Move - AMSTRAD cpc 6128 User Instruction

5 cLs
10 pLot 10,10
20 draw 10,390
30 draw 630,390
40 draw 630,10
50 draw 10,10
60 go to 60
run
Press [ESe] twice to break from this program.
(Notice line 60 of this program; the computer is told to 'loop' around line 60 again
and again, until you 'break' from the program by pressing
[ESe]
twice. This sort of
instruction is useful if you do not want the computer to automatically 'break' at the
end of a program and display the Rea d y prompt that usually appears on the screen.)
Now add the following lines to the program, to draw a second rectangle inside the
first. Type in:
60 pLot 20,20
70 draw 20,380
80 draw 620,380
90 draw 620,20
100 draw 20,20
110 goto 110
run
Again, press [ESe] twice to break from this program.
MOVE
The M 0 V E command operates in a similar manner to PLO T, in that the graphics
cursor is moved to the position specified by the x,y co-ordinates; however the pixel
(dot) at the new graphics cursor location is NOT plotted.
Type in:
cLs
move 639,399
Although we can see no sign of it on the screen, we have moved the graphics cursor to
the top right corner.
Let's prove it by drawing a line from that position to the centre of the screen, by
typing in:
draw 320,200
Foundation Course
Chapter 1 Page 59