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;;; Copyright © 2022 David Thompson <davet@gnu.org>
;;;
;;; This program is free software: you can redistribute it and/or
;;; modify it under the terms of the GNU General Public License as
;;; published by the Free Software Foundation, either version 3 of the
;;; License, or (at your option) any later version.
;;;
;;; This program is distributed in the hope that it will be useful,
;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
;;; General Public License for more details.
;;;
;;; You should have received a copy of the GNU General Public License
;;; along with this program. If not, see
;;; <http://www.gnu.org/licenses/>.
(define-module (apple-town-fair light-overlay)
#:use-module (apple-town-fair common)
#:use-module (apple-town-fair config)
#:use-module (catbird node)
#:use-module (catbird node-2d)
#:use-module (chickadee graphics color)
#:use-module (oop goops)
#:export (<light-overlay>))
;; A simple translucent color to overlay on the scene to poorly but
;; adequately simulate the time of day.
(define-class <light-overlay> (<node-2d>)
(time #:accessor time #:init-keyword #:time #:init-value 6 #:observe? #t))
(define-method (default-width (light <light-overlay>))
%game-width)
(define-method (default-height (light <light-overlay>))
%game-height)
(define-method (on-boot (light <light-overlay>))
(attach-to light
(make <canvas>
#:name 'overlay))
(refresh light))
(define-method (on-change (light <light-overlay>) slot old new)
(refresh light))
(define-method (overlay-color (light <light-overlay>))
(let ((t (time light)))
(cond
((= t 6)
(make-color 0.0 0.0 0.0 0.5))
((= t 7)
(make-color 0.0 0.0 0.0 0.3))
((= t 8)
(make-color 0.0 0.0 0.0 0.1))
((= t 9)
(make-color 0.0 0.0 0.0 0.0))
((= t 10)
(make-color 0.0 0.0 0.0 0.0))
((= t 11)
(make-color 0.0 0.0 0.0 0.0))
((= t 12)
(make-color 0.0 0.0 0.0 0.0))
((= t 13)
(make-color 0.0 0.0 0.0 0.0))
((= t 14)
(make-color 0.0 0.0 0.0 0.0))
((= t 15)
(make-color 0.0 0.0 0.0 0.0))
((= t 16)
(make-color 0.0 0.0 0.0 0.0))
((= t 17)
(make-color 0.0 0.0 0.0 0.1))
((= t 18)
(make-color 0.0 0.0 0.0 0.2))
((= t 19)
(make-color 0.0 0.0 0.0 0.4))
((= t 20)
(make-color 0.0 0.0 0.0 0.7))
((= t 21)
(make-color 0.0 0.0 0.0 0.8))
(else
(make-color 0.0 0.0 0.0 0.0)))))
(define-method (refresh (light <light-overlay>))
(set! (painter (& light overlay))
(full-screen-rectangle (overlay-color light))))
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