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;;; Catbird Game Engine
;;; Copyright © 2022 David Thompson <davet@gnu.org>
;;;
;;; Licensed under the Apache License, Version 2.0 (the "License");
;;; you may not use this file except in compliance with the License.
;;; You may obtain a copy of the License at
;;;
;;; http://www.apache.org/licenses/LICENSE-2.0
;;;
;;; Unless required by applicable law or agreed to in writing, software
;;; distributed under the License is distributed on an "AS IS" BASIS,
;;; WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
;;; See the License for the specific language governing permissions and
;;; limitations under the License.
;;; Commentary:
;;
;; Catbird engine entry point.
;;
;;; Code:
(define-module (catbird)
#:use-module (catbird camera)
#:use-module (catbird config)
#:use-module (catbird input-map)
#:use-module (catbird kernel)
#:use-module (catbird minibuffer)
#:use-module (catbird mode)
#:use-module (catbird overlay)
#:use-module (catbird region)
#:use-module (catbird scene)
#:use-module (catbird ui)
#:use-module (chickadee)
#:use-module (chickadee math rect)
#:use-module (oop goops)
#:export (run-catbird
exit-catbird))
;; Add the system notification and debugging overlay.
(define (add-overlay)
(let ((region (create-full-region #:name 'overlay #:rank 9999))
(overlay-scene (make-overlay)))
(set! (camera region)
(make <camera-2d>
#:width (rect-width (area region))
#:height (rect-height (area region))))
(replace-scene region overlay-scene)
(add-minor-mode overlay-scene (make <ui-mode>))))
(define (overlay-scene)
(scene (find-region-by-name 'overlay)))
(define-method (notify message)
(notify (overlay-scene) message))
(define (open-minibuffer)
(push-major-mode (overlay-scene) (make <minibuffer-mode>)))
(bind-input/global (key-press 'x '(alt)) open-minibuffer)
(define* (run-catbird thunk #:key (width 1366) (height 768)
(title "^~Catbird~^") (fullscreen? #f)
(resizable? #t) (update-hz 60))
(let ((kernel (make <kernel>)))
(parameterize ((current-kernel kernel))
(run-game #:window-title title
#:window-width width
#:window-height height
#:window-fullscreen? fullscreen?
#:window-resizable? resizable?
#:update-hz update-hz
#:load
(lambda ()
(load* kernel)
(thunk)
(add-overlay))
#:error
(lambda (e stack)
(on-error kernel e stack))
#:draw
(lambda (alpha)
(render kernel alpha))
#:update
(lambda (dt)
(update kernel dt))
#:key-press
(lambda (key modifiers repeat?)
(on-key-press kernel key modifiers))
#:key-release
(lambda (key modifiers)
(on-key-release kernel key modifiers))
#:text-input
(lambda (text)
(on-text-input kernel text))
#:mouse-press
;; TODO: Handle click counter?
(lambda (button clicks x y)
(on-mouse-press kernel button x y))
#:mouse-release
(lambda (button x y)
(on-mouse-release kernel button x y))
#:mouse-move
(lambda (x y x-rel y-rel buttons)
(on-mouse-move kernel x y x-rel y-rel buttons))
#:mouse-wheel
(lambda (x y)
(on-mouse-wheel kernel x y))
#:controller-add
(lambda (controller)
(on-controller-add kernel controller))
#:controller-remove
(lambda (controller)
(on-controller-remove kernel controller))
#:controller-press
(lambda (controller button)
(on-controller-press kernel controller button))
#:controller-release
(lambda (controller button)
(on-controller-release kernel controller button))
#:controller-move
(lambda (controller axis value)
(on-controller-move kernel controller axis value))))))
(define (exit-catbird)
"Stop the Catbird engine."
(abort-game))
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