no_time_loss = 1;
has_focus = 1;
break;
case SDL_WINDOWEVENT_FOCUS_LOST:
case SDL_WINDOWEVENT_HIDDEN:
activated = 0;
fullscrn::activate(0);
options::Options.FullScreen = 0;
Sound::Deactivate();
midi::music_stop();
has_focus = 0;
pb::loose_focus();
break;
case SDL_WINDOWEVENT_SIZE_CHANGED:
case SDL_WINDOWEVENT_RESIZED:
fullscrn::window_size_changed();
break;
default:;
}
break;
default:;
}
return 1;
}
int winmain::ProcessWindowMessages()
{
SDL_Event event;
#ifndef __EMSCRIPTEN__
if (has_focus && !single_step)
{
while (SDL_PollEvent(&event))
{
if (!event_handler(&event))
return 0;
}
return 1;
}
SDL_WaitEvent(&event);
return event_handler(&event);
#else
while (SDL_PollEvent(&event))
{
if (!event_handler(&event))
return 0;
}
return 1;
#endif
}
void winmain::memalloc_failure()
{
midi::music_stop();
Sound::Close();
char *caption = pinball::get_rc_string(170, 0);
char *text = pinball::get_rc_string(179, 0);
SDL_ShowSimpleMessageBox(SDL_MESSAGEBOX_ERROR, caption, text, MainWindow);
std::exit(1);
}
void winmain::a_dialog()
{
if (ShowAboutDialog == true)
{
ShowAboutDialog = false;
ImGui::OpenPopup("About");
}
bool unused_open = true;
if (ImGui::BeginPopupModal("About", &unused_open, ImGuiWindowFlags_AlwaysAutoResize))
{
ImGui::TextUnformatted("3D Pinball for Windows - Space Cadet");
ImGui::TextUnformatted("Original game by Cinematronics, Microsoft");
ImGui::Separator();
ImGui::TextUnformatted("Decompiled -> Ported to SDL");
if (ImGui::SmallButton("Project home: https://github.com/k4zmu2a/SpaceCadetPinball"))
{
#if SDL_VERSION_ATLEAST(2, 0, 14)
// Relatively new feature, skip with older SDL
SDL_OpenURL("https://github.com/k4zmu2a/SpaceCadetPinball");
#endif
}
ImGui::Separator();
if (ImGui::Button("Ok"))
{
ImGui::CloseCurrentPopup();
}
ImGui::EndPopup();
}
}
void winmain::end_pause()
{
if (single_step)
{
pb::pause_continue();
no_time_loss = 1;
}
}
void winmain::new_game()
{
end_pause();
pb::replay_level(0);
}
void winmain::pause()
{
pb::pause_continue();
no_time_loss = 1;
}
void winmain::Restart()
{
restart = true;
SDL_Event event{SDL_QUIT};
SDL_PushEvent(&event);
}
void winmain::UpdateFrameRate()
{
// UPS >= FPS
auto fps = options::Options.FramesPerSecond, ups = options::Options.UpdatesPerSecond;
UpdateToFrameRatio = static_cast<double>(ups) / fps;
TargetFrameTime = DurationMs(1000.0 / ups);
}
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