no moRE pehcils commands available include1 0,1,2,3 ... 9 Keys: Change the pen color. Zero causes the pen to erase.
C Key: Clears the screen, homes the turtle and lets you start over.
U and D Keys: Set the turtle's pen up
crease,
Increase and de
respectively,
the second house and hit "E" again. This process could be re peated as many limes as you want.
You could use different colors for each house.
The entire drawing
could then be saved as a new pro
or down, respectively.
> and < Keys:
move the turtle to where you want
the speed
(and length) of the turtle's strokes.
N Key: Asks you for a name for the current design. A new LOGO pro
X Key: Sets an x-coordinate origin by issuing a SETX to the turtle's cur rent x-coordinate.
Y Key: Sets a y-coordinate origin by issuing a SETY to the turtle's cur rent y-coordinate,
Q Key: Quits the current drawing ses
cedure by hitting the "N" key and
sion and gives you an opportunity
giving it the name "SUBURB."
to save the procedures you have created with your joystick to disk.
S Key: Saves a copy of the picture on
the screen to disk. It is saved as a "PICT" file, not as a LOGO source
WARNING:
If you answer yes to
the question, "Do you wish to save your procedures?" JOYDOODLER
name. That procedure will redraw
code file. L Key: Loads a picture from the disk
the design whenever it is executed.
to the screen. This is the reverse of
dore 64's memory and just leave
the "S" key operation.
your newly created procedures in
cedure is then created with that
T Key: Lists the titles for the designs
(procedures) you have created. E Key: Executes a procedure of your
will erase itself from the Commo
0 Key: Sets an origin for any drawing
memory. Be sure you have already
that follows by issuing a command
saved a copy of JOYDOODLER to
choice to redraw a design at the
to SETXY to the current coordi
disk before you answer yes and
current location of the turtle. For
nates of the turtle. You would use
JOYDOODLER self-destructsH!
example, you might draw a house
this command when you want a
and name it "HOUSE" by using the
design to always be drawn in a spe
these options work and how they can
"N" key. Then you could clear the
cific and absolute location on the
be used to create some great turtle
screen with the "C" key to start a
screen. Most simple designs will be
graphic drawings is to just plug in
new drawing of several houses
done without setting an origin so
You could move the turtle to where
that they can be redrawn in multi
your joystick, consult the above list and experiment. You will soon be a
you want the first house, then hit
ple locations by repositioning the
joystick expert and a turtle graphics
"E", give the name "HOUSE" as
turtle several times during the en
artist extraordinaire. And you should
the design you want to execute.
tire drawing process.
The best way to learn how all of
have a lot of fun in the process.
C
Program on next page -1
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