love.textinput
Available since LÖVE 0.9.0
This function is not supported in earlier versions.
Called when text has been entered by the user. For example if shift-2 is pressed on an American keyboard layout, the text "@" will be generated.
Function
Synopsis
love.textinput( text )
Arguments
string text- The UTF-8 encoded unicode text.
Returns
Nothing.
Notes
Although Lua strings can store UTF-8 encoded unicode text just fine, many functions in Lua's string library will not treat the text as you might expect. For example, #text (and string.len(text)) will give the number of bytes in the string, rather than the number of unicode characters. The Lua wiki and a presentation by one of Lua's creators give more in-depth explanations, with some tips.
The utf8 library can be used to operate on UTF-8 encoded unicode text (such as the text argument given in this function.)
On Android and iOS, textinput is disabled by default; call love.keyboard.setTextInput to enable it.
Examples
Record and print text the user writes.
function love.load()
text = "Type away! -- "
end
function love.textinput(t)
text = text .. t
end
function love.draw()
love.graphics.printf(text, 0, 0, love.graphics.getWidth())
end Print text the user writes, and erase text when backspace is pressed.
local utf8 = require("utf8")
function love.load()
text = "Type away! -- "
-- enable key repeat so backspace can be held down to trigger love.keypressed multiple times.
love.keyboard.setKeyRepeat(true)
end
function love.textinput(t)
text = text .. t
end
function love.keypressed(key)
if key == "backspace" then
-- get the byte offset to the last UTF-8 character in the string.
local byteoffset = utf8.offset(text, -1)
if byteoffset then
-- remove the last UTF-8 character.
-- string.sub operates on bytes rather than UTF-8 characters, so we couldn't do string.sub(text, 1, -2).
text = string.sub(text, 1, byteoffset - 1)
end
end
end
function love.draw()
love.graphics.printf(text, 0, 0, love.graphics.getWidth())
end 
Please login to continue.