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;;; The Inevitable Game
;;; Copyright © 2018, 2021 Ricardo Wurmus <rekado@elephly.net>
;;;
;;; 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 (characters)
#:use-module (chickadee math rect)
#:use-module (chickadee math vector)
#:use-module (chickadee graphics color)
#:use-module (chickadee graphics font)
#:use-module (chickadee graphics texture)
#:use-module (chickadee graphics tiled)
#:use-module (srfi srfi-1)
#:use-module (srfi srfi-26)
#:use-module (ice-9 match)
#:use-module (engine assets)
#:use-module (engine node)
#:use-module (engine node-2d)
#:use-module (oop goops)
#:export (<character>
conversations
accepted-messages
speaking?
velocity
walk-speed
direction
hitbox
load-atlas
walk))
(define-class <character> (<node-2d>)
(conversations #:accessor conversations #:init-keyword #:conversations)
(accepted-messages #:accessor accepted-messages #:init-form '((hello "Hello there!")))
(speaking? #:accessor speaking? #:init-form #f)
(velocity #:getter velocity #:init-form (vec2 0.0 0.0))
(walk-speed #:accessor walk-speed #:init-form 0.8)
(direction #:accessor direction #:init-form '(idle))
(hitbox #:getter hitbox #:init-form (make-rect 8.0 0.0 16.0 16.0)))
(define (load-atlas file-name tile-width tile-height)
(split-texture (load-image file-name) tile-width tile-height))
(define-method (walk (character <character>) directions . rest)
(let ((stop? (member 'stop rest)))
(unless (and (equal? (direction character) directions)
(not stop?))
(let ((sprite (child-ref character 'sprite))
(speed (if stop? 0.0 (walk-speed character))))
(change-animation sprite (last directions))
(for-each (lambda (dir)
(case dir
((right)
(set-vec2-x! (velocity character) speed))
((left)
(set-vec2-x! (velocity character) (* -1.0 speed)))
((up)
(set-vec2-y! (velocity character) speed))
((down)
(set-vec2-y! (velocity character) (* -1.0 speed)))
((idle)
(set-vec2-x! (velocity character) 0.0)
(set-vec2-y! (velocity character) 0.0)
(change-animation sprite (case (last (direction character))
((right) 'idle-right)
((left) 'idle-left)
((up) 'idle-back)
((down) 'idle-front))))))
directions)
(set! (direction character) directions)))))
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