Added assets manager singleton.

src/ui/font.lua

@@ -0,0 +1,53 @@
+------------------------------------------------------------------------------
+-- Imports
+------------------------------------------------------------------------------
+
+local love       = require 'love'
+local make_class = require 'src.utils.classes'
+local Asset      = require 'src.utils.asset'
+
+------------------------------------------------------------------------------
+-- Class definitions
+------------------------------------------------------------------------------
+
+-- Font is a simple wrapper around Löve's own Font class to allow for
+-- easy loading/unloading and automatically checking if it's is valid
+-- before using it.
+local Font = make_class(Asset)
+
+
+------------------------------------------------------------------------------
+-- Class methods
+------------------------------------------------------------------------------
+
+function Font:_init(file_name, size)
+    self.file_name = string.format('assets/%s', file_name)
+    self.size = (size ~= nil and size) or 20
+end
+
+
+function Font:load()
+    self.f = love.graphics.newFont(self.file_name, self.size)
+end
+
+
+function Font:unload()
+    self.f = nil
+end
+
+
+function Font:set()
+    if self.f ~= nil then love.graphics.setFont(self.f) end
+end
+
+
+function Font:unset()
+    love.graphics.setFont()
+end
+
+
+------------------------------------------------------------------------------
+-- Module return
+------------------------------------------------------------------------------
+
+return Font