honeylisp/editor/tileedit/ii.fnl

20 lines
589 B
Fennel

(local tiledraw (require :editor.tiledraw))
{:map-bitxy (fn [self x y]
(when (and (>= x 0) (< x 16) (>= y 0) (< y 16))
(local ibyte (if (< x 8) y (+ y 16)))
(local ibit
(if (= x 0) 7
(< x 8) (- x 1)
(- x 8)))
(values ibyte ibit 1)))
:pixel-color (fn [self b _ ibit]
(if (= ibit 7) (tiledraw.pal-from-bit (= b 1))
(= b 1) [255 255 255]
[0 0 0]))
:draw-off (fn [self] (set self.bit nil))
:draw-on (fn [self b] (when (= self.bit nil) (set self.bit (if (= b 1) 0 1))))
:draw-bits (fn [self] self.bit)
}