Momentum-Apps/trexrunner.c

#include <furi.h>
#include <furi_hal.h>
#include <gui/gui.h>
#include <gui/icon_i.h>
#include <input/input.h>
#include <stdlib.h>

#include "assets_icons.h"

#define DINO_START_X 0
#define DINO_START_Y 42

#define FPS 60

#define DINO_RUNNING_TICKS 15

typedef enum {
    EventTypeTick,
    EventTypeKey,
} EventType;

typedef struct {
    EventType type;
    InputEvent input;
} PluginEvent;

typedef struct {
  FuriTimer* timer;
  const Icon* dino_icon;
  int dino_tick;
} GameState;

static void timer_callback(void* ctx) {
  GameState* game_state = acquire_mutex((ValueMutex*)ctx, 25);
  if (game_state == NULL) {
    return;
  }

  // game update
  game_state->dino_tick++;
  // TODO: switch by dino state
  if (game_state->dino_tick >= DINO_RUNNING_TICKS) {
    if (game_state->dino_icon == &I_DinoRun0) {
      game_state->dino_icon = &I_DinoRun1;
    } else {
      game_state->dino_icon = &I_DinoRun0;
    }
    game_state->dino_tick = 0;
  }

  release_mutex((ValueMutex*)ctx, game_state);
}

static void input_callback(InputEvent* input_event, FuriMessageQueue* event_queue) {
    furi_assert(event_queue);

    PluginEvent event = {.type = EventTypeKey, .input = *input_event};
    furi_message_queue_put(event_queue, &event, FuriWaitForever);
}

static void render_callback(Canvas* const canvas, void* ctx) {
  const GameState* game_state = acquire_mutex((ValueMutex*)ctx, 25);
  if (game_state == NULL) {
    return;
  }

//  canvas_draw_xbm(canvas, 0, 0, dino_width, dino_height, dino_bits);
  canvas_draw_icon(canvas, DINO_START_X, DINO_START_Y, game_state->dino_icon);

  release_mutex((ValueMutex*)ctx, game_state);
}

static void game_state_init(GameState* const game_state) {
  game_state->dino_tick = 0;
  game_state->dino_icon = &I_Dino;
}

int32_t trexrunner_app(void* p) {
  UNUSED(p);

  FuriMessageQueue* event_queue = furi_message_queue_alloc(8, sizeof(PluginEvent));

  GameState* game_state = malloc(sizeof(GameState));
  game_state_init(game_state);

  ValueMutex state_mutex;
  if (!init_mutex(&state_mutex, game_state, sizeof(game_state))) {
      FURI_LOG_E("T-rex runner", "cannot create mutex\r\n");
        free(game_state);
      return 255;
  }
  // BEGIN IMPLEMENTATION

  // Set system callbacks
  ViewPort* view_port = view_port_alloc();
  view_port_draw_callback_set(view_port, render_callback, &state_mutex);
  view_port_input_callback_set(view_port, input_callback, event_queue);
  game_state->timer = furi_timer_alloc(timer_callback, FuriTimerTypePeriodic, &state_mutex);

  furi_timer_start(game_state->timer, (uint32_t) furi_kernel_get_tick_frequency() / FPS);

  // Open GUI and register view_port
  Gui* gui = furi_record_open("gui");
  gui_add_view_port(gui, view_port, GuiLayerFullscreen);

  PluginEvent event;
  for (bool processing = true; processing;) {
    FuriStatus event_status = furi_message_queue_get(event_queue, &event, 100);
//    Minesweeper* minesweeper_state = (Minesweeper*)acquire_mutex_block(&state_mutex);
    if (event_status == FuriStatusOk) {
      // press events
      if (event.type == EventTypeKey) {
        if (event.input.type == InputTypeShort) {
          switch (event.input.key) {
          case InputKeyUp: break;
          case InputKeyDown: break;
          case InputKeyLeft: break;
          case InputKeyRight: break;
          case InputKeyOk: break;
          case InputKeyBack:
            // Exit the app
            processing = false;
            break;
          }
        }
      }
    } else {
      // event timeout
      ;
    }
    view_port_update(view_port);
    release_mutex(&state_mutex, game_state);
  }

  view_port_enabled_set(view_port, false);
  gui_remove_view_port(gui, view_port);
  furi_record_close("gui");
  view_port_free(view_port);
  furi_message_queue_free(event_queue);
  delete_mutex(&state_mutex);
  furi_timer_free(game_state->timer);
  free(game_state);

  return 0;
}