At any point on your surface, if there's only combinations of 2 directions of movement available, than it's 2 dimensional. Even though you could move across the tiles, and each one would give a different color value for being the one your standing on, that doesn't make it a 3 dimensional surface. Imagine if your game floor was some type of color wheel.

The reason that makes it 2d is the same reason a sphere is 2d. That video is correct, and a good explanation comes shortly after the time you linked.īecause you can't stack rooms on top of each other. If Doom was 'cheating', every other game is just cheating with more advanced algorithms, the distinction is entirely arbitrary. But all these limitations could have been worked over with more time and effort, and it doesn't change the fact that there was 3d information under the hood. All surfaces have to be vertically or horzontally alligned, bullets disregard height information, only one floor level with a given (x,y) component can exist (so essentially there's a map from (x,y) floor points to their z component, which is super clever). What they did to prompt this confusion is make a limited 3d engine, were they made some simplifying assumptions to make their algorithms easier and possibly faster. Stairs have different height, walls have different height, the kakodemon can fly up an down, Doom is clearly working around with 3d information. 'Just numbers' is a borderline lie, those are coordinates. That right there is 3d information, 2d points with a third dimension denoting height. That's a red herring, everything in a computer is inherently representational, you might as well say there are no actual websites stored on servers, they're just created from hypertext in your browser to give the illusion of websites existing. Okay, this is a really handwavy argument, since it's trying to argue about what's 'really' going on in the computer, versus what 'appears' to happen. Feedback Friday Screenshot Saturday Soundtrack Sunday Marketing Monday WIP Wednesday Daily Discussion Quarterly Showcase Related communities 1

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