137 lines
5.5 KiB
Racket
137 lines
5.5 KiB
Racket
;;; SPDX-License-Identifier: LGPL-3.0-or-later
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;;; SPDX-FileCopyrightText: Copyright © 2010-2021 Tony Garnock-Jones <tonyg@leastfixedpoint.com>
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#lang syndicate
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(require racket/set)
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(require 2htdp/image)
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(require/activate syndicate/drivers/gl-2d)
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(define (spawn-background)
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(spawn (during (window $width $height)
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(assert-scene `((push-matrix (scale ,width ,(* height 2))
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(translate 0 -0.25)
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(texture
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,(overlay/xy (rectangle 1 1 "solid" "white")
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0 0
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(rectangle 1 2 "solid" "black"))))
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;; (rotate -30)
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;; (scale 5 5)
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)
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`()))))
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(define (draggable-mixin touching? x y)
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(define (idle)
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(react (stop-when #:when (touching?)
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(message (mouse-event 'left-down (mouse-state $mx $my _ _ _)))
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(log-info "idle -> dragging; in-script? ~v" (in-script?))
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(dragging (- mx (x)) (- my (y))))))
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(define (dragging dx dy)
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(react (on (message (mouse-event 'motion (mouse-state $mx $my _ _ _)))
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(x (- mx dx))
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(y (- my dy)))
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(stop-when (message (mouse-event 'left-up _)) (idle))
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(stop-when (message (mouse-event 'leave _)) (idle))))
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(idle))
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(define (draggable-shape name orig-x orig-y z plain-image hover-image
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#:coordinate-map-id [coordinate-map-id #f]
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#:parent [parent-id #f])
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(spawn (field [x orig-x] [y orig-y])
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(define/query-value touching? #f (touching name) #t)
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(assert (simple-sprite #:parent parent-id
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#:coordinate-map-id coordinate-map-id
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#:touchable-id name
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#:touchable-predicate in-unit-circle?
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z (x) (y) 50 50
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(if (touching?)
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hover-image
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plain-image)))
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(on-start (draggable-mixin touching? x y))))
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(define (tooltip touching? x y w h label-string)
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(define label-text (text label-string 22 "black"))
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(define label (overlay label-text (empty-scene (+ (image-width label-text) 10)
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(+ (image-height label-text) 10))))
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(define (pos)
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(define v (- (x) (image-width label) 10))
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(if (negative? v)
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(+ (x) w 10)
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v))
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(react (assert #:when (touching?)
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(simple-sprite -10
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(pos)
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(+ (y) (* 1/2 h) (- (* 1/2 (image-height label))))
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(image-width label)
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(image-height label)
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label))))
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(define (spawn-player-avatar)
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(local-require 2htdp/planetcute)
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(define CC character-cat-girl)
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(spawn (field [x 100] [y 100])
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(assert (simple-sprite #:touchable-id 'player
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#:coordinate-map-id 'player
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-0.5 (x) (y) (image-width CC) (image-height CC) CC))
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(field [keys-down (set)])
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(on (asserted (key-pressed $k)) (keys-down (set-add (keys-down) k)))
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(on (retracted (key-pressed $k)) (keys-down (set-remove (keys-down) k)))
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(define (key->delta k distance) (if (set-member? (keys-down) k) distance 0))
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(define/query-value touching? #f (touching 'player) #t)
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(on-start (draggable-mixin touching? x y))
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(on (asserted (coordinate-map 'player $xform))
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;; TODO: figure out why this causes lag in frame updates
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(log-info "Player coordinate map: ~v" xform))
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(on-start (tooltip touching? x y (image-width CC) (image-height CC) "The Player"))
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(on (message (frame-event _ _ $elapsed-ms _))
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(define-values (old-x old-y) (values (x) (y)))
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(define distance (* 0.360 elapsed-ms))
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(define nx (+ old-x (key->delta 'right distance) (key->delta 'left (- distance))))
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(define ny (+ old-y (key->delta 'down distance) (key->delta 'up (- distance))))
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(when (not (and (= nx old-x) (= ny old-y)))
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(x nx)
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(y ny)))))
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(define (spawn-frame-counter)
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(spawn (field [i empty-image])
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(assert (simple-sprite -10 300 10 (image-width (i)) (image-height (i)) (i)))
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(on (message (frame-event $counter $sim-time-ms _ _))
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(when (> sim-time-ms 0)
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(define fps (/ counter (/ sim-time-ms 1000.0)))
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(i (text (format "~a fps" fps) 22 "black"))))))
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(spawn-keyboard-integrator)
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(spawn-mouse-integrator)
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(spawn-background)
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;; (spawn-frame-counter)
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(spawn-player-avatar)
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(draggable-shape 'orange 50 50 0
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(circle 50 "solid" "orange")
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(circle 50 "solid" "red"))
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(draggable-shape 'yellow 10 -10 0 #:parent 'orange
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(circle 50 "solid" "yellow")
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(circle 50 "solid" "purple"))
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(draggable-shape 'green 60 60 -1
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(circle 50 "solid" "green")
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(circle 50 "solid" "cyan"))
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(spawn* (until (message (key-event #\q #t _)))
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(assert! (gl-control 'stop)))
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(spawn (during (touching $id)
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(on-start (log-info "Touching ~v" id))
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(on-stop (log-info "No longer touching ~v" id))))
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(spawn-gl-2d-driver)
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