Make a character move to a mouse or touch then stop

Tom2012

Thought this might be helpful for some folks here...

Code to make a sprite follow each touch or click you make.

Please post any improvements or things I've got wrong... :-)

-- Add hero   local hero = Bitmap.new(Texture.new("gfx/happy-block.png")) hero:setAnchorPoint(.5,.5) stage:addChild(hero) hero:setPosition(100,100)   local move = 3; -- pixels moved each frame   local moving = false -- keep track of if ball already moving   local xTouch = 0 local yTouch = 0     -- This function moves the ball each frame   function moveHero()   -- Use trig to work out the move -- The move variable is the hypotenuse -- First work out the angle   local xDiff = xTouch - hero:getX() local yDiff = yTouch - hero:getY()   local angle = math.atan2(yDiff,xDiff)   local nextX = hero:getX() + (math.cos(angle) * move) local nextY = hero:getY() + (math.sin(angle) * move)   hero:setPosition(nextX,nextY)   -- Reached touch, stop   -- Work out the distance the claw is from hero   local dx = hero:getX() - xTouch; local dy = hero:getY() - yTouch; local distance = (dx*dx)+(dy*dy)   if(distance <= (5*5)) then   stage:removeEventListener(Event.ENTER_FRAME, moveHero) moving = false   end   end         function touchesEnd(event)   if(moving) then stage:removeEventListener(Event.ENTER_FRAME, moveHero) end   moving = true   stage:addEventListener(Event.ENTER_FRAME, moveHero) -- add event listener to move ball each frame xTouch = event.touch.x yTouch = event.touch.y     end   stage:addEventListener(Event.TOUCHES_END, touchesEnd)