roymasad/3draycaster

Python retro basic 3d Wolfenstein textured walls raycaster game engine using DDA to optimize/reduce ray casting steps.

More open source repos coming soon, well depending on music mood !

3draycaster's Issues

Prevent player from spamming the fire button

Add bounce filter

Surface blitting with alpha or color key too slow using pygame

I wasn't expecting this to be honest but simply adding a shotgun png with transparency is tanking the fps.

The bigger the sprite the bigger the impact. Normal sprites don't suffer.

Using color keys instead of alpha is around 20 percent faster, but still not good enough.

So this is an issue that requires enhancement.

• Either use the experimental .sdl2 extension of pygame
• or just use Pyglet instead directly

Wall scaling crashes application randomly sometimes

in some situations we get runtime error:

"pygame.error: Size too large for scaling"

maybe when walking backwards? i didn't manage to recreate it consistently, but it happens when u are close to a wall.

on line 342 in main.python: (line number as of this post)

wall_slice_surface = pygame.transform.scale(wall_slice_surface, (2, slice_height))

The aiming crosshair doesn't align vertically with the shotgun center

The crosshair is horizontally centered to half the screen width, but it doesnt align with the shotgun vertically because the texture has an offset

Proposed fix:

Offset the original shotgun texture to the left by a few pixels

Sprite rendering sort ordering sometimes doesn't work

The tiny guy on the right is actually behind the wall

Only appears on certain viewing angles it seems

Additionally in certain viewing angles sprites disappear from plain view also (probably a different section of code causing this in the initial sprite screen projection calculation)