UE3 - General largest additive map size
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I've never heard of a limit on map size.
Even if the engine doesn't explicitly limit you, there are other practical limitations. If a map is large enough, loading times will get prohibitive. I suppose you could eventually overflow the datatype that Epic uses for game coordinates.
Even if the engine doesn't explicitly limit you, there are other practical limitations. If a map is large enough, loading times will get prohibitive. I suppose you could eventually overflow the datatype that Epic uses for game coordinates.
There is no real hard limit, but the further you go from the origin point in the world, the less accurate things get, the more prone to error.
DannyMeister: Thanks for the reply. I'm not concerned with the practical limitations as it's not a standard fps level or anything.
Sjosz: What do you mean when you say less accurate and more prone to error? Placement errors and crashes? And at approximately what distance from world center does this begin to occur?
Sjosz: What do you mean when you say less accurate and more prone to error? Placement errors and crashes? And at approximately what distance from world center does this begin to occur?
AI accuracy, streaming, that sort of thing really. no pre-set distance for that, just the further away from the origin you go. Should be relatively safe in the grid area that you can see. The smart thing is to stream levels small enough anyway, nothing to do with practical FPS type stuff.
Vector values have a replication limit for their components in the range +-2^20 or so. That's also about the practical limits of the floating point accuracy, since it leaves only about 3 or 4 bits for the fractional part. Smaller velocities may no longer have any effect on the actor location, depending on the framerate/tickrate.
To be on the save side, don't make your level much larger than maybe 100,000 units in any direction from the origin.
To be on the save side, don't make your level much larger than maybe 100,000 units in any direction from the origin.