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;;; Sly
;;; Copyright (C) 2014 Jordan Russell <jordan.likes.curry@gmail.com>
;;;
;;; 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/>.
;;; Commentary:
;;
;; Joystick example code
;;
;;; Code:
(use-modules
(sly game)
(sly repl)
(sly sprite)
(sly texture)
(sly joystick)
(sly signal)
(sly window)
(sly vector)
(sly font))
(open-window)
(start-sly-repl)
(enable-sprites)
(enable-joystick)
(enable-fonts)
(define default-font (load-default-font))
(define resolution (vector 640 480))
(add-hook! window-close-hook stop-game-loop)
(define p1-texture (load-texture "images/p1_front.png"))
(define-signal p1-position
(signal-fold v+ (vector 320 240)
(signal-map
(lambda (v)
(v* (vector 8 8) v))
(signal-sample 1
(make-directional-signal 0 0 1)))))
(define* (button-caption-signal text button #:optional (joystick 0))
(signal-map (lambda (x)
(if x text ""))
(button-down? joystick button)))
(define-signal p1-caption
(signal-map (lambda (text pos)
(make-label default-font
text
(v+ (vector -76 -90) pos)))
(signal-merge
(button-caption-signal "Hello there" 0)
(button-caption-signal "Thanks for pressing button 1" 1)
(button-caption-signal "This is the other caption" 2)
(button-caption-signal "This is the other other caption" 3))
p1-position))
(define (draw-p1-caption dt alpha)
(draw-label (signal-ref p1-caption)))
(define (draw-p1 dt alpha)
(draw-sprite (make-sprite p1-texture
#:position (signal-ref p1-position))))
(add-hook! draw-hook draw-p1)
(add-hook! draw-hook draw-p1-caption)
(add-hook! joystick-axis-hook
(lambda (which axis value)
(format #t "joystick: ~d axis: ~d raw-value: ~d value: ~f~%"
which axis value (axis-scale value))))
(add-hook! joystick-button-press-hook
(lambda (which button)
(format #t "button-press: (joystick: ~d button: ~d)~%"
which button)))
(add-hook! joystick-button-release-hook
(lambda (which button)
(format #t "button-release: (joystick: ~d button: ~d)~%"
which button)))
(with-window (make-window #:title "Joystick test"
#:resolution resolution)
(start-game-loop))
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