Scripting Book/Chapter 8
Now we're going to learn about pcall. This will help check our script's sources before we run them through the loadstring function.
How it works
Pcall checks that the script is error-less and won't cause the whole script to crash.
Let's begin
Previous script
code = [[ p = Instance.new("Part", game.Workspace) p.Anchored = true ]]
loadstring(code)()
Checking it with pcall
Step 1
First of all we need to start an 'if' statement,
if
Step 2
Now we need to add in the pcall function containing one argument, which will be the start of a function(), after the function we need to remove the variable name and the '[[' and ']]'s from around the source.
if pcall(function() p = Instance.new("Part"), game.Workspace) p.Anchored = true
Step 3
Now we need to end the function and close the remaining braket and add the 'then'.
if pcall(function() p = Instance.new("Part", game.Workspace) end) then
Step 4
Next we need an 'else', just incase the source has an error in it
if pcall(function() p = Instance.new("Part", game.Workspace) p.Anchored = true end) then
else
Step 5
Finally we need to print some text in output saying it is broken, and we need an 'end' to end the 'if' statement.
if pcall(function() p = Instance.new("Part", game.Workspace) p.Anchored = true end) then
else
print("The source has an error.")
end
The finished script
Here's the finished script:
if pcall(function() p = Instance.new("Part", game.Workspace) p.Anchored = true end) then
else
print("The source has an error.")
end
