void ImGui_ImplAllegro5_Shutdown()
{
ImGui_ImplAllegro5_InvalidateDeviceObjects();
g_Display = NULL;
g_Time = 0.0;
if (g_VertexDecl)
al_destroy_vertex_decl(g_VertexDecl);
g_VertexDecl = NULL;
if (g_ClipboardTextData)
al_free(g_ClipboardTextData);
g_ClipboardTextData = NULL;
}
int main(int, char**)
{
// Setup Allegro
al_init();
al_install_keyboard();
al_install_mouse();
al_init_primitives_addon();
al_set_new_display_flags(ALLEGRO_RESIZABLE);
ALLEGRO_DISPLAY* display = al_create_display(1280, 720);
al_set_window_title(display, "Dear ImGui Allegro 5 example");
ALLEGRO_EVENT_QUEUE* queue = al_create_event_queue();
al_register_event_source(queue, al_get_display_event_source(display));
al_register_event_source(queue, al_get_keyboard_event_source());
al_register_event_source(queue, al_get_mouse_event_source());
// Setup Dear ImGui binding
IMGUI_CHECKVERSION();
ImGui::CreateContext();
ImGuiIO& io = ImGui::GetIO(); (void)io;
//io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard; // Enable Keyboard Controls
ImGui_ImplAllegro5_Init(display);
// Setup style
ImGui::StyleColorsDark();
//ImGui::StyleColorsClassic();
// Load Fonts
// - If no fonts are loaded, dear imgui will use the default font. You can also load multiple fonts and use ImGui::PushFont()/PopFont() to select them.
// - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
// - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
// - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
// - Read 'misc/fonts/README.txt' for more instructions and details.
// - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ !
//io.Fonts->AddFontDefault();
//io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf", 16.0f);
//io.Fonts->AddFontFromFileTTF("../../misc/fonts/Cousine-Regular.ttf", 15.0f);
//io.Fonts->AddFontFromFileTTF("../../misc/fonts/DroidSans.ttf", 16.0f);
//io.Fonts->AddFontFromFileTTF("../../misc/fonts/ProggyTiny.ttf", 10.0f);
//ImFont* font = io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
//IM_ASSERT(font != NULL);
bool show_demo_window = true;
bool show_another_window = false;
ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
// Main loop
bool running = true;
while (running)
{
// Poll and handle events (inputs, window resize, etc.)
// You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs.
// - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application.
// - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application.
// Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
ALLEGRO_EVENT ev;
while (al_get_next_event(queue, &ev))
{
ImGui_ImplAllegro5_ProcessEvent(&ev);
if (ev.type == ALLEGRO_EVENT_DISPLAY_CLOSE)
running = false;
if (ev.type == ALLEGRO_EVENT_DISPLAY_RESIZE)
{
ImGui_ImplAllegro5_InvalidateDeviceObjects();
al_acknowledge_resize(display);
ImGui_ImplAllegro5_CreateDeviceObjects();
}
}
// Start the Dear ImGui frame
ImGui_ImplAllegro5_NewFrame();
ImGui::NewFrame();
// 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
if (show_demo_window)
ImGui::ShowDemoWindow(&show_demo_window);
// 2. Show a simple window that we create ourselves. We use a Begin/End pair to created a named window.
{
static float f = 0.0f;
static int counter = 0;
ImGui::Begin("Hello, world!"); // Create a window called "Hello, world!" and append into it.
ImGui::Text("This is some useful text."); // Display some text (you can use a format strings too)
ImGui::Checkbox("Demo Window", &show_demo_window); // Edit bools storing our window open/close state
ImGui::Checkbox("Another Window", &show_another_window);
ImGui::SliderFloat("float", &f, 0.0f, 1.0f); // Edit 1 float using a slider from 0.0f to 1.0f
ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
if (ImGui::Button("Button")) // Buttons return true when clicked (most widgets return true when edited/activated)
counter++;
ImGui::SameLine();
ImGui::Text("counter = %d", counter);
ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
ImGui::End();
}
// 3. Show another simple window.
if (show_another_window)
{
ImGui::Begin("Another Window", &show_another_window); // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
ImGui::Text("Hello from another window!");
if (ImGui::Button("Close Me"))
show_another_window = false;
ImGui::End();
}
// Rendering
ImGui::Render();
al_clear_to_color(al_map_rgba_f(clear_color.x, clear_color.y, clear_color.z, clear_color.w));
ImGui_ImplAllegro5_RenderDrawData(ImGui::GetDrawData());
al_flip_display();
}
// Cleanup
ImGui_ImplAllegro5_Shutdown();
ImGui::DestroyContext();
al_destroy_event_queue(queue);
al_destroy_display(display);
return 0;
}
static inline void HandleEvent(struct Game* game, ALLEGRO_EVENT* ev) {
switch (ev->type) {
case ALLEGRO_EVENT_DISPLAY_HALT_DRAWING:
PauseExecution(game);
al_acknowledge_drawing_halt(game->display);
break;
case ALLEGRO_EVENT_DISPLAY_RESUME_DRAWING:
al_acknowledge_drawing_resume(game->display);
ReloadGamestates(game);
ResumeExecution(game);
break;
case ALLEGRO_EVENT_DISPLAY_SWITCH_OUT:
if (game->config.autopause) {
PrintConsole(game, "Focus lost, autopausing...");
PauseExecution(game);
}
break;
case ALLEGRO_EVENT_DISPLAY_SWITCH_IN:
if (game->config.autopause) {
if (game->config.debug.enabled && game->config.debug.livereload) {
ReloadCode(game);
}
ResumeExecution(game);
}
break;
case ALLEGRO_EVENT_DISPLAY_RESIZE:
PrintConsole(game, "Resize event: %dx%d", ev->display.width, ev->display.height);
#ifdef LIBSUPERDERPY_IMGUI
ImGui_ImplAllegro5_InvalidateDeviceObjects();
#endif
al_acknowledge_resize(game->display);
#ifdef LIBSUPERDERPY_IMGUI
ImGui_ImplAllegro5_CreateDeviceObjects();
#endif
// SetupViewport can be expensive, so don't do it when the resize event is already outdated or doesn't change anything
if (((ev->display.width != game->_priv.window_width) || (ev->display.height != game->_priv.window_height)) &&
(ev->display.width == al_get_display_width(game->display)) && (ev->display.height == al_get_display_height(game->display))) {
SetupViewport(game);
}
break;
case ALLEGRO_EVENT_KEY_DOWN:
#ifdef ALLEGRO_ANDROID
if ((ev->keyboard.keycode == ALLEGRO_KEY_MENU) || (ev->keyboard.keycode == ALLEGRO_KEY_TILDE) || (ev->keyboard.keycode == ALLEGRO_KEY_BACKQUOTE)) {
#else
if ((ev->keyboard.keycode == ALLEGRO_KEY_TILDE) || (ev->keyboard.keycode == ALLEGRO_KEY_BACKQUOTE)) {
#endif
game->_priv.showconsole = !game->_priv.showconsole;
if ((ev->keyboard.modifiers & ALLEGRO_KEYMOD_CTRL) && (game->config.debug.enabled)) {
game->_priv.showtimeline = game->_priv.showconsole;
}
}
if (ev->keyboard.keycode == ALLEGRO_KEY_F12) {
DrawGamestates(game);
int flags = al_get_new_bitmap_flags();
al_set_new_bitmap_flags(ALLEGRO_MEMORY_BITMAP);
ALLEGRO_BITMAP* bitmap = al_create_bitmap(al_get_display_width(game->display), al_get_display_height(game->display));
al_set_new_bitmap_flags(flags);
ALLEGRO_BITMAP* target = al_get_target_bitmap();
al_set_target_bitmap(bitmap);
al_draw_bitmap(al_get_backbuffer(game->display), 0, 0, 0);
al_set_target_bitmap(target);
PrintConsole(game, "Screenshot made! Storing...");
struct ScreenshotThreadData* data = malloc(sizeof(struct ScreenshotThreadData));
data->game = game;
data->bitmap = bitmap;
#ifndef LIBSUPERDERPY_SINGLE_THREAD
al_run_detached_thread(ScreenshotThread, data);
#else
ScreenshotThread(data);
#endif
}
break;
default:
break;
}
#ifdef MAEMO5
// on Maemo we get mouse events instead of touch ones, so we'll rewrite them by ourselves
if ((ev->type == ALLEGRO_EVENT_MOUSE_AXES) || (ev->type == ALLEGRO_EVENT_MOUSE_BUTTON_DOWN) || (ev->type == ALLEGRO_EVENT_MOUSE_BUTTON_UP)) {
switch (ev->type) {
case ALLEGRO_EVENT_MOUSE_BUTTON_DOWN:
ev->type = ALLEGRO_EVENT_TOUCH_BEGIN;
break;
case ALLEGRO_EVENT_MOUSE_BUTTON_UP:
ev->type = ALLEGRO_EVENT_TOUCH_END;
break;
case ALLEGRO_EVENT_MOUSE_AXES:
ev->type = ALLEGRO_EVENT_TOUCH_MOVE;
break;
default:
break;
}
ALLEGRO_DISPLAY* display = ev->mouse.display;
float dx = ev->mouse.dx;
float dy = ev->mouse.dy;
float x = ev->mouse.x;
float y = ev->mouse.y;
double timestamp = ev->mouse.timestamp;
ev->touch.display = display;
ev->touch.dx = dx;
ev->touch.dy = dy;
ev->touch.id = 0;
ev->touch.primary = true;
ev->touch.source = (ALLEGRO_TOUCH_INPUT*)al_get_touch_input_event_source();
ev->touch.timestamp = timestamp;
ev->touch.x = x;
ev->touch.y = y;
}
#endif
}
static inline void HandleDebugEvent(struct Game* game, ALLEGRO_EVENT* ev) {
switch (ev->type) {
case ALLEGRO_EVENT_KEY_DOWN:
switch (ev->keyboard.keycode) {
case ALLEGRO_KEY_F1:
if (!game->_priv.paused) {
PauseExecution(game);
} else {
ReloadCode(game);
ResumeExecution(game);
}
break;
case ALLEGRO_KEY_F9:
game->_priv.speed = ALLEGRO_BPS_TO_SECS(60.0);
game->_priv.showconsole = true;
PrintConsole(game, "DEBUG: Gameplay speed: 1.00x");
break;
case ALLEGRO_KEY_F10: {
double speed = ALLEGRO_BPS_TO_SECS(game->_priv.speed); // inverting
speed -= 10;
if (speed < 10) { speed = 10; }
game->_priv.speed = ALLEGRO_BPS_TO_SECS(speed);
game->_priv.showconsole = true;
PrintConsole(game, "DEBUG: Gameplay speed: %.2fx", speed / 60.0);
} break;
case ALLEGRO_KEY_F11: {
double speed = ALLEGRO_BPS_TO_SECS(game->_priv.speed); // inverting
speed += 10;
if (speed > 600) { speed = 600; }
game->_priv.speed = ALLEGRO_BPS_TO_SECS(speed);
game->_priv.showconsole = true;
PrintConsole(game, "DEBUG: Gameplay speed: %.2fx", speed / 60.0);
} break;
}
break;
default:
break;
}
}
static inline bool MainloopEvents(struct Game* game) {
do {
ALLEGRO_EVENT ev;
if (game->_priv.paused && !IS_EMSCRIPTEN) {
// there's no frame flipping when paused, so avoid pointless busylooping
al_wait_for_event(game->_priv.event_queue, &ev);
} else if (!al_get_next_event(game->_priv.event_queue, &ev)) {
break;
}
#ifdef LIBSUPERDERPY_IMGUI
ImGui_ImplAllegro5_ProcessEvent(&ev);
switch (ev.type) {
case ALLEGRO_EVENT_KEY_CHAR:
case ALLEGRO_EVENT_KEY_DOWN:
case ALLEGRO_EVENT_KEY_UP:
if (igGetIO()->WantCaptureKeyboard) {
continue;
}
break;
case ALLEGRO_EVENT_MOUSE_AXES:
case ALLEGRO_EVENT_MOUSE_BUTTON_DOWN:
case ALLEGRO_EVENT_MOUSE_BUTTON_UP:
case ALLEGRO_EVENT_TOUCH_BEGIN:
case ALLEGRO_EVENT_TOUCH_CANCEL:
case ALLEGRO_EVENT_TOUCH_END:
case ALLEGRO_EVENT_TOUCH_MOVE:
if (igGetIO()->WantCaptureMouse) {
continue;
}
break;
default:
break;
}
#endif
if (game->_priv.params.handlers.event) {
if ((*game->_priv.params.handlers.event)(game, &ev)) {
continue;
}
}
if (ev.type == ALLEGRO_EVENT_DISPLAY_CLOSE) {
EventGamestates(game, &ev);
return false;
}
HandleEvent(game, &ev);
if (game->config.debug.enabled) {
HandleDebugEvent(game, &ev);
}
EventGamestates(game, &ev);
} while (!al_is_event_queue_empty(game->_priv.event_queue));
return true;
}
static inline bool MainloopTick(struct Game* game) {
if (game->_priv.paused) {
return true;
}
struct Gamestate* tmp = game->_priv.gamestates;
#ifdef __EMSCRIPTEN__
emscripten_pause_main_loop();
#endif
game->_priv.loading.to_load = 0;
game->_priv.loading.loaded = 0;
game->_priv.loading.lock = true;
game->loading.progress = 0;
// TODO: support gamestate dependences/ordering
while (tmp) {
if (tmp->pending_stop) {
PrintConsole(game, "Stopping gamestate \"%s\"...", tmp->name);
game->_priv.current_gamestate = tmp;
(*tmp->api->stop)(game, tmp->data);
tmp->started = false;
tmp->pending_stop = false;
PrintConsole(game, "Gamestate \"%s\" stopped successfully.", tmp->name);
}
if (tmp->pending_load) { game->_priv.loading.to_load++; }
tmp = tmp->next;
}
tmp = game->_priv.gamestates;
while (tmp) {
if (tmp->pending_unload) {
#ifdef __EMSCRIPTEN__
al_detach_voice(game->audio.v);
#endif
PrintConsole(game, "Unloading gamestate \"%s\"...", tmp->name);
tmp->loaded = false;
tmp->pending_unload = false;
game->_priv.current_gamestate = tmp;
(*tmp->api->unload)(game, tmp->data);
PrintConsole(game, "Gamestate \"%s\" unloaded successfully.", tmp->name);
#ifdef __EMSCRIPTEN__
al_attach_mixer_to_voice(game->audio.mixer, game->audio.v);
#endif
}
if (tmp->pending_load) {
#ifdef __EMSCRIPTEN__
al_detach_voice(game->audio.v);
#endif
if (tmp->show_loading && game->_priv.loading.gamestate->open) {
(*game->_priv.loading.gamestate->api->start)(game, game->_priv.loading.gamestate->data);
}
if (!tmp->api) {
if (!OpenGamestate(game, tmp, true) || !LinkGamestate(game, tmp)) {
tmp->pending_load = false;
tmp->pending_start = false;
continue;
}
}
if (tmp->api) {
PrintConsole(game, "Loading gamestate \"%s\"...", tmp->name);
game->_priv.loading.progress = 0;
game->_priv.loading.current = tmp;
game->_priv.current_gamestate = tmp;
struct GamestateLoadingThreadData data = {.game = game, .gamestate = tmp, .bitmap_flags = al_get_new_bitmap_flags()};
game->_priv.loading.in_progress = true;
double time = al_get_time();
game->_priv.loading.time = time;
CalculateProgress(game);
if (tmp->show_loading) {
game->loading.shown = true;
DrawGamestates(game);
DrawConsole(game);
al_flip_display();
#ifdef __EMSCRIPTEN__
emscripten_sleep(0);
#endif
}
#ifndef LIBSUPERDERPY_SINGLE_THREAD
al_run_detached_thread(GamestateLoadingThread, &data);
while (game->_priv.loading.in_progress) {
double delta = al_get_time() - game->_priv.loading.time;
game->time += delta; // TODO: ability to disable passing time during loading
game->_priv.loading.time += delta;
if (game->loading.shown && game->_priv.loading.gamestate->open) {
(*game->_priv.loading.gamestate->api->logic)(game, game->_priv.loading.gamestate->data, delta);
}
DrawGamestates(game);
if (game->_priv.texture_sync) {
al_convert_memory_bitmaps();
game->_priv.texture_sync = false;
al_signal_cond(game->_priv.texture_sync_cond);
game->_priv.loading.time = al_get_time(); // TODO: rethink time management during loading
}
DrawConsole(game);
al_flip_display();
if (game->_priv.bsod_sync) {
al_set_target_bitmap(NULL);
game->_priv.bsod_sync = false;
al_signal_cond(game->_priv.bsod_cond);
}
al_lock_mutex(game->_priv.bsod_mutex);
while (game->_priv.in_bsod) {
al_wait_cond(game->_priv.bsod_cond, game->_priv.bsod_mutex);
}
al_unlock_mutex(game->_priv.bsod_mutex);
}
#else
GamestateLoadingThread(&data);
DrawGamestates(game);
DrawConsole(game);
al_flip_display();
#ifdef __EMSCRIPTEN__
emscripten_sleep(0);
#endif
al_convert_memory_bitmaps();
#endif
al_set_new_bitmap_flags(data.bitmap_flags);
ReloadShaders(game, false);
if (tmp->api->post_load) {
PrintConsole(game, "[%s] Post-loading...", tmp->name);
tmp->api->post_load(game, tmp->data);
}
game->_priv.loading.progress++;
CalculateProgress(game);
PrintConsole(game, "Gamestate \"%s\" loaded successfully in %f seconds.", tmp->name, al_get_time() - time);
game->_priv.loading.loaded++;
DrawGamestates(game);
DrawConsole(game);
al_flip_display();
#ifdef __EMSCRIPTEN__
emscripten_sleep(0);
#endif
tmp->loaded = true;
tmp->pending_load = false;
}
if (tmp->show_loading && game->_priv.loading.gamestate->open) {
(*game->_priv.loading.gamestate->api->stop)(game, game->_priv.loading.gamestate->data);
}
tmp->show_loading = true;
game->loading.shown = false;
game->_priv.timestamp = al_get_time();
#ifdef __EMSCRIPTEN__
al_attach_mixer_to_voice(game->audio.mixer, game->audio.v);
#endif
}
tmp = tmp->next;
}
