Side note - this is the sum of what I have so far for my project..
Programming board - 'unit' onStart =
screen.clearScriptOutput()
Screen is linked as the last slot following the refiners, for the screen, it has an 'onOutputChanged' filter of
-- Define actions to be done when receiving a keyword
local actions = {
['calcium'] = function()
ref.stop()
ref.setCurrentSchematic("1358793857")
ref.start()
end,
['copper'] = function()
ref.stop()
ref.setCurrentSchematic("1447143715")
ref.start()
end,
['concrete'] = function()
ref.stop()
ref.setCurrentSchematic("394971409")
ref.start()
end
}
-- Check if an action is defined
if actions[output] then
-- Clear screen output
screen.clearScriptOutput()
-- Execute the action
actions[output]()
end
and the screen itself has the following code
--# Buttonclass definition called only at the first frame
if not Button then
-- getEllipsis( font, text, maxWidth)
-- Return a shorten text string by with with ... at the end
function getEllipsis(font, text, maxWidth)
local width = getTextBounds(font, '...')
for i = 1, #text do
local line = getTextBounds(font, text:sub(1,i)) + width
if line > maxWidth then
return text:sub(1,i-1)..'...'
end
end
return text
end
Button = {}
Button.__index = Button
-- Button object constructor
-- .x : X component of the position
-- .y : Y component of the position
-- .width : Width of the button
-- .height : Height of the button
-- .caption : Associated text caption
-- .onClick : Function called when the button is clicked
function Button:new(x, y, width, height, caption)
local self = {
x = x or 0,
y = y or 0,
w = width or 100,
h = height or 20,
caption = caption or "",
onClick = nil
}
-- Draws the button on the screen using the given layer
function self:draw(layer, font)
-- Localize object data
local x, y, w, h = self.x, self.y, self.w, self.h
local min, max = self.min, self.max
-- Get cursor data
local mx, my = getCursor()
local down = getCursorDown()
local released = getCursorReleased()
local clicked = false
-- Determine if the cursor is on the button and switch the state
if (mx >= x and mx <= x+w) and (my >= y and my <= y+h) then
if down then
clicked = true
-- Call the onClick function when the mouse button is released
elseif released then
if self.onClick then
-- Provide cursor position in arguments
self:onClick( mx, my)
end
end
end
--# Draw the button
-- Define box default strokes style
setDefaultStrokeColor(layer, Shape_BoxRounded, 1, 1, 1, 1)
setDefaultStrokeWidth(layer, Shape_BoxRounded, 0.1)
-- If the button is clicked change the background
if clicked then
setNextFillColor(layer, 0.1, 0.1, 0.1, 1)
else
setNextFillColor(layer, 0.3, 0.3, 0.3, 1)
end
addBoxRounded(layer, x, y, w, h, 1)
-- Draw caption and value display
local caption = getEllipsis(font, self.caption, w-12)
local font = font or nil
setNextTextAlign( layer, AlignH_Center, AlignV_Middle)
addText( layer, font, caption, x+0.5*w, y+0.5*h)
end
return setmetatable(self, Button)
end
end
-- Get screen resolution
local rx, ry = getResolution()
local medium = loadFont('Play', 20)
--# Initialization called only at the first frame
if not _init then
-- Draw the 3 buttons
buttonRed = Button:new(0.5*rx - 100, 0.35*ry - 16, 220, 42, "Refine - Calcium")
buttonGreen = Button:new(0.5*rx - 100, 0.5*ry - 16, 220, 42, "Refine - Copper")
buttonBlue = Button:new(0.5*rx - 100, 0.65*ry - 16, 220, 42, "Refine - Concrete")
buttonRed.onClick = function(self) setOutput('calcium') end
buttonGreen.onClick = function(self) setOutput('copper') end
buttonBlue.onClick = function(self) setOutput('concrete') end
_init = true
end
--# Rendering
local layer = createLayer()
-- Draw buttons
buttonRed:draw( layer, medium)
buttonGreen:draw( layer, medium)
buttonBlue:draw( layer, medium)
-- Request a run at each frame
requestAnimationFrame(1)
