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Better rocks

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This commit is contained in:
Isidor Nielsen 2022-03-02 16:28:04 +00:00 committed by Joshua Barretto
parent 40d5920ca2
commit bd8a7a0506
17 changed files with 620 additions and 238 deletions
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1
CHANGELOG.md
View File

@ -9,6 +9,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
### Added
- Waypoints saved between sessions and shared with group members.
- New rocks
### Changed

1
assets/world/features.ron
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@ -4,6 +4,7 @@
(
caverns: false, // TODO: Disabled by default until cave overhaul
caves: true,
rocks: true,
shrubs: true,
trees: true,
scatter: true,

4
world/src/all.rs
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@ -1,7 +1,7 @@
use crate::util::math::close;
use enum_iterator::IntoEnumIterator;
use std::ops::Range;
use vek::*;
use vek::Vec2;
#[derive(Copy, Clone, Debug, IntoEnumIterator)]
pub enum ForestKind {
@ -113,6 +113,8 @@ impl ForestKind {
}
}
/// Not currently used with trees generated by the tree layer, needs to be
/// reworked
pub struct TreeAttr {
pub pos: Vec2<i32>,
pub seed: u32,

28
world/src/block/mod.rs
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@ -77,7 +77,7 @@ impl<'a> BlockGen<'a> {
marble: _,
marble_mid: _,
marble_small: _,
rock,
rock_density: _,
// temp,
// humidity,
stone_col,
@ -183,28 +183,6 @@ impl<'a> BlockGen<'a> {
} else {
None
}
.or_else(|| {
// Rocks
if (height + 2.5 - wposf.z as f32).div(7.5).abs().powi(2) < rock {
let field0 = RandomField::new(world.seed + 0);
let field1 = RandomField::new(world.seed + 1);
let field2 = RandomField::new(world.seed + 2);
Some(Block::new(
BlockKind::WeakRock,
stone_col.map2(
Rgb::new(
field0.get(wpos) as u8 % 16,
field1.get(wpos) as u8 % 16,
field2.get(wpos) as u8 % 16,
),
|stone, x| stone.saturating_sub(x),
),
))
} else {
None
}
})
.or_else(|| {
let over_water = height < water_height;
// Water
@ -232,11 +210,9 @@ impl<'a> ZCache<'a> {
- self.sample.cliff_offset.max(0.0);
let min = min - 4.0;
let rocks = if self.sample.rock > 0.0 { 12.0 } else { 0.0 };
let warp = self.sample.chaos * 32.0;
let ground_max = self.sample.alt + warp + rocks + 2.0;
let ground_max = self.sample.alt + warp + 2.0;
let max = ground_max.max(self.sample.water_level + 2.0 + self.sample.ice_depth);

17
world/src/column/mod.rs
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@ -841,17 +841,8 @@ impl<'a> Sampler<'a> for ColumnGen<'a> {
let alt = alt + riverless_alt_delta;
let basement =
alt + sim.get_interpolated_monotone(wpos, |chunk| chunk.basement.sub(chunk.alt))?;
let rock = (sim.gen_ctx.small_nz.get(
Vec3::new(wposf.x, wposf.y, alt as f64)
.div(100.0)
.into_array(),
) as f32)
//.mul(water_dist.map(|wd| (wd / 2.0).clamped(0.0, 1.0).sqrt()).unwrap_or(1.0))
.mul(rockiness)
.sub(0.4)
.max(0.0)
.mul(8.0);
// Adjust this to make rock placement better
let rock_density = rockiness;
// Columns near water have a more stable temperature and so get pushed towards
// the average (0)
@ -1182,7 +1173,7 @@ impl<'a> Sampler<'a> for ColumnGen<'a> {
marble,
marble_mid,
marble_small,
rock,
rock_density,
temp,
humidity,
spawn_rate,
@ -1217,7 +1208,7 @@ pub struct ColumnSample<'a> {
pub marble: f32,
pub marble_mid: f32,
pub marble_small: f32,
pub rock: f32,
pub rock_density: f32,
pub temp: f32,
pub humidity: f32,
pub spawn_rate: f32,

1
world/src/config.rs
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@ -81,6 +81,7 @@ pub const CONFIG: Config = Config {
pub struct Features {
pub caverns: bool,
pub caves: bool,
pub rocks: bool,
pub shrubs: bool,
pub trees: bool,
pub scatter: bool,

4
world/src/layer/mod.rs
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@ -1,3 +1,4 @@
pub mod rock;
pub mod scatter;
pub mod shrub;
pub mod spot;
@ -5,7 +6,8 @@ pub mod tree;
pub mod wildlife;
pub use self::{
scatter::apply_scatter_to, shrub::apply_shrubs_to, spot::apply_spots_to, tree::apply_trees_to,
rock::apply_rocks_to, scatter::apply_scatter_to, shrub::apply_shrubs_to, spot::apply_spots_to,
tree::apply_trees_to,
};
use crate::{

348
world/src/layer/rock.rs Normal file
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@ -0,0 +1,348 @@
use crate::{
util::{
gen_cache::StructureGenCache, seed_expan, RandomField, Sampler, StructureGen2d,
UnitChooser, NEIGHBORS, NEIGHBORS3,
},
Canvas, ColumnSample, CONFIG,
};
use common::terrain::{Block, BlockKind};
use ordered_float::NotNan;
use rand::prelude::*;
use rand_chacha::ChaChaRng;
use vek::*;
struct Rock {
wpos: Vec3<i32>,
seed: u32,
units: Vec2<Vec2<i32>>,
kind: RockKind,
}
pub fn apply_rocks_to(canvas: &mut Canvas, _dynamic_rng: &mut impl Rng) {
let mut rock_gen = StructureGenCache::new(StructureGen2d::new(canvas.index().seed, 24, 10));
let info = canvas.info();
canvas.foreach_col(|canvas, wpos2d, col| {
let rocks = rock_gen.get(wpos2d, |wpos, seed| {
let col = info.col_or_gen(wpos)?;
let mut rng = ChaChaRng::from_seed(seed_expan::rng_state(seed));
const BASE_ROCK_DENSITY: f64 = 0.15;
if rng.gen_bool((BASE_ROCK_DENSITY * col.rock_density as f64).clamped(0.0, 1.0))
&& col.path.map_or(true, |(d, _, _, _)| d > 6.0)
{
match (
(col.alt - CONFIG.sea_level) as i32,
(col.alt - col.water_level) as i32,
col.water_dist.map_or(i32::MAX, |d| d as i32),
) {
(-3..=2, _, _) => {
if rng.gen_bool(0.3) {
Some(RockKind::Rauk(Pillar::generate(&mut rng)))
} else {
Some(RockKind::Rock(VoronoiCell::generate(
rng.gen_range(1.0..3.0),
&mut rng,
)))
}
},
(_, -15..=3, _) => Some(RockKind::Rock(VoronoiCell::generate(
rng.gen_range(1.0..4.0),
&mut rng,
))),
(5..=i32::MAX, _, 10..=i32::MAX) => {
if col.temp > CONFIG.desert_temp - 0.1
&& col.humidity < CONFIG.desert_hum + 0.1
{
Some(RockKind::Sandstone(VoronoiCell::generate(
rng.gen_range(2.0..20.0 - 15.0 * col.tree_density),
&mut rng,
)))
} else {
Some(RockKind::Rock(VoronoiCell::generate(
rng.gen_range(2.0..20.0 - 15.0 * col.tree_density),
&mut rng,
)))
}
},
_ => None,
}
.map(|kind| Rock {
wpos: wpos.with_z(col.alt as i32),
seed,
units: UnitChooser::new(seed).get(seed).into(),
kind,
})
} else {
None
}
});
for rock in rocks {
let bounds = rock.kind.get_bounds();
let rpos2d = (wpos2d - rock.wpos.xy())
.map2(rock.units, |p, unit| unit * p)
.sum();
if !Aabr::from(bounds).contains_point(rpos2d) {
// Skip this column
continue;
}
let mut is_top = true;
let mut last_block = Block::empty();
for z in (bounds.min.z..bounds.max.z).rev() {
let wpos = Vec3::new(wpos2d.x, wpos2d.y, rock.wpos.z + z);
let model_pos = (wpos - rock.wpos)
.xy()
.map2(rock.units, |rpos, unit| unit * rpos)
.sum()
.with_z(wpos.z - rock.wpos.z);
rock.kind
.take_sample(model_pos, rock.seed, last_block, col)
.map(|block| {
if col.snow_cover && is_top && block.is_filled() {
canvas.set(
wpos + Vec3::unit_z(),
Block::new(BlockKind::Snow, Rgb::new(210, 210, 255)),
);
}
canvas.set(wpos, block);
is_top = false;
last_block = block;
});
}
}
});
}
struct VoronoiCell {
size: f32,
points: [Vec3<f32>; 26],
}
impl VoronoiCell {
fn generate(size: f32, rng: &mut impl Rng) -> Self {
let mut points = [Vec3::zero(); 26];
for (i, p) in NEIGHBORS3.iter().enumerate() {
points[i] = p.as_() * size
+ Vec3::new(
rng.gen_range(-0.5..=0.5) * size,
rng.gen_range(-0.5..=0.5) * size,
rng.gen_range(-0.5..=0.5) * size,
);
}
Self { size, points }
}
fn sample_at(&self, rpos: Vec3<i32>) -> bool {
let rposf = rpos.as_();
// Would theoretically only need to compare with 7 other points rather than 26,
// by checking all the points in the cells touching the closest corner of this
// point.
rposf.magnitude_squared()
<= *(0..26)
.map(|i| self.points[i].distance_squared(rposf))
.map(|d| NotNan::new(d).unwrap())
.min()
.unwrap()
}
}
struct Pillar {
height: f32,
max_extent: Vec2<f32>,
extents: [Vec2<f32>; 3],
}
impl Pillar {
fn generate(rng: &mut impl Rng) -> Self {
let extents = [
Vec2::new(rng.gen_range(0.5..1.5), rng.gen_range(0.5..1.5)),
Vec2::new(rng.gen_range(0.8..2.8), rng.gen_range(0.8..2.8)),
Vec2::new(rng.gen_range(0.5..1.5), rng.gen_range(0.5..3.5)),
];
Self {
height: rng.gen_range(6.0..16.0),
extents,
max_extent: extents
.iter()
.cloned()
.reduce(|accum, item| accum.map2(item, |a, b| a.max(b)))
.unwrap(),
}
}
fn sample_at(&self, rpos: Vec3<i32>) -> bool {
let h = rpos.z as f32 / self.height;
let extent = if h < 0.0 {
self.extents[0] * (-h).max(1.0)
} else if h < 0.5 {
self.extents[0].map2(self.extents[1], |l, m| f32::lerp(l, m, h * 2.0))
} else if h < 1.0 {
self.extents[1].map2(self.extents[2], |m, t| f32::lerp(m, t, (h - 0.5) * 2.0))
} else {
self.extents[2]
};
h < 1.0
&& extent
.map2(rpos.xy(), |e, p| p.abs() < e.ceil() as i32)
.reduce_and()
}
}
enum RockKind {
// A normal rock with a size
Rock(VoronoiCell),
Sandstone(VoronoiCell),
Rauk(Pillar),
// Arch,
// Hoodoos,
}
impl RockKind {
fn take_sample(
&self,
rpos: Vec3<i32>,
seed: u32,
last_block: Block,
col: &ColumnSample,
) -> Option<Block> {
// Used to debug get_bounds
/*
let bounds = self.get_bounds();
if rpos
.map3(
bounds.min,
bounds.max,
|e, a, b| if e == a || e == b { 1 } else { 0 },
)
.sum()
>= 2
{
return Some(Block::new(BlockKind::Rock, Rgb::red()));
}
*/
match self {
RockKind::Rock(cell) => {
if cell.sample_at(rpos) {
let mossiness = 0.1
+ RandomField::new(seed).get_f32(Vec3::zero()) * 0.3
+ col.humidity * 0.9;
Some(
if last_block.is_filled()
|| (rpos.z as f32 / cell.size
+ RandomField::new(seed).get_f32(rpos) * 0.3
> mossiness)
{
let mut i = 0;
Block::new(
BlockKind::WeakRock,
col.stone_col.map(|c| {
i += 1;
c + RandomField::new(seed).get(rpos) as u8 % 10
}),
)
} else {
Block::new(
BlockKind::Grass,
col.surface_color.map(|e| (e * 255.0) as u8),
)
},
)
} else {
None
}
},
RockKind::Sandstone(cell) => {
if cell.sample_at(rpos) {
let sandiness = 0.3 + RandomField::new(seed).get_f32(Vec3::zero()) * 0.4;
Some(
if last_block.is_filled()
|| (rpos.z as f32 / cell.size
+ RandomField::new(seed).get_f32(rpos) * 0.3
> sandiness)
{
let mut i = 0;
Block::new(
BlockKind::WeakRock,
Rgb::new(220, 160, 100).map(|c| {
i += 1;
c + RandomField::new(seed + i).get(Vec2::zero().with_z(rpos.z))
as u8
% 30
}),
)
} else {
Block::new(
BlockKind::Grass,
col.surface_color.map(|e| (e * 255.0) as u8),
)
},
)
} else {
None
}
},
RockKind::Rauk(pillar) => {
let max_extent = *pillar
.max_extent
.map(|e| NotNan::new(e).unwrap())
.reduce_max();
let is_filled = |rpos| {
pillar.sample_at(rpos)
&& RandomField::new(seed).chance(
rpos,
1.5 - rpos.z as f32 / pillar.height
- rpos.xy().as_::<f32>().magnitude() / max_extent,
)
};
if is_filled(rpos) ||
// Prevent floating blocks
(last_block.is_filled()
&& NEIGHBORS
.iter()
.map(|n| !is_filled(rpos + n.with_z(0)))
.all(|b| b))
{
Some(Block::new(
BlockKind::WeakRock,
Rgb::new(
190 + RandomField::new(seed + 1).get(rpos) as u8 % 10,
190 + RandomField::new(seed + 2).get(rpos) as u8 % 10,
190 + RandomField::new(seed + 3).get(rpos) as u8 % 10,
),
))
} else {
None
}
},
}
}
fn get_bounds(&self) -> Aabb<i32> {
match self {
RockKind::Rock(VoronoiCell { size, .. })
| RockKind::Sandstone(VoronoiCell { size, .. }) => {
// Need to use full size because rock can bleed over into other cells
let extent = *size as i32;
Aabb {
min: Vec3::broadcast(-extent),
max: Vec3::broadcast(extent),
}
},
RockKind::Rauk(Pillar {
max_extent: extent,
height,
..
}) => Aabb {
min: (-extent.as_()).with_z(-2),
max: extent.as_().with_z(*height as i32),
},
}
}
}

14
world/src/layer/shrub.rs
View File

@ -1,13 +1,12 @@
use crate::{
all::ForestKind,
util::{seed_expan, Sampler, StructureGen2d, UnitChooser},
util::{gen_cache::StructureGenCache, seed_expan, Sampler, StructureGen2d, UnitChooser},
Canvas,
};
use common::{
assets::AssetHandle,
terrain::structure::{Structure, StructuresGroup},
};
use hashbrown::HashMap;
use lazy_static::lazy_static;
use rand::prelude::*;
use rand_chacha::ChaChaRng;
@ -29,14 +28,12 @@ struct Shrub {
}
pub fn apply_shrubs_to(canvas: &mut Canvas, _dynamic_rng: &mut impl Rng) {
let mut shrub_cache = HashMap::new();
let shrub_gen = StructureGen2d::new(canvas.index().seed, 8, 4);
let mut shrub_gen = StructureGenCache::new(StructureGen2d::new(canvas.index().seed, 8, 4));
let info = canvas.info();
canvas.foreach_col(|_, wpos2d, _| {
for (wpos, seed) in shrub_gen.get(wpos2d) {
shrub_cache.entry(wpos).or_insert_with(|| {
shrub_gen.get(wpos2d, |wpos, seed| {
let col = info.col_or_gen(wpos)?;
let mut rng = ChaChaRng::from_seed(seed_expan::rng_state(seed));
@ -66,10 +63,9 @@ pub fn apply_shrubs_to(canvas: &mut Canvas, _dynamic_rng: &mut impl Rng) {
None
}
});
}
});
for shrub in shrub_cache.values().filter_map(|s| s.as_ref()) {
for shrub in shrub_gen.generated() {
let mut rng = ChaChaRng::from_seed(seed_expan::rng_state(shrub.seed));
let units = UnitChooser::new(shrub.seed).get(shrub.seed).into();

62
world/src/layer/tree.rs
View File

@ -2,7 +2,7 @@ use crate::{
all::*,
block::block_from_structure,
column::ColumnGen,
util::{RandomPerm, Sampler, UnitChooser},
util::{gen_cache::StructureGenCache, RandomPerm, Sampler, UnitChooser},
Canvas,
};
use common::{
@ -14,7 +14,6 @@ use common::{
},
vol::ReadVol,
};
use hashbrown::HashMap;
use lazy_static::lazy_static;
use rand::prelude::*;
use std::{f32, ops::Range};
@ -51,24 +50,23 @@ pub fn apply_trees_to(
model: TreeModel,
seed: u32,
units: (Vec2<i32>, Vec2<i32>),
lights: bool,
}
let mut tree_cache = HashMap::new();
let info = canvas.info();
canvas.foreach_col(|canvas, wpos2d, col| {
let trees = info.chunks().get_near_trees(wpos2d);
let mut tree_cache = StructureGenCache::new(info.chunks().gen_ctx.structure_gen.clone());
for TreeAttr {
pos,
seed,
scale,
forest_kind,
inhabited,
} in trees
{
let tree = if let Some(tree) = tree_cache.entry(pos).or_insert_with(|| {
let col = ColumnGen::new(info.chunks()).get((pos, info.index(), calendar))?;
canvas.foreach_col(|canvas, wpos2d, col| {
let trees = tree_cache.get(wpos2d, |wpos, seed| {
let scale = 1.0;
let inhabited = false;
let forest_kind = *info
.chunks()
.make_forest_lottery(wpos)
.choose_seeded(seed)
.as_ref()?;
let col = ColumnGen::new(info.chunks()).get((wpos, info.index(), calendar))?;
// Ensure that it's valid to place a *thing* here
if col.alt < col.water_level
@ -85,12 +83,10 @@ pub fn apply_trees_to(
}
Some(Tree {
pos: Vec3::new(pos.x, pos.y, col.alt as i32),
pos: Vec3::new(wpos.x, wpos.y, col.alt as i32),
model: 'model: {
let models: AssetHandle<_> = match forest_kind {
ForestKind::Oak if QUIRKY_RAND.chance(seed + 1, 1.0 / 16.0) => {
*OAK_STUMPS
},
ForestKind::Oak if QUIRKY_RAND.chance(seed + 1, 1.0 / 16.0) => *OAK_STUMPS,
ForestKind::Oak if QUIRKY_RAND.chance(seed + 2, 1.0 / 20.0) => {
break 'model TreeModel::Procedural(
ProceduralTree::generate(
@ -140,11 +136,7 @@ pub fn apply_trees_to(
ForestKind::Pine => {
break 'model TreeModel::Procedural(
ProceduralTree::generate(
TreeConfig::pine(
&mut RandomPerm::new(seed),
scale,
calendar,
),
TreeConfig::pine(&mut RandomPerm::new(seed), scale, calendar),
&mut RandomPerm::new(seed),
),
StructureBlock::PineLeaves,
@ -191,11 +183,7 @@ pub fn apply_trees_to(
ForestKind::Giant => {
break 'model TreeModel::Procedural(
ProceduralTree::generate(
TreeConfig::giant(
&mut RandomPerm::new(seed),
scale,
inhabited,
),
TreeConfig::giant(&mut RandomPerm::new(seed), scale, inhabited),
&mut RandomPerm::new(seed),
),
StructureBlock::TemperateLeaves,
@ -205,20 +193,18 @@ pub fn apply_trees_to(
let models = models.read();
TreeModel::Structure(
models[(MODEL_RAND.get(seed.wrapping_mul(17)) / 13) as usize
% models.len()]
models
[(MODEL_RAND.get(seed.wrapping_mul(17)) / 13) as usize % models.len()]
.clone(),
)
},
seed,
units: UNIT_CHOOSER.get(seed),
lights: inhabited,
})
}) {
tree
} else {
continue;
};
});
for tree in trees {
let bounds = match &tree.model {
TreeModel::Structure(s) => s.get_bounds(),
TreeModel::Procedural(t, _) => t.get_bounds().map(|e| e as i32),
@ -279,7 +265,7 @@ pub fn apply_trees_to(
)
.map(|block| {
// Add lights to the tree
if inhabited
if tree.lights
&& last_block.is_air()
&& block.kind() == BlockKind::Wood
&& dynamic_rng.gen_range(0..256) == 0

4
world/src/layer/wildlife.rs
View File

@ -137,7 +137,7 @@ pub fn spawn_manifest() -> Vec<(&'static str, DensityFn)> {
// **Tundra**
// Rock animals
("world.wildlife.spawn.tundra.rock", |c, col| {
close(c.temp, CONFIG.snow_temp, 0.15) * BASE_DENSITY * col.rock * 1.0
close(c.temp, CONFIG.snow_temp, 0.15) * BASE_DENSITY * col.rock_density * 1.0
}),
// Core animals
("world.wildlife.spawn.tundra.core", |c, _col| {
@ -282,7 +282,7 @@ pub fn spawn_manifest() -> Vec<(&'static str, DensityFn)> {
}),
// Rock animals
("world.wildlife.spawn.tropical.rock", |c, col| {
close(c.temp, CONFIG.tropical_temp + 0.1, 0.5) * col.rock * BASE_DENSITY * 5.0
close(c.temp, CONFIG.tropical_temp + 0.1, 0.5) * col.rock_density * BASE_DENSITY * 5.0
}),
// **Desert**
// Area animals

3
world/src/lib.rs
View File

@ -366,6 +366,9 @@ impl World {
if index.features.caves {
layer::apply_caves_to(&mut canvas, &mut dynamic_rng);
}
if index.features.rocks {
layer::apply_rocks_to(&mut canvas, &mut dynamic_rng);
}
if index.features.shrubs {
layer::apply_shrubs_to(&mut canvas, &mut dynamic_rng);
}

1
world/src/sim/mod.rs
View File

@ -2124,6 +2124,7 @@ impl WorldSim {
)
}
/// WARNING: Not currently used by the tree layer. Needs to be reworked.
/// Return an iterator over candidate tree positions (note that only some of
/// these will become trees since environmental parameters may forbid
/// them spawning).

41
world/src/util/gen_cache.rs Normal file
View File

@ -0,0 +1,41 @@
use hashbrown::HashMap;
use vek::Vec2;
use super::{Sampler, StructureGen2d};
pub struct StructureGenCache<T> {
gen: StructureGen2d,
// TODO: Compare performance of using binary search instead of hashmap
cache: HashMap<Vec2<i32>, Option<T>>,
}
impl<T> StructureGenCache<T> {
pub fn new(gen: StructureGen2d) -> Self {
Self {
gen,
cache: HashMap::new(),
}
}
pub fn get(
&mut self,
index: Vec2<i32>,
mut generate: impl FnMut(Vec2<i32>, u32) -> Option<T>,
) -> Vec<&T> {
let close = self.gen.get(index);
for (wpos, seed) in close {
self.cache
.entry(wpos)
.or_insert_with(|| generate(wpos, seed));
}
close
.iter()
.filter_map(|(wpos, _)| self.cache.get(wpos).unwrap().as_ref())
.collect()
}
pub fn generated(&self) -> impl Iterator<Item = &T> {
self.cache.values().filter_map(|v| v.as_ref())
}
}

30
world/src/util/mod.rs
View File

@ -1,4 +1,5 @@
pub mod fast_noise;
pub mod gen_cache;
pub mod map_array;
pub mod map_vec;
pub mod math;
@ -64,6 +65,35 @@ pub const NEIGHBORS: [Vec2<i32>; 8] = [
Vec2::new(1, -1),
];
pub const NEIGHBORS3: [Vec3<i32>; 26] = [
Vec3::new(0, 0, -1),
Vec3::new(0, 0, 1),
Vec3::new(0, -1, 0),
Vec3::new(0, -1, -1),
Vec3::new(0, -1, 1),
Vec3::new(0, 1, 0),
Vec3::new(0, 1, -1),
Vec3::new(0, 1, 1),
Vec3::new(-1, 0, 0),
Vec3::new(-1, 0, -1),
Vec3::new(-1, 0, 1),
Vec3::new(-1, -1, 0),
Vec3::new(-1, -1, -1),
Vec3::new(-1, -1, 1),
Vec3::new(-1, 1, 0),
Vec3::new(-1, 1, -1),
Vec3::new(-1, 1, 1),
Vec3::new(1, 0, 0),
Vec3::new(1, 0, -1),
Vec3::new(1, 0, 1),
Vec3::new(1, -1, 0),
Vec3::new(1, -1, -1),
Vec3::new(1, -1, 1),
Vec3::new(1, 1, 0),
Vec3::new(1, 1, -1),
Vec3::new(1, 1, 1),
];
pub const LOCALITY: [Vec2<i32>; 9] = [
Vec2::new(0, 0),
Vec2::new(0, 1),

6
world/src/util/random.rs
View File

@ -10,8 +10,10 @@ pub struct RandomField {
impl RandomField {
pub const fn new(seed: u32) -> Self { Self { seed } }
pub fn chance(&self, pos: Vec3<i32>, chance: f32) -> bool {
(self.get(pos) % (1 << 16)) as f32 / ((1 << 16) as f32) < chance
pub fn chance(&self, pos: Vec3<i32>, chance: f32) -> bool { self.get_f32(pos) < chance }
pub fn get_f32(&self, pos: Vec3<i32>) -> f32 {
(self.get(pos) % (1 << 16)) as f32 / ((1 << 16) as f32)
}
}

1
world/src/util/structure.rs
View File

@ -2,6 +2,7 @@ use super::{RandomField, Sampler};
use rayon::prelude::*;
use vek::*;
#[derive(Clone)]
pub struct StructureGen2d {
freq: u32,
spread: u32,