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Untitled

a guest Nov 16th, 2018 182 Never
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  1. currentx = 0
  2. currenty = 0
  3. function move (n,str)
  4.     function forward(n)
  5.         while n > 0
  6.             do turtle.forward()
  7.             n = n - 1
  8.             currenty = currenty + 1
  9.         end
  10.     end
  11.     function back(n)
  12.         while n > 0
  13.             do turtle.back()
  14.             n = n - 1
  15.             currenty = currenty - 1
  16.         end
  17.     end
  18.     function right(n)
  19.         while n > 0
  20.             do turtle.turnRight()
  21.             turtle.forward()
  22.             n = n - 1
  23.             currentx = currentx + 1
  24.             turtle.turnLeft()
  25.         end
  26.     end
  27.     function left(n)
  28.         while n > 0
  29.             do turtle.turnLeft()
  30.             turtle.forward()
  31.             currentx = currentx - 1
  32.             n = n - 1
  33.             turtle.turnRight()
  34.  
  35.         end
  36.     end
  37. if str == "forward"
  38.     then forward(n)
  39. elseif str == "back"
  40.     then back (n)
  41. elseif str == "right"
  42.     then right(n)
  43. elseif str == "left"
  44.     then left (n)
  45. else
  46.     print("string error, not a direction")
  47.     print("or bug in function move")
  48. end
  49. end
  50. function plot(desiredx,desiredy)
  51.     local movementx = desiredx - currentx
  52.     local movementy = desiredy - currenty
  53.     if movementy < 0
  54.         then movementy = -movementcurrenty
  55.         move(movementy,"back")
  56.     else
  57.         move(movementy,"forward")
  58.     end
  59.     if movementx < 0
  60.         then movementx = -movementcurrentx
  61.         move(movementx,"left")
  62.     else
  63.         move(movementx,"right")
  64.  
  65.     end
  66.  
  67.     turtle.placeDown()
  68.  
  69.  
  70. end
  71.  
  72. function drawcircle (radius)
  73.     turtle.up()
  74.     turtle.placeDown() 
  75.     local f = 1 - radius
  76.     local ddx = 0
  77.     local ddy = -2*radius
  78.     local x = 0
  79.     local y = radius
  80.     plot(0,0 + radius)
  81.     plot(0, 0 - radius)
  82.     plot(0 + radius,0)
  83.     plot(0 - radius,0)
  84.     while x < y
  85.         do
  86.         if f >= 0
  87.             then y = y - 1
  88.             ddy = ddy + 2
  89.             f = f + ddy
  90.         end
  91.         x = x + 1
  92.         ddx = ddx + 2
  93.         f = f + ddx + 1
  94.         plot (0 + x,0 + y)
  95.         plot (0 - x, 0 + y)
  96.         plot (0 + x, 0 - y)
  97.         plot (0 - x, 0 - y)
  98.         plot (0 + y, 0 + x)
  99.         plot (0 - y, 0 + x)
  100.         plot (0 + y, 0 - x)
  101.         plot (0 - y, 0 - x)
  102.     end
  103. end
  104.  
  105. function reset ()
  106.     currentx = 0
  107.     currenty = 0
  108. end
  109. print("Good day, radius please")
  110. radius = tonumber(read())
  111. drawcircle(radius)
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