Help with Racket language

[Ragido]

Hello, i have questions about Racket programing language.

 

It's about designing a simulation using DrRacket big-bang environment. I have a structure that got:

; size is the size of shape
; color is color of shape
;type is form of shape
; posn is a posn structure and gives the location of shape

 

;structure:

$ (define-struct shape (size color type posn))

;constructors:

$ (define b1 (make-shape 10 "red" "c" (make-posn 450 350)))

$ (define b2 (make-shape 15 "green" "t" (make-posn 150 150)))

$(define b3 (make-shape 10 "purple" "c" (make-posn 250 200)))

$ (define b4 (make-shape 20 "orange" "s" (make-posn 320 450)))

$ (define b5 (make-shape 20 "blue" "t" (make-posn 280 300)))

• Design key-f function which takes list-of-shapes and keyEvent and produces a list-of-shapes. The function checks the key event. If keyEvent is "s" then create a new shape as "square" and produce random colored shape with random size (between 0-30) and random position where x is between [0,WIDTH] and y is between [0,HEIGHT]. If keyEvent "c" then create a new shape as "circle" or if keyEvent is "t" then create a new shape as "triangle".

• Design mouse-f function which takes list-of-shapes, x, y and mouseEventand produces a list-of-shapes on scene. The function checks themouse event. If it is \button-down", change the locations of all theshapes to align through a line around the clicked point

That's all what left from the project, thank you so much guys.

[Dat Guy]

What have you done so far to achieve the desired results?