My personal hobby game engine: The Griswell Engine! - ⚽︎ ∙ Video Game Projects - MelonLand Forum

• My personal hobby game engine: The Griswell Engine!
  Posted by GideonWilhelm on 27 Jan, 2026 14:42
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  I'm so proud to show this off, despite how early it is.  But it's just so smooth, even locked at 30 FPS!  It's rendered entirely on the CPU, and there's currently a limitation that there can be only one texture per mesh, and I think I'm gonna stick to that for as long as I can.  The mouselook is done by angular momentum, where you basically treat the mouse like a thumbstick, and just count how far the player moves the mouse each frame and apply some really subtle acceleration and deceleration.  I'm so excited that it actually works!  I'm gonna start off with a King's Field sort of game and just kinda keep upgrading it from there.
• #1 Reply
  Posted by oldmurray34 on 28 Jan, 2026 08:12
• This is awesome! Now you gotta make your version of Doom on it 
  
  Btw what is the weakest hardware that puppy can run on?
• #2 Reply
  Posted by GideonWilhelm on 28 Jan, 2026 14:58
• I don't know the weakest hardware yet, the project is still pretty young!  But I am shooting for a 64-bit processor as the target.  It seems a good midpoint between luddism and modern hardware, and I do want to experiment with multithreading later on.  Right now I'm learning the hard way why I should've been doing screen edge plane clipping all this time, once I get that squared away I'll focus on more fully implementing the gltf importer and getting ready to create entities.
• #3 Reply
  Posted by GideonWilhelm on 30 Jan, 2026 02:23
• Update: implemented proper frustum culling and added depth fog and I gotta say, it's pretty gorgeous so far!  (I might be procrastinating on setting up a texture bank so objects can look different lol)  It took a bit to realize that anything relying on actual distance from the camera needs to have those distances set up in view space, before projection, because the depth buffer is non-linear (floating point numbers are more densely packed near zero than one)
  
  overall, I like it, I think it has character

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