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| 1 | local menu_options = { --This is our menu table. It contains basic data about the menu
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| 2 | - | [1] = {text="Menu Option 1", color=colors.blue},
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| 2 | + | [1] = {text="Menu Option 1", color=colors.green},
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| 3 | - | [2] = {text="Menu Option 2", color=colors.orange},
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| 3 | + | [2] = {text="Menu Option 2", color=colors.yellow},
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| 4 | - | [3] = {text="Menu Option 3", color=colors.cyan}
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| 4 | + | [3] = {text="Menu Option 3", color=colors.red},
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| 5 | [4] = {text="Menu Option 3", color=colors.black}
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| 6 | } | |
| 7 | local termX, termY = term.getSize() --The x/y size of the terminal | |
| 8 | local function menuDraw(selected) --Our main draw function | |
| 9 | local yPos = termY/2 - #menu_options/2 --The initial y position | |
| 10 | for index, data in pairs(menu_options) do | |
| 11 | menu_options[index].bounds = { --Create a new table in each option with the boundary data
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| 12 | x1 = termX/2 - (#data.text+4)/2; | |
| 13 | x2 = termX/2 + (#data.text+4)/2; | |
| 14 | y = yPos; | |
| 15 | } | |
| 16 | term.setTextColor(data.color) | |
| 17 | term.setCursorPos(data.bounds.x1, data.bounds.y) | |
| 18 | ||
| 19 | local text = | |
| 20 | index==selected and "[ "..data.text.." ]" or | |
| 21 | " "..data.text.." " --Essentially an if statement, but in a contracted form | |
| 22 | term.write(text) | |
| 23 | yPos = yPos+1 --Increment the initial y pos so we can move on the next line | |
| 24 | end | |
| 25 | end | |
| 26 | ||
| 27 | local function checkClick(x,y) --Check the mouse click to see if there's a menu option | |
| 28 | for index, data in pairs(menu_options) do | |
| 29 | if x>= data.bounds.x1 and x<= data.bounds.x2 and y==data.bounds.y then | |
| 30 | return index --Returns the index of the clicked option | |
| 31 | end | |
| 32 | end | |
| 33 | return false --If it went through the entire for loop without success, return false | |
| 34 | end | |
| 35 | ||
| 36 | term.setBackgroundColor(colors.white) | |
| 37 | term.clear() | |
| 38 | ||
| 39 | local selector = 1 --Our selector | |
| 40 | while true do --The main loop. I would generally put this inside of a function for a program. | |
| 41 | menuDraw(selector) --Draw the menu first | |
| 42 | local e = {os.pullEvent()} --Pull an event and put the returned values into a table
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| 43 | if e[1] == "key" then --If it's a key... | |
| 44 | if e[2] == keys.down then -- ... and it's the down arrow | |
| 45 | selector = selector < #menu_options and selector+1 or 1 --Increment the selector if the selector < #menu_options. Otherwise reset it to 1 | |
| 46 | elseif e[2] == keys.up then | |
| 47 | selector = selector > 1 and selector-1 or #menu_options --Decrement the selector if the selector > 1. Otherwise, reset it to #menu_options | |
| 48 | elseif e[2] == keys.enter then | |
| 49 | break --Break out of the loop | |
| 50 | end | |
| 51 | elseif e[1] == "mouse_click" then | |
| 52 | local value = checkClick(e[3], e[4]) --Check the mouse click | |
| 53 | if value then --If checkClick returns a value and not false | |
| 54 | selector = value --Set the selector to that value and break out of the loop | |
| 55 | break | |
| 56 | end | |
| 57 | end | |
| 58 | end | |
| 59 | ||
| 60 | term.clear() | |
| 61 | term.setCursorPos(1,1) | |
| 62 | term.write("Selected: "..selector) |
