MIA, Ask an Expert Question

[mwforum@xxxxxxxxxxxxxxxxxx (Jeff Knope)]

Hi Ann,

There are two basically different ways to tell a turtle where to go.  One way
uses the "relative" commands: left, right, forward, and back.  All of these
are "relative" to the turtle's location or heading just before the command is
given.  The other way uses the "absolute" commands: home and setpos.  They
send the turtle to a new location not at all based on where the turtle is
before the command is given.  There are two commands that are "half-and-half":
setx and sety change the turtle's location based partly on where it is, and
partly on the coordinate value given.

These terms, "relative" and "absolute," are just my personal names for this
difference.  There may be some other established vocabulary for discussing
this that I don't know about.  

Now, about your questions:

1. You may tell a turtle to return to home, which is [0 0] in the center of
the graphics screen, or to any other setpos [x y] location.  You can tell it
to linger at its last location with a wait n, or tell it to glide n smoothly
to its original starting point.

2. Using the commands  discussed above, you may "drive" the turtle from
anywhere to anywhere, along whatever serpentine or "swimming" course you like.

3, Whether a turtle (and its shape) is "in front" of another is one of its
state properties.  You may select it by right-clicking on the turtle and
left-clicking "In Front."   There are other ways too.  You can find them in
the Help program.  

I encourage you to explore the Help program.  Kinda' like a turtle, the Help
program has different states, or "ways of being."  Which state is best to use
changes with the kind of Help you need.  It takes a little curiosity and
practice to get a handle on it.

I hope I've been helpful,
-Jeff

  ----- Original Message ----- 
  From: Ask an Expert - Question 
  To: mwforum@xxxxxxxxxxxxxxxxxx 
  Sent: Tuesday, September 30, 2003 6:11 AM
  Subject: [MWForum]MIA, Ask an Expert Question


  This is an automatic message sent from the web form at:
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  from: ann_stirling81@xxxxxxxxxxx
  date: Mon, 29 Sep 2003 23:51:40 -0600


  1. How can I make my turtle do what i have program and then return back to
the place it started its
  movement for the next child to have a turn?


  How do I make a turtle return to the place it started from after It has
finished the compand I set for it to do?


  2. How can I make a turtle swim up and down the page in water in an "s"
Shape?


  3. How do I make a turle move behind other turtles or drawn objects like
tree or water?
  Thank you for you help
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Hi Ann,

 

There are two basically different ways to tell a turtle where to go.  One way uses the "relative" commands: left, right, forward, and back.  All of these are "relative" to the turtle's location or heading just before the command is given.  The other way uses the "absolute" commands: home and setpos.  They send the turtle to a new location not at all based on where the turtle is before the command is given.  There are two commands that are "half-and-half": setx and sety change the turtle's location based partly on where it is, and partly on the coordinate value given.

 

These terms, "relative" and "absolute," are just my personal names for this difference.  There may be some other established vocabulary for discussing this that I don't know about. 

 

Now, about your questions:

 

1. You may tell a turtle to return to home, which is [0 0] in the center of the graphics screen, or to any other setpos [x y] location.  You can tell it to linger at its last location with a wait n, or tell it to glide n smoothly to its original starting point.

 

2. Using the commands  discussed above, you may "drive" the turtle from anywhere to anywhere, along whatever serpentine or "swimming" course you like.

 

3, Whether a turtle (and its shape) is "in front" of another is one of its state properties.  You may select it by right-clicking on the turtle and left-clicking "In Front."   There are other ways too.  You can find them in the Help program. 

 

I encourage you to explore the Help program.  Kinda' like a turtle, the Help program has different states, or "ways of being."  Which state is best to use changes with the kind of Help you need.  It takes a little curiosity and practice to get a handle on it.

 

I hope I've been helpful,

-Jeff

 

----- Original Message -----

From: Ask an Expert - Question

To: mwforum@xxxxxxxxxxxxxxxxxx

Sent: Tuesday, September 30, 2003 6:11 AM

Subject: [MWForum]MIA, Ask an Expert Question

This is an automatic message sent from the web form at:

http://mia.openworldlearning.org/howdoi.htm

from: ann_stirling81@xxxxxxxxxxx

date: Mon, 29 Sep 2003 23:51:40 -0600

1. How can I make my turtle do what i have program and then return back to the place it started its

movement for the next child to have a turn?

How do I make a turtle return to the place it started from after It has finished the compand I set for it to do?

2. How can I make a turtle swim up and down the page in water in an "s" Shape?

3. How do I make a turle move behind other turtles or drawn objects like tree or water?

Thank you for you help

_______________________________________________ MWForum mailing list MWForum@xxxxxxxxxxxxxxxxxx http://mia.openworldlearning.org/mwforum/ Attachments archived at: http://www.mathcats.com/mwforum/attachments.html To unsubscribe or for administrative questions contact mailto:mwforum-admin@xxxxxxxxxxxxxxxxxx