Re: Finding the sprite from the member

[Irv Kalb]

The problem is that you can have the same member in one or more 
channels.  For example, you could have the same bitmap in channels 3 
and 10.  Here's a routine I've been using for years (notice the "set" 
statement and pre-dot syntax).  It finds the first occurance starting 
at channel 0

on FindSpriteWithName theName, fNotFoundReturnZero
  set nChannels = the lastChannel
  repeat with ch = 1 to nChannels
    if the type of the member of sprite ch <> #empty then     
      if word 1 of the name of the member of sprite ch = theName then 
-- You talking to me??
        return ch
      end if
    end if
  end repeat
  if fNotFoundReturnZero then
    return 0
  else
    alert("Could not find a sprite with the name:"  && theName)
    DebuggerBreak()
  end if
end

If you want to allow for multiple copies of the same member, change 
the above code to build up a list of channels and return it.  If the 
member is not found in any channel, it could return the empty list [].

Irv

At 3:06 PM -0700 3/11/03, Ron Woodland wrote:
A recent discussion thread discussed how to find the name of a cast 
member attached to a sprite.  That's pretty straightforward and 
answered well by several list members.

Here's a challenge that has puzzled me for a long time.  I usually 
take a coding shortcut because of time, but is there a way to find 
the sprite if the member number or name is known?

(x = the spriteNum of member "junk")

At first glance, this expression seems it would work.  Even a 
rudimentary understanding of the concept of object properties shows 
this is a ludicrous expression.  A cast member can't possibly have 
this property.  However, it seems that there should be way to 
identify which sprite is using a known cast member.

-------------------------------------------------
Ronald Woodland -- St. George, Utah  84770
-------------------------------------------------
"I long to accomplish a great and noble task, but
it is my chief duty to accomplish small tasks as
if they were great and noble."  -- Helen Keller
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