(defpackage #:ww.examples/3
  (:use :cl))

(in-package #:ww.examples/3)

(defclass font-display (ww::application) ())

(define-symbol-macro +speed+ 2)

(ww::defhandler move-on-keydown
    (ww::on-keydown ()
      (case scancode
        (:scancode-up (incf (ww::unit-y target) +speed+))
        (:scancode-down (decf (ww::unit-y target) +speed+))
        (:scancode-left (decf (ww::unit-x target) +speed+))
        (:scancode-right (incf (ww::unit-x target) +speed+)))))

(ww::defhandler marquee
    (ww::on-perframe ()
      (when (< 800 (ww::unit-x target))
        (setf (ww::unit-x target)
              -800))
      (incf (ww::unit-x target) +speed+)))

(defmethod ww::boot ((app font-display))
  (let ((hello
          (make-instance
           'ww::text
           :content "Hell! Oh World..."
           :font (ww::get-asset "Ticketing.ttf" :asset-args '(:oversample 2)))))

    (setf (ww::unit-width hello)
          (* 5 (ww::unit-width hello))

          (ww::unit-height hello)
          (* 5 (ww::unit-height hello))

          (ww::unit-x hello) 100

          (ww::unit-y hello) 100)

    (ww::add-handler hello #'marquee)
    (ww::refocus-on hello)

    (ww::add-unit app hello)))


(defun start ()
  (ww::start (make-instance 'font-display
                            :fps 60
                            :refocus-on-mousedown-p nil
                            :title "Wheelwork Example: Font display"
                            :asset-root "~/projects/wheelwork/examples/")))