Create ASDF system definition etc

drawing.lisp

@@ -1,3 +1,8 @@
+;; Copyright (c) Camden Dixie O'Brien
+;; SPDX-License-Identifier: AGPL-3.0-only
+
+(in-package :ham)
+
 (defstruct line points)
 (defstruct polygon points)
 

ham.asd

@@ -0,0 +1,13 @@
+;; Copyright (c) Camden Dixie O'Brien
+;; SPDX-License-Identifier: AGPL-3.0-only
+
+(in-package :asdf-user)
+
+(defsystem :ham
+  :version "0.1.0"
+  :author "Camden Dixie O'Brien"
+  :license "AGPL-3.0-only"
+  :description "A framework for creating physics simulations"
+  :depends-on (:sdl2)
+  :components ((:file "package")
+			   (:file "drawing" :depends-on ("package"))))

package.lisp

@@ -0,0 +1,10 @@
+;; Copyright (c) Camden Dixie O'Brien
+;; SPDX-License-Identifier: AGPL-3.0-only
+
+(in-package :common-lisp-user)
+
+(defpackage :ham
+  (:use :common-lisp :sdl2)
+  (:export :line :circle :rectangle :centre-rectangle
+		   :define-transform :translate :scale :rotate
+		   :overlay :graphics-context :cleanup :display-frame))