EnderCalc v2.0

function reset()
term.clear()
term.setCursorPos(1,1)
end

function frame()
print("+-------------------------------------------------+")
	for i = 1,17 do
		print("|                                                 |")
	end
term.write("+-------------------------------------------------+")
end

lastAnswer = false --I will be adding this back in later, it got delete when I re-coded everything :)
while true do
reset()
term.setTextColor(colors.purple)
frame()
term.setCursorPos(4,1)
term.setTextColor(colors.orange)
io.write("[Back]")
term.setCursorPos(19,1)
term.setTextColor(colors.lime)
io.write("[EnderCalc]")
term.setCursorPos(3,3)
io.write("{Add} {Subtract} {Multiply} {Divide} {Square}")
term.setCursorPos(3,5)
io.write("{Square Root} {Pythagorean Theorem} {x^y}")
term.setCursorPos(3,7)
io.write("{Generate A Random Number Between Two Numbers}")
local event, button, xPos, yPos = os.pullEvent("mouse_click")
	if button == 1 then
		if (xPos >=3 and xPos <=7 and yPos ==3) then --ADD
			repeat
				reset()
				term.setTextColor(colors.orange)
				print("What is your first number?")
				term.setTextColor(colors.white)
				firstNum = read()
				valid = tonumber(firstNum)
				validNum = type(valid)
				if validNum ~= "number" then
					term.setTextColor(colors.red)
					io.write("This is not a number...")
					sleep(2.3)
				end
			until validNum == "number" and #firstNum <= 8
			repeat
				reset()
				term.setTextColor(colors.orange)
				print("What is your second number?")
				term.setTextColor(colors.white)
				secondNum = read()
				valid = tonumber(secondNum)
				validNum = type(valid)
				if validNum ~= "number" then
					term.setTextColor(colors.red)
					io.write("This is not a number...")
					sleep(2.3)
				end
			until validNum == "number" and #secondNum <= 8
			sum = (firstNum+secondNum)
			reset()
			term.setTextColor(colors.lightBlue)
			io.write("The sum of "..firstNum.." and "..secondNum.." is "..sum)
			term.setCursorPos(1,19)
			term.setTextColor(colors.orange)
			io.write("Press any key to continue")
			local event = os.pullEvent()
			if event == "key" then
				reset()
			end
		elseif (xPos >=9 and xPos <=18 and yPos ==3) then --SUBTRACT
			repeat
				reset()
				term.setTextColor(colors.orange)
				print("What is your first number?")
				term.setTextColor(colors.white)
				firstNum = read()
				valid = tonumber(firstNum)
				validNum = type(valid)
				if validNum ~= "number" then
					term.setTextColor(colors.red)
					io.write("This is not a number...")
					sleep(2.3)
				end
			until validNum == "number" and #firstNum <= 8
			repeat
				reset()
				term.setTextColor(colors.orange)
				print("What is your second number?")
				term.setTextColor(colors.white)
				secondNum = read()
				valid = tonumber(secondNum)
				validNum = type(valid)
				if validNum ~= "number" then
					term.setTextColor(colors.red)
					io.write("This is not a number...")
					sleep(2.3)
				end
			until validNum == "number" and #secondNum <= 8
			diff = (firstNum-secondNum)
			reset()
			term.setTextColor(colors.lightBlue)
			io.write("The difference between "..firstNum.." and "..secondNum.." is "..diff)
			term.setCursorPos(1,19)
			term.setTextColor(colors.orange)
			io.write("Press any key to continue")
			local event = os.pullEvent()
			if event == "key" then
				reset()
			end
		elseif (xPos >=20 and xPos <=29 and yPos ==3) then --MULTIPLY
			repeat
				reset()
				term.setTextColor(colors.orange)
				print("What is your first number?")
				term.setTextColor(colors.white)
				firstNum = read()
				valid = tonumber(firstNum)
				validNum = type(valid)
				if validNum ~= "number" then
					term.setTextColor(colors.red)
					io.write("This is not a number...")
					sleep(2.3)
				end
			until validNum == "number" and #firstNum <= 8
			repeat
				reset()
				term.setTextColor(colors.orange)
				print("What is your second number?")
				term.setTextColor(colors.white)
				secondNum = read()
				valid = tonumber(secondNum)
				validNum = type(valid)
				if validNum ~= "number" then
					term.setTextColor(colors.red)
					io.write("This is not a number...")
					sleep(2.3)
				end
			until validNum == "number" and #secondNum <= 8
			diff = (firstNum*secondNum)
			reset()
			term.setTextColor(colors.lightBlue)
			io.write("The product of "..firstNum.." and "..secondNum.." is "..diff)
			term.setCursorPos(1,19)
			term.setTextColor(colors.orange)
			io.write("Press any key to continue")
			local event = os.pullEvent()
			if event == "key" then
				reset()
			end
		elseif (xPos >=31 and xPos <=38 and yPos ==3) then --DIVIDE
			repeat
				reset()
				term.setTextColor(colors.orange)
				print("What is your first number?")
				term.setTextColor(colors.white)
				firstNum = read()
				valid = tonumber(firstNum)
				validNum = type(valid)
				if validNum ~= "number" then
					term.setTextColor(colors.red)
					io.write("This is not a number...")
					sleep(2.3)
				end
			until validNum == "number" and #firstNum <= 8
			repeat
				reset()
				term.setTextColor(colors.orange)
				print("What is your second number?")
				term.setTextColor(colors.white)
				secondNum = read()
				valid = tonumber(secondNum)
				validNum = type(valid)
				if validNum ~= "number" then
					term.setTextColor(colors.red)
					io.write("This is not a number...")
					sleep(2.3)
				end
			until validNum == "number" and #secondNum <= 8
			diff = (firstNum/secondNum)
			reset()
			term.setTextColor(colors.lightBlue)
			io.write("The quotient of "..firstNum.." and "..secondNum.." is "..diff)
			term.setCursorPos(1,19)
			term.setTextColor(colors.orange)
			io.write("Press any key to continue")
			local event = os.pullEvent()
			if event == "key" then
				reset()
			end
		elseif (xPos >=40 and xPos <=47 and yPos ==3) then --SQUARE
			repeat
				reset()
				term.setTextColor(colors.orange)
				print("What number would you like to square?")
				term.setTextColor(colors.white)
				sq = read()
				valid = tonumber(sq)
				validNum = type(valid)
				if validNum ~= "number" then
					term.setTextColor(colors.red)
					io.write("This is not a number...")
					sleep(2.3)
				end
			until validNum == "number" and #sq <= 8
			square = (sq^2)
			reset()
			term.setTextColor(colors.lightBlue)
			io.write("The square of "..sq.." is "..square)
			term.setCursorPos(1,19)
			term.setTextColor(colors.orange)
			io.write("Press any key to continue")
			local event = os.pullEvent()
			if event == "key" then
				reset()
			end
		elseif (xPos >=3 and xPos <=15 and yPos ==5) then --SQUARE ROOT
			repeat
				reset()
				term.setTextColor(colors.orange)
				print("What number do you need the square root of?")
				term.setTextColor(colors.white)
				sqRt = read()
				valid = tonumber(sqRt)
				validNum = type(valid)
				if validNum ~= "number" then
					term.setTextColor(colors.red)
					io.write("This is not a number...")
					sleep(2.3)
				end
			until validNum == "number" and #sqRt <= 8
			squareRoot = math.sqrt(sqRt)
			reset()
			term.setTextColor(colors.lightBlue)
			io.write("The square of "..sqRt.." is "..squareRoot)
			term.setCursorPos(1,19)
			term.setTextColor(colors.orange)
			io.write("Press any key to continue")
			local event = os.pullEvent()
			if event == "key" then
				reset()
			end
		elseif (xPos >=17 and xPos <=37 and yPos ==5) then --PYTHAGOREAN THEOREM
			reset()
			term.setTextColor(colors.orange)
			print("What value are you missing?")
			term.setCursorPos(1,3)
			term.setTextColor(colors.lime)
			io.write("{a} {b} {c}")
			event, button, xPos, yPos = os.pullEvent("mouse_click")
			if button == 1 then
				if (xPos >=1 and xPos <=3 and yPos == 3) then
					repeat
						reset()
						term.setTextColor(colors.orange)
						print("What is the value of b?")
						term.setTextColor(colors.white)
						b = read()
						valid = tonumber(b)
						validNum = type(valid)
						if validNum ~= "number" then
							term.setTextColor(colors.red)
							io.write("This is not a number...")
							sleep(2.3)
						end
					until validNum == "number" and #b <=8
					repeat
						reset()
						term.setTextColor(colors.orange)
						print("What is the value of c?")
						term.setTextColor(colors.white)
						c = read()
						valid = tonumber(valid)
						if validNum ~= "number" then
							term.setTextColor(colors.red)
							io.write("This is not a number...")
							sleep(2.3)
						end
						sleep(0.1)
						if b >= c then
							term.setTextColor(colors.red)
							io.write("The leg(s) of a triangle cannot be greater or equal to the hypotenuse!")
							sleep(2.3)
						end
					until validNum == "number" and #c <=8 and b<c
					bSq = (b^2)
					cSq = (c^2)
					aSq = (cSq-bSq)
					a = math.sqrt(aSq)
					reset()
					term.setTextColor(colors.lightBlue)
					io.write("a = "..a.." b = "..b.." c = "..c)
					term.setCursorPos(1,19)
					term.setTextColor(colors.orange)
					io.write("Press any key to continue")
					local event = os.pullEvent()
					if event == "key" then
						reset()
					end
				elseif (xPos >=5 and xPos <=7 and yPos == 3) then
					repeat
						reset()
						term.setTextColor(colors.orange)
						print("What is the value of a?")
						term.setTextColor(colors.white)
						a = read()
						valid = tonumber(a)
						validNum = type(valid)
						if validNum ~= "number" then
							term.setTextColor(colors.red)
							io.write("This is not a number...")
							sleep(2.3)
						end
					until validNum == "number" and #a <=8
					repeat
						reset()
						term.setTextColor(colors.orange)
						print("What is the value of c?")
						term.setTextColor(colors.white)
						c = read()
						valid = tonumber(valid)
						if validNum ~= "number" then
							term.setTextColor(colors.red)
							io.write("This is not a number...")
							sleep(2.3)
						end
						sleep(0.1)
						if a >= c then
							term.setTextColor(colors.red)
							io.write("The leg(s) of a triangle cannot be greater or equal to the hypotenuse!")
							sleep(2.3)
						end
					until validNum == "number" and #c <=8 and a<c
					aSq = (a^2)
					cSq = (c^2)
					bSq = (cSq-aSq)
					b = math.sqrt(bSq)
					reset()
					term.setTextColor(colors.lightBlue)
					io.write("a = "..a.." b = "..b.." c = "..c)
					term.setCursorPos(1,19)
					term.setTextColor(colors.orange)
					io.write("Press any key to continue")
					local event = os.pullEvent()
					if event == "key" then
						reset()
					end
				elseif (xPos >=9 and xPos <=11 and yPos == 3) then
					repeat
						reset()
						term.setTextColor(colors.orange)
						print("What is the value of a?")
						term.setTextColor(colors.white)
						a = read()
						valid = tonumber(a)
						validNum = type(valid)
						if validNum ~= "number" then
							term.setTextColor(colors.red)
							io.write("This is not a number...")
							sleep(2.3)
						end
					until validNum == "number" and #a <=8
					repeat
						reset()
						term.setTextColor(colors.orange)
						print("What is the value of b?")
						term.setTextColor(colors.white)
						b = read()
						valid = tonumber(valid)
						if validNum ~= "number" then
							term.setTextColor(colors.red)
							io.write("This is not a number...")
							sleep(2.3)
						end
						sleep(0.1)
					until validNum == "number" and #b <=8
					aSq = (a^2)
					bSq = (b^2)
					cSq = (aSq+bSq)
					c = math.sqrt(cSq)
					reset()
					term.setTextColor(colors.lightBlue)
					io.write("a = "..a.." b = "..b.." c = "..c)
					term.setCursorPos(1,19)
					term.setTextColor(colors.orange)
					io.write("Press any key to continue")
					local event = os.pullEvent()
					if event == "key" then
						reset()
					end

				end
			end
		elseif (xPos >=39 and xPos <=43 and yPos == 5) then
			repeat
				reset()
				term.setTextColor(colors.orange)
				print("What is the value of x?")
				term.setTextColor(colors.white)
				x = read()
				valid = tonumber(x)
				validNum = type(valid)
				if validNum ~= "number" then
					term.setTextColor(colors.red)
					io.write("This is not a number...")
					sleep(2.3)
				end
			until validNum == "number" and #x <=8
			repeat
				reset()
				term.setTextColor(colors.orange)
				print("What is the value of y?")
				term.setTextColor(colors.white)
				y = read()
				valid = tonumber(y)
				validNum = type(valid)
				if validNum ~= "number" then
					term.setTextColor(colors.red)
					io.write("This is not a number...")
					sleep(2.3)
				end
			until validNum == "number" and #y <=8
			xy = (x^y)
			reset()
			term.setTextColor(colors.lightBlue)
			io.write(x.."^"..y.." equals "..xy)
			term.setCursorPos(1,19)
			term.setTextColor(colors.orange)
			io.write("Press any key to continue")
			local event = os.pullEvent()
			if event == "key" then
				reset()
			end
		elseif (xPos >=3 and xPos <=48 and yPos == 7) then
			repeat
				reset()
				term.setTextColor(colors.orange)
				print("What is your first param/number?")
				term.setTextColor(colors.white)
				firstParam = read()
				valid = tonumber(firstParam)
				validNum = type(valid)
				if validNum ~= "number" then
					term.setTextColor(colors.red)
					io.write("This is not a number...")
					sleep(2.3)
				end
			until validNum == "number" and #firstParam <=8
			repeat
				reset()
				term.setTextColor(colors.orange)
				print("What is your second param/number?")
				term.setTextColor(colors.white)
				secondParam = read()
				valid = tonumber(secondParam)
				validNum = type(valid)
				if validNum ~= "number" then
					term.setTextColor(colors.red)
					io.write("This is not a number...")
					sleep(2.3)
				end
				sleep(0.1)
				if secondParam == firstParam then
					term.setTextColor(colors.red)
					io.write("The Endermen substitute your answer with a response too harsh to repeat!")
					sleep(3.5)
				end
			until validNum == "number" and #secondParam <=8 and secondParam ~= firstParam
			rdm = math.random(firstParam,secondParam)
			reset()
			term.setTextColor(colors.lightBlue)
			io.write("A random number between "..firstParam.." and "..secondParam.." is "..rdm)
			term.setCursorPos(1,19)
			term.setTextColor(colors.orange)
			io.write("Press any key to continue")
			local event = os.pullEvent()
			if event == "key" then
				reset()
			end
		end
	end
end