#include "racket.h"

Racket*
Racket_init(int screen_width, int screen_height, int posX, int posY, SDL_Keycode up, SDL_Keycode down)
{
  Racket *r = malloc(sizeof(Racket));
  *(int *)&r->RACKET_WIDTH = 20;
  *(int *)&r->RACKET_HEIGHT = 100;
  *(int *)&r->RACKET_VELOCITY = 10;
  *(int *)&r->SCREEN_WIDTH = screen_width;
  *(int *)&r->SCREEN_HEIGHT = screen_height;
  *(int *)&r->posX = posX;
  r->posY = posY;
  *(int *)&r->vel = 5;
  r->score = 0;
  *(SDL_Keycode *)&r->up = up;
  *(SDL_Keycode *)&r->down = down;
  r->updown = 0;
  return r;
}

void
Racket_free(Racket *r)
{
  free(r);
}

int
Racket_render(const Racket *r, SDL_Renderer *renderer) {
  SDL_Rect rect = { r->posX, r->posY, r->RACKET_WIDTH, r->RACKET_HEIGHT };
  if (SDL_SetRenderDrawColor(renderer, 255, 255, 255, 255) < 0) {
    printf("SDL_SetRenderDrawColor failed! SDL_Error: %s\n", SDL_GetError());
    return 1;
  }
  SDL_RenderFillRect(renderer, &rect);
  return 0;
}

void
Racket_handle_event(Racket *r, const Uint8 *keystate) {
  if (keystate[r->up]) r->updown = -1;
  else if (keystate[r->down]) r->updown = 1;
  else r->updown = 0;
}

void
Racket_move(Racket *r) {
  r->posY += r->updown * r->vel;
  if ((r->posY < 0) || (r->posY + r->RACKET_HEIGHT > r->SCREEN_HEIGHT))
  {
        r->posY -= r->updown * r->vel;
  }
  r->updown = 0;
}