Hi Gunjang,
use of the case command allows you to react to a large number of values
without haviung to write if..then..else if... over and over.
Say for example you had a variable in your movie called 'gAge' and you
wanted to react on different ways depending on it's value. You would use:
on myHandler
case (gAge) of -- insert name of thing to be tested here
34: -- a value to act upon
go to frame 1
22:
exit
50:
set user = 1
65:
go the frame
otherwise: -- script to perform if none of the above is true
beep
end case -- closing case statement
end
What you test or do is completely up to you. BUT, if you want to do more
than one thing for a value, e.g. set a variable, then call a handler, then
go to a frame etc, the commands must be set out on the line below the value
as above. E.G.
34: -- value to act on
command 1
command 2
command 3
Although you don't need to do this when you are only performing one command,
eg
34: command x
90: command y
600: command a
I do it for all statements just to get in the habit.
You can also perform the same command for a range of values.. eg from some
old game script:
case (sprite(stuff[4]).frame) of
--going right to mid
1,2,3,4,5:
sendsprite(stuff[1], #direct, ((sprite(stuff[4]).frame) - 6), -3)
--mid
6,16:
sendsprite(stuff[1], #direct, 0,-3)
-- going mid to right edge
7,8,9,10,11:
sendsprite(stuff[1], #direct, ((sprite(stuff[4]).frame)-6),-3)
--going mid to left egde
17,18,19,20,21:
sendsprite(stuff[1], #direct, ((-1) - ((sprite(stuff[4]).frame) - 17))
,-3)
-- going left to mid
12,13,14,15:
sendsprite(stuff[1], #direct, (-((sprite(stuff[4]).frame) - 16)),-3)
end case
the same command is applied to the values 1,2,3,4,5 etc without doing them
all on seperate case statements.
Chuck this simpole bit of code into a movie to try it yourself:
on keydown
case (the key) of
49:
put "you pressed the spacebar"
36:
put "you pressed return"
0:
put "you pressed the a key"
37:
put "you pressed the l key"
end case
end
Leon McComish
Web Developer
email: [EMAIL PROTECTED]
Get the best free games on the web at
www.freeloader.com
freeloader.com is a division of
Pure Entertainment Games PLC
131-151 Great Titchfield Street
London W1P 8AE
tel: +44 (0)207 663 3900
fax: +44 (0)207 663 3901
[To remove yourself from this list, or to change to digest mode, go to
http://www.penworks.com/LUJ/lingo-l.cgi To post messages to the list,
email [EMAIL PROTECTED] (Problems, email [EMAIL PROTECTED])
Lingo-L is for learning and helping with programming Lingo. Thanks!]
