Drag & Drop

 

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Drag adn Drop behavior

property TargetSprite -- target sprite for the dragged sprite property startPos -- starting poition of the dragged sprite property correctspringBack --  does the dragged sprite spring back to startpos --  when released on target? (T/F) property incorrectspringBack --  does the dragged sprite spring back to startpos --  when released off  target? (T/F) property incorrectvanish --  does the dragged sprite vanish when released off target? (T/F) property correctvanish --  does the dragged sprite vanish when released on target? (T/F) property IncorrectCommand -- name of the handler to run if sprite dropped on target property correctCommand -- name of the handler to run if sprite dropped off target -- end property declaration on mousedown me      -- get start point of dragged sprite   set startpos = the loc of sprite (the spritenum of me)      -- move the sprite with the mouse   repeat while the stilldown = true     set the loc of sprite (the spritenum of me) = point(the mouseh, the mousev)     updatestage   end repeat    end on mouseup me   -- check to see if the MOUSE is inside the target sprite   -- when released   if inside(point(the mouseh, the mousev), the rect of sprite (the targetSprite of me)) then          -- run the handler specified for a correct drop     do the correctCommand of me          -- if the dragged sprite should vanish then do that     if the correctvanish of me = 1 then       -- send the dragged sprite off screen       set the loc of sprite the spritenum of me = point(1000,1000)       exit     end if     -- sets the dragged sprite back to starting position     if the correctspringback of me  = 1 then       set the loc of sprite (the spritenum of me) = startpos     end if   else     -- it was dropped off the target sprite          do the incorrectCommand of me     -- if the dragged sprite should vanish then do that     if the incorrectvanish of me = 1 then       -- send the dragged sprite off screen       set the loc of sprite the spritenum of me = point(1000,1000)       exit     end if     -- sets the dragged sprite back to starting position     if the incorrectspringback of me  = 1 then       set the loc of sprite (the spritenum of me) = startpos     end if        end if    end on getBehaviorDescription   return¬ "Creates sprites that can be dropped on any other [user specified] sprite. You can define the target sprite, "&& RETURN &¬ "whether the dragged sprite snaps back to it"s start position, and handlers to run if the drop was on or off target."    end on getPropertyDescriptionList      if voidp(TargetSprite) then set TargetSprite = 1      set p_list = [#TargetSprite: [ #default:TargetSprite,#format:#integer, #comment:"Target Sprite Number", #range:[#min:1,#Max:120]],¬   #incorrectspringBack:[#default:1,#format:#boolean,#comment:"Spring back when incorrect?"],¬   #correctspringBack:[#default:0,#format:#boolean,#comment:"Spring back when correct?"],¬   #incorrectvanish:[#default:0,#format:#boolean,#comment:"Vanish when dropped off the target?"],¬   #correctvanish:[#default:1,#format:#boolean,#comment:"Vanish when dropped on the target?"],¬ #correctCommand:[#format:#string,#comment:"The handler to run if dropped off the target",#default:"beep" ],¬ #IncorrectCommand:[#format:#string,#comment:"The handler to run if dropped on the target",#default:"beep 2" ]]   return p_list   end