灯光编程中Lua字符串分割为变量的实现求助

Hey there! Since you're working with GrandMA2's Lua API, splitting that string into three local variables is straightforward. Here's how you can modify your code to get exactly what you need:

First, let's break down the task simply:

• Grab the string value from your Layer1 variable
• Split it using spaces as the separator
• Assign each segment to its own named local variable

Modified Working Code #

return function ()
    local Layer1 = gma.user.getvar("Layer1") -- Retrieves "4 Mythos Stage"
    -- Split the string into three distinct parts
    local fixtureNumber, fixtureType, fixtureLocation = string.match(Layer1, "(%S+) (%S+) (%S+)")
    
    -- Test the variables to confirm they work (optional but helpful for debugging)
    gma.feedback("Fixture Number: " .. fixtureNumber)   -- Outputs "Fixture Number: 4"
    gma.feedback("Fixture Type: " .. fixtureType)       -- Outputs "Fixture Type: Mythos"
    gma.feedback("Fixture Location: " .. fixtureLocation) -- Outputs "Fixture Location: Stage"
end

How This Works: #

• The string.match function uses a pattern where %S+ matches one or more non-space characters. The parentheses () around each %S+ capture the matching segment into a separate variable.
• Since your input string has exactly three space-separated parts, this pattern perfectly maps each part to the variables you define (feel free to rename fixtureNumber, fixtureType, etc., to whatever fits your workflow best!).

Robust Alternative (For Inconsistent Spacing): #

If you ever need to handle strings with extra or inconsistent spaces, this method is more reliable. It collects all non-space segments into a table first, then assigns them to variables:

return function ()
    local Layer1 = gma.user.getvar("Layer1")
    local stringParts = {}
    -- Iterate through all non-space segments and add to the table
    for segment in string.gmatch(Layer1, "%S+") do
        table.insert(stringParts, segment)
    end
    -- Assign table entries to local variables
    local fixtureNumber, fixtureType, fixtureLocation = stringParts[1], stringParts[2], stringParts[3]
    
    gma.feedback("Split Result: " .. fixtureNumber .. ", " .. fixtureType .. ", " .. fixtureLocation)
end

This second approach works even if there are multiple spaces between parts, but for your specific use case, the first method is simpler and more direct.

内容的提问来源于stack exchange，提问作者Martijn van Dam