src/2d/demo.lisp @ 94393b5cd67e

(in-package #:coding-math.2d.demo)

;;;; Config
(setf *bypass-cache* t)
(defparameter *width* 600)
(defparameter *height* 600)

(defparameter *center-x* (/ *width* 2))
(defparameter *center-y* (/ *height* 2))
(defparameter *center* (vec2 *center-x* *center-y*))


(defvar *shift* nil)
(defvar *control* nil)
(defvar *command* nil)
(defvar *option* nil)


;;;; Utils
(defmacro with-setup (&body body)
  `(with-fps
    (background (gray 1))
    ,@body))

(defun real-time ()
  (/ (get-internal-real-time) internal-time-units-per-second))

(defun random-location ()
  (vec2 (random-range 0 *width*)
        (random-range 0 *height*)))

(defun random-location-centered ()
  (vec2 (random-range (- *center-x*) *center-x*)
        (random-range (- *center-y*) *center-y*)))

(defmacro just-once (dirty-place &body body)
  `(when ,dirty-place
     (setf ,dirty-place nil)
     ,@body))


;;;; Episode

;;;; Sketch
(defun draw-particle (p)
  (circle (particle-x p) (particle-y p) (particle-radius p)))

(defun draw-line (p1 p2)
  (line (vec2-x p1) (vec2-y p1)
        (vec2-x p2) (vec2-y p2)))

(defun draw-circle (p &optional (radius 5))
  (circle (vec2-x p) (vec2-y p) radius))

(defun draw-square (p radius)
  (rect (- (vec2-x p) radius)
        (- (vec2-y p) radius)
        (* 2 radius)
        (* 2 radius)))

(defun draw-polygon (points)
  (when points
    ;; why is this fucked?
    (apply #'polygon
           (iterate (for p :in points)
                    (collect (vec2-x p))
                    (collect (vec2-y p))))))

(defun vec-to-list (v)
  (list (vec2-x v) (vec2-y v)))

(defun draw-triangle (p1 p2 p3)
  #+sketch-polygon-fn-is-fucked (polygon (vec2-x p1) (vec2-y p1)
                                         (vec2-x p2) (vec2-y p2)
                                         (vec2-x p3) (vec2-y p3))
  (let ((vertices (list (vec-to-list p1)
                        (vec-to-list p2)
                        (vec-to-list p3))))
    (sketch::draw-shape :triangles vertices vertices)))


(defsketch demo
    ((width *width*) (height *height*) (y-axis :up) (title "Coding Math 2D")
     (copy-pixels t)
     (mouse (vec2 0 0))
     (frame 0)
     (start-time (real-time))
     (current-time 0)
     (previous-time 0)
     (total-time 0)
     ;; Data
     (transforms
       (list (sb-cga::matrix 0.85  0.04 0.00 0.00
                             -0.04 0.85 0.00 1.60
                             0.00  0.00 0.00 0.00
                             0.00  0.00 0.00 1.00)
             (sb-cga::matrix -0.15 0.28 0.00 0.00
                             0.26  0.24 0.00 0.44
                             0.00  0.00 0.00 0.00
                             0.00  0.00 0.00 1.00)
             (sb-cga::matrix 0.20 -0.26 0.00 0.00
                             0.23  0.22 0.00 1.60
                             0.00  0.00 0.00 0.00
                             0.00  0.00 0.00 1.00)
             (sb-cga::matrix 0.00 0.00 0.00 0.00
                             0.00 0.16 0.00 0.00
                             0.00 0.00 0.00 0.00
                             0.00 0.00 0.00 1.00)))
     (weights (list 0.85 0.07 0.07 0.01))
     (wl (make-weightlist transforms weights))
     (point (sb-cga::vec (random 1.0) (random 1.0) 0.0))
     (dirty t)
     ;; Pens
     (particle-pen (make-pen :fill (gray 0.9) :stroke (gray 0.4)))
     (black-pen (make-pen :stroke (rgb 0 0 0) :fill (rgb 0.4 0.4 0.4) :weight 1 :curve-steps 50))
     (red-pen (make-pen :stroke (rgb 0.6 0 0) :fill (rgb 0.9 0 0) :weight 1 :curve-steps 50))
     (green-pen (make-pen :stroke (rgb 0 0.6 0) :fill (rgb 0 0.9 0) :weight 1 :curve-steps 50))
     (blue-pen (make-pen :stroke (rgb 0 0 0.6) :fill (rgb 0 0 0.9) :weight 1 :curve-steps 50))
     (black-fill-pen (make-pen :fill (gray 0) :weight 0))
     )
  (setf previous-time current-time
        current-time (real-time))
  (incf total-time (- current-time previous-time))
  (incf frame)
  ;;
  (just-once dirty
    (background (gray 1.0)))
  (in-context
    (translate *center-x* 0)
    (iterate
      (repeat 100)
      (with-pen black-fill-pen
        #+no (sketch:point (* 50 (aref point 0))
                           (* 50 (aref point 1)))
        (sketch:rect (* 50 (aref point 0))
                     (* 50 (aref point 1))
                     0.5
                     0.5))
      (zapf point (sb-cga::transform-point % (weightlist-random wl))))

    )
  ;;

  )


;;;; Mouse
(defun mousemove (instance x y)
  (with-slots (mouse) instance
    (setf mouse (vec2-sub (vec2 x (- *height* y)) *center*))
    ;;
    ;;
    )
  )


(defun mousedown-left (instance x y)
  (declare (ignorable instance x y))
  )

(defun mousedown-right (instance x y)
  (declare (ignorable instance x y))
  )

(defun mouseup-left (instance x y)
  (declare (ignorable instance x y))
  )

(defun mouseup-right (instance x y)
  (declare (ignorable instance x y))
  )


(defmethod kit.sdl2:mousemotion-event ((window demo) ts b x y xrel yrel)
  (declare (ignore ts b xrel yrel))
  (mousemove window x y))

(defmethod kit.sdl2:mousebutton-event ((window demo) state ts button x y)
  (declare (ignore ts))
  (funcall (case state
             (:mousebuttondown
              (case button
                (1 #'mousedown-left)
                (3 #'mousedown-right)))
             (:mousebuttonup
              (case button
                (1 #'mouseup-left)
                (3 #'mouseup-right))))
           window x y))


;;;; Keyboard
(defun keydown (instance scancode)
  (declare (ignorable instance))
  (scancode-case scancode
    (:scancode-space (sketch::prepare instance))
    (:scancode-lshift (setf *shift* t))
    (:scancode-lctrl (setf *control* t))
    (:scancode-lgui (setf *command* t))
    (:scancode-lalt (setf *option* t))
    ;;
    ;;
    ))

(defun keyup (instance scancode)
  (declare (ignorable instance))
  (scancode-case scancode
    (:scancode-lshift (setf *shift* nil))
    (:scancode-lctrl (setf *control* nil))
    (:scancode-lgui (setf *command* nil))
    (:scancode-lalt (setf *option* nil))
    (:scancode-space nil)))


(defmethod kit.sdl2:keyboard-event ((instance demo) state timestamp repeatp keysym)
  (declare (ignore timestamp repeatp))
  (cond
    ((eql state :keyup) (keyup instance (sdl2:scancode-value keysym)))
    ((eql state :keydown) (keydown instance (sdl2:scancode-value keysym)))
    (t nil)))


;;;; Run
; (defparameter *demo* (make-instance 'demo))