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资源说明：A content loading library for games using .NET/Mono.
# Contentious # Contentious is a content management library for games written in .NET and Mono. I originally wrote what's now becoming Contentious (this is the third rewrite) because the XNA Content Pipeline just isn't very good for PC games; it might be a solid tool for 360 and WP7 development, but personally I don't really care about either. Contentious is designed for Windows, Mac, and Linux, with the appropriate variants for MonoTouch and maybe MonoDroid when I get to that with the project for which I'm writing it. Contentious is released under the ISC license, packaged in this repo as LICENSE.md. One quick note: I've gotten a couple of questions as of late about why I'm so many pushing small libraries like this, Stateful, etc. for public release. It's mostly for my own purposes; loosely coupled code is in most cases better code and releasing modular libraries, even if they look (or are!) simple, out as open source is a decent way to make sure that independent and reusable systems stay independent and reusable. If it's of use to you, awesome - use it in good health. -Ed Ropple (ed+contentious@edropple.com); @edropple on Twitter ## How It Works ## Contentious is based around the **ContentContext**. At its core, ContentContext objects define a location (by default on disk, but at some point adapters for Android's weird file storage and a layer that can sit on top of XNA's ContentManager stuff) and a set of content types. Each content type contains a Type (what a given file resource will be turned into), and an Idempotent flag. Types that are flagged as Idempotent will create only a single instance of it for a given context and any child contexts; my go-to example is that a sprite font object would probably be immutable and not something you'd want to load multiple times--but you'd still want it to be lifetime-controlled by the top-level context. Once you've created a ContentContext, you load in a resource via the ContentContext.Load() method. Your path should be relative to the content subroot for that type; providing a file extension is optional but recommended; automatic extension appending is provided mostly for future XNA friendliness but I don't use it in my own projects. All content types that are loaded into a ContentContext must implement IDisposable, because when a ContentContext is disposed it will dispose of all objects created through it. (Possible future change: allow any object, but auto-dispose any IDisposables when done.) ContentContexts also have the notion of parent contexts. In your application, you'll generally only explicitly create one global context via a constructor and the rest via ContentContext.CreateChildContext(). Child contexts inherit all of the parent's configuration values (even if they are changed after the child is created). They also check with their parent contexts before attempting to load a piece of content from disk, which can reduce multiple loads of the same content. For example, you might load a font file into your global context, then request the same font file from a child context; it would be stupid to load the font file into the child context a second time. Of course, the child context won't try to Dispose() of resources it doesn't own, and disposing of a parent context disposes of all child contexts. ## Variants ## **FileContentContext** is probably the one most people want: it's a layer of abstraction over the file system and nothing else. It should be noted that it's not super-secure; while it disallows ".." in keys, it shouldn't be considered a very effective way of disallowing access outside of the content root. (Future idea: use my Filotic library to sandbox this. Not for now, though.) **XnaContentContext** is for use in XNA games; the same code could easily be used for MonoGame (though I don't know why you'd want to). The contentious-360 project (included in Contentious as a submodule) includes a version of this library for the Xbox 360; including it with this project did wacky things to my .sln file and for ease of deployment I've made it a single .csproj anyway.
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