(define-module (game render hero)
  #:use-module (game model hero)
  #:use-module (chickadee)
  #:use-module (chickadee math vector)
  #:use-module (chickadee graphics sprite)
  #:use-module (chickadee graphics texture)
  #:export (render-hero
            render-hero-load)
  )


(define hero-texture #f)
(define hero-atlas #f)


(define (render-hero-load)
  (set! hero-texture (load-image "assets/images/lr_penguin2.png"))
  (set! hero-atlas (split-texture hero-texture 32 32))) 

;; start index of the walk animation
(define hero-walk-offset 56)

(define (hero-sprite hero)
  (let* ((x (inexact->exact (floor (vec2-x (hero-position hero)))))
         (x-offset (remainder x 8))
         (hero-index (+ hero-walk-offset x-offset)))
    (texture-atlas-ref hero-atlas hero-index)))

(define (render-hero hero)
  (draw-sprite
   (hero-sprite hero)
   (vec2+ 
    (hero-position hero) 
    (vec2 16.0 0.0))))