Amstrad DDI-1 Computer Drive User Manual


 
setpos
(set position) Moves the turtle to the position specified in the input coordinate list.
?setpos [30 20]
st
(show turtle) Makes the turtle visible if hidden.
?ht
?fd 50
?st
tf
(turtle facts) Outputs information about the turtle. The format is: [<xcor> <ycor>
<heading> <penstate> <pencolour#n> <shownp>] where <xcor> is the turtle's x
coordinate. <ycor> is the turtle's y coordinate. <heading> indicates the compass
direction the turtle is facing. <shownp> is TRUE if the turtle is visible. <penstate>
indicates PD (pen down), PE (pen erase), PX (pen reverse), or PU (pen up).
<pencolour#n> identifies the pen's number.
?setpos[15 30]
?rt 60
?setpc 3
?pe
?ht
?tf
[15 30 60 PE 3 FALSE]
4.10.10 WORKSPACE MANAGEMENT:
er
(erase) Erases the specified procedure(s) from the workspace.
?er "square
ern
(erase name) Erases the specified variable(s) from the workspace.
?make "side[100]
?make "angle[45]
?:side :angle
[100]
[45]
?ern[side angle]
?:side
side has no value
nodes
Outputs the number of free nodes in the workspace.
?nodes
Chapter 4.17 AMSTRAD Disc Drive & Interface DDI-1 Manual