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;;;; protocol.lisp
(in-package #:wheelwork)
(defgeneric boot (app)
(:documentation "Specialized for each subclass of
APPLICATION. Responsble for setting the app up once the system
resoruces are avaialble."))
(defgeneric shutdown (app)
(:documentation "Specialzied for each subclass of
APPLICATION. Called just before cleanup.")
(:method ((any t)) nil))
(defgeneric cleanup (thing)
(:documentation "Clean up applications, textures, and other foreign
resources. Called after shutodown.")
(:method ((any t)) nil))
(defgeneric drop-unit (unit)
(:documentation "Removes a unit from a container."))
(defgeneric add-unit (container unit)
(:documentation "Adds a unit to a container, removing it from its
current container first, if necessary."))
(defgeneric render (thing)
(:documentation "Renders thing for visual display."))
(defgeneric model-matrix (thing)
(:documentation "Returns the model matrix for THING, representing
its position, scale, and orientation in the scene"))
(defgeneric ensure-loaded (asset)
(:documentation "Ensures that the asset is loaded into memory and
ready for use. Returns the asset."))
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