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Swapping Image *Positions*

Swapping Image *Positions*

Swapping Image *Positions*

(OP)
Greetings all---new forum member here...

I am hitting a wall as to how to achieve the following in Director (I'm using 8.5):

I have 7 objects on the stage, and I want the user to be able to click two of them, have them each "highlight" (or otherwise show their status as "selected"), then, when a button is pressed (one which says, "Swap" or a synonym), the two selected objects trade positions.  To complicate things further, I need the two objects to trade their positions *visibly*---not as an instantaneous "flip," but, rather, the user can see the first object travel to the second's position and vice versa.

I've only got rudimentary Lingo expertise and I'm fearing that I'm out of my depth here.

Any help that can be offered would be greatly appreciated.



Regards,

Adam
Los Angeles, CA

RE: Swapping Image *Positions*

Let's start with the simplest example: swap locations of two objects.

The set up:
Place one object in Sprite 1, another object in Sprite 2. Place "Swap" button in Sprite 3.

The scripts:
1. Movie script:
--
on prepareMovie
  global gSwapPList
  gSwapPList = [:]
end prepareMovie
--


2. Behaviour script attached to the "Swap" button:
--
on mouseUp me
  global gSwapPList
  if gSwapPList.length < 1 then
    gSwapPList = [#1: [#sprite: 1, #x: sprite(1).locH, #y:sprite(1).locV], #2: [#sprite: 2, #x: sprite(2).locH, #y: sprite(2).locV]]
  end if
end mouseUp
--


3. Frame script:
--
on exitFrame me
  global gSwapPList
  if gSwapPList.count > 1 then
    spriteA = sprite(gSwapPlist[#1][#sprite])
    spriteATargetLocH = gSwapPlist[#2][#x]
    spriteATargetLocV = gSwapPlist[#2][#y]
    if spriteA.locH <> spriteATargetLocH then
      spriteA.locH = spriteA.locH + (spriteATargetLocH - spriteA.locH)/10
    end if
    if spriteA.locV <> spriteATargetLocV then
      spriteA.locV = spriteA.locV + (spriteATargetLocV - spriteA.locV)/10
    end if
    spriteB = sprite(gSwapPlist[#2][#sprite])
    spriteBTargetLocH = gSwapPlist[#1][#x]
    spriteBTargetLocv = gSwapPlist[#1][#y]
    if spriteB.locH <> spriteBTargetLocH then
      spriteB.locH = spriteB.locH + (spriteBTargetLocH - spriteB.locH)/10
    end if
    if spriteB.locV <> spriteBTargetLocV then
      spriteB.locV = spriteB.locV + (spriteBTargetLocV - spriteB.locV)/10
    end if
  end if
  go the frame
end
--

Kenneth Kawamoto
www.materiaprima.co.uk

RE: Swapping Image *Positions*

(OP)
Dear Kenneth:

Apologies for the one-week delay---I got sidetracked by totally unrelated projects...

Returning to this matter today, I found your post to be very smart, clean, simple, clear, and (as it turns out), highly effective.

It has served not only to solve my problem but as a Lingo programming lesson all of its own.  It has helped me to deepen my understanding of how Lingo works with lists, handlers, etc.  I am extremely grateful.


Warmest regards,

Adam LeBow
Los Angeles, CA, USA

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