Need help with my program

[Turboclonerider 0]

My program is for a rail tour system, basically i have it where the redstone will activate or deactivate from one computer, but i wanted a second one to display either activated or deactivated.

[jhagrid77 4]

You have to have another GPU and bind it to the new screen so that both are displayed. (This is what I've been told.)

[dgelessus 26]

• The first line doesn't do what you think. All it does is assign the string "component.redstone" to the variable c. If you want to use the redstone component, you first have to load the component library using local component = require("component"). You'll also want to load the sides library the same way, because you later need to say what side to read the signal from.

The third line is what's causing your error. On the wiki, functions are written like getInput(side: number): number. This means that the function takes one argument of type number and returns a number. However this is not normal Lua syntax, so you cannot just copy over the function from the wiki. In your case, you'll want to call the function like local signal = component.redstone.getInput(sides.back). This calls the redstone component's function getInput and gives it the argument sides.back. We've loaded the sides library before, and sides.back is actually a number that stands for a side. The function returns the redstone signal strengh as a number, which we store in the variable signal. (If you don't assign the return value to a variable, it is "thrown away" and you cannot use it later.)

Lua is case-sensitive. If is not the same as if. if is a keyword for the if statement (which is what you want here). If is a normal variable name like any other.

= is the assignment operator, used to store something in a variable. To check if two things are equal, you need to use the equality operator ==. One equals is for storing things, two equals is for comparing them.

Unlike in some languages, in Lua the string "0" is not the same as the number 0. So if you want to check if a number is zero, you need to write if signal == 0 then etc.

[Turboclonerider 0]

Also, is there a way to make the text bigger?

[dgelessus 26]

You can use component.gpu.setResolution to reduce the resolution, which (like most real monitors nowadays) means that the text is upscaled and looks larger. This only affects the text size on the screen block in the world, in the right-click GUI for the screen it will just make the "window" smaller. You might also want to use more than one monitor block - for the default resolution I find a 3*2 screen works well.