amend todos

todo.md

@@ -1,11 +1,14 @@
-# current tasks
-yoink implementation of mesh into meshes.zig so i could modify it to add ambient occlusion vars
-implement ambient occlusion either
- - via passing extra info to shader (can use 132 bits to indicate what tiles around the quad are obsuring light. need to pass as an extra variable)
-implement animations (smooth or minecraft like), random orientation/mirroring, metallicity (shine on edges)
-implement second layer of textures on top of first one for more details
-limit vertical camera rotations
+# world generation
+1. world state "object" which will keep track of chunks to generate, to remove, to keep, those that are currently being generated in a thread pool.
+2. parallelised creeping chunk generation in a radius.
+3. removing of chunks when they go outside the radius. 
+4. interlinked chunks; each chunk should have a ptr to the 26 neighbor chunks or null. 
+5. world state linking and unlinking chunks automatically. 
+6. ambient occlusion spanning between chunks.
+7. chunk loading, unloading, saving/loading from files; world state keeping track of chunks loaded and unloaded as well
+8. generation of (LOD) simplified chunk models
+9. generation of simplified chunks 
+10. separate LOD radiuses for different LOD levels
+11. partial chunk loading and unloading.
 
-# future tasks
-implement chunk meshing cache to reduce delay on block placement 
-investigate binary/SIMD meshing for performance
+# directional light