User:Darkfrei/example functions

Draw grid

function draw_grid ()
	local grid_size = 20
	love.graphics.setLineWidth (1)
	love.graphics.setColor(0.25,0.25,0.25)
	local width, height = love.graphics.getDimensions( )
	for x = grid_size, width-1, grid_size do
		love.graphics.line(x, 0, x, height)
	end
	for y = grid_size, height-1, grid_size do
		love.graphics.line(0, y, width, y)
	end
end

Beep

Define it:

local rate = 44100
local length = 1/32
local tone = 440 -- Hz
local p = math.floor(rate/tone) -- 128
local soundData = love.sound.newSoundData(length*rate, rate, 16, 1)
for i=0, length*rate-1 do soundData:setSample(i, i%p>p/2 and 1 or -1) end
local source = love.audio.newSource(soundData)
local function beep() source:play() end

Call it:

beep()