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common: Calculate magic number in Chonk

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This commit is contained in:
haslersn 2019-08-15 02:10:56 +02:00
parent 8451a06804
commit 963c5a7785
1 changed files with 15 additions and 12 deletions
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27
common/src/terrain/chonk.rs
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@ -16,6 +16,20 @@ pub enum ChonkError {
const SUB_CHUNK_HEIGHT: u32 = 16; const SUB_CHUNK_HEIGHT: u32 = 16;
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct SubChunkSize;
impl VolSize for SubChunkSize {
const SIZE: Vec3<u32> = Vec3 {
x: TerrainChunkSize::SIZE.x,
y: TerrainChunkSize::SIZE.y,
z: SUB_CHUNK_HEIGHT,
};
}
const SUB_CHUNK_HASH_LIMIT: usize =
(SubChunkSize::SIZE.x * SubChunkSize::SIZE.y * SubChunkSize::SIZE.z) as usize / 4;
#[derive(Debug, Clone, Serialize, Deserialize)] #[derive(Debug, Clone, Serialize, Deserialize)]
pub struct Chonk { pub struct Chonk {
z_offset: i32, z_offset: i32,
@ -155,7 +169,7 @@ impl WriteVol for Chonk {
map.remove(&rpos.map(|e| e as u8)); map.remove(&rpos.map(|e| e as u8));
Ok(()) Ok(())
} }
SubChunk::Hash(_cblock, map) if map.len() <= 4096 => { SubChunk::Hash(_cblock, map) if map.len() < SUB_CHUNK_HASH_LIMIT => {
map.insert(rpos.map(|e| e as u8), block); map.insert(rpos.map(|e| e as u8), block);
Ok(()) Ok(())
} }
@ -190,17 +204,6 @@ impl WriteVol for Chonk {
} }
} }
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct SubChunkSize;
impl VolSize for SubChunkSize {
const SIZE: Vec3<u32> = Vec3 {
x: TerrainChunkSize::SIZE.x,
y: TerrainChunkSize::SIZE.y,
z: SUB_CHUNK_HEIGHT,
};
}
#[derive(Debug, Clone, Serialize, Deserialize)] #[derive(Debug, Clone, Serialize, Deserialize)]
pub enum SubChunk { pub enum SubChunk {
Homogeneous(Block), Homogeneous(Block),