How do I move the turtle in LOGO?

Question

How do I move the turtle in LOGO?

Answer 1

// MOVE FORWARD
FD 75
// TURN RIGHT
RT 54
// TURN LEFT
LT 21
// MOVE BACKWARD
BK 17

Check out some other turtle commands found here...

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Turtle Commands

• BACK ## [BK] - Move turtle back

• BACKGROUND ## [BG] - Set Background color (0-15)

  • 0 - Black
  • 1 - White
  • 2 - Red
  • 3 - Cyan
  • 4 - Purple
  • 5 - Green
  • 6 - Blue
  • 7 - Yellow
  • 8 - Orange
  • 9 - Brown
  • 10 - Light Red
  • 11 - Grey 1
  • 12 - Grey 2
  • 13 - Light Green
  • 14 - Light Blue
  • 15 - Grey 3

• CLEARSCREEN [CS] - Clear Screen without moving turtle

• DRAW - Clear Screen and take turtle home
• EACH - Tell several sprites, whose numbers are in a list, to accept commands in a second list, e.g. EACH [1 2] [SQUARE 10]
• FORWARD ## [FD] - Move turtle forward
• FULLSCREEN - Full graphics screen (same as pressing F5)
• HEADING - Output turtle heading as a number (0-359)
• HIDETURTLE [HT] - Make turtle invisible
• HOME - Move turtle to center of screen pointing up
• LEFT [LT] - Turn turtle left
• NODRAW [ND] - Enter text mode with clear screen
• NOWRAP - Prevent drawings from wrapping around screen
• PENCOLOR [PC] - Change pen color
• PENDOWN [PD] - Turtle leaves trail
• PENUP [PU] - Turtle ceases to leave trail
• RIGHT ## [RT] - Turn turtle right
• SETHEADING [SETH] - Set turtle heading, e.g. SETH 180
• SETSHAPE - Set the current sprite shape (0-7)
• SETX Move the turtle to the specified x co-ordinates e.g. SETX 50
• SETXY Move the turtle to the specified x, y co-ordinates Eg. SETXY 50 50
• SETY Move the turtle to the specified y co-ordinate, e.g. SETY 50
• SHAPE - Output number of current sprite's shape
• SHOWTURTLE [ST] - Make turtle visible
• SPLITSCREEN - Mixed graphics and text screen (same as pressing F3)
• STAMPCHAR - Make the turtle stamp a character at the current location, e.g. STAMPCHAR "A
• TELL - Tell designated sprite to receive commands, e.g. TELL 2
• TEXTSCREEN - Use whole screen for text (same as pressing F1)
• TOWARDS - Output heading for turtle to face an X,Y coordinate, e.g. TOWARDS 0 0
• WRAP - Make turtle drawings wrap around the screen
• XCOR - Output current x co-ordinate of turtle
• YCOR - Output current y co-ordinate of turtle
• ASPECT - Set verticle screen scale factor, default is 0.76

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Samples taken directly from website: http://gaza.freehosting.net/logo/index.html

Answer 2

Logo is all about moving the turtle... you give it commands like this:

Forward 100
Right 45

You can do stuff like repeating commands too:

Repeat 8 [Forward 100 Right 45]  ; Draw an octagon

(What do I win? 8-)

Answer 3

Whoa! Is it still around?

fd 300 // Forward
rt 90  // Right 90°
fd 300 
lt 90  // Left 90°

That used to work.

Answer 4

I've seen a few LOGO implementations where you can use localized commands like:

• NAPRZOD (FORWARD),
• LEWO (LEFT),
• PRAWO (RIGTH)

or even NAPRZÓD (with Polish letter Ó).

LOGO is nice language to teach kids programming in their native spoken language.

Answer 5

try: bk(back), fd(forward), ld(left turn in degrees), rt(right turn).

Answer 6

By issuing commands in the correct syntax. E.G.:

forward 100

There is only one necessary command to move the turtle. It is forward which has the mnemonic fd. When working with a robot (real) turtle as opposed to a graphics based (virtual) one, you might find that the turning commands left and right [lt & rt] move the turtle a little, accidentally.

Most implementations also allow the command backwards [bk].

When the turtle moves, it may draw a line as it goes depending on whether the pen is up or down at the time, and whether the current pen color is different from the background color.

A graphics based (virtual) turtle can also jump around the screen with setx, sety, and setxy