attempt to generate collider on background thread

game/main/src/utlis/chunk_utils.rs

@@ -0,0 +1,51 @@
+#[cfg(feature = "tracing")]
+use bevy::log::*;
+use bevy::{asset::Assets, ecs::system::Res, math::Vec3, render::mesh::Mesh};
+use bevy_rapier3d::geometry::{Collider, TriMeshFlags};
+use world_generation::{
+	biome_painter::BiomePainterAsset,
+	chunk_colliders::generate_chunk_collider,
+	hex_utils::{offset_to_index, offset_to_world},
+	mesh_generator::generate_chunk_mesh,
+	prelude::{Chunk, Map},
+	tile_manager::TileAsset,
+	tile_mapper::TileMapperAsset,
+};
+
+pub fn prepare_chunk_mesh(
+	chunk: &Chunk,
+	heightmap: &Map,
+	painter: &BiomePainterAsset,
+	tile_assets: &Res<Assets<TileAsset>>,
+	tile_mappers: &Res<Assets<TileMapperAsset>>,
+) -> (Mesh, (Vec<Vec3>, Vec<[u32; 3]>), Vec3, usize) {
+	#[cfg(feature = "tracing")]
+	let _gen_mesh = info_span!("Generate Chunk").entered();
+	let mesh = generate_chunk_mesh(chunk, &heightmap, painter, &tile_assets, &tile_mappers);
+	let col_data = generate_chunk_collider(chunk, &heightmap);
+
+	return (
+		mesh,
+		col_data,
+		offset_to_world(chunk.chunk_offset * Chunk::SIZE as i32, 0.),
+		offset_to_index(chunk.chunk_offset, heightmap.width),
+	);
+}
+
+pub fn prepare_chunk_mesh_with_collider(
+	chunk: &Chunk,
+	heightmap: &Map,
+	painter: &BiomePainterAsset,
+	tile_assets: &Res<Assets<TileAsset>>,
+	tile_mappers: &Res<Assets<TileMapperAsset>>,
+) -> (Mesh, Collider, Vec3, usize) {
+	let (mesh, (col_verts, col_indicies), pos, index) =
+		prepare_chunk_mesh(chunk, heightmap, painter, tile_assets, tile_mappers);
+	let collider: Collider;
+	{
+		#[cfg(feature = "tracing")]
+		let _collider_span = info_span!("Create Collider Trimesh").entered();
+		collider = Collider::trimesh_with_flags(col_verts, col_indicies, TriMeshFlags::DELETE_DUPLICATE_TRIANGLES);
+	}
+	return (mesh, collider, pos, index);
+}