--==============================================================
-- Imports
--==============================================================
 
local DragMgr = require( "dmc_dragdrop" )
 
-- dmc_drag_drop requires dmc_objects and dmc_utils
 
 
--==============================================================
-- Setup a Drag Initiator - areas we drag FROM
--==============================================================
 
local function dragItemTouchHandler( event )
 
        local target = event.target
 
        if event.phase == "began" then
 
                -- now tell the Drag Manager about it
                DragMgr:doDrag( target, event )
        end
 
        return true
end
 
-- this is the Drag Initiator
-- ie, the location from which we start a drag
-- like in this example, it can be a simple Corona display object
--
local dragItem = display.newRect( 0, 0, 75, 75 )
dragItem:setFillColor( 90, 170, 255 )
dragItem.x = 160 ; dragItem.y = 400
 
dragItem:addEventListener( "touch", dragItemTouchHandler )
 
 
 
--==============================================================
-- Setup a Drop Target - areas we drag TO
--==============================================================
 
-- this example is not written object-orientedly.
 
 
--== Some vars for our Drop Target
 
local theScore =  0
local textScore, updateScore
 
 
 
--== Setup Our Drop Target Callbacks
 
local dragStartHandler = function( event )
 
        -- setup feedback - We're a drop target !!
        local o = event.target
        o:setStrokeColor( 255, 50, 50 )
 
        return true
end
local dragEnterHandler = function( event )
 
        -- more visual feedback - Ready to Drop !
        local o = event.target
        o:setFillColor( 170, 225, 170 )
 
        DragMgr:acceptDragDrop()
 
        return true
end
 
--[[
local dragOverHandler = function( event )
        -- this example doesn't do anything here
        return true
end
--]]
 
-- have to declare dragExitHandler ahead
-- since dragDropHandler calls it
--
local dragExitHandler
 
local dragDropHandler = function( event )
 
        -- let's keep track of number of drops on us
        theScore = theScore + 1
        updateScore()
        dragExitHandler( event )
 
        return true
end
dragExitHandler = function( event )
 
        -- undo visual feedback from dragEnter
        local o = event.target
        o:setFillColor( 90, 170, 255 )
 
        return true
end
local dragStopHandler = function( event )
 
        -- undo visual feedback from dragStart
        local o = event.target
        o:setStrokeColor( 180, 180, 180)
 
        return true
end
 
 
 
--== Create Our Drop Target
 
local dropTarget = display.newRect( 0, 0, 125, 125 )
dropTarget:setFillColor( 90, 170, 255 )
dropTarget.x = 160 ; dropTarget.y = 200
 
 
 
--== Tell the Drag Manager about it
 
DragMgr:register( dropTarget, {
        dragStart=dragStartHandler,
        dragEnter=dragEnterHandler,
        --dragOver=dragOverHandler,
        dragDrop=dragDropHandler,
        dragExit=dragExitHandler,
        dragStop=dragStopHandler,
})
 
 
--== Setup Drop Target counter
 
updateScore = function()
        local txt = tostring( theScore )
        textScore.text = txt
        textScore.x = 160 ; textScore.y = 200
end
 
textScore = display.newText( "", 160, 160, native.systemFont, 24 )
textScore:setTextColor( 0, 0, 0, 255 )
textScore:setReferencePoint( display.CenterReferencePoint )
 
updateScore()