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;;; 01-image-display-and-drag.lisp
(defpackage #:ww.examples/1
(:use #:cl)
(:export #:start))
(in-package :ww.examples/1)
(defclass image-display-and-drag (ww::application ) ())
(ww::defhandler dragging-unit
(ww::on-mousemotion (app x y)
(let ((unit
(elt (ww::application-scene app) 0)))
(setf (ww:x unit) x
(ww:y unit) y))))
(ww:defhandler start-drag
(ww:on-mousedown (target)
(ww::add-handler
ww::*application*
#'dragging-unit)))
(ww:defhandler stop-drag
(ww::on-mouseup (app)
(ww::remove-handler app #'dragging-unit)))
(defmethod ww::boot ((app image-display-and-drag))
(let ((bm
(make-instance 'ww::image
:texture (ww::get-asset "Fezghoul.png"))))
(describe (ww::model-matrix bm))
(describe bm)
(describe app)
(ww::add-unit bm)
(ww::add-handler bm #'start-drag)
(ww::add-handler app #'stop-drag)
(format t "CLICK AND DRAG THE GHOUL~%")
))
(defun start ()
(ww::start
(make-instance
'image-display-and-drag
:mouse-button-events-bubble-p t
:mouse-motion-events-bubble-p t
:asset-root (merge-pathnames
"examples/"
(asdf:system-source-directory :wheelwork)))))
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