Re: Window command

["Jeff Knope" <jknope@xxxxxxxx>]

On Dec. 13 Jim asked:
> ... is there a way to create a WINDOW command
> Any suggestions?

Hi Jim,

Besides the strategy of using trig functions to compute where the turtle 
would be (like Daniel's VirtualWindow does) there is one other approach that 
is useful in some circumstances.

If, when the project is first begun, you issue the command NEWPROJECTSIZE 
[2000 2000] you will have a working graphics field much larger than the 
screen display. With the parameters [2000 2000] the active field will be 
from -1000 to 1000 in both x and y dimensions. You can specify other 
(smaller) sizes as well.

Note, however, if you use this approach, HOME ([0 0]) will not be in the 
center of the screen. The display defaults to the upper left corner of the 
field, and you have to use the scroll bars to view other portions.

Jeff

----- Original Message ----- 
From: "Jim Weiberg" <jweiberg@xxxxxxxxxx>
To: <mwforum@xxxxxxxxxxxxxxxxxxxxxxxxxxxx>
Sent: Tuesday, December 13, 2005 8:23 AM
Subject: Window command


> I am a relatively new user of MicroworldsEX, I used to use PC Logo and 
> there
> was a WINDOW command that treated the screen as if you were looking out a
> window ... when the turtle went off of the screen, it kept going without
> wrapping.
>
> My class is in the process of programming a version of the old Q Basic
> Gorrillas game and the WINDOW command would be very helpful ... is there a
> way to create a WINDOW command or are we going to be forced into a bunch 
> of
> error checking for detecting when the turtle leaves the screen and wraps 
> and
> comes back ... it's a mess if that's what we have to do.
>
> Any suggestions?