(ns advent.screens.rooms
  (:require [advent.zone :as zone]))

(defn make-entity [id entity]
  (merge entity
         {:mouse-in? (fn [entities x y]
                       (let [{entity-x :x entity-y :y width :width scale-x :scale-x scale-y :scale-y height :height region :object} (get-in entities [:room :entities id]) 
                             width (or width (.getRegionWidth region))
                             height (or height (.getRegionHeight region))]
                         ((zone/box entity-x entity-y (+ entity-x (*  width (or 1 scale-x))) (+ entity-y (* height (or scale-y 1)))) x y)))}
         (when (or (:scripts entity) (:script entity))
           {:get-script (fn [cursor [x y]]
                          (if (= :main cursor)
                            (:script entity)
                            (when-let [scripts (:scripts entity)]
                              (scripts (:value cursor)))))})))
(defn make [& {:keys [collision interactions entities] :as params}]
  (let [interactions-as-list (for [[id spec] interactions]
                               (merge spec {:mouse-in? (fn [_ x y]
                                                         ((apply zone/box (:box spec)) x y))
                                            :get-script (fn [cursor [x y]]
                                                          (if (= :main cursor)
                                                            (:script spec)
                                                            (when-let [scripts (:scripts spec)]
                                                              (scripts (:value cursor)))))
                                            :id id}))
        entities (into {} (for [[id entity] entities]
                            [id (make-entity id entity)]))]
    (merge params {:collision (advent.pathfind/map-from-resource collision)
                   :interactions interactions-as-list
                   :entities entities})))