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mc-biome-viewer.el
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mc-biome-viewer.el
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;;; mc-biome-viewer.el --- View biomes in a Minecraft world -*- lexical-binding: t -*-
;; Copyright (C) 2020 Laurence Warne
;; Author: Laurence Warne
;; Maintainer: Laurence Warne
;; Version: 0.1
;; Keywords: games
;; URL: https://github.com/LaurenceWarne/mc-biome-viewer
;; Package-Requires: ((emacs "26") (dash "2.17.0") (cl-lib "0.3") (request "0.3.2") (ht "2.2") (f "0.2.0"))
;; 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/>.
;;; Commentary:
;;
;; mc-biome-viewer shows chunk information from a Minecraft world in a delightful
;; ascii format from within an Emacs buffer. Worlds can be sourced either from
;; a seed or save directory.
;;; Code:
(require 'cl-lib)
(require 'url)
(require 'dash)
(require 'request)
(require 'f)
(require 'ht)
(defgroup mc-biome-viewer nil
"view biomes in a minecraft world from withing Emacs"
:group 'games)
(defcustom mc-biome-viewer-row-chunks-in-camera 16
"How many rows of chunks should be shown in the camera."
:group 'mc-biome-viewer
:type 'integer)
(defcustom mc-biome-viewer-column-chunks-in-camera 32
"How many columns of chunks should be shown in the camera."
:group 'mc-biome-viewer
:type 'integer)
;; Note this must reference a Minecraft version, NOT a launcher profile string.
(defcustom mc-biome-viewer-default-version "1.16.1"
"The default minecraft version to use. Note you must have a launcher profile in your .minecraft directory which uses this version."
:group 'mc-biome-viewer
:type 'string)
(defcustom mc-biome-viewer-biome-symbol-table
(let ((table (ht-create)))
table)
"A mapping from biome names to characters use to show them on the grid."
:group 'mc-biome-viewer
:type 'hash-table)
(defcustom mc-biome-viewer-show-label t
"If non-nil draw a label below the mc-biome-viewer grid showing information about the biome at the cursor."
:group 'mc-biome-viewer
:type 'boolean)
(defcustom mc-biome-viewer-colour-biomes t
"If non-nil colour biomes in the mc-biome-viewer grid according to the value of the biome in MC-BIOME-VIEWER-BIOME-TO-FACE-MAP."
:group 'mc-biome-viewer
:type 'boolean)
;; Source https://github.com/toolbox4minecraft/amidst/blob/v4.5-beta3/src/main/java/amidst/mojangapi/world/versionfeatures/DefaultBiomes.java
(defcustom mc-biome-viewer-biome-to-char-map
'#s(hash-table test equal data ("bamboo jungle hills" ?Y
"bamboo jungle" ?Y
"beach" ?.
"birch forest hills m" ?b
"birch forest hills" ?△
"birch forest m" ?b
"birch forest" ?b
"cold beach" ?.
"cold deep ocean" ?O
"cold ocean" ?o
"cold taiga hills" ?‡
"cold taiga m" ?‡
"cold taiga" ?‡
"deep ocean" ?O
"desert hills" ?△
"desert m" ?~
"desert" ?~
"extreme hills edge" ?△
"extreme hills m" ?△
"extreme hills" ?△
"extreme hills+ m" ?△
"extreme hills+" ?△
"flower forest" ?*
"forest hills" ?△
"forest" ?f
"frozen deep ocean" ?O
"frozen ocean" ?o
"frozen river" ?=
"hell" ?$
"ice mountains" ?▲
"ice plains spikes" ?|
"ice plains" ?❆
"jungle edge m" ?J
"jungle edge" ?J
"jungle hills" ?△
"jungle m" ?J
"jungle" ?J
"lukewarm deep ocean" ?O
"lukewarm ocean" ?o
"mega spruce taiga (hills)" ?‡
"mega spruce taiga" ?‡
"mega taiga hills" ?&
"mega taiga" ?&
"mesa (bryce)" ?#
"mesa plateau f m" ?#
"mesa plateau f" ?#
"mesa plateau m" ?#
"mesa plateau" ?#
"mesa" ?#
"mushroom island shore" ?M
"mushroom island" ?M
"ocean" ?o
"plains" ?^
"river" ?=
"roofed forest m" ?T
"roofed forest" ?T
"savanna m" ?+
"savanna plateau m" ?+
"savanna plateau" ?+
"savanna" ?+
"stone beach" ?.
"sunflower plains" ?*
"swampland m" ?%
"swampland" ?%
"taiga hills" ?△
"taiga m" ?‡
"taiga" ?‡
"the end - barren island" ?\s
"the end - floating islands" ?\s
"the end - high island" ?▢
"the end - medium island" ?\s
"the end" ?I
"the void" ?\s
"warm deep ocean" ?O
"warm ocean" ?o
;; New biomes
"mountains" ?▲
"swamp" ?%
"snowy tundra" ?❆
"snowy mountains" ?▲
"mushroom fields" ?M
"mushroom field shore" ?M
"wooded hills" ?△
"mountain edge" ?\\
"stone shore" ?.
"snowy beach" ?.
"dark forest" ?T
"snowy taiga" ?‡
"snowy taiga hills" ?‡
"giant tree taiga" ?&
"giant tree taiga hills" ?&
"wooded mountains" ?▲
"badlands" ?#
"wooded badlands plateau" ?#
"badlands plateau" ?#
"small end islands" ?▢
"end midlands" ?▢
"end highlands" ?▢
"end barrens" ?▢
"deep warm ocean" ?O
"deep lukewarm ocean" ?O
"deep cold ocean" ?O
"deep frozen ocean" ?O
"desert lakes" ?o
"gravelly mountains" ?▲
"taiga mountains" ?▲
"swamp hills" ?△
"ice spikes" ?|
"modified jungle" ?J
"modified jungle edge" ?J
"tall birch forest" ?b
"tall birch hills" ?b
"dark forest hills" ?T
"snowy taiga mountains" ?▲
"giant spruce taiga" ?&
"giant spruce taiga hills" ?&
"gravelly mountains+" ?▲
"shattered savanna" ?+
"shattered savanna plateau" ?+
"eroded badlands" ?#
"modified wooded badlands plateau" ?#
"modified badlands plateau" ?#
"bamboo jungle" ?Y
"bamboo jungle hills" ?Y
"nether wastes" ?H
"soul sand valley" ?U
"crimson forest" ?C
"warped forest" ?W
"basalt deltas" ?B))
"A mapping from Minecraft biomes to characters used to represent them in the grid."
:group 'mc-biome-viewer
:type 'hash-table)
(defcustom mc-biome-viewer-biome-to-face-map
#s(hash-table test equal data ("bamboo jungle hills" (:foreground "spring green")
"bamboo jungle" (:foreground "spring green")
"beach" (:foreground "gold")
"birch forest hills m" (:foreground "lawn green")
"birch forest hills" (:foreground "lawn green")
"birch forest m" (:foreground "lawn green")
"birch forest" (:foreground "lawn green")
"cold beach" (:foreground "white")
"cold deep ocean" (:foreground "white")
"cold ocean" (:foreground "white")
"cold taiga hills" (:foreground "white")
"cold taiga m" (:foreground "white")
"cold taiga" (:foreground "white")
"deep ocean" (:foreground "dark blue")
"desert hills" (:foreground "yellow")
"desert m" (:foreground "yellow")
"desert" (:foreground "yellow")
"extreme hills edge" (:foreground "chocolate")
"extreme hills m" (:foreground "yellow")
"extreme hills" (:foreground "green")
"extreme hills+ m" (:foreground "chocolate")
"extreme hills+" (:foreground "chocolate")
"flower forest" (:foreground "light green")
"forest hills" (:foreground "green")
"forest" (:foreground "green")
"frozen deep ocean" (:foreground "white")
"frozen ocean" (:foreground "white")
"frozen river" (:foreground "white")
"hell" (:foreground "red")
"ice mountains" (:foreground "white")
"ice plains spikes" (:foreground "violet")
"ice plains" (:foreground "white")
"jungle edge m" (:foreground "spring green")
"jungle edge" (:foreground "spring green")
"jungle hills" (:foreground "spring green")
"jungle m" (:foreground "spring green")
"jungle" (:foreground "spring green")
"lukewarm deep ocean" (:foreground "cyan")
"lukewarm ocean" (:foreground "cyan")
"mega spruce taiga (hills)" (:foreground "white")
"mega spruce taiga" (:foreground "white")
"mega taiga hills" (:foreground "olive")
"mega taiga" (:foreground "olive")
"mesa (bryce)" (:foreground "red")
"mesa plateau f m" (:foreground "red")
"mesa plateau f" (:foreground "red")
"mesa plateau m" (:foreground "red")
"mesa plateau" (:foreground "red")
"mesa" (:foreground "red")
"mushroom island shore" (:foreground "light pink")
"mushroom island" (:foreground "light pink")
"ocean" (:foreground "sky blue")
"plains" (:foreground "light green")
"river" (:foreground "sky blue")
"roofed forest m" (:foreground "green")
"roofed forest" (:foreground "green")
"savanna m" (:foreground "orange")
"savanna plateau m" (:foreground "orange")
"savanna plateau" (:foreground "orange")
"savanna" (:foreground "orange")
"stone beach" (:foreground "grey")
"sunflower plains" (:foreground "light green")
"swampland m" (:foreground "brown")
"swampland" (:foreground "brown")
"taiga hills" (:foreground "dark green")
"taiga m" (:foreground "dark green")
"taiga" (:foreground "dark green")
"the end - barren island" (:foreground "white")
"the end - floating islands" (:foreground "white")
"the end - high island" (:foreground "white")
"the end - medium island" (:foreground "white")
"the end" (:foreground "white")
"the void" (:foreground "white")
"warm deep ocean" (:foreground "cyan")
"warm ocean" (:foreground "cyan")
;; New biomes
"mountains" (:foreground "white")
"swamp" (:foreground "brown")
"snowy tundra" (:foreground "white")
"snowy mountains" (:foreground "white")
"mushroom fields" (:foreground "pink")
"mushroom field shore" (:foreground "pink")
"wooded hills" (:foreground "brown")
"mountain edge" (:foreground "white")
"stone shore" (:foreground "grey")
"snowy beach" (:foreground "white")
"dark forest" (:foreground "green")
"snowy taiga" (:foreground "white")
"snowy taiga hills" (:foreground "white")
"giant tree taiga" (:foreground "olive")
"giant tree taiga hills" (:foreground "olive")
"wooded mountains" (:foreground "white")
"badlands" (:foreground "red")
"wooded badlands plateau" (:foreground "red")
"badlands plateau" (:foreground "red")
"small end islands" (:foreground "white")
"end midlands" (:foreground "white")
"end highlands" (:foreground "white")
"end barrens" (:foreground "white")
"deep warm ocean" (:foreground "cyan")
"deep lukewarm ocean" (:foreground "cyan")
"deep cold ocean" (:foreground "blue")
"deep frozen ocean" (:foreground "white")
"desert lakes" (:foreground "blue")
"gravelly mountains" (:foreground "grey")
"taiga mountains" (:foreground "dark green")
"swamp hills" (:foreground "brown")
"ice spikes" (:foreground "violet")
"modified jungle" (:foreground "spring green")
"modified jungle edge" (:foreground "spring green")
"tall birch forest" (:foreground "lawn green")
"tall birch hills" (:foreground "lawn green")
"dark forest hills" (:foreground "green")
"snowy taiga mountains" (:foreground "white")
"giant spruce taiga" (:foreground "olive")
"giant spruce taiga hills" (:foreground "olive")
"gravelly mountains+" (:foreground "grey")
"shattered savanna" (:foreground "orange")
"shattered savanna plateau" (:foreground "orange")
"eroded badlands" (:foreground "red")
"modified wooded badlands plateau" (:foreground "red")
"modified badlands plateau" (:foreground "red")
"bamboo jungle" (:foreground "spring green")
"bamboo jungle hills" (:foreground "spring green")
"nether wastes" (:foreground "red")
"soul sand valley" (:foreground "dark brown")
"crimson forest" (:foreground "red")
"warped forest" (:foreground "blue")
"basalt deltas" (:foreground "black")))
"A hash table mapping biome names to faces to be applied to their character representations on the mc-biome-viewer grid. Specifically, values in this hash table can be any valid value for the face property described in https://www.gnu.org/software/emacs/manual/html_node/elisp/Overlay-Properties.html#Overlay-Properties"
:group 'mc-biome-viewer
:type 'hash-table)
(defcustom mc-biome-viewer-offset-label t
"If non-nil offset the label so that it's inline with the column offset of the grid."
:group 'mc-biome-viewer
:type 'boolean)
(defvar mc-biome-viewer--server-directory
(concat user-emacs-directory "mc-biome-viewer"))
(defvar mc-biome-viewer--server-url "https://github.com/LaurenceWarne/mc-biome-map-server/releases/download/")
(defvar mc-biome-viewer--server-version "v0.2")
(defvar mc-biome-viewer--jar-name "mc-biome-map-server-all")
(defvar mc-biome-viewer--server-port 29171)
(defvar mc-biome-viewer--server-started nil)
;; Buffer local internal variables
(defvar-local mc-biome-viewer--chunk-cache nil)
(defvar-local mc-biome-viewer--camera-origin-x 0)
(defvar-local mc-biome-viewer--camera-origin-y 0)
(defvar-local mc-biome-viewer--mc-profile nil)
(defvar-local mc-biome-viewer--world-seed nil)
(defvar-local mc-biome-viewer--x-offset 0)
(defvar-local mc-biome-viewer--y-offset 0)
(defvar-local mc-biome-viewer--seed nil)
(defvar-local mc-biome-viewer--save nil)
(defvar-local mc-biome-viewer--chunk-size 16)
;; Maps and modes
(defvar mc-biome-viewer-mode-map
(let ((map (make-sparse-keymap)))
(suppress-keymap map t)
(define-key map "?" #'describe-mode)
(define-key map "f" #'mc-biome-viewer-forward-x)
(define-key map "b" #'mc-biome-viewer-backward-x)
(define-key map "p" #'mc-biome-viewer-forward-y)
(define-key map "n" #'mc-biome-viewer-backward-y)
(define-key map "j" #'mc-biome-viewer-centre-camera)
(define-key map [C-right] #'mc-biome-viewer-forward-x)
(define-key map [C-left] #'mc-biome-viewer-backward-x)
(define-key map [C-up] #'mc-biome-viewer-forward-y)
(define-key map [C-down] #'mc-biome-viewer-backward-y)
map))
(define-derived-mode mc-biome-viewer-mode special-mode "mc-biome-viewer"
"A mode for showing Minecraft worlds."
(setq buffer-read-only t
truncate-lines t)
(set (make-local-variable 'post-command-hook) nil)
(set (make-local-variable 'pre-command-hook) nil)
(add-hook 'post-command-hook
(lambda () (when mc-biome-viewer-show-label (mc-biome-viewer--draw-label :delete t))) nil t)
(buffer-disable-undo))
;; Internal functions
(defun mc-biome-viewer--get-full-jar-name ()
"Get the full name of the server file, including the version and file extension."
(concat mc-biome-viewer--jar-name "-"
mc-biome-viewer--server-version ".jar"))
(defun mc-biome-viewer--get-true-url (gh-url)
"Get the raw url from the GH release file at the url GH-URL."
(let ((response (request gh-url :sync t)))
(request-response-url response)))
(defun mc-biome-viewer--download-server ()
"Download the mc biome viewer server jar file, replacing it if it alread exists."
(url-copy-file (mc-biome-viewer--get-true-url
(concat mc-biome-viewer--server-url
mc-biome-viewer--server-version "/"
"mc-biome-map-server-all.jar"))
(concat mc-biome-viewer--server-directory "/"
(mc-biome-viewer--get-full-jar-name)) t))
(defun mc-biome-viewer--start-server (&optional verbose)
"Start a mc-biome-viewer server unless one has already started.
If VERBOSE is non-nil message additional information."
(unless mc-biome-viewer--server-started
(let ((server-location (concat mc-biome-viewer--server-directory "/"
(mc-biome-viewer--get-full-jar-name))))
(when (not (file-exists-p server-location))
(f-delete mc-biome-viewer--server-directory t) ; Remove old versions if needed
(f-mkdir mc-biome-viewer--server-directory)
(when verbose (message "Downloading most recent version of mc-biome-viewer server..."))
(mc-biome-viewer--download-server)
(when verbose (message "Completed download, starting server...")))
(start-process-shell-command "mc-biome-viewer-server" nil
(concat "java -jar " server-location))
(setq mc-biome-viewer--server-started t))))
(defun mc-biome-viewer--get-biome-coord-at-cursor ()
"Return the biome coordinate at the cursor, or nil if the cursor does not lie on the grid."
(let* ((row (line-number-at-pos))
(column (current-column))
(camera-row (- row mc-biome-viewer--y-offset))
(camera-y (- mc-biome-viewer-row-chunks-in-camera camera-row))
(camera-col (- column mc-biome-viewer--x-offset)))
(if (and (>= camera-y 0) (>= camera-col 0)
(< camera-y mc-biome-viewer-row-chunks-in-camera)
(< camera-col mc-biome-viewer-column-chunks-in-camera))
(vector (+ camera-col mc-biome-viewer--camera-origin-x)
(+ camera-y mc-biome-viewer--camera-origin-y))
nil)))
(defun mc-biome-viewer--init-offsets ()
"Initialize the offsets for the current mc-biome-viewer buffer."
(let ((width (window-text-width))
(height (window-text-height)))
(setq mc-biome-viewer--x-offset
(max 0 (- (/ width 2) (/ mc-biome-viewer-column-chunks-in-camera 2))))
(setq mc-biome-viewer--y-offset
(max 0 (- (/ height 2) (/ mc-biome-viewer-row-chunks-in-camera 2))))))
(defun mc-biome-viewer--slime-chunk-p (biome-x biome-z seed)
"Return t if the chunk in world SEED at (BIOME-X, BIOME-Z) is a slime chunk.
The algorithm is:
Random rnd = new Random(
seed +
(int) (xPosition * xPosition * 0x4c1906) +
(int) (xPosition * 0x5ac0db) +
(int) (zPosition * zPosition) * 0x4307a7L +
(int) (zPosition * 0x5f24f) ^ 0x3ad8025fL
);
System.out.println(rnd.nextInt(10) == 0);"
(let ((random-seed (+ (string-to-number seed)
(* biome-x biome-x 4987142)
(* biome-x 5947611)
(* biome-z biome-z 4392871)
(logxor (* biome-z 389711) 987234911))))
(random (number-to-string random-seed))
(= (random 10) 0)))
(defun mc-biome-viewer--draw-biome (biome-str unknown-str)
"Draw the biome specified by BIOME-STR at the current cursor position, else draw UNKNOWN-STR."
(if (ht-contains? mc-biome-viewer-biome-to-char-map biome-str)
(insert (ht-get mc-biome-viewer-biome-to-char-map biome-str))
(insert unknown-str))
;; Add overlay
(when (and mc-biome-viewer-colour-biomes
(ht-contains? mc-biome-viewer-biome-to-face-map biome-str))
(let ((overlay (make-overlay (1- (point)) (point))))
(overlay-put overlay 'face
(ht-get mc-biome-viewer-biome-to-face-map biome-str)))))
(defun mc-biome-viewer--create-line-overlay (start end face)
"Create an overlay from START to END of FACE."
(let ((overlay (make-overlay start end)))
(overlay-put overlay 'face face)))
(cl-defun mc-biome-viewer--draw-row (start-x y &key (not-found-char ??))
"Draw a row at the current cursor position starting with the biome at the biome coordinate (START-X, Y)."
(let ((first-biome (ht-get mc-biome-viewer--chunk-cache (vector start-x y)
not-found-char)))
(cl-do ((i (1+ start-x) (1+ i))
(last-biome first-biome current-biome)
(current-biome first-biome (ht-get mc-biome-viewer--chunk-cache
(vector i y) not-found-char))
(biome-run 0 (1+ biome-run)))
((> i (+ start-x mc-biome-viewer-column-chunks-in-camera)) nil)
(when (not (equal current-biome last-biome))
(insert-char (ht-get mc-biome-viewer-biome-to-char-map last-biome not-found-char)
biome-run)
(when mc-biome-viewer-colour-biomes
(mc-biome-viewer--create-line-overlay
(- (point) biome-run) (point)
(ht-get mc-biome-viewer-biome-to-face-map last-biome nil)))
(setq biome-run 0))
(when (= i (+ start-x mc-biome-viewer-column-chunks-in-camera))
(insert-char (ht-get mc-biome-viewer-biome-to-char-map
current-biome not-found-char)
biome-run)
(when mc-biome-viewer-colour-biomes
(mc-biome-viewer--create-line-overlay
(- (point) biome-run) (point)
(ht-get mc-biome-viewer-biome-to-face-map current-biome nil)))))))
(defun mc-biome-viewer--draw-buffer (&optional not-found-char)
"Draw biomes as text in the current buffer. If a biome is not found insert NOT-FOUND-CHAR."
(mc-biome-viewer--init-offsets)
(let ((inhibit-read-only t)
(prev-point (point))
(prev-biome (mc-biome-viewer--get-biome-coord-at-cursor)))
(erase-buffer)
(remove-overlays) ; Else causes huge lag
(insert-char ?\n mc-biome-viewer--y-offset)
(save-excursion
(dotimes (i mc-biome-viewer-row-chunks-in-camera nil)
(insert-char ?\s mc-biome-viewer--x-offset)
(let* ((true-y (1- (+ mc-biome-viewer--camera-origin-y
(- mc-biome-viewer-row-chunks-in-camera i)))))
(mc-biome-viewer--draw-row mc-biome-viewer--camera-origin-x true-y))
(insert-char ?\n)))
(if (> prev-point 1) (goto-char prev-point) (forward-char mc-biome-viewer--x-offset))
(when mc-biome-viewer-show-label
(save-excursion (goto-char (point-max)) (insert-char ?\n)
(mc-biome-viewer--draw-label :position prev-biome)))))
(defun mc-biome-viewer--init-buffer ()
"Setup a new buffer for viewing a mc world."
(switch-to-buffer (generate-new-buffer-name "Minecraft Biome Viewer"))
(mc-biome-viewer-mode)
(setq mc-biome-viewer--chunk-cache (ht-create))
;; get initial from server
(mc-biome-viewer--draw-buffer))
(cl-defun mc-biome-viewer--draw-label (&key delete (position (mc-biome-viewer--get-biome-coord-at-cursor)))
"Draw information about the biome at buffer position POSITION, when DELETE is non-nil remove any text following the label (e.g. a previous label)"
(save-excursion
(let* ((biome (ht-get mc-biome-viewer--chunk-cache position))
(inhibit-read-only t)
(region-start (progn (goto-char (point-max)) (forward-line -1)
(line-beginning-position)))
(region-end (progn (forward-line) (line-end-position))))
(remove-overlays region-start region-end)
(when delete (delete-region region-start region-end))
(when mc-biome-viewer-offset-label (insert-char ?\s mc-biome-viewer--x-offset))
(insert "Biome: " (if biome biome "?") "\n")
(when biome
(let ((overlay (make-overlay (- (point) (1+ (length biome))) (point))))
(overlay-put overlay 'face (ht-get mc-biome-viewer-biome-to-face-map
biome))))
(when mc-biome-viewer-offset-label (insert-char ?\s mc-biome-viewer--x-offset))
(insert "(x z): " (if position (format "%s" (--map (* mc-biome-viewer--chunk-size it) position)) "N/A")))))
(cl-defun mc-biome-viewer--request-biomes-seed
(seed chunk-start-x chunk-start-y chunk-end-x chunk-end-y
&key (profile mc-biome-viewer-default-version)
(error-checker #'mc-biome-viewer--error-check-xml)
callback)
"Request chunks from the Minecraft world generated by SEED (using the specified PROFILE) in the integral square described by CHUNK-START-X, CHUNK-START-Y, CHUNK-END-X and CHUNK-END-Y (representing chunk coordinates) from a mc-biome-server. If an error is detected (using ERROR CHECKER) with the returned data message this error, else call CALLBACK with the xml data."
(request
(concat "http://localhost:"
(number-to-string mc-biome-viewer--server-port)
"/biome/seed")
:params `(("seed" . ,seed)
("chunkStartX" . ,chunk-start-x) ("chunkEndX" . ,chunk-end-x)
("chunkStartY" . ,chunk-start-y) ("chunkEndY" . ,chunk-end-y)
("profile" . ,(if profile profile mc-biome-viewer-default-version)))
:parser (lambda () (libxml-parse-xml-region (point) (point-max)))
:success (cl-function
(lambda (&key data &allow-other-keys)
(let ((error-string (funcall error-checker data)))
(if error-string (message error-string)
(when callback (funcall callback data))))))))
(cl-defun mc-biome-viewer--request-biomes-save
(save chunk-start-x chunk-start-y chunk-end-x chunk-end-y
&key (profile mc-biome-viewer-default-version)
(error-checker #'mc-biome-viewer--error-check-xml)
callback)
"Request chunks from the Minecraft world on local storage specified by SAVE (using the specified PROFILE) in the integral square described by CHUNK-START-X, CHUNK-START-Y, CHUNK-END-X and CHUNK-END-Y (representing chunk coordinates) from a mc-biome-server. If an error is detected (using ERROR CHECKER) with the returned data message this error, else call CALLBACK with the xml data."
(request
(concat "http://localhost:"
(number-to-string mc-biome-viewer--server-port)
"/biome/save")
:params `(("save" . ,save)
("chunkStartX" . ,chunk-start-x) ("chunkEndX" . ,chunk-end-x)
("chunkStartY" . ,chunk-start-y) ("chunkEndY" . ,chunk-end-y)
("profile" . ,(if profile profile mc-biome-viewer-default-version)))
:parser (lambda () (libxml-parse-xml-region (point) (point-max)))
:success (cl-function
(lambda (&key data &allow-other-keys)
(let ((error-string (funcall error-checker data)))
(if error-string (message error-string)
(when callback (funcall callback data))))))))
(cl-defun mc-biome-viewer--update-biomes
(&key (chunk-start-x mc-biome-viewer--camera-origin-x)
(chunk-start-y mc-biome-viewer--camera-origin-y)
(chunk-end-x (+ mc-biome-viewer--camera-origin-x
mc-biome-viewer-column-chunks-in-camera))
(chunk-end-y (+ mc-biome-viewer--camera-origin-y
mc-biome-viewer-row-chunks-in-camera))
(profile mc-biome-viewer-default-version)
(error-checker #'mc-biome-viewer--error-check-xml)
callback)
"Request chunks from the Minecraft world shown in the current buffer in the integral square described by CHUNK-START-X, CHUNK-START-Y, CHUNK-END-X and CHUNK-END-Y (representing chunk coordinates) from a mc-biome-server. If an error is detected (using ERROR CHECKER) with the returned data message this error, else call CALLBACK with the xml data."
(if mc-biome-viewer--seed
(mc-biome-viewer--request-biomes-seed mc-biome-viewer--seed
chunk-start-x chunk-start-y
chunk-end-x chunk-end-y
:error-checker error-checker
:profile profile :callback callback)
(mc-biome-viewer--request-biomes-save mc-biome-viewer--save
chunk-start-x chunk-start-y
chunk-end-x chunk-end-y
:error-checker error-checker
:profile profile :callback callback)))
(defun mc-biome-viewer--error-check-xml (data)
"If the passed xml data DATA is an error message, return the message, else return nil."
(if (eq 'error (caaddr data))
(car (last (caddr data)))
nil))
(defun mc-biome-viewer--update-from-xml (data)
"Update the chunk cache from XML DATA retrieved from a mc biome viewer server."
(cl-loop for e in (cddr data) do
(let ((x (car (last (caddr e))))
(y (car (last (cadddr e))))
(biome (downcase (car (last (car (last e)))))))
(ht-set mc-biome-viewer--chunk-cache
(vector (string-to-number x) (string-to-number y)) biome)))
(mc-biome-viewer--draw-buffer "?")
)
(cl-defun mc-biome-viewer--continual-call (fn &key (delay 0.5) (times 5))
(cl-loop repeat times do
(sleep-for delay)
(funcall fn)))
;; Interactive functions
;;;###autoload
(defun mc-biome-viewer-forward-x ()
"Move the camera one chunk to the left."
(interactive)
(cl-incf mc-biome-viewer--camera-origin-x)
(let ((start (+ mc-biome-viewer--camera-origin-x
mc-biome-viewer-column-chunks-in-camera)))
(mc-biome-viewer--update-biomes :chunk-start-x start :chunk-end-x (+ 2 start)
:callback #'mc-biome-viewer--update-from-xml))
(mc-biome-viewer--draw-buffer))
;;;###autoload
(defun mc-biome-viewer-backward-x ()
"Move the camera one chunk to the right."
(interactive)
(cl-decf mc-biome-viewer--camera-origin-x)
(let ((start mc-biome-viewer--camera-origin-x))
(mc-biome-viewer--update-biomes :chunk-start-x (- start 2) :chunk-end-x start
:callback #'mc-biome-viewer--update-from-xml))
(mc-biome-viewer--draw-buffer))
;;;###autoload
(defun mc-biome-viewer-forward-y ()
"Move the camera one chunk upwards."
(interactive)
(cl-incf mc-biome-viewer--camera-origin-y)
(let ((start (+ mc-biome-viewer--camera-origin-y
mc-biome-viewer-row-chunks-in-camera)))
(mc-biome-viewer--update-biomes :chunk-start-y start :chunk-end-y (+ 2 start)
:callback #'mc-biome-viewer--update-from-xml))
(mc-biome-viewer--draw-buffer))
;;;###autoload
(defun mc-biome-viewer-backward-y ()
"Move the camera one chunk downwards."
(interactive)
(cl-decf mc-biome-viewer--camera-origin-y)
(let ((start mc-biome-viewer--camera-origin-y))
(mc-biome-viewer--update-biomes :chunk-start-y (- start 2) :chunk-end-y start
:callback #'mc-biome-viewer--update-from-xml))
(mc-biome-viewer--draw-buffer))
;;;###autoload
(defun mc-biome-viewer-centre-camera (x z)
"Centre the camera at the specified world (X, Z) coordinate."
(interactive "nX: \nnZ: ")
(setq mc-biome-viewer--camera-origin-x
(- (/ x mc-biome-viewer--chunk-size) (/ mc-biome-viewer-column-chunks-in-camera 2)))
(setq mc-biome-viewer--camera-origin-y
(- (/ z mc-biome-viewer--chunk-size) (/ mc-biome-viewer-row-chunks-in-camera 2)))
(mc-biome-viewer--update-biomes :callback #'mc-biome-viewer--update-from-xml))
;;;###autoload
(defun mc-biome-viewer-view-seed (seed)
"Show the Minecraft world with the seed specified by SEED. The version used by the profile mc-biome-viewer-default-version will be used to generate the world from the seed."
(interactive "sSeed: ")
(message "Initializing server...")
(mc-biome-viewer--start-server t)
(mc-biome-viewer--init-buffer)
(setq mc-biome-viewer--seed seed)
(message "Contacting server...")
(make-thread (lambda () (mc-biome-viewer--continual-call
(lambda () (mc-biome-viewer--update-biomes
:callback #'mc-biome-viewer--update-from-xml))))))
;;;###autoload
(defun mc-biome-viewer-view-save (save)
"Show the local Minecraft world at the directory specified by SAVE. An example directory would be `~/.minecraft/my-profile/saves/my-world.'"
(interactive "DSave directory: ")
(message "Initializing server...")
(mc-biome-viewer--start-server)
(mc-biome-viewer--init-buffer)
(setq mc-biome-viewer--save (expand-file-name save))
(message "contacting server...")
(make-thread (lambda () (mc-biome-viewer--continual-call
(lambda () (mc-biome-viewer--update-biomes
:callback #'mc-biome-viewer--update-from-xml))))))
(provide 'mc-biome-viewer)
;;; mc-biome-viewer.el ends here