PICO-8 Boilerplate

game.p8

pico-8 cartridge // http://www.pico-8.com
version 8
__lua__
-- game boilerplate
-- by murilo

-- Game states
game_mode = "splash"

-- Event manager
function event( e, v )
	if e == "hello" then
		print "hello world!"
	elseif e == "game:start" then
		game_mode = "game"
	elseif e == "game:over" then
		game_mode = "gameover"
	elseif e == "game:reset" then
		game_mode = "splash"
	else
		print( e )
	end
end

-- Keyboard listener
function controls_splash()
	if btnp( 0 ) 
		or btnp( 1 ) 
		or btnp( 2 ) 
		or btnp( 3 )
		or btnp( 4 ) 
		or btnp( 5 ) 
	then
		print "start game"
		event( "game:start" )
	end
end

function controls_gameover()
	if btnp( 0 ) 
		or btnp( 1 ) 
		or btnp( 2 ) 
		or btnp( 3 )
		or btnp( 4 ) 
		or btnp( 5 ) 
	then
		print "reset game"
		event( "game:reset" )
	end
end

function controls_game()
	if btnp( 0 ) then
		event( "p1:left" )
	end
	if btnp( 1 ) then
		event( "p1:right" )
	end
	if btnp( 2 ) then
		event( "p1:up" )
	end
	if btnp( 3 ) then
		event( "p1:down" )
	end
	if btnp( 4 ) then
		event( "p1:o" )
		event( "hello" )
	end
	if btnp( 5 ) then
		event( "p1:x" )
		event( "game:over" )
	end
end

-- Draw game modes
function draw_splash()
	print "splash - press any key to start"
end

function draw_gameover()
	print "game over - press any key to reset"
end

function draw_game()
	
end
------------------------

-- Update game modes
function update_splash()
	
end

function update_gameover()

end

function update_game()
	
end
------------------------

-- Runtime methods
function _init()

end

function _update()
	if game_mode == "splash" then
		controls_splash()
		update_splash()
	elseif game_mode == "gameover" then
		controls_gameover()
		update_gameover()
	elseif game_mode == "game" then
		controls_game()
		update_game()
	end
end

function _draw()
	if game_mode == "splash" then
		draw_splash()
	elseif game_mode == "gameover" then
		draw_gameover()
	elseif game_mode == "game" then
		draw_game()
	end
end