Exam (elaborations)
University of British Columbia CPSC 110 LAB 3
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University of British Columbia CPSC 110 LAB 3
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(require spd/tags)(require 2htdp/image)
(require 2htdp/universe)
(@assignment lab-03)
(@cwl ???)
; Balloon popping
(@htdw Balloon)
m
er as
;; CONSTANTS ==========================
co
eH w
o.
(define WIDTH 500)
(define HEIGHT 500) rs e
ou urc
(define MTS (empty-scene WIDTH HEIGHT))
o
aC s
(define BALLOON-COLOR "red")
vi y re
(define POP-IMAGE
(overlay (text "POP!" 80 "black")
ed d
(radial-star 30 (/ WIDTH 10) (/ WIDTH 2) "solid" "yellow")))
ar stu
(define CTR-X (/ WIDTH 2))
is
(define CTR-Y (/ HEIGHT 2))
Th
(define SPEED 2)
sh
(define MAX-SIZE (/ WIDTH 2))
This study source was downloaded by 100000805705997 from CourseHero.com on 10-14-2021 20:49:22 GMT -05:00
https://www.coursehero.com/file/57633285/Lab-3docx/
, ;; DATA DEFINITIONS ============================
(@problem 1)
(@htdd Balloon)
;; Balloon is one of
;; - false
;; - Number
;; interp. false means balloon has popped, number is the radius of the balloon
;; CONSTRAINT: Number is in [0, MAX-SIZE)
m
er as
co
eH w
(define B1 0) ;smallest balloon
o.
(define B2 125) ;middle balloon
(define B3 250) rs e
;max size of balloon
ou urc
(define B4 false) ;popped balloon
o
aC s
(define (fn-for-balloon b)
vi y re
(cond [(false? b) (...)]
[(number? b) (... b)]))
ed d
ar stu
(@dd-template-rules one-of ;2 cases
atomic-distinct ;false
is
atomic-non-distinct) ;Number
Th
sh
;; FUNCTIONS ====================================
(@problem 2)
(@htdf main)
(@signature Balloon -> Balloon)
This study source was downloaded by 100000805705997 from CourseHero.com on 10-14-2021 20:49:22 GMT -05:00
https://www.coursehero.com/file/57633285/Lab-3docx/
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