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@ -6,7 +6,9 @@ Doom is a legendary video [game](game.md) released in 1993, perhaps the most fam
Partially thanks to the free release of the engine and its relatively [suckless](suckless.md) design ([C](c.md) language, [software rendering](sw_rendering.md), ...), Doom has been [ported](port.md), both officially and unofficially, to a great number of platforms (e.g. [Gameboy Advance](gba.md), [PS1](playstation.md), even [SNES](snes.md)) and has become a kind of **de facto standard [benchmark](benchmark.md)** for computer platforms -- you will often hear the phrase: **"but does it run Doom?"** Porting a Doom to any platform has become kind of a [meme](meme.md), someone allegedly even ported it to a pregnancy test (though it didn't actually run on the test, it was really just a display). { Still [Anarch](anarch.md) may be even more portable than Doom :) ~drummyfish }
The Doom engine was revolutionary and advanced (not only but especially) video game graphics by a great leap, considering its predecessor [Wolf3D](wolf3D.md) was really primitive in comparison (Doom basically set the direction for future trends in games such as driving the development of more and more powerful [GPUs](gpu.md) in a race for more and more impressive visuals). Doom used a technique called **[BSP rendering](bsp.md)** that was able to render [realtime](realtime.md) 3D views of textured environments with distance fog and enemies and items represented by 2D [billboards](billboard.md) ("sprites"). No [GPU](gpu.md) acceleration was used, graphics was rendered purely with [CPU](cpu.md) (so called [software rendering](sw_rendering.md), GPU rendering would come with Doom's successor [Quake](quake.md)). This had its limitations, for example the camera could not tilt up and down and the levels could not have rooms above other rooms. For this reason some call Doom "[pseudo 3D](pseudo3d.md)" or 2.5D rather than "true 3D". Nevertheless, though with limitations, Doom did present 3D views and internally it did work with 3D coordinates (for example the player or projectiles have 2D position plus height coordinate), despite some dumb YouTube videos saying otherwise. For this reason we prefer to call Doom a **primitive 3D** engine, but 3D nonetheless. However Doom was not just a game with good graphics, it had extremely good gameplay, legendary music and art style and introduced the revolutionary [deathmatch](deathmatch.md) multiplayer, as well as a HUGE modding and mapping community. It was a success in every way -- arguably no other game has since achieved a greater revolution than Doom.
The **Doom engine** was revolutionary and advanced (not only but especially) video game graphics by a great leap, considering its predecessor [Wolf3D](wolf3D.md) was really primitive in comparison (Doom basically set the direction for future trends in games such as driving the development of more and more powerful [GPUs](gpu.md) in a race for more and more impressive visuals). Doom used a technique called **[BSP rendering](bsp.md)** that was able to render [realtime](realtime.md) 3D views of textured environments with distance fog and enemies and items represented by 2D [billboards](billboard.md) ("sprites"). No [GPU](gpu.md) acceleration was used, graphics was rendered purely with [CPU](cpu.md) (so called [software rendering](sw_rendering.md), GPU rendering would come with Doom's successor [Quake](quake.md)). This had its limitations, for example the camera could not tilt up and down and the levels could not have rooms above other rooms. For this reason some call Doom "[pseudo 3D](pseudo3d.md)" or 2.5D rather than "true 3D". Nevertheless, though with limitations, Doom did present 3D views and internally it did work with 3D coordinates (for example the player or projectiles have 2D position plus height coordinate), despite some dumb YouTube videos saying otherwise. For this reason we prefer to call Doom a **primitive 3D** engine, but 3D nonetheless. However Doom was not just a game with good graphics, it had extremely good gameplay, legendary music and art style and introduced the revolutionary [deathmatch](deathmatch.md) multiplayer, as well as a HUGE modding and mapping community. It was a success in every way -- arguably no other game has since achieved a greater revolution than Doom.
Other games later used the Doom engine, such as Heretic, Hexen and Strife. The Doom engine was similar to and competing with [Build](build_engine.md) engine that ran games like Duke Nukem 3D, Blood and Shadow Warrior. All of these 90s shooters were amazing in their visuals and looked far better than any [modern](modern.md) shit.
However Doom's success wasn't just due to its graphics, it excelled overall in all areas -- it had brilliant fast and gory gameplay, amazing level design (by John Romero), excellent soundtrack and even a revolutionary [multiplayer](multiplayer.md). The game's backstory was simple and didn't stand in the way of gameplay, it's basically about a tough marine (so called *Doomguy*) on a Mars military base slaying hordes of demons from hell, all in a rock/metal style with a lot of gore and over-the-top violence (chain saws n stuff).