Drag and Drop

#1 T2D Tutorial Mouse Object Selection and Moving
T2D Tutorial Mouse Object Selection and Moving Part 2
T2D Tutorial Mouse Object Selection and Moving Part 3

#2 Thanks King Bob!

#3 Sure :) btw the first tutorial will probably be all you need... the second one goes over a more advanced method... the third one goes over debuging info... I very much recommend them, but the simple selection 'should' work fine for what your doing

#4 I'm following the tutorial and this is what is happening to me:
in onMouseDown I have this (along with everything else above it):

if(%selected)   
   { //we then store that object as the selectedObj      
        %this.selectedObj = %obj;
        %this.objectSelected = true;
    echo("objectselected=" SPC %this.objectSelected);   
   }

and the echo shows true.

but... in onMouseDragged it echos false:

//lets store the mouses position   
   %this.mousePos = %worldPos;
   %this.objectFollowCheck();
    echo("objectselected=" SPC %this.objectseleted);

However, if I echo this in OnMouseDragged:

echo("You have dragged:" SPC %this.selectedObj.objectname);

It echos "Test Box" as expected.

As a result of all of this, my tile does not move:

function fxSceneWindow2D::objectFollowCheck()
{
    if(%this.objectSelected){   
        %obj = %this.selectedObj;      
        %mousePos = %this.mousePos;         
        %obj.setPosition(%mousePos);        
    }
}

because %this.objectSelected is not keeping its value. I'm gonna try and rewrite this to work, but I wanted you to be aware of my experience. I assume this only acts this way for me.

#5 Doh! I left out %this from objectFollowCheck()

So now it works. Very cool.

#6 Now it wont let me selet anything else. is there something special that needs done for animated sprites or mounted sprites?

#7 Remember set a property to the object you want selected... ".isSelectable = true;"

so say you have $object

$object.isSelectable = true;

$player.isSelectable = true;

or you can comment out my loop that checks if an object is selectable, though it will only pick one out of a stack of objects if they're layered :O)

#8 Yes, I did that.

For some reason, in here:

for(%i=0;%i<%objCount;%i++)   {      
       //grabing the entry corresponding to the loop      
           %obj = getWord(%objList, %i);            
           echo("You have selected:" SPC %obj);

%obj returns me the same number, no matter what guy I click. I have several rows and columns of characters in multiple layers, but its not finding the right one for some reason.

#9 I stuck in %selected = true; right after the loop and the object that gets moved is the background.... which is 1 in the list, 0 is not an object. This problem goes way beyond having my IsSelecable turned on- its not seeing my sprites at all.

#10 Right now its returning the first object in the list, which is the background... to make it select the topmost object do this

%objCount = getWordCount(%objList) - 1;
%obj = getWord(%objList, %objCount);                       
echo("You have selected:" SPC %obj);

that way it picks the last item in the list...

#11 By specifying isSelectable tells it to pick the first one with that option toggled to true...

objList = t2dSceneGraph.pickPoint(%worldPos);

can be changed to use group and layer masks

objList = t2dSceneGraph.pickPoint(%worldPos, BIT(1), BIT(1));

so you can fine tune it even more

#12 Thru tedious trial and error I narrowed it down to this:
$Character[%n].setCollisionPolyCustom(4,"-0.5 1 0.5 1 0.5 -0.7 -0.5 -0.7");

when i take that out, I can pick him up with the mouse. Ummm... I really do need to have a custom poly. I'm just grasping at straws here, but does the order of setting these properties matter?

setPosition( "0 0" );
setGroup(1 ); 
setLayer(1); 
setCollisionActive(true,true ); 
setCollisionPolyCustom(4,"-0.5 1 0.5 1 0.5 -0.7 -0.5 -0.7"); 
setCollisionMasks(BIT(2),BIT(2)); 
setCollisionCallback(true );
playAnimation($Character[%n].Taunt);

#13 One thing to keep in mind, I think the pick function works off of collision polys or bounding boxes, so if you set a custom poly you will probably have to click within that collision poly (I'm not completely sure though

your set up seems fine

#14

Quote:
Right now its returning the first object in the list, which is the background... to make it select the topmost object do this

With custom poly turned on, there's only 1 object in the list, the background.

Quote:
objList = t2dSceneGraph.pickPoint(%worldPos, BIT(1), BIT(1));

i tried that, but it still doesn't work (when using poly)

#15 If collision is active you must select the object within the collision poly

#16 My poly narrows the square around the sprite for better precision. Its not hard to click within it. I'll try adjusting the size and see what happens.

#17 Ok now I'm really confused... when i set the collision poly to this

$test.setCollisionPolyCustom( 5, "-0.9 0 0 -0.6 1 -0.3 1 0.3 0 0.5" );

it works selecting within the collision poly

when i set it to yours it doesnt

$test.setCollisionPolyCustom(4,"-0.5 1 0.5 1 0.5 -0.7 -0.5 -0.7");

#18 Very interesting...

#19 Hmm, yeah, even realtime... wonder if its some sort of bug

#20 Setting collsion poly to one from tutorial (for enemies)
click and moving
moving works
set collision to the new poly, its accepted and set
click and moving doesnt work