91 lines
3.5 KiB
Common Lisp
91 lines
3.5 KiB
Common Lisp
;;;; Copyright © 2023, Jaidyn Ann <jadedctrl@posteo.at>
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;;;;
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;;;; This program is free software: you can redistribute it and/or
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;;;; modify it under the terms of the GNU General Public License as
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;;;; published by the Free Software Foundation, either version 3 of
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;;;; the License, or (at your option) any later version.
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;;;;
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;;;; This program is distributed in the hope that it will be useful,
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;;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;;;; GNU General Public License for more details.
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;;;;
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;;;; You should have received a copy of the GNU General Public License
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;;;; along with this program. If not, see <https://www.gnu.org/licenses/>.
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;;;; FLORA-SEARCH-AURORA.OVERWORLD.UTIL
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;;;; Utility functions used by multiple overworld packages (overworld.tiled & overworld).
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(in-package :flora-search-aurora.overworld.util)
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(defun coords->symbol (x y)
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(intern (format nil "~A,~A" x y) "KEYWORD"))
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(defun symbol->coords (coords-symbol)
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(str:split #\, (symbol-name coords-symbol)))
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(defun string->symbol (string)
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"Given a STRING with an optionally defined package (e.g., “package:symbol”),
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return it as an appopriate symbol."
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(let* ((split (str:split ":" (string-upcase string)))
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(package (when (eq (length split) 2)
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(car split)))
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(symbol (or (cadr split) (car split))))
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(if package
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(intern symbol package)
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(intern symbol))))
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(defun world-coords->screen-coords (world-coords &key (chunk-width 72) (chunk-height 20))
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"Given a set of “world” coordinates, determine where this spot would be on the screen.
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The world is split into screen-sized “chunks” to this end.
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— Chester P. Runk"
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(let* ((chunk-x (floor (/ (getf world-coords :x)
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chunk-width)))
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(chunk-y (floor (/ (getf world-coords :y)
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chunk-height)))
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(x (- (getf world-coords :x) (* chunk-x chunk-width)))
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(y (- (getf world-coords :y) (* chunk-y chunk-height))))
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(list :x x
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:y y
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:chunk (coords->symbol chunk-x chunk-y))))
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(defun world-coords-chunk (coords)
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(getf (world-coords->screen-coords coords) :chunk))
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(defun map->plist (map-hash)
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"Convert a map(-HASH) into a friendly, property-list format!
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Used by SAVE-MAP-TO-FILE."
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(alexandria:hash-table-plist map-hash))
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(defun plist->map (plist)
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"Convert a map from a MAP->PLIST’ed PLIST into a normal
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map hash-table, as used by the game."
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(let ((hash (make-hash-table)))
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;; Add the core map-data…
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(setf (gethash :tiles hash) (getf plist :tiles))
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(setf (gethash :top-tiles hash) (getf plist :top-tiles))
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(setf (gethash :bump-map hash) (getf plist :bump-map))
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(setf (gethash :entities hash) (getf plist :entities))
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(setf (gethash :triggers hash) (getf plist :triggers))
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;; And now the user’s data…
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(setf (gethash :seconds hash) (getf plist :seconds))
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(setf (gethash :day hash) (getf plist :day))
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(setf (gethash :acts hash) (getf plist :acts))
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(setf (gethash :knows hash) (getf plist :knows))
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(setf (gethash :items hash) (getf plist :items))
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hash))
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(defun save-map-to-file (path map &optional (package ":FLORA-SEARCH-AURORA") (variable "*map*"))
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"Given a map, generate source-code that corresponds to it."
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(with-open-file (file-stream path :direction :output :if-exists :supersede)
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(format file-stream "(in-package ~A)~%(defparameter ~A~% (🌍.…:plist->map~% (QUOTE ~S)))"
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package variable (map->plist map))))
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