我的脚本需要帮助。
我几乎尝试了一切,但我无法弄清楚问题是什么。
我希望look.lua
检查是否str = str.."\nIt's "..getPokemonAge(thing.uid).." old."
以nil返回,然后忽略它并继续使用脚本。
这是我在控制台上遇到的错误:
[04/12/2012 20:43:42] [Error - CreatureScript Interface]
[04/12/2012 20:43:42] data/creaturescripts/scripts/look.lua:onLook
[04/12/2012 20:43:42] Description:
[04/12/2012 20:43:42] data/lib/011-string.lua:16: bad argument #1 to 'find' (string expected, got nil)
[04/12/2012 20:43:42] stack traceback:
[04/12/2012 20:43:42] [C]: in function 'find'
[04/12/2012 20:43:42] data/lib/011-string.lua:16: in function '(for generator)'
[04/12/2012 20:43:42] data/lib/011-string.lua:16: in function 'explode'
[04/12/2012 20:43:42] data/lib/age system.lua:2: in function 'getPokemonYears'
[04/12/2012 20:43:42] data/lib/age system.lua:42: in function 'getPokemonAge'
[04/12/2012 20:43:42] data/creaturescripts/scripts/look.lua:32: in function <data/creaturescripts/scripts/look.lua:1>
011-string.lua
local i, pos, tmp, t = 0, 1, "", {}
for s, e in function() return string.find(str, sep, pos) end do
tmp = str:sub(pos, s - 1):trim()
table.insert(t, tmp)
pos = e + 1
i = i + 1
end
look.lua
str = str.."\nIt's "..getPokemonAge(thing.uid).." old."
age system.lua
function getPokemonYears(pokeball)
local data = string.explode(getItemAttribute(pokeball, "pokeballinfo"), "/")
-- data[1] = dia, data[2] = mes, data[3] = ano
local yearnow = math.floor(tonumber(os.date("%Y")))
local monthnow = math.floor(tonumber(os.date("%m")))
local daynow = math.floor(tonumber(os.date("%d")))
local ano = math.floor(tonumber(data[3]))
local mes = math.floor(tonumber(data[2]))
local dia = math.floor(tonumber(data[1]))
local years = 0
if yearnow == ano then years = monthnow-mes end
if yearnow > ano then years = (12-mes) + monthnow end
return years
end
function getPokemonMonths(pokeball)
local data = string.explode(getItemAttribute(pokeball, "pokeballinfo"), "/")
local yearnow = math.floor(tonumber(os.date("%Y")))
local monthnow = math.floor(tonumber(os.date("%m")))
local daynow = math.floor(tonumber(os.date("%d")))
local ano = math.floor(tonumber(data[3]))
local mes = math.floor(tonumber(data[2]))
local dia = math.floor(tonumber(data[1]))
if (yearnow == ano) and (monthnow==mes) and (daynow<dia+2.5) then months = 0 end
if (yearnow == ano) and (monthnow==mes) and (daynow>dia+2.5) then months = (daynow-dia)/2.5 end
if (yearnow == ano) and (monthnow>mes) then months = math.floor((30-dia)/2.5) + daynow/2.5 end
if (yearnow > ano) then
days = math.floor(monthnow*30+daynow)
months = math.floor(days/2.5)
end
if tostring(months):len() > 3 then months2 = tonumber(string.sub(tostring(months), 1, 3))
else months2 = months end
return months
end
function getPokemonAge(pokeball)
return ""..getPokemonYears(pokeball).." year, "..getPokemonMonths(pokeball).." months"
end
答案 0 :(得分:1)
我想我终于理解了你的问题,所以我会重新理解我的理解,你可以判断这是否是你想要的。
据我了解,您知道您的函数getPokemonAge
有时会导致错误。其他几位同事指出,此错误来自getItemAttribute(pokeball, "pokeballinfo")
返回nil
。
现在我认为您希望程序在生成文本时返回文本,但要忽略可能发生的任何错误,并在出现错误时返回nil
。
这可以通过pcall(look here)完成。
在我对你的getPokemonAge-Function的部分重写中,我用pcall调用getPokemonAgeInternal
(这是你的原始函数)。然后我只检查结果并在出错时返回nil
。
function getPokemonAgeInternal(pokeball)
return ""..getPokemonYears(pokeball).." year, "..getPokemonMonths(pokeball).." months"
end
function getPokenmonAge(pokeball)
success, value = pcall( getPokemonAgeInternal, pokeball )
if ( success )
then
return value
else
return nil
end
end
您可以将相似的代码应用于getPokemonYears
- 功能,如果您想保护它免受错误的影响。
如果您的错误始终来自getItemAttribute(pokeball, "pokeballinfo")
nil
,则不应使用pcall,而只需检查该条件并在getItemAttribute(pokeball, "pokeballinfo") == nil
时返回nil。