Time for action – drawing the background

In this section, we'll fill the screen with our environment display objects. This includes our background and ground objects, and we can also add physical elements to our ground so that we can designate collision events for it. To draw the background, perform the following steps:

1. Create a local function called drawBackground():

       local drawBackground = function()

2. Add in the background image:

         background = display.newImageRect( "bg.png", 480, 320 )
         background.x = 240; background.y = 160
         gameGroup:insert( background )

3. Add in the ground elements and create the ground physical boundary. Close the function:

         ground = display.newImageRect( "grass.png", 480, 75 )
         ground.x = 240; ground.y = 325
         ground.myName = "ground"
         local groundShape = { -285,-18, 285,-18, 285,18, -285,18}
         physics.addBody( ground, "static", { density=1.0, bounce=0, friction=0.5, shape=groundShape } )
         gameGroup:insert( ground )
       end

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