fontmanager: Manager class for Fonts

Ensures that each font is only allocated once.

source/gamemodes/prophuntextended/gamemode/client/fontmanager.lua

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+--[[
+	The MIT License (MIT)
+	
+	Copyright (c) 2015-2018 Xaymar
+
+	Permission is hereby granted, free of charge, to any person obtaining a copy
+	of this software and associated documentation files (the "Software"), to deal
+	in the Software without restriction, including without limitation the rights
+	to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+	copies of the Software, and to permit persons to whom the Software is
+	furnished to do so, subject to the following conditions:
+
+	The above copyright notice and this permission notice shall be included in all
+	copies or substantial portions of the Software.
+
+	THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+	IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+	FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+	AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+	LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+	OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+	SOFTWARE.
+--]]
+
+local FontManagerMeta = {}
+FontManagerMeta.__index = FontManagerMeta
+
+-- Global Constructor
+function FontManager()
+	local obj = {}
+	obj.__index = obj
+	setmetatable(obj, FontManagerMeta)
+	obj:__construct()
+	return obj
+end
+
+-- Constructor
+function FontManagerMeta:__construct()
+	self.fonts = {}
+end
+
+function FontManagerMeta:Exists(name)
+	return (self.fonts[name] != nil)
+end
+
+function FontManagerMeta:Request(name, settings)
+	if (self.fonts[name] != nil) then
+		print("[Prop Hunt Font Manager] Request for font '"..name.."' received and cached.")
+		return name
+	end
+	print("[Prop Hunt Font Manager] Request for font '"..name.."' received and fulfilled.")
+	self.fonts[name] = surface.CreateFont(name, settings)
+	return name
+end
+