display.setStatusBar( display.HiddenStatusBar )         -- hide status bar
 
-- Create a circle that moves with Accelerator events (for visual effects)
--
local centerX = display.contentWidth / 2
local centerY = display.contentHeight / 2
w = display.contentWidth
h = display.contentHeight
print(w .. h)
 
Circle = display.newCircle(0, 0, 20)
Circle.x = centerX
Circle.y = centerY
Circle:setFillColor( 0, 0, 255 )                -- blue
 
local function onAccelerate( event )
 
        frameUpdate = false             -- update done 
        
        -- Move our object based on the accelerator values
        if(Circle.x < 1) then
                Circle.x = 0
        elseif (Circle.x > w-3) then
                Circle.x = w
        else            
                Circle.x = centerX + (centerX * event.xGravity)
                circlex.text = Circle.x .. " : " .. event.xGravity
        end
        
        if(Circle.y < 1) then
                Circle.y = 0
        elseif (Circle.y > h-3) then
                Circle.y = h
        else
                Circle.y = centerY + (centerY * event.yGravity * -1)
                circley.text = Circle.y .. " : " .. event.yGravity
        end     
 
        -- Display message and sound beep if Shake'n
        if event.isShake == true then
                -- str, location, scrTime, size, color, font
                media.playEventSound( soundID )
        end
end
 
local function onFrame()
        frameUpdate = true
end
 
circlex = display.newText("X:" .. Circle.x,5,25)
circley = display.newText("Y:" .. Circle.y,5,45)
 
Runtime:addEventListener ("accelerometer", onAccelerate);
Runtime:addEventListener ("enterFrame", onFrame);