LÖVE

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require "path.to.Polygamy.init" -- must be outside the load callback.
                                -- since it creates a custom love.run loop

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local state, goto, pkeyboard = Polygamy.state, Polygamy.state.goto, Polygamy.keyboard   
-- Load your ressources, initialize your code... then : 

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title = state( "Title Screen" )
              --============--

function title.before() pkeyboard.use( "title" ); print"menu" end
function title.update(dt)  --[[ your title update callback ]] end
function title.draw()      --[[ draw your fine title here  ]] end

pkeyboard( "title" ):setConfig( "pressed", {
	[{" ", "return"}] = function() goto("In Game")       end,
	escape            = function() love.event.push('q') end,
})

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ingame = state( "In Game" )
               --=======--

function ingame.before( from, to, ... )
	if from == "Title Screen" then --[[Game.state.reset()]] end
	Polygamy.timer:resume()
	pkeyboard.use( to ) -- to == "In game" in this case
	print "In Game"
end

function ingame.update( dt ) --[[ instill life in your game world ]] end

function ingame.draw()   --[[ and render it in its full glory ]] end

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function ingame.after( from, to, ... )
	Polygamy.timer:pause()	
	if to == "Pause Screen" then
		-- dim the screen, take a screenshot
	end
end

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pkeyboard("In Game"):setConfig("pressed", {
	
	[" %arrows "] = { held = function(key,_,_,dt) Hero:move(key,dt); end },
	[" "]  = function() Hero:shoot()           end,
	escape = function() goto( "Title Screen" ) end,
	p      = function() goto( "Pause Screen" ) end
})

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pause = state( "Pause Screen" )
                   --============--
function pause.before() pkeyboard.use( "pause" ); print"Pause" end
function pause.update(dt) end -- if you don't define it, the previous callback remains active.
function pause.draw() --[[ display "Paused" on top of the screenshot.]] end


pkeyboard( "pause" ):setConfig( "pressed", {
	escape = function() goto( "Title Screen" ) end,
	p      = function() goto( "In Game" )      end
})

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function love.load() 
	goto("Title Screen") 
	print"Start" 
end

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Polygamy.keyboard("ingame"):setconfig( "held", {
	left  = function(dt) hero.position=hero.position - dt * 10 end,
	right = function(dt) hero.position=hero.position + dt * 10  end,
	up    = hero.jump 
	[" "] = {
		pressed  = hero.shoot,
		held     = hero.accumulateEnergy,
		released = hero.unleashDevastativeBlow
	},
	esc   = {pressed = game.pause},
	[Polygamy.default] = function(key) menu.type(key) end -- useful if the current field is a text field.
} )

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Polygamy.keyboard.use( "configuration handle" )

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Polygamy.keyboard("the Lost Vikings, in game"):setConfig( "pressed", { esc = pause } )

for _, viking in ipairs[ olaf, eric, baleog ] do
	Polygamy.keyboard( viking ):setConfig("held", {  -- You can use any type of object as a configuration name.
		[ "%arrows" ] = viking.move -- expanded to "up", "down", "left" and "right"
                                    -- these strings are passed to viking.move
		[" "] = viking.action
	})
	Polygamy(viking):setParent("the Lost Vikings, in game")
end

Polygamy.keyboard.use( olaf ) -- the keys move Olaf, esc pauses the game
Polygamy.keyboard.use( erik ) -- now Erik is active, and esc still works.

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Polygamy.keyboard("default"):setConfig("pressed",{
	[Polygamy.delault] = {
		pressed  = function(key) --[[ your code here ]] end,
		released = function(key) --[[ your code here ]] end 
	}
})

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{
	key = {
		pressed = function( key, row, column, unicode ) ... end,
		released = function( key, row, column ) ... end,
		held = function( key, row, column, dt ) ... end
	},
	key = function(key, row, column, [ unicode | dt ]) ... end, -- the function is assigned to the default action.
                         -- "dt" is only relevant if the default mode is "held".
	key = "whatever except a function or a table", -- deletes the key.
	[Polygamy.default] = any of the above.
}

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PoG.default={}
PoG.K.addPartner("ingame", {
	key = {
		pressed=function() ... end,
		released=...
	},
	key = ...,
	[PoG.default] = ... -- default behaviour
}