#include <isogfx/app.h>
#include <isogfx/isogfx.h>

#include <assert.h>
#include <stdbool.h>

typedef struct IsoGfxAppState {
  int         xpick;
  int         ypick;
  SpriteSheet stag_sheet;
  Sprite      stag;
} IsoGfxAppState;

static bool init(
    IsoGfxAppState* state, IsoGfx* iso, int argc, const char** argv) {
  assert(state);
  assert(iso);
  (void)argc;
  (void)argv;

  if (!isogfx_load_world(iso, "/home/jeanne/assets/tilemaps/demo1.tm")) {
    return false;
  }

  if (!isogfx_load_sprite_sheet(
          iso, "/home/jeanne/assets/tilesets/scrabling/critters/stag/stag.ss",
          &state->stag_sheet)) {
    return false;
  }

  state->stag = isogfx_make_sprite(iso, state->stag_sheet);
  isogfx_set_sprite_position(iso, state->stag, 5, 4);

  return true;
}

static void shutdown(IsoGfxAppState* state, IsoGfx* iso) {
  assert(state);
  assert(iso);
}

static void update(IsoGfxAppState* state, IsoGfx* iso, double t, double dt) {
  assert(state);
  assert(iso);

  (void)t;
  (void)dt;

  double mouse_x, mouse_y;
  gfx_app_get_mouse_position(&mouse_x, &mouse_y);

  isogfx_pick_tile(iso, mouse_x, mouse_y, &state->xpick, &state->ypick);

  // printf("Picked tile: (%d, %d)\n", state->xpick, state->ypick);
}

static void render(IsoGfxAppState* state, IsoGfx* iso) {
  assert(state);
  assert(iso);

  isogfx_render(iso);
}

int main(int argc, const char** argv) {
  IsoGfxAppState state = {0};
  iso_run(
      argc, argv,
      &(IsoGfxApp){
          .pixel_scale = 2,
          .state       = &state,
          .init        = init,
          .shutdown    = shutdown,
          .update      = update,
          .render      = render,
      });
  return 0;
}