progress_bar as own lib

src/main.lua

@@ -1,46 +1,10 @@
 local utility = require "lib.utility"
-
-local progress_bar_metatable = {
-  __index = {
-    font = love.graphics.newFont(18), -- TODO customizable
-    set_progress = function(self, progress_percentage)
-      self.progress_percentage = progress_percentage
-    end,
-    set_text = function(self, new_text)
-      self.text = new_text
-    end,
-    draw = function(self)
-      local cyan = {0, 0.5, 0.5, 1} -- TODO make customizable; consider percentage range colors
-      love.graphics.setColor(cyan)
-      love.graphics.rectangle("fill", self.x_position, self.y_position, self.total_width * self.progress_percentage, self.total_height)
-
-      local text_color = {1, 1, 1, 1} -- TODO customizable; default auto contrast with background color
-      love.graphics.setColor(text_color)
-
-      if self.text then
-        local font_height = self.font:getHeight()
-        local buffer_width = 8 -- TODO this should not be hardcoded
-        love.graphics.setFont(self.font)
-        love.graphics.print(self.text, self.x_position + buffer_width, self.y_position + self.total_height / 2 - font_height / 2)
-      end
-    end,
-  }
-}
-
-local new_progress_bar = function(x_position, y_position, total_width, total_height, progress_percentage)
-  return setmetatable({
-    x_position = x_position,
-    y_position = y_position,
-    total_width = total_width,
-    total_height = total_height,
-    progress_percentage = progress_percentage or 0,
-  }, progress_bar_metatable)
-end
+local progress_bar = require "lib.progress_bar"
 
 -- test progress_bar
 local window_width, window_height = love.graphics.getDimensions()
 local progress_bar_height = 30 -- TODO should not be hardcoded
-local test = new_progress_bar(0, window_height - progress_bar_height, window_width, progress_bar_height)
+local test = progress_bar(0, window_height - progress_bar_height, window_width, progress_bar_height)
 test:set_text("This is a test text string of significant length. It exists to test printing over a progress bar.")
 test:set_progress(math.random())