//  SuperTux
//  Copyright (C) 2018 Ingo Ruhnke <grumbel@gmail.com>
//
//  This program is free software: you can redistribute it and/or modify
//  it under the terms of the GNU General Public License as published by
//  the Free Software Foundation, either version 3 of the License, or
//  (at your option) any later version.
//
//  This program is distributed in the hope that it will be useful,
//  but WITHOUT ANY WARRANTY; without even the implied warranty of
//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//  GNU General Public License for more details.
//
//  You should have received a copy of the GNU General Public License
//  along with this program.  If not, see <http://www.gnu.org/licenses/>.

#include "supertux/player_status_hud.hpp"

#include <sstream>

#include "supertux/game_object.hpp"
#include "supertux/player_status.hpp"
#include "supertux/resources.hpp"
#include "video/drawing_context.hpp"
#include "video/surface.hpp"

static const int DISPLAYED_COINS_UNSET = -1;

PlayerStatusHUD::PlayerStatusHUD(PlayerStatus& player_status) :
  m_player_status(player_status),
  displayed_coins(DISPLAYED_COINS_UNSET),
  displayed_coins_frame(0),
  coin_surface(Surface::from_file("images/engine/hud/coins-0.png")),
  fire_surface(Surface::from_file("images/objects/bullets/fire-hud.png")),
  ice_surface(Surface::from_file("images/objects/bullets/ice-hud.png"))
{
}

void
PlayerStatusHUD::reset()
{
  displayed_coins = DISPLAYED_COINS_UNSET;
}

void
PlayerStatusHUD::update(float dt_sec)
{
}

void
PlayerStatusHUD::draw(DrawingContext& context)
{
  int player_id = 0;

  if ((displayed_coins == DISPLAYED_COINS_UNSET) ||
      (std::abs(displayed_coins - m_player_status.coins) > 100)) {
    displayed_coins = m_player_status.coins;
    displayed_coins_frame = 0;
  }
  if (++displayed_coins_frame > 2) {
    displayed_coins_frame = 0;
    if (displayed_coins < m_player_status.coins) displayed_coins++;
    if (displayed_coins > m_player_status.coins) displayed_coins--;
  }
  displayed_coins = std::min(std::max(displayed_coins, 0), m_player_status.get_max_coins());

  std::ostringstream ss;
  ss << displayed_coins;
  std::string coins_text = ss.str();

  context.push_transform();
  context.set_translation(Vector(0, 0));

  if (coin_surface)
  {
    context.color().draw_surface(coin_surface,
                                 Vector(static_cast<float>(context.get_width()) - BORDER_X - static_cast<float>(coin_surface->get_width()) - Resources::fixed_font->get_text_width(coins_text),
                                        BORDER_Y + 1.0f + (Resources::fixed_font->get_text_height(coins_text) + 5) * static_cast<float>(player_id)),
                                 LAYER_HUD);
  }

  context.color().draw_text(Resources::fixed_font,
                            coins_text,
                            Vector(static_cast<float>(context.get_width()) - BORDER_X - Resources::fixed_font->get_text_width(coins_text),
                                   BORDER_Y + (Resources::fixed_font->get_text_height(coins_text) + 5.0f) * static_cast<float>(player_id)),
                            ALIGN_LEFT,
                            LAYER_HUD,
                            PlayerStatusHUD::text_color);

  std::string ammo_text;

  if (m_player_status.bonus == FIRE_BONUS) {

    ammo_text = std::to_string(m_player_status.max_fire_bullets);

    if (fire_surface) {
      context.color().draw_surface(fire_surface,
                                   Vector(static_cast<float>(context.get_width())
                                              - BORDER_X
                                              - static_cast<float>(fire_surface->get_width())
                                              - Resources::fixed_font->get_text_width(ammo_text),
                                          BORDER_Y
                                              + 1.0f
                                              + (Resources::fixed_font->get_text_height(coins_text) + 5)
                                              + (Resources::fixed_font->get_text_height(ammo_text) + 5)
                                              * static_cast<float>(player_id)),
                                   LAYER_HUD);
    }

    context.color().draw_text(Resources::fixed_font,
                              ammo_text,
                              Vector(static_cast<float>(context.get_width())
                                         - BORDER_X
                                         - Resources::fixed_font->get_text_width(ammo_text),
                                     BORDER_Y
                                         + (Resources::fixed_font->get_text_height(coins_text) + 5.0f)
                                         + (Resources::fixed_font->get_text_height(ammo_text) + 5.0f)
                                         * static_cast<float>(player_id)),
                              ALIGN_LEFT,
                              LAYER_HUD,
                              PlayerStatusHUD::text_color);
  }

  if (m_player_status.bonus == ICE_BONUS) {

    ammo_text = std::to_string(m_player_status.max_ice_bullets);

    if (ice_surface) {
      context.color().draw_surface(ice_surface,
                                   Vector(static_cast<float>(context.get_width())
                                              - BORDER_X
                                              - static_cast<float>(ice_surface->get_width())
                                              - Resources::fixed_font->get_text_width(ammo_text),
                                          BORDER_Y
                                              + 1.0f
                                              + (Resources::fixed_font->get_text_height(coins_text) + 5)
                                              + (Resources::fixed_font->get_text_height(ammo_text) + 5)
                                              * static_cast<float>(player_id)),
                                   LAYER_HUD);
    }

    context.color().draw_text(Resources::fixed_font,
                              ammo_text,
                              Vector(static_cast<float>(context.get_width())
                                         - BORDER_X
                                         - Resources::fixed_font->get_text_width(ammo_text),
                                     BORDER_Y
                                         + (Resources::fixed_font->get_text_height(coins_text) + 5.0f)
                                         + (Resources::fixed_font->get_text_height(ammo_text) + 5.0f)
                                         * static_cast<float>(player_id)),
                              ALIGN_LEFT,
                              LAYER_HUD,
                              PlayerStatusHUD::text_color);
  }


  context.pop_transform();
}

/* EOF */
