#include "core/rendering/sprite/moving_sprite.hpp"

#include <utility>

#include "core/rendering/surface.hpp"

MovingSprite::MovingSprite() { Sprite::clear(); }

MovingSprite::MovingSprite(std::shared_ptr<Surface> surface)
    : Sprite(std::move(surface)) { Sprite::clear(); }

// pos_ ja queda inicialitzat pel ctor delegat Sprite(surface, pos); només
// cal sincronitzar la posició float x_/y_ (i el flip si ve).
MovingSprite::MovingSprite(std::shared_ptr<Surface> surface, SDL_FRect pos)
    : Sprite(std::move(surface), pos),
      x_(pos.x),
      y_(pos.y) {}

MovingSprite::MovingSprite(std::shared_ptr<Surface> surface, SDL_FRect pos, SDL_FlipMode flip)
    : Sprite(std::move(surface), pos),
      x_(pos.x),
      y_(pos.y),
      flip_(flip) {}

void MovingSprite::clear() {
    x_ = 0.0F;
    y_ = 0.0F;
    vx_ = 0.0F;
    vy_ = 0.0F;
    ax_ = 0.0F;
    ay_ = 0.0F;
    flip_ = SDL_FLIP_NONE;
    Sprite::clear();
}

void MovingSprite::move(float delta_time) {
    vx_ += ax_ * delta_time;
    vy_ += ay_ * delta_time;
    x_ += vx_ * delta_time;
    y_ += vy_ * delta_time;
    pos_.x = static_cast<int>(x_);
    pos_.y = static_cast<int>(y_);
}

void MovingSprite::update(float delta_time) {
    move(delta_time);
}

void MovingSprite::render() {
    surface_->render(static_cast<int>(pos_.x), static_cast<int>(pos_.y), &clip_, flip_);
}

void MovingSprite::setPos(SDL_FRect rect) {
    x_ = rect.x;
    y_ = rect.y;
    pos_ = rect;
}

void MovingSprite::setPos(float x, float y) {
    x_ = x;
    y_ = y;
    pos_.x = static_cast<int>(x_);
    pos_.y = static_cast<int>(y_);
}

void MovingSprite::setPosX(float value) {
    x_ = value;
    pos_.x = static_cast<int>(x_);
}

void MovingSprite::setPosY(float value) {
    y_ = value;
    pos_.y = static_cast<int>(y_);
}

void MovingSprite::tryMove(float dx, float dy, const CollisionFn& collides) {
    const float OLD_X = getPosX();
    setPosX(OLD_X + dx);
    if (collides(collisionBox())) { setPosX(OLD_X); }
    const float OLD_Y = getPosY();
    setPosY(OLD_Y + dy);
    if (collides(collisionBox())) { setPosY(OLD_Y); }
}