Calc

--Calculator
x4 = 25
x4 = x4 + 0
slc2 = 0
op = 0
Eingabe = {}

function titlebarTaschenrechner()
 term.setCursorPos(1,1)
 term.setBackgroundColor(16385)
 term.setTextColor(1)
 term.clearLine()
 term.setCursorPos(2,1)
 print("[Close]")
end

function TaschenrechnerButtonsEinzeln(i,x2,y2)
 num = i
 term.setBackgroundColor(256)
 term.setTextColor(32768)
 term.setCursorPos(x2, y2)
 print("   ")
 term.setCursorPos(x2, y2+1)
 write(" ")
 term.setBackgroundColor(1)
 write(num)
 term.setBackgroundColor(256)
 write(" ")
 term.setCursorPos(x2, y2+2)
 print("   ")
end

function TaschenrechnerOperatoren(i2,x3,y3)
 op = i2
 term.setCursorPos(x3,y3)
 term.setBackgroundColor(256)
 term.setTextColor(32768)
 print("          ")
 term.setCursorPos(x3,y3+1)
 write(" ")
 term.setCursorPos(x3+1,y3+1)
 term.setBackgroundColor(1)
 write(op)
 term.setCursorPos(x3+9,y3+1)
 term.setBackgroundColor(256)
 write(" ")
 term.setCursorPos(x3, y3+2)
 print("          ")


end

function TaschenrechnerButtonsGesamt()          --()
 TaschenrechnerButtonsEinzeln(1,2,3)
 TaschenrechnerButtonsEinzeln(2,6,3)
 TaschenrechnerButtonsEinzeln(3,10,3)
 TaschenrechnerButtonsEinzeln(4,2,7)
 TaschenrechnerButtonsEinzeln(5,6,7)
 TaschenrechnerButtonsEinzeln(6,10,7)
 TaschenrechnerButtonsEinzeln(7,2,11)
 TaschenrechnerButtonsEinzeln(8,6,11)
 TaschenrechnerButtonsEinzeln(9,10,11)
 TaschenrechnerButtonsEinzeln(0,2,15)
 TaschenrechnerButtonsEinzeln("C",6,15)
 TaschenrechnerButtonsEinzeln(">",10,15)
 term.setBackgroundColor(256)
 term.setTextColor(32768)
 term.setCursorPos(24, 3)
 print("                      ")
 term.setCursorPos(24,4)
 write(" ")
 term.setBackgroundColor(1)
 write("                    ")
 term.setBackgroundColor(256)
 write(" ")
 term.setCursorPos(24,5)
 print("                      ")
 TaschenrechnerOperatoren("add     ", 24, 9)
 TaschenrechnerOperatoren("subtract", 36,9)
 TaschenrechnerOperatoren("multiply", 24, 14)
 TaschenrechnerOperatoren("divide  ", 36, 14)
end

function TaschenrechnerErg(i)
  i = x4
 if x4 <= 43 then
  x4 = x4 +1
 elseif x4 >= 43 then
  x4 = x4
 end
end


function TaschenrechnerVorspann()
 term.setBackgroundColor(8)
 term.setTextColor(16384)
 shell.run("clear")
 term.setCursorPos(16 , 10)
 print("    Calculator     ")
 term.setCursorPos(16,11)
 print("--written by Vali--")
end

function TaschenrechnerZahlen(i,x)
 table.insert(Eingabe, i)
 term.setBackgroundColor(1)
 term.setTextColor(32768)
 term.setCursorPos(x,4)
 TaschenrechnerErg(x)
 write(Eingabe)
 end

function TaschenrechnerOPclear()
term.setBackgroundColor(1)
term.setTextColor(32768)
term.setCursorPos( 25, 4)
write("                        ")
term.setCursorPos(25, 4)
end

TaschenrechnerVorspann()
sleep(2)
shell.run("clear")
TaschenrechnerButtonsGesamt()
titlebarTaschenrechner()


while true do
local event, button, x, y = os.pullEvent()
 if event == "mouse_click" then
  if x >= 2 and x <= 8 and y == 1 and button == 1 then
     shell.run("GUI")
   elseif x >= 2 and x <= 4 and y >= 3 and y <= 5 and button == 1 then
     TaschenrechnerZahlen(1, x4)
   elseif x >= 6 and x <= 8 and y >= 3 and y <= 5 and button == 1 then
     TaschenrechnerZahlen(2, x4)
   elseif x >= 10 and x <= 12 and y >= 3 and y <= 5 and button == 1 then
     TaschenrechnerZahlen(3, x4)
   elseif x >= 2 and x <= 4 and y >=7 and y <= 9 and button == 1 then
     TaschenrechnerZahlen(4, x4)
   elseif x >= 6 and x <= 8 and y >= 7 and y <= 9 and button == 1 then
     TaschenrechnerZahlen(5, x4)
   elseif x >10 and x <= 12 and y >= 7 and y <= 9 and button == 1 then
     TaschenrechnerZahlen(6, x4)
   elseif x >= 2 and x <= 4 and y >= 11 and y <= 13 and button == 1 then
     TaschenrechnerZahlen(7, x4)
   elseif x >= 6 and x <= 8 and y >= 11 and y <= 13 and button == 1 then
     TaschenrechnerZahlen(8, x4)
   elseif x >= 10 and x <= 12 and y >= 11 and y <= 13 and button == 1 then
     TaschenrechnerZahlen(9, x4)
   elseif x >= 2 and x <= 4 and y >= 15 and y <= 17 and button == 1 then
     TaschenrechnerZahlen(0, x4)
   elseif x >= 24 and x <= 34 and y >= 9 and y <= 11 and button == 1 and slc2 == 0 then
     TaschenrechnerZahlen("+", x4)
     slc2 = 1
     op = 1
   elseif x >= 36 and x <= 46 and y >= 9 and y <= 11 and button == 1 and slc2 == 0 then
     TaschenrechnerZahlen("-", x4)
     slc2 = 1
     op = 2
   elseif x >= 24 and y <= 34 and y >= 14 and y <= 16 and button == 1 and slc2 == 0 then
     TaschenrechnerZahlen("*", x4)
     slc2 = 1
     op = 3
   elseif x >= 36 and x <= 46 and y >= 14 and y <= 16 and button == 1 and slc2 == 0 then
     TaschenrechnerZahlen("/", x4)
     slc2 = 1
     op = 4

   elseif x >= 6 and x <= 8 and y >= 15 and y <= 17 and buttons == 1 then
    TaschenrechnerOPclear()
      end
     end
    end