Loop with True/False?

Example: How to use a while loop with boolean return.

Setup our function for finding an image on the screen.

local func1 = function()
if region1:exists("img1.png")
then return true
end
return false
end

This will look in a predefined region, and if img1.png exists in that region, return true. Or, just return false because the image did not exist.

Now setup our main start code

--Main start--
while true do
if func1 then
-- do something
break
end --close our if
end --close our while

In this example, you begin to repeat something using, while. Then true (making it always true, so that always repeats). Do (sort of like using then, after an if statement)

if func1 then

Is saying literally if func1 returns true, then do
whatever code comes next.
vice versa using:

if not func1 then

Will fire the same way but only if it returns false.

Break
Is so you can now leave the neverending loop you just made looking for img1.

Allowing you now to move on down the line in your code.

What this loop does is continues looking for img1 till it finds it in the specified region. Once, it finds it, it breaks from the loop allowing you to contiue in your code. Like, lets say i want it to give me a toast soon as it fins it and end the code. This is what it looks like all together.

--start of lua file

local func1 = function()
if region1:exists("img1.png")
then return true
end
return false
end

--Main start--

while true do
if func1 then

toast("image found")
-- do something

break
end --close our if
end --close our while

--end of lua file

Hope this helps.