#include "viewer.hpp"

Viewer::Viewer() {
    world_.reset(new World);
    world_->init_standalone();
}

Viewer::~Viewer() {
}

int64_t Viewer::get_player_id() {
    return 1;
}


void Viewer::update_view() {
    // Get ready to delete views that aren't in use.
    //
    for (auto pair : anim_view_) {
        pair.second.set_updated(false);
    }

    // Update the player's AnimView first.
    //
    Tangible *player = world_->tangible_get(1);
    AnimView *player_view = &anim_view_[1];
    player_view->update_from(player->anim_queue_);

    // Find out where's the center of the world.
    //
    std::string plane = player_view->get_plane();
    util::XYZ xyz = player_view->get_xyz();

    // Get a list of everything near the player.
    //
    tangibles_ = world_->scan_radius(plane, xyz.x, xyz.y, 100.0);

    // Update AnimViews for every tangible near the player.
    //
    for (int64_t id : tangibles_) {
        Tangible *tan = world_->tangible_get(id);
        assert (tan != nullptr);
        anim_view_[id].update_from(tan->anim_queue_);
    }

    // Delete any AnimView that was not updated.
    //
    for (auto iter = anim_view_.begin(); iter != anim_view_.end(); ) {
        if (iter->second.updated()) {
            iter++;
        } else {
            iter = anim_view_.erase(iter);
        }
    }
}

const std::vector<int64_t> &Viewer::get_tangibles_near_player() {
    return tangibles_;
}

AnimView *Viewer::get_animation_view(int64_t id) {
    auto iter = anim_view_.find(id);
    if (iter == anim_view_.end()) {
        return nullptr;
    } else {
        return &iter->second;
    }
}

// Get the menu of the specified tangible.
//
std::vector<std::string> Viewer::get_menu(int64_t id) {
    std::vector<std::string> result;
    result.push_back("north");
    result.push_back("south");
    result.push_back("east");
    result.push_back("west");
    result.push_back("build");
    result.push_back("destroy");
    return result;
}

void Viewer::choose_menu_item(int64_t id, const std::string &item) {
}

void Viewer::advance_clock() {
};