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pacmacs-walls.el
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pacmacs-walls.el
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;;; pacmacs-walls.el --- Pacman for Emacs -*- lexical-binding: t -*-
;; Copyright (C) 2015-2016 Codingteam
;; Author: Codingteam <[email protected]>
;; Maintainer: Alexey Kutepov <[email protected]>
;; URL: http://github.com/codingteam/pacmacs.el
;; Permission is hereby granted, free of charge, to any person
;; obtaining a copy of this software and associated documentation
;; files (the "Software"), to deal in the Software without
;; restriction, including without limitation the rights to use, copy,
;; modify, merge, publish, distribute, sublicense, and/or sell copies
;; of the Software, and to permit persons to whom the Software is
;; furnished to do so, subject to the following conditions:
;; The above copyright notice and this permission notice shall be
;; included in all copies or substantial portions of the Software.
;; THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
;; EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
;; MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
;; NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
;; BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
;; ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
;; CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
;; SOFTWARE.
;;; Commentary:
;; Routines for working with game resources
;;; Code:
(require 'dash)
(require 'color)
(require 'pacmacs-vector)
(defconst pacmacs--wall-color "#5555ff")
(defconst pacmacs--wall-weight 10)
(defvar pacmacs--wall-tiles-cache
(make-hash-table))
(defun pacmacs--clear-wall-tiles-cache ()
(interactive)
(clrhash pacmacs--wall-tiles-cache))
(defun pacmacs--put-wall-tile-corner (bits row column weight weights-to-color)
(dotimes (i weight)
(dotimes (j weight)
(aset (aref bits (+ i row)) (+ j column) (funcall weights-to-color i j)))))
(defun pacmacs--put-vertical-bar (bits column height weight weight-to-color)
(dotimes (w weight)
(dotimes (i height)
(aset (aref bits i) (+ column w) (funcall weight-to-color w)))))
(defun pacmacs--put-horizontal-bar (bits row width weight weight-to-color)
(dotimes (w weight)
(dotimes (i width)
(aset (aref bits (+ row w)) i (funcall weight-to-color w)))))
(defun pacmacs--bit-list-to-integer (bit-list)
(let ((result 0))
(dolist (bit bit-list)
(setq result (logior (lsh result 1)
(if bit 1 0))))
result))
(defun pacmacs--generate-xpm-palette (palette)
(let* ((n (length palette))
(palette-indices (number-sequence 0 (1- n))))
(->> palette
(-zip-with #'cons palette-indices)
(-map (-lambda ((index . color))
(format "\"%c c %s\",\n" (+ index ?a) color)))
(apply #'concat))))
(defun pacmacs--color-hex-gradient (start stop step-number)
(-map (-lambda (color)
(apply #'color-rgb-to-hex color))
(color-gradient
(color-name-to-rgb start)
(color-name-to-rgb stop)
step-number)))
(defun pacmacs--wall-tile-to-xpm (wall-tile width height palette)
(concat
"/* XPM */\n"
"static char *tile[] = {\n"
"/**/\n"
(format "\"%d %d %d 1\",\n" width height (1+ (length palette)))
"\" c None\",\n"
(pacmacs--generate-xpm-palette palette)
"/* pixels */\n"
(mapconcat
(lambda (row)
(format "\"%s\""
(mapconcat (-lambda (bit)
(if bit (format "%c" (+ bit ?a)) " "))
row "")))
wall-tile
",\n")
"\n};"))
(defun pacmacs--normalize-wall-bits (wall-bits)
(-let (((bottom right top left left-upper right-upper left-bottom right-bottom)
wall-bits))
(list bottom right top left
(and left-upper (not left) (not top))
(and right-upper (not right) (not top))
(and left-bottom (not left) (not bottom))
(and right-bottom (not right) (not bottom)))))
(defun pacmacs--inverted-weight-to-color (weight)
(-lambda (w) (- weight w 1)))
(defun pacmacs--two-weights-to-color (row-inverted column-inverted color-inverted weight)
(-lambda (row-weight column-weight)
(let ((color (->> (pacmacs--squared-distance
0 0
(if row-inverted
(- weight row-weight 1)
row-weight)
(if column-inverted
(- weight column-weight 1)
column-weight))
(sqrt)
(floor)
(min (1- weight)))))
(if color-inverted
(- weight color 1)
color))))
(defun pacmacs--wall-bits-get-corners (wall-bits)
(-drop 4 wall-bits))
(defun pacmacs--wall-bits-get-bars (wall-bits)
(-take 4 wall-bits))
(defun pacmacs--put-inner-corners (wall-tile width height weight wall-bits)
(-let (((left-upper right-upper left-bottom right-bottom)
(pacmacs--wall-bits-get-corners wall-bits)))
(when left-upper
(pacmacs--put-wall-tile-corner wall-tile 0 0 weight
(pacmacs--two-weights-to-color nil nil nil weight)))
(when right-upper
(pacmacs--put-wall-tile-corner wall-tile 0 (- width weight) weight
(pacmacs--two-weights-to-color nil t nil weight)))
(when left-bottom
(pacmacs--put-wall-tile-corner wall-tile (- height weight) 0 weight
(pacmacs--two-weights-to-color t nil nil weight)))
(when right-bottom
(pacmacs--put-wall-tile-corner wall-tile (- height weight) (- width weight) weight
(pacmacs--two-weights-to-color t t nil weight)))))
(defun pacmacs--put-bars (wall-tile width height weight wall-bits)
(-let (((bottom right top left)
(pacmacs--wall-bits-get-bars wall-bits)))
(when left
(pacmacs--put-vertical-bar wall-tile 0 height weight #'identity))
(when right
(pacmacs--put-vertical-bar wall-tile (- width weight) height weight
(pacmacs--inverted-weight-to-color weight)))
(when top
(pacmacs--put-horizontal-bar wall-tile 0 width weight #'identity))
(when bottom
(pacmacs--put-horizontal-bar wall-tile (- height weight) width weight
(pacmacs--inverted-weight-to-color weight)))))
(defun pacmacs--put-outer-corners (wall-tile width height weight wall-bits)
(-let (((bottom right top left)
(pacmacs--wall-bits-get-bars wall-bits)))
(when (and left top) ;left-upper
(pacmacs--put-wall-tile-corner wall-tile 0 0 weight
(pacmacs--two-weights-to-color t t t weight)))
(when (and right top) ;right-upper
(pacmacs--put-wall-tile-corner wall-tile 0 (- width weight) weight
(pacmacs--two-weights-to-color t nil t weight)))
(when (and left bottom) ;left-bottom
(pacmacs--put-wall-tile-corner wall-tile (- height weight) 0 weight
(pacmacs--two-weights-to-color nil t t weight)))
(when (and right bottom) ;right-bottom
(pacmacs--put-wall-tile-corner wall-tile (- height weight) (- width weight) weight
(pacmacs--two-weights-to-color nil nil t weight)))))
(defun pacmacs--create-wall-tile (width height wall-bits)
"Creates a wall tile based on the WALL-BITS.
WALL-BITS go as follow (bottom right top left left-upper
right-upper left-bottom right-bottom). WIDTH and HEIGHT are the
size of the tile. All the created tiles are cached."
(let* ((cache-index (-> wall-bits
(pacmacs--normalize-wall-bits)
(pacmacs--bit-list-to-integer))))
(-if-let (cached-tile (gethash cache-index pacmacs--wall-tiles-cache))
cached-tile
(puthash cache-index
(let* ((wall-tile (make-vector width nil))
(palette (pacmacs--color-hex-gradient
(face-attribute 'default :background)
pacmacs--wall-color
pacmacs--wall-weight)))
(dotimes (i width)
(aset wall-tile i (make-vector height nil)))
(pacmacs--put-inner-corners wall-tile width height pacmacs--wall-weight wall-bits)
(pacmacs--put-bars wall-tile width height pacmacs--wall-weight wall-bits)
(pacmacs--put-outer-corners wall-tile width height pacmacs--wall-weight wall-bits)
(create-image (pacmacs--wall-tile-to-xpm wall-tile width height palette)
'xpm t))
pacmacs--wall-tiles-cache))))
(provide 'pacmacs-walls)
;;; pacmacs-anim.el ends here