1 ;;; Gacela, a GNU Guile extension for fast games development
2 ;;; Copyright (C) 2016 by Javier Sancho Fernandez <jsf at jsancho dot org>
4 ;;; This program is free software: you can redistribute it and/or modify
5 ;;; it under the terms of the GNU General Public License as published by
6 ;;; the Free Software Foundation, either version 3 of the License, or
7 ;;; (at your option) any later version.
9 ;;; This program is distributed in the hope that it will be useful,
10 ;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
11 ;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 ;;; GNU General Public License for more details.
14 ;;; You should have received a copy of the GNU General Public License
15 ;;; along with this program. If not, see <http://www.gnu.org/licenses/>.
17 (use-modules (gacela))
20 ;;; Reactive positions
22 (define PI 3.14159265)
23 (define (waggle) (cos (* PI (current-time))))
24 (define (wiggle) (sin (* PI (current-time))))
29 (define charlotte (importBitmap "charlotte.bmp"))
30 (define leftRightCharlotte (moveXY wiggle 0 charlotte))
33 (define pat (importBitmap "pat.bmp"))
34 (define upDownPat (moveXY 0 waggle pat))