draw-string.asd

;;;; draw-string.asd

(asdf:defsystem #:draw-string
  :description "Describe draw-string here"
  :author "Your Name <[email protected]>"
  :license "Specify license here"
  :depends-on (#:xelf)
  :serial t
  :components ((:file "package")
               (:file "draw-string")))
    

draw-string.lisp

;;;; draw-string.lisp

(in-package #:draw-string)


(defparameter *width* 640)
(defparameter *height* 480)

(defclass foo (node)
  ((width :initform 16)
   (height :initform 16)))

(defclass bar (buffer)
  ((width :initform *width*)
   (height :initform *height*)
   (foo :initform (make-instance 'foo))))

;; ctrl+r to quit
(defmethod initialize-instance :after ((bar bar) &key)
  (bind-event bar '(:r :control) 'quit))


(defmethod start-game ((bar bar))
  (with-buffer bar
    (draw-string "Hello World" 50 50 :color "red")
    (current-buffer)))

(defun launch ()
  ;; Configure the screen dimensions
  (setf *screen-height* *height*)
  (setf *screen-width* *width*)
  ;; Allow resizing of window and scaling
  (setf *resizable* t)
  (setf *scale-output-to-window* t)
  (with-session
    (open-project :plong)
    ;; this indexes everything defined with DEFRESOURCE
    (index-pending-resources) 
    (let ((bar (make-instance 'bar)))
      ;; start the buffer running
      (switch-to-buffer bar)
      (start-game bar))))

package.lisp

;;;; package.lisp

(defpackage #:draw-string
  (:use #:cl #:xelf)
  (:export launch))

Trying to do a minimum working example that launch a window, but no string come with xelf:draw-string