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#|
This file is a part of trial
(c) 2017 Shirakumo http://tymoon.eu (shinmera@tymoon.eu)
Author: Nicolas Hafner <shinmera@tymoon.eu>
|#
(in-package #:org.shirakumo.fraf.trial)
(defclass asset (resource)
((pool :initform NIL :accessor pool)
(name :initform NIL :accessor name)
(input :initarg :input :accessor input)))
(defmethod initialize-instance :after ((asset asset) &key pool name)
(check-type name symbol)
(setf (name asset) name)
(setf (pool asset) (etypecase pool
(null (error "POOL required."))
(symbol (find-pool pool T))
(pool pool)))
(setf (asset pool name) asset))
(defmethod reinitialize-instance :after ((asset asset) &key)
(when (allocated-p asset)
(reload asset)))
(defmethod update-instance-for-different-class :around ((previous asset) (current asset) &key)
;; FIXME: Error recovery?
(cond ((allocated-p current)
(deallocate current)
(call-next-method)
(load current))
(T
(call-next-method))))
(defmethod print-object ((asset asset) stream)
(print-unreadable-object (asset stream :type T)
(format stream "~a/~a" (name (pool asset)) (name asset))))
(defgeneric load (asset))
(defgeneric reload (asset))
(defmethod reload ((asset asset))
(deallocate asset)
(load asset))
(defmethod load :around ((asset asset))
(unless (allocated-p asset)
(v:trace :trial.asset "Loading ~a/~a" (name (pool asset)) (name asset))
(call-next-method)))
(defmethod deallocate :around ((asset asset))
(when (allocated-p asset)
(v:trace :trial.asset "Deallocating ~a/~a" (name (pool asset)) (name asset))
(call-next-method)))
(defmethod coerce-asset-input ((asset asset) (input (eql T)))
(coerce-asset-input asset (input asset)))
(defmethod coerce-asset-input ((asset asset) thing)
thing)
(defmethod coerce-asset-input ((asset asset) (path pathname))
(pool-path (pool asset) path))
(defmethod coerce-asset-input ((asset asset) (list list))
(loop for item in list collect (coerce-asset-input asset item)))
(defmacro define-asset ((pool name) type input &rest options)
(check-type pool symbol)
(check-type name symbol)
(check-type type symbol)
`(let ((,name (asset ',pool ',name NIL)))
(cond ((and ,name (eql (type-of ,name) ',type))
(reinitialize-instance ,name ,@options :input ,input))
(,name
(change-class ,name ',type ,@options :input ,input))
(T
(make-instance ',type ,@options :input ,input :name ',name :pool ',pool)))))
(trivial-indent:define-indentation define-asset (4 6 4 &body))
(defclass gl-asset (asset gl-resource) ())
(defmethod load :around ((asset gl-asset))
(with-context (*context*)
(call-next-method)))
(defmethod deallocate :around ((asset gl-asset))
(with-context (*context*)
(call-next-method)))
(defmethod reload :around ((asset gl-asset))
(with-context (*context*)
(call-next-method)))