Stormworks Rows

rows.lua

-- Constant values
local CONST_CHAR_HEIGHT   = 5
local CONST_CHAR_WIDTH    = 4
local CONST_LINE_SPACING  = 1

function onTick()
    -- Example that adds two composite channels together and outputs the result
    in1 = input.getNumber(1)
    in2 = input.getNumber(2)
    output.setNumber(1, in1 + in2)
end    
        
function onDraw()
    -- Example that draws a red circle in the center of the screen with a radius of 20 pixels
    width = screen.getWidth()
    height = screen.getHeight()
    
    screen.setColor(255, 255, 255)
    
    -- Our list of strings to display vertically.
    local strings_to_display = {
        "One line",
        "ah!! two lines!",
        "AHHH!!!! THREE!!!! LINEEESSS!!"
    }
    
    -- Extended drawTextBox:
    --  Automatically configures height based off intended width of box.
    --  Expects a table of strings to display.
    function drawTextBoxEx(origin_x, origin_y, width, text_list)
        local y_val = origin_y
        
        for index in ipairs(text_list) do
            
            screen.drawTextBox(origin_x, y_val, width, 6, text_list[index])
            
            local text_string   = text_list[index]
            local string_length = string.len(text_string)           -- Retrieve the length of our string.
            local char_predic   = string_length * CONST_CHAR_WIDTH  -- Compute the width our text would take up on a single line.
            local line_count    = math.ceil(char_predic / width)    -- Compute the number of lines required to fit this line of text in a container of the specified width.
            
            y_val = y_val + line_count * (CONST_CHAR_HEIGHT + CONST_LINE_SPACING)
            
        end
    end
    
    drawTextBoxEx(0, 0, 150, strings_to_display)
    
end