Difference between revisions of "Activities/Turtle Art/Tutorials/Logo Code for Turtle Art Turing Machine"

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(Turing Machine in Logo)
 
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Logo code saved from Turtle Art Turing Machine session
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== Turtle Art/Tutorials/Logo Code for Turtle Art Turing Machine ==
  
<pre>window
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Read at https://help.sugarlabs.org/turtleart_tutorials/logo_code_for_turing_machine.html
  
comment: functions that implement Turtle Art blocks
+
The source file has been moved to [https://github.com/godiard/help-activity/blob/master/source/turtleart_tutorials/logo_code_for_turing_machine.rst GitHub]
 
 
to tasetpalette :i :r :g :b :myshade
 
make "s ((:myshade - 50) / 50)
 
ifelse lessp :s 0 [
 
make "s (1 + (:s *0.8))
 
make "r (:r * :s)
 
make "g (:g * :s)
 
make "b (:b * :s)
 
] [ make "s (:s * 0.9)
 
make "r (:r + ((99-:r) * :s))
 
make "g (:g + ((99-:g) * :s))
 
make "b (:b + ((99-:b) * :s))
 
] setpalette :i (list :r :g :b)
 
end
 
 
 
 
 
to rgb :myi :mycolors :myshade
 
make "myr first :mycolors
 
make "mycolors butfirst :mycolors
 
make "myg first :mycolors
 
make "mycolors butfirst :mycolors
 
make "myb first :mycolors
 
make "mycolors butfirst :mycolors
 
tasetpalette :myi :myr :myg :myb :myshade
 
output :mycolors
 
end
 
 
 
 
 
to processcolor :mycolors :myshade
 
if emptyp :mycolors [stop]
 
make "i :i + 1
 
processcolor (rgb :i :mycolors :myshade) :myshade
 
end
 
 
 
 
 
to tasetshade :shade
 
make "myshade modulo :shade 200
 
if greaterp :myshade 99 [make "myshade (199-:myshade)]
 
make "i 7
 
make "mycolors :colors
 
processcolor :mycolors :myshade
 
end
 
 
 
 
 
to tasetpencolor :c
 
make "color (modulo (round :c) 100)
 
setpencolor :color + 8
 
end
 
 
 
 
 
make "colors [
 
99  0  0
 
99  5  0
 
99 10  0
 
99 15  0
 
99 20  0
 
99 25  0
 
99 30  0
 
99 35  0
 
99 40  0
 
99 45  0
 
99 50  0
 
99 55  0
 
99 60  0
 
99 65  0
 
99 70  0
 
99 75  0
 
99 80  0
 
99 85  0
 
99 90  0
 
99 95  0
 
99 99  0
 
90 99  0
 
80 99  0
 
70 99  0
 
60 99  0
 
50 99  0
 
40 99  0
 
30 99  0
 
20 99  0
 
10 99  0
 
  0 99  0
 
  0 99  5
 
  0 99 10
 
  0 99 15
 
  0 99 20
 
  0 99 25
 
  0 99 30
 
  0 99 35
 
  0 99 40
 
  0 99 45
 
  0 99 50
 
  0 99 55
 
  0 99 60
 
  0 99 65
 
  0 99 70
 
  0 99 75
 
  0 99 80
 
  0 99 85
 
  0 99 90
 
  0 99 95
 
  0 99 99
 
  0 95 99
 
  0 90 99
 
  0 85 99
 
  0 80 99
 
  0 75 99
 
  0 70 99
 
  0 65 99
 
  0 60 99
 
  0 55 99
 
  0 50 99
 
  0 45 99
 
  0 40 99
 
  0 35 99
 
  0 30 99
 
  0 25 99
 
  0 20 99
 
  0 15 99
 
  0 10 99
 
  0  5 99
 
  0  0 99
 
  5  0 99
 
10  0 99
 
15  0 99
 
20  0 99
 
25  0 99
 
30  0 99
 
35  0 99
 
40  0 99
 
45  0 99
 
50  0 99
 
55  0 99
 
60  0 99
 
65  0 99
 
70  0 99
 
75  0 99
 
80  0 99
 
85  0 99
 
90  0 99
 
95  0 99
 
99  0 99
 
99  0 90
 
99  0 80
 
99  0 70
 
99  0 60
 
99  0 50
 
99  0 40
 
99  0 30
 
99  0 20
 
99  0 10]
 
make "shade  50
 
tasetshade :shade
 
 
 
 
 
to tapop
 
if emptyp :taheap [stop]
 
make "tmp first :taheap
 
make "taheap butfirst :taheap
 
output :tmp
 
end
 
 
 
 
 
to taminus :y :x
 
output sum :x minus :y
 
end
 
 
 
 
 
to tasetxy :x :y
 
setxy :x :y
 
end
 
 
 
 
 
comment: Turing Machine procedures
 
 
 
 
 
to turtleblocks_0
 
comment: Comment
 
#sTuring_Machine
 
end
 
 
 
 
 
to start
 
comment: main program
 
comment: Creates and initializes necessary variables, writes program block, writes tape, runs program
 
clean #sSetup #sProgram #sTape #sExecute
 
end
 
 
 
 
 
to #sSetup
 
comment: Create variables, set initial values
 
right 90.0
 
setpensize 25.0
 
tasetpencolor 0.0
 
tasetshade 50.0 penup
 
make "#scell 0.0
 
make "#ssymbol 0.0
 
make "#smove 0.0
 
make "#sstate 1.0
 
make "#sleftedge -390.0
 
make "#stapey 290.0
 
make "#sprogramy 200.0
 
make "#scellwidth 25.0
 
make "#sright 1.0
 
make "#shalt 4.0
 
make "#sA 3.0
 
make "#sB 2.0
 
end
 
 
 
 
 
to #sTape
 
comment: Write initial tape. User can change values in repeat statements to change arguments.
 
#sToTape
 
pendown
 
tasetpencolor 20.0
 
repeat #sA [ #sWriteCell ]
 
tasetpencolor 0.0
 
#sWriteCell
 
tasetpencolor 20.0
 
repeat #sB [ #sWriteCell ]  
 
tasetpencolor 0.0
 
#sWriteCell #sToTape penup
 
end
 
 
 
 
 
to #sProgram
 
comment: Write program table
 
tasetxy :#sleftedge :#sprogramy
 
tasetpencolor 20.0
 
#sWriteCell
 
tasetpencolor 20.0
 
#sWriteCell
 
tasetpencolor 40.0
 
#sWriteCell
 
tasetxy :#sleftedge taminus ycor :#scellwidth
 
tasetpencolor 20.0
 
#sWriteCell
 
tasetpencolor 20.0
 
#sWriteCell
 
tasetpencolor 20.0
 
#sWriteCell
 
tasetxy :#sleftedge taminus ycor :#scellwidth
 
tasetpencolor 0.0
 
#sWriteCell
 
tasetpencolor 0.0
 
#sWriteCell
 
tasetpencolor 60.0
 
#sWriteCell
 
stack1
 
end
 
 
 
to stack1
 
comment: Continuation of Program so that the segments fit on the Turtle Art screen
 
tasetxy :#sleftedge taminus ycor :#scellwidth
 
tasetpencolor 20.0
 
#sWriteCell
 
tasetpencolor 20.0
 
#sWriteCell
 
tasetpencolor 40.0
 
#sWriteCell
 
tasetxy :#sleftedge taminus ycor :#scellwidth
 
tasetpencolor 0.0
 
#sWriteCell
 
tasetpencolor 20.0
 
#sWriteCell
 
tasetpencolor 80.0
 
#sWriteCell
 
tasetxy
 
  :#sleftedge taminus ycor
 
  :#scellwidth
 
tasetpencolor 0.0
 
#sWriteCell
 
tasetpencolor 20.0
 
#sWriteCell
 
tasetpencolor 80.0
 
#sWriteCell
 
penup
 
end
 
 
 
 
 
to #sExecute
 
 
 
comment: Test for halt or next program step
 
make "#sstep 0.0
 
forever
 
  [ ifelse ( equal? :#sstate :#shalt )
 
  [  stop ]
 
  [ #sReadPixel
 
    #sSetValue
 
    make "#ssymbol :#sValue
 
    #sToProgram
 
    wait 1.0
 
    #sSetSymbol
 
    forward :#scellwidth
 
    #sSetMove
 
    forward :#scellwidth
 
    #sSetState
 
    #sLog
 
    #sToTape
 
    #sWriteSymbol
 
    #sNewCell
 
    wait 1.0
 
    make "#sstep sum :#sstep 1.0 ] ]
 
end
 
 
 
 
 
to #sToTape
 
comment: Move turtle to current cell on tape
 
tasetxy
 
  sum :#sleftedge product :#scellwidth :#scell
 
  :#stapey
 
end
 
 
 
 
 
to #sToProgram
 
comment: Move Turtle to beginning of current program row to execute
 
tasetxy
 
  taminus :#sleftedge 3.0
 
  taminus :#sprogramy product :#scellwidth sum :#ssymbol product 2.0 taminus :#sstate 1.0
 
end
 
 
 
 
 
to #sWriteCell
 
 
 
comment: Write current color to current cell, and move to next cell
 
pendown
 
forward 0.0
 
penup
 
forward :#scellwidth
 
end
 
 
 
 
 
to #sWriteSymbol
 
comment: Write current color in cell without moving
 
pendown
 
forward 0.0
 
penup
 
end
 
 
 
 
 
to #sReadPixel
 
 
 
comment: Read RGB values of pixel to stack, pop to variables
 
keyboard
 
make "#sR tapop
 
make "#sG tapop
 
make "#sB tapop
 
end
 
 
 
 
 
to #sSetValue
 
comment: Find value of cell symbol from RGB numbers
 
  ifelse not ( equal? :#sB 128.0 )
 
  [  ifelse not ( equal? :#sR 128.0 )
 
    [  ifelse not ( equal? :#sG 128.0 )
 
    [  ifelse ( equal? :#sG 0.0 )
 
    [  make "#sValue 0.0 ]
 
    [ make "#sValue 1.0 ] ]
 
  [ make "#sValue 3.0 ] ]
 
  [ make "#sValue 4.0 ] ]
 
[ make "#sValue 2.0 ]
 
end
 
 
 
 
 
to #sSetMove
 
comment: Read next Move direction from program table
 
#sReadPixel
 
#sSetValue
 
make "#smove :#sValue
 
end
 
 
 
 
 
to #sSetSymbol
 
comment: Read next Symbol to write from program table
 
#sReadPixel
 
#sSetValue
 
make "#ssymbol :#sValue
 
ifelse ( equal? :#ssymbol 0.0 )
 
  [  tasetpencolor 0 ]
 
  [ tasetpencolor 20.0 ]
 
end
 
 
 
 
 
to #sSetState
 
comment: Read next State from program table
 
#sReadPixel
 
#sSetValue
 
make "#sstate :#sValue
 
end
 
 
 
 
 
to #sNewCell
 
comment: Move left or right and set cell number of new location
 
  ifelse ( equal? :#smove :#sright )
 
  [ forward :#scellwidth
 
    make "#scell sum :#scell 1.0 ]
 
  [ back :#scellwidth
 
    make "#scell taminus :#scell 1.0 ]
 
end
 
 
 
 
 
to #sLog
 
comment: Write Step number, Symbol, Move, State, Cell number on new log line in black, saving and restoring
 
comment: current position and current color
 
make "#sx xcor
 
make "#sy ycor
 
tasetxy -300.0 taminus 200.0 product 20.0 :#sstep
 
make "#scolor pencolor
 
tasetpencolor 0
 
label sentence ('box', "427)
 
#sstep
 
forward 30.0
 
label sentence ('box', "339)
 
#ssymbol
 
forward 20.0
 
label sentence ('box', "341)
 
#smove
 
forward 20.0
 
label sentence ('box', "537)
 
#sstate
 
forward 20.0
 
label sentence ('box', "562)
 
#scell
 
tasetpencolor :#scolor
 
end
 
</pre>
 

Latest revision as of 09:57, 28 July 2018

Turtle Art/Tutorials/Logo Code for Turtle Art Turing Machine

Read at https://help.sugarlabs.org/turtleart_tutorials/logo_code_for_turing_machine.html

The source file has been moved to GitHub