Originally Posted by dragonguy
No, Duke Nukem 3D uses a version of the Build Engine, like Doom do.
The reason why I thought Duke Nukem used the Quake Engine is because it has slopes and ramps which are impossible in the doom engine, the best you can do in doom is stairs and drops, I'm curious to how the Build Engine works, if it's terrain and buildings aren't made from models(like quake) then what is it made from then?
I discovered a new 3D Engine, the Rise of the Triad Engine, which is a more advanced version of the Wolf 3D Engine(It has a Y axis unlike Wolf 3D), so that puts us up to five 3D Engines then.
the build engine's maps are basically just a 2D 'grid' which you can displace in areas... kind of like a heightmap in a way; both the floor and ceiling in a sector use the same vertex layout, but obviously the ceiling's copies are higher. for example, if you have a square sector with a smaller triangular sector within it, the ceiling and floor will have a triangular "piece" which can be raised/lowered/tilted/textured/assigned a different behavior/etc independent of the floor's triangular piece (though some properties are shared between the two pieces)
of course, being similar to a heightmap, it can't have overhangs like bridges unless you construct them out of sprites, and walls are much more limited in how you can design them (basically, if you want a hole in a wall, you actually have to modify the floor and ceiling within that wall's subsector)
it's kinda hard to explain
I understand from what you said, I can see how it would be better than the doom engine, as the bottom and the the top of the sector would have height maps allowing you to create variation in floors and I notice it also must have a layers system as some buildings have multiple floors, Doom only had one layer, so you coudn't have rooms on top of each other.
I managed to get Duke Nukem 2 Full Version for free but I haven't found Duke Nukem 3D Atomic Edition(That has the fourth episode) yet.
the "layers" is more of a hack, since if two or more sectors overlap, you can only view one at a time without the engine freaking out
er? Doom used Build engine? Where did you get that information?
http://en.wikipedia.org/wiki/Doom_engine
Doom technically uses the least advanced version of the build engine, which doesn't support hexen scripts, looking up and down, height maps, layers, linedef moving, inventory, etc.
So in the heirarchy it goe's
Note:If two games are on the same line they have the same version of the 3D Engine.
3D Engine:
Wolfenstein 3D & Spear of Destiny
Rise of the Triad
Build Engine:
Ultimate Doom & Doom 2
Final Doom & Heretic: Shadow of the Serpent Riders
Hexen: Beyond Heretic
Duke Nukem 3D
Irrlicht Engine:
Quake & Hexen 2
Quake 2 & Heretic 2
Quake 3
Doom 3: Ressurection of Evil
Quake 4
Do you think it would be possible to make a 3rd person 3D engine?
I really like the engine though!
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