Mark's coding playground...

local Group1 = display.newGroup() This creates a new display group by the name of Group1. You can then add display objects to it.You should declare them near the top of your Lua document.You should create display groups in a specific order. The first declared group will actually reside behind the next group in visually layered order. local farBackground = display.newGroup() local nearBackground = display.newGroup() --this will overlay 'farBackground' local foreground = display.newGroup() --and this will overlay 'nearBackground'

The table constructor is written using braces (curly brackets) as in { } t = {} -->create a table k = "x" t[k] = "tabvalue" --new table entry, -->with key="x" and value=2.4 print( t[k] ) --> 2.4 print( t["x"] ) --> 2.4 print( t.x ) --> 2.4 t[2] = "tabval2" --new table entry, -->with key=2 and value="tabval2" t[3]= 2.4 print( t[2] ) --> "tabval2" print( t[3] )

Using functions are very eazy in Lua.We can provide arguments as input (within the parentheses), the function performs some tasks, and the results can be returned. Some ways to define functions are: local function f () --body end local f = function() --body end function f () --body end f = function () --body end