formatting changes and switching to local variables

rhythmblock.lua

@@ -1,32 +1,32 @@
 -- Change these lines to change the GUI colors.
-accentColor = colors.gray 
-buttonColor = colors.lightGray
-textColor = colors.lightGray
-altTextColor = colors.gray
-backgroundColor = colors.black
+local accentColor = colors.gray 
+local buttonColor = colors.lightGray
+local textColor = colors.lightGray
+local altTextColor = colors.gray
+local backgroundColor = colors.black
 
 -- Code starts from here
 
 function round(n) -- We need a function to round the center of the terminal
     return n % 1 >= 0.5 and math.ceil(n) or math.floor(n)
 end
-width, height = term.getSize() -- Gets the terminal size to determine the center
-centerWidth = round(width / 2) -- Defines the horizontal center
-centerHeight = round(height / 2) -- Defines the vertical center
+local width, height = term.getSize() -- Gets the terminal size to determine the center
+local centerWidth = round(width / 2) -- Defines the horizontal center
+local centerHeight = round(height / 2) -- Defines the vertical center
 
 if arg[1] == nil then
-	peripherals = peripheral.getNames() -- Gets peripherals to check if any disk drives are avavailable
+	local peripherals = peripheral.getNames() -- Gets peripherals to check if any disk drives are avavailable
 	if #peripherals == 0 then
 		term.setTextColor(colors.red)
-		print "No drive"
+		print("No drive")
 		return false -- Exits if there's no disk drive
 	else
 		driveCount = 0
 		for n = 1, #peripherals do
 			local driveCheck = peripherals[n]
 			if peripheral.getType(driveCheck) == "drive" then
-				drive = driveCheck
-				driveCount = driveCount + 1
+				local drive = driveCheck
+				local driveCount = driveCount + 1
 			end
 		end
 		if driveCount > 1 then
@@ -35,7 +35,7 @@ if arg[1] == nil then
 			return false	
 		elseif driveCount == 0 then
 			term.setTextColor(colors.red)
-			print "No drive"
+			print("No drive")
                 	return false -- Exits if there's no disk drive
 		end
 	end
@@ -46,25 +46,25 @@ end
 --[[ Instead of calling every status by string, we call the variables storing the strings. This may ease translation if we plan to do it in the future.
 ]]
 
-defaultStatus = "Rhythmblock"
-invalidFormatStatus = "Not a music disc"
-noDiscStatus = "No disc"
-noAudioStatus = "No audio is playing"
-ejectText = "Eject"
+local defaultStatus = "Rhythmblock"
+local invalidFormatStatus = "Not a music disc"
+local noDiscStatus = "No disc"
+local noAudioStatus = "No audio is playing"
+local ejectText = "Eject"
 
 function playDisc()
 	term.clear()
 	if disk.isPresent(drive) and disk.hasAudio(drive) then -- Determines if there's a disc or not and if it's a music disc
         	disk.playAudio(drive)
 		buttonRender(true)
-		playing = true
-		status = disk.getAudioTitle(drive)
+		local playing = true
+		local status = disk.getAudioTitle(drive)
 		buttonRender(true)
 	elseif disk.isPresent(drive) then
-        	status = invalidFormatStatus
+        	local status = invalidFormatStatus
 		buttonRender(false)	
 	else -- If none of these checks are passed then it just means there's no disc in the drive.
-        	status = noDiscStatus
+        	local status = noDiscStatus
 		buttonRender(false)
 	end
 end
@@ -72,19 +72,19 @@ end
 function ejectDisc() -- Ejects the disc! How cool is that?
 	term.clear()
 	buttonRender(false)
-	if playing == true then
+	if playing then
 		stopDisc()
 		disk.eject()
 	elseif disk.isPresent(drive) then -- If there's a disc, it'll be ejected.
 		disk.eject(drive)
 	else -- If not it'll report there's no disc.
-		status = noDiscStatus
+		local status = noDiscStatus
 	end
 end
 
 function stopDisc() -- Stops the music
 	playing = false
-	status = defaultStatus
+	local status = defaultStatus
 	disk.stopAudio(drive)
 	term.clear()
 	buttonRender(false)
@@ -118,7 +118,7 @@ function renderCloseButton() -- Renders the Close button
 end
 
 function buttonRender(play) -- Render some buttons depending if the computer is advanced or not
-        if play == true then
+        if play then
                 renderStopButton()
         else
                 renderPlayButton()
@@ -139,7 +139,7 @@ end
 term.clear()
 term.setBackgroundColor(backgroundColor) -- Setting the background color
 buttonRender(false)
-status = defaultStatus -- Setting the value to the default
+local status = defaultStatus -- Setting the value to the default
 
 while true do
     statusRender(status) -- Renders the status
@@ -148,7 +148,7 @@ while true do
    
     if event == "mouse_up" then -- If the event triggered is the mouse clicking it'll do what's next
 	if eventData[2] == 1 and eventData[3] >= centerWidth - 4 and eventData[4] >= centerHeight - 4 and eventData[3] <= centerWidth + 4 and eventData[4] <= centerHeight + 2 then -- If the user clicks on the play/stop button it'll begin playing the disc 
-                if playing == true then
+                if playing then
                         stopDisc()
                 else
                         playDisc()
@@ -163,7 +163,7 @@ while true do
     elseif event == "key_up" then -- Same order but now with keys
 	local name = keys.getName(eventData[2]) or "unknown key"
     	if name == "space" then
-                if playing == true then
+                if playing then
                         stopDisc()
                 else
                         playDisc()