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;;; 01-image-display.lisp
(defpackage #:ww.examples/2
(:use #:cl)
(:export #:start))
(in-package :ww.examples/2)
(defclass image-display (ww::application ) ())
(defvar *shared-anim-table* (make-hash-table :synchronized t))
(ww::defhandler move-thing
(ww::on-keydown ()
"Move the target around, grow and shrink it. Print out its
position no matter what happens."
(case scancode
(:scancode-left (decf (ww::x target) 4))
(:scancode-right (incf (ww::x target) 4))
(:scancode-down (decf (ww::y target) 4))
(:scancode-up (incf (ww::y target) 4))
(:scancode-w (incf (ww::width target) 20))
(:scancode-r (incf (ww::rotation target) (/ pi 3)))
(:scancode-l (decf (ww::rotation target) (/ pi 3)))
(:scancode-equals
(when (or (member :lshift modifiers) (member :rshift modifiers))
(ww::scale-by target 1.10)))
(:scancode-minus
(ww::scale-by target 0.9)))
(format t "ghoul pos: ~a,~a~%"
(ww::x target) (ww::y target))))
(ww::defhandler animate-move-thing
(ww::on-keydown ()
"If the target is not already involved in an animation, add a
perframe handler to the target that animates it to a new position."
(when (member scancode '(:scancode-left :scancode-right :scancode-down :scancode-up))
(unless (gethash target *shared-anim-table*)
(setf (gethash target *shared-anim-table*) t)
(let* ((tx (ww::x target))
(ty (ww::y target))
(destx tx)
(desty ty)
(dx 0)
(dy 0))
(case scancode
(:scancode-down (setf dy -1 desty (- ty (ww::height target))))
(:scancode-up (setf dy 1 desty (+ ty (ww::height target))))
(:scancode-left (setf dx -1 destx (- tx (ww::width target))))
(:scancode-right (setf dx 1 destx (+ tx (ww::width target)))))
(ww::add-handler
target
(ww::on-perframe ()
(with-accessors ((cx ww::x) (cy ww::y)) target
(if (and (= cx destx) (= cy desty))
(progn
(remhash target *shared-anim-table*)
(ww::remove-handler target 'ww::perframe))
(setf cx (+ cx dx)
cy (+ cy dy)))))))))))
(ww::defhandler thing-clicked
(ww::on-mousedown ()
(format t "~a was clicked at ~a,~a!~%" target x y)))
(ww::defhandler flip-on-click
(ww::on-mousedown ()
(incf (ww::rotation target) (ww::radians 180) )))
(ww::defhandler twirl-on-click
(ww::on-mousedown ()
(unless (gethash target *shared-anim-table*)
(let ((rot 0))
(setf (gethash target *shared-anim-table*) t)
(ww::add-handler
target
(ww::on-perframe ()
(if (< rot (* 8 pi))
(setf rot (+ 0.3 rot)
(ww::rotation target) rot)
(progn
(setf (ww::rotation target) 0.0)
(ww::remove-handler target 'ww::perframe)
(remhash target *shared-anim-table*)))))))))
(ww::defhandler mouse-over
(ww::on-mousemotion ()
(print (list target x y xrel yrel state))))
(ww::defhandler look-at-me
(ww::on-focus ()
(format t "~a got focus~%" target)))
(ww::defhandler look-away
(ww::on-blur ()
(format t "~a lost focus~%" target)))
(ww::defhandler wheelie
(ww::on-mousewheel ()
(print (list :mousewheel horiz vert dir))))
(defmethod ww::boot ((app image-display))
(let ((bm
(make-instance 'ww::image
:texture (ww::get-asset "Fezghoul.png")))
(bm2
(make-instance 'ww::image
:texture (ww::get-asset "GelatinousCube.png"))))
(ww::add-handler app #'wheelie)
;; first
(ww::refocus-on bm)
(ww::add-handler bm #'animate-move-thing )
(ww::add-handler bm #'thing-clicked)
(ww::add-handler bm #'mouse-over)
;;second
(setf (ww::x bm2) 90
(ww::y bm2) 90)
(ww::add-handler bm2 #'move-thing)
(ww::add-handler bm2 #'twirl-on-click )
(ww::add-handler bm2 #'look-at-me)
(ww::add-handler bm2 #'look-away)
(ww::add-handler bm2 #'wheelie)
(ww::add-unit app bm)
(ww::add-unit app bm2)))
(defun start ()
(ww::start (make-instance 'image-display
:scale 2.0
:fps 60
:width 800
:height 600
:asset-root (merge-pathnames
"examples/"
(asdf:system-source-directory :wheelwork)))))
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