Carmack and Romero are very open to technical questions from fans btw, you just gotta email em and they respond when dey got the time. Some popular gaming channel made a factual mistake that there was an early implementation of sloped surfaces, that later got removed in idTech 2 (8 according to Romero). since i couldn't find any prooofs I was advised ask Romero himself. got a response.
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John Romero <[email protected]>
May 30
to me, us
Hi [REDACTED],
First of all, I disagree with the idTech numbering system because it’s not correct. It assumes that all the engines we wrote were 3D and they weren’t. Here’s my numbering:
1990 2D idTech 1: Commander Keen 1-3
1991 2D idTech 2: Dangerous Dave 2 (new animation system)
1991 2D idTech 3: Commander Keen 4-6 (completely different)
1991 2.5D idTech 4: Hovertank One
1991 2.5D idTech 5: Catacomb 3D
1992 2.5D idTech 6: Wolfenstein 3D
1992 2.5D idTech 7: Shadowcaster
1993 2.5D idTech 8: DOOM
1995 2.5D idTech 9.5: Hexen
1996 3D idTech 10: Quake
…etc.
The Shadowcaster engine was an advanced Wolf3D engine with fog and sloping floors. This is probably what you read about.
Hexen was an advanced DOOM engine with rotating BSP pieces so doors could rotate open and closed, as well as a lot of other stuff.
At no time during DOOM’s development did we have sloping floors. The data structure never supported it.
Regards,
John
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John Romero
[email protected]
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