input - lua - 限制输入文本的字符 - love2d

Question

我有一个功能，允许我在一行中添加和删除字符，我想将其限制为大约 10 个字符

function love.keypressed(key, unicode)
    if key == "backspace" or key == "delete" then
        player = string.sub(player, 1, #player-1)
    elseif unicode > 31 and unicode < 127 then
        player = player .. string.char(unicode)
    end
end

Answer 1

如果字符串太长，您能否通过不添加到字符串来限制长度？还是你追求别的？

function love.keypressed(key, unicode)
    if key == "backspace" or key == "delete" then
        player = string.sub(player, 1, #player-1)
    elseif unicode > 31 and unicode < 127 and #player <=10 then
        player = player .. string.char(unicode)
    end
end