![]() ![]() Very high compatibility is reserved for ports which aim for rigorous bug-compatibility: these may include partial emulation of a DOS machine's address space, behavior of x86-specific mathematical or logical operations, and overflow emulation based on reverse engineering of the segment layouts of the original games' executable files in order to attain as close to 100% compatibility as is possible. ![]() While the scale used is somewhat subjective, a rough guideline is as follows: When gameplay changes are optional or otherwise configurable, it is the best compatibility profile (which is not necessarily the default configuration) that is considered. Factors which are not considered are simple support of higher resolutions, higher sound sample rates, or additional methods of input over the original games which do not change the actual gameplay experience or engine behavior. This method was used by Doom 1.9.Ĭompatibility is judged primarily by the extent to which a source port supports vanilla gameplay behavior including the original quirks and bugs of the respective games, behavior of maps even when those maps are erroneously constructed, and demo compatibility. P2P (short for Peer-to-Peer) means a connection protocol where all players communicate directly to each-other.C/S (short for Client/Server) means a connection protocol where all players communicate through and only to a central server.More efficient connection snapshots and individual clients cannot stall the server from connection issues. Asynchronous means a network protocol that relies on sending more complex data in exchange for allowing the client and server to advance independently.Tends to work better over direct connections and requires a lot of accuracy in connection data to support in game joining. Synchronous means the network (typically) sends minimal amounts of traffic in exchange for only advancing based on available player input.Ports supporting custom content offer a content definition language that allows easy creation of additional actors, items, weapons, or other effects.Ĭomparison by multiplayer functionality.Usually requires implementing interpolation logic so that the effect can actually be noticeable. Ports with uncapped framerate keep this update rate, but can draw new frames more often. ![]()
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