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;;; Catbird Game Engine
;;; Copyright © 2022 David Thompson <davet@gnu.org>
;;;
;;; Catbird 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.
;;;
;;; Catbird 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 Catbird. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
;;
;; Game state encapsulation.
;;
;;; Code:
(define-module (catbird mode)
#:use-module (catbird config)
#:use-module (catbird input-map)
#:use-module (catbird mixins)
#:use-module (ice-9 match)
#:use-module (oop goops)
#:use-module (srfi srfi-1)
#:export (<major-mode>
<minor-mode>
bind-input
unbind-input
name-mode
clear-inputs
input-map
on-key-press
on-key-release
on-text-input
on-mouse-press
on-mouse-release
on-mouse-move
on-mouse-wheel
on-controller-press
on-controller-release
on-controller-move
<nothing-mode>)
#:re-export (controller-move
controller-press
controller-release
key-press
key-release
text-input
mouse-move
mouse-press
mouse-release
mouse-wheel
name
on-enter
on-exit
on-pause
on-resume
update))
(define-root-class <mode> (<scriptable> <containable> <nameable>)
(input-map #:accessor input-map #:allocation #:each-subclass
#:init-thunk make-input-map))
(define-method (input-map (mode-class <class>))
(class-slot-ref mode-class 'input-map))
(define-method (bind-input mode-class spec handler)
(class-slot-set! mode-class 'input-map
(add-input (input-map mode-class) spec handler)))
(define-method (unbind-input mode-class spec)
(class-slot-set! mode-class 'input-map
(remove-input (input-map mode-class) spec)))
(define (clear-inputs mode-class)
(class-slot-set! mode-class 'input-map '()))
(define-method (on-key-press (mode <mode>) key modifiers)
(let ((handler (key-press-handler (input-map mode) key modifiers)))
(and handler (handler mode))))
(define-method (on-key-release (mode <mode>) key modifiers)
(let ((handler (key-release-handler (input-map mode) key modifiers)))
(and handler (handler mode))))
(define-method (on-text-input (mode <mode>) text)
(let ((handler (text-input-handler (input-map mode))))
(and handler (handler mode text))))
(define-method (on-mouse-press (mode <mode>) button x y)
(let ((handler (mouse-press-handler (input-map mode) button)))
(and handler (handler mode x y))))
(define-method (on-mouse-release (mode <mode>) button x y)
(let ((handler (mouse-release-handler (input-map mode) button)))
(and handler (handler mode x y))))
(define-method (on-mouse-move (mode <mode>) x y x-rel y-rel buttons)
(let ((handler (mouse-move-handler (input-map mode) buttons)))
(and handler (handler mode x y x-rel y-rel))))
(define-method (on-mouse-wheel (mode <mode>) x y)
(let ((handler (mouse-wheel-handler (input-map mode))))
(and handler (handler mode x y))))
(define-method (on-controller-press (mode <mode>) controller-id button)
(let ((handler (controller-press-handler (input-map mode) controller-id button)))
(and handler (handler mode))))
(define-method (on-controller-release (mode <mode>) controller-id button)
(let ((handler (controller-release-handler (input-map mode) controller-id button)))
(and handler (handler mode))))
(define-method (on-controller-move (mode <mode>) controller-id axis value)
(let ((handler (controller-move-handler (input-map mode) controller-id axis)))
(and handler (handler mode value))))
(define-class <major-mode> (<mode>))
(define-class <minor-mode> (<mode>))
(define-class <nothing-mode> (<major-mode>))
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