Breaking everything with major (but necessary to address bugs in last commit) refactoring

1 files changed, 33 insertions, 0 deletions

diff --git a/draw.fnl b/draw.fnl
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+++ b/draw.fnl
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+;;;; Copyright (C) 2018 Jakob L. Kreuze, All Rights Reserved.
+;;;;
+;;;; This file is part of slime-the-world.
+;;;;
+;;;; slime-the-world 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.
+;;;;
+;;;; slime-the-world 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 slime-the-world. If not, see <http://www.gnu.org/licenses/>.
+
+;; Draws from the a given tile sheet to the screen coordinates, (`x', `y'),
+;; accounting for padding and actual tile size.
+(fn tile [x y sheet frame-x frame-y]
+  (let [x-offset (+ (. sheet :padding-x)
+                    (* frame-x (+ (. sheet :width) (. sheet :padding-x))))
+        y-offset (+ (. sheet :padding-y)
+                    (* frame-y (+ (. sheet :height) (. sheet :padding-y))))]
+    (let [quad (love.graphics.newQuad x-offset
+                                      y-offset
+                                      (. sheet :width)
+                                      (. sheet :height)
+                                      (: (. sheet :img) :getWidth)
+                                      (: (. sheet :img) :getHeight))]
+      (love.graphics.draw (. sheet :img) quad x y))))
+
+{:tile tile}