function onTick()
	-- Read the touchscreen data from the script's composite input
	inputX = input.getNumber(3)
	inputY = input.getNumber(4)
	isPressed = input.getBool(1)
	Speed = input.getNumber(8)
	Depth = input.getNumber(9)
	Zoom = input.getNumber(10)


	-- Check if the player is pressing the rectangle at (10, 10) with width and height of 20px

	isPressingRectangleSwitch = isPressed and isPointInRectangle(inputX, inputY, 5, 5, 5, 5)
	isPressingIRSwitch = isPressed and isPointInRectangle(inputX, inputY, 15, 5, 5, 5)
	isPressingTriangleUp = isPressed and isPointInRectangle(inputX, inputY, 3, 15, 10, 10)
	isPressingTriangleDown = isPressed and isPointInRectangle(inputX, inputY, 3, 25, 10, 10)
	isPressingZoomPlus = isPressed and isPointInRectangle(inputX, inputY, 18, 15, 6, 6)
	isPressingZoomMinus = isPressed and isPointInRectangle(inputX, inputY, 18, 25, 6, 6)

	--output checks
	output.setBool(1, isPressingRectangleSwitch)
	output.setBool(3, isPressingIRSwitch)
	output.setBool(4, isPressingZoomPlus)
	output.setBool(5, isPressingZoomMinus)



	if not isPressingTriangleUp and not isPressingTriangleDown then output.setNumber(2, 0)
		end

	if isPressingTriangleUp then
		output.setNumber(2, 1)
		end
	if isPressingTriangleDown then
		output.setNumber(2, -1)
		end
	end

-- Returns true if the point (x, y) is inside the rectangle at (rectX, rectY) with width rectW and height rectH
function isPointInRectangle(x, y, rectX, rectY, rectW, rectH)
	return x > rectX and y > rectY and x < rectX+rectW and y < rectY+rectH
end

function onDraw()
	-- Draw a rectangle that fills in when the player is pressing it
	screen.setColor(255, 255, 255)
	if isPressingRectangleSwitch then
		screen.drawRectF(5, 5, 5, 5)
	else
		screen.drawRect(5, 5, 5, 5)
	end

	if isPressingTriangleUp then
		screen.drawTriangleF(7, 13, 3, 21, 12, 21)
	else
		screen.drawTriangle(7, 13, 3, 21, 12, 21)
	end

	if isPressingTriangleDown then
		screen.drawTriangleF(7, 33, 3, 25, 12, 25)
	else
		screen.drawTriangle(7, 33, 3, 25, 12, 25)
	end
	if isPressingIRSwitch then
		screen.drawRectF(15, 5, 5, 5)
	else
		screen.drawRect(15, 5, 5, 5)
	end
	if isPressingZoomMinus then
		screen.setColor(255, 0, 0)
		screen.drawRectF(18, 25, 6, 6)
	else
		screen.setColor(255, 0, 0)
		screen.drawRect(18, 25, 6, 6)
	end
	if isPressingZoomPlus then
		screen.setColor(0, 255, 0)
		screen.drawRectF(18, 15, 6, 6)
	else
		screen.setColor(0, 255, 0)
		screen.drawRect(18, 15, 6, 6)
	end



	screen.drawText(0, 0, "CAM")
	screen.drawText(17, 0, "IR")
	screen.setColor(255, 0, 0)
	screen.drawText(70, 0, "Speed")
	screen.drawText(70, 6, round(Speed))
	screen.setColor(0, 0, 255)
	screen.drawText(70, 11, "Depth")
	screen.drawText(70, 15, round(Depth))
	screen.setColor(0, 255, 255)
	screen.drawText(30, 5, round2(Zoom, 2))
	screen.setColor(0, 255, 255)
	screen.drawText(30, 0, "Zoom")

	--RETICULE
	screen.setColor(255, 255, 255)
	width = screen.getWidth()
	height = screen.getHeight()
	screen.drawCircle(width / 2, height / 2, 5)

	end


function round(n)
	return n % 1 >= 0.5 and math.ceil(n) or math.floor(n)
end

function round2(num, numDecimalPlaces)
  local mult = 10^(numDecimalPlaces or 0)
  return math.floor(num * mult + 0.5) / mult
end