Scratch

I'm pretty sure it can be done.  First, define a sprite specific variable, maybe called "Selected" on each of the selectable sprites.  You can then define actions that happen to the sprites (movement, whatever) that are initiated by keys or messages but will only happen if the individual sprite has a Selected value of 1.  You should also have the selectable sprites change apperance somehow when they are selected.

So then the task is to change the state of the Selected variable for the desired sprites.  A simple approach would be to allow the user to build a collection of selected sprites by clicking on each sprite individually.  Not as elegant as a selection rectangle, but easier to do.  The selection rectangle could be done using the pen, I suppose, and remembering a couple of mouse click positions.  Then, you would have to write the logic to decide if each sprite is "inside" or "outside" the rectangle, by testing the positions.

Here's one way to do it that seems to work, and which follows Paddle2See's suggestion:

http://scratch.mit.edu/projects/chalkmarrow/274109

Last edited by chalkmarrow (2008-09-25 14:58:27)

... And the one I made before I saw Paddle2see's 

http://scratch.mit.edu/projects/JSOlabs/274142

It's almost exactly the same...

Do you have the latest version of Scratch?  That could cause the bad-header message.  Cool projects!