SWDB/application/entity/Buildable.php

<?php
    /**
     * Buildable key entity file.
     *
     * Creates the entity and makes it available.
     *
     * @category Entity
     */

    /**
     * Require dependent entities if not present.
     */
    require_once(PATH::ENTITY . "Entity.php");


    /**
     * Buildable.
     *
     * Represents an object from the table 'buildable'.
     *
     * @category Entity
     */
    class Buildable extends Entity{

        /**
         * @var int Buildable identifier.
         */
        public $id;

        /**
         * @var string Buildable name.
         */
        public $name;

        /**
         * @var string Buildable description.
         */
        public $description;

        /**
         * Constructor.
         *
         * Searches the database and retrieves the information about the
         * building, populating it and it's items.
         *
         * @param int $id Buildable identifier.
         */
        public function __construct($id){

            $statement = get_context()->get_db()->prepare("
              SELECT
                id,
                name,
                description
              FROM buildable
               WHERE id = :id;
            ");
            $statement->bindValue(':id', $id, SQLITE3_TEXT);
            $r = $statement->execute()->fetchArray(SQLITE3_ASSOC);
            if ($r){
                $this->id = $r["id"];
                $this->name = HTML::e($r["name"]);
                $this->description = HTML::e($r["description"]);
            }
        }

        /**
         * Gets the path to the building image. The image must be in the
         * img/building/ directory, and its name must be the monster id,
         * padded with '0' to 4 digites, and the extension must be '.png'.
         *
         * @return string Image URL, or a fixed unknown image.
         */
        public function get_image(){
            return APPLICATION::img("BUILDING", $this->id);
        }

    }
?>