we have a general purpose pseudorandom RNG here (complete garbage but it will do)

locate chunk based on location given in world coordinates (fixed point)

4x4 floating point matrix multiply

return the amount of points of an AABB bounding box that are still visible (size of bounding box determined by offsets)

produces two triangles from a single clipped one for the near plane

produces a single clipped triangle if two vertices are behind the camera

camera functions

this modifies the grass color since we want different lighting dependent on time of day

Line code modified from picosystem sdk (Copyright (c) 2021 Pimoroni Ltd) might need further modifying/rewrite (TODO)

process sky color based on time, also provide color bias for shaders

check if the area where the player has changed from the previous frame

Convert 4x4 Matrix to integer

this code handles talking to nearby npcs

set core 1 on its dedicated rasterization function

4x4 matrix debug output

matrix rotation functions (floating point)

4x4 matrix with triangle multiply

4x4 matrix with triangle multiply with w division (for perspective correct vertices)

4x4 matrix with triangle multiply with w division (for perspective correct vertices) using fixed point inputs

4x4 matrix with triangle multiply with w division (for perspective correct vertices) using fixed point inputs

when using reduced 16 bit fixed point vertices (models smaller than 32 meters in each direction from local origin)

when using 32 bit fixed point vertices for large models or if fractional precision has been made higher

overwritten with a bunch of balloon logic but we keep the terminology

triangle debug output