veloren/world/src/layer/scatter.rs
Marcel Märtens c681992367 Changelog:
-Savanna grasses now only spawn in the savanna and no longer bleed into desert and temperate biomes
-Cacti now only spawn in the desert and density of large cacti has decreased
-Dead bushes are largely unchanged and still spawn in both the savanna and desert with some bleed into temperate biomes
2021-03-03 15:06:34 +01:00

601 lines
19 KiB
Rust

use crate::{column::ColumnSample, sim::SimChunk, Canvas, CONFIG};
use common::terrain::SpriteKind;
use noise::NoiseFn;
use rand::prelude::*;
use std::f32;
use vek::*;
fn close(x: f32, tgt: f32, falloff: f32) -> f32 {
(1.0 - (x - tgt).abs() / falloff).max(0.0).powf(0.125)
}
const MUSH_FACT: f32 = 1.0e-4; // To balance everything around the mushroom spawning rate
const DEPTH_WATER_NORM: f32 = 15.0; // Water depth at which regular underwater sprites start spawning
pub fn apply_scatter_to(canvas: &mut Canvas, rng: &mut impl Rng) {
use SpriteKind::*;
#[allow(clippy::type_complexity)]
// TODO: Add back all sprites we had before
let scatter: &[(
_,
bool,
fn(&SimChunk, &ColumnSample) -> (f32, Option<(f32, f32)>),
)] = &[
// (density, Option<(wavelen, threshold)>)
// Flowers
(BlueFlower, false, |c, col| {
(
close(c.temp, CONFIG.temperate_temp, 0.7).min(close(
c.humidity,
CONFIG.jungle_hum,
0.4,
)) * col.tree_density
* MUSH_FACT
* 256.0,
Some((256.0, 0.25)),
)
}),
(PinkFlower, false, |c, col| {
(
close(c.temp, 0.0, 0.7).min(close(c.humidity, CONFIG.jungle_hum, 0.4))
* col.tree_density
* MUSH_FACT
* 350.0,
Some((100.0, 0.1)),
)
}),
(PurpleFlower, false, |c, col| {
(
close(c.temp, CONFIG.temperate_temp, 0.7).min(close(
c.humidity,
CONFIG.jungle_hum,
0.4,
)) * col.tree_density
* MUSH_FACT
* 350.0,
Some((100.0, 0.1)),
)
}),
(RedFlower, false, |c, col| {
(
close(c.temp, CONFIG.tropical_temp, 0.7).min(close(
c.humidity,
CONFIG.jungle_hum,
0.4,
)) * col.tree_density
* MUSH_FACT
* 350.0,
Some((100.0, 0.1)),
)
}),
(WhiteFlower, false, |c, col| {
(
close(c.temp, 0.0, 0.7).min(close(c.humidity, CONFIG.jungle_hum, 0.4))
* col.tree_density
* MUSH_FACT
* 350.0,
Some((100.0, 0.1)),
)
}),
(YellowFlower, false, |c, col| {
(
close(c.temp, 0.0, 0.7).min(close(c.humidity, CONFIG.jungle_hum, 0.4))
* col.tree_density
* MUSH_FACT
* 350.0,
Some((100.0, 0.1)),
)
}),
(Sunflower, false, |c, col| {
(
close(c.temp, 0.0, 0.7).min(close(c.humidity, CONFIG.jungle_hum, 0.4))
* col.tree_density
* MUSH_FACT
* 350.0,
Some((100.0, 0.15)),
)
}),
// Herbs and Spices
(LingonBerry, false, |c, _| {
(
close(c.temp, 0.3, 0.4).min(close(c.humidity, CONFIG.jungle_hum, 0.5))
* MUSH_FACT
* 2.5,
None,
)
}),
(LeafyPlant, false, |c, _| {
(
close(c.temp, 0.3, 0.4).min(close(c.humidity, CONFIG.jungle_hum, 0.3))
* MUSH_FACT
* 4.0,
None,
)
}),
(Fern, false, |c, _| {
(
close(c.temp, 0.3, 0.4).min(close(c.humidity, CONFIG.forest_hum, 0.5))
* MUSH_FACT
* 0.25,
Some((64.0, 0.2)),
)
}),
(Blueberry, false, |c, _| {
(
close(c.temp, CONFIG.temperate_temp, 0.5).min(close(
c.humidity,
CONFIG.forest_hum,
0.5,
)) * MUSH_FACT
* 0.3,
None,
)
}),
// Collectable Objects
// Only spawn twigs in temperate forests
(Twigs, false, |c, _| {
((c.tree_density - 0.5).max(0.0) * 1.0e-3, None)
}),
(Stones, false, |c, _| {
((c.rockiness - 0.5).max(0.0) * 1.0e-3, None)
}),
// Don't spawn Mushrooms in snowy regions
(Mushroom, false, |c, _| {
(
close(c.temp, 0.3, 0.4).min(close(c.humidity, CONFIG.forest_hum, 0.35)) * MUSH_FACT,
None,
)
}),
// Grass
(ShortGrass, false, |c, _| {
(
close(c.temp, 0.2, 0.65).min(close(c.humidity, CONFIG.jungle_hum, 0.4)) * 0.015,
None,
)
}),
(MediumGrass, false, |c, _| {
(
close(c.temp, 0.2, 0.6).min(close(c.humidity, CONFIG.jungle_hum, 0.4)) * 0.012,
None,
)
}),
(LongGrass, false, |c, _| {
(
close(c.temp, 0.3, 0.35).min(close(c.humidity, CONFIG.jungle_hum, 0.3)) * 0.15,
Some((48.0, 0.2)),
)
}),
// Jungle Sprites
// (LongGrass, false, |c, col| {
// (
// close(c.temp, CONFIG.tropical_temp, 0.4).min(close(
// c.humidity,
// CONFIG.jungle_hum,
// 0.6,
// )) * 0.08,
// Some((60.0, 5.0)),
// )
// }),
/*(WheatGreen, false, |c, col| {
(
close(c.temp, 0.4, 0.2).min(close(c.humidity, CONFIG.forest_hum, 0.1))
* MUSH_FACT
* 0.001,
None,
)
}),*/
(GrassSnow, false, |c, _| {
(
close(c.temp, CONFIG.snow_temp - 0.2, 0.4).min(close(
c.humidity,
CONFIG.forest_hum,
0.5,
)) * 0.01,
Some((48.0, 0.2)),
)
}),
// Savanna Plants
(SavannaGrass, false, |c, _| {
(
{
let savanna = close(c.temp, 1.0, 0.4).min(close(c.humidity, 0.2, 0.25));
let desert = close(c.temp, 1.0, 0.25).min(close(c.humidity, 0.0, 0.1));
(savanna - desert * 5.0).max(0.0)
},
Some((0.5, 0.2)),
)
}),
(TallSavannaGrass, false, |c, _| {
(
{
let savanna = close(c.temp, 1.0, 0.4).min(close(c.humidity, 0.2, 0.25));
let desert = close(c.temp, 1.0, 0.25).min(close(c.humidity, 0.0, 0.1));
(savanna - desert * 5.0).max(0.0)
},
Some((12.5, 0.25)),
)
}),
(RedSavannaGrass, false, |c, _| {
(
{
let savanna = close(c.temp, 1.0, 0.4).min(close(c.humidity, 0.2, 0.25));
let desert = close(c.temp, 1.0, 0.25).min(close(c.humidity, 0.0, 0.1));
(savanna - desert * 5.0).max(0.0)
},
Some((0.1, 0.1)),
)
}),
(SavannaBush, false, |c, _| {
(
{
let savanna = close(c.temp, 1.0, 0.4).min(close(c.humidity, 0.2, 0.25));
let desert = close(c.temp, 1.0, 0.25).min(close(c.humidity, 0.0, 0.1));
(savanna - desert * 5.0).max(0.0)
},
Some((0.08, 0.05)),
)
}),
// Desert Plants
(DeadBush, false, |c, _| {
(
close(c.temp, 1.0, 0.95).min(close(c.humidity, 0.0, 0.3)) * MUSH_FACT * 7.5,
None,
)
}),
(LargeCactus, false, |c, _| {
(
close(c.temp, 1.0, 0.25).min(close(c.humidity, 0.0, 0.1)) * MUSH_FACT * 3.5,
None,
)
}),
(RoundCactus, false, |c, _| {
(
close(c.temp, 1.0, 0.25).min(close(c.humidity, 0.0, 0.1)) * MUSH_FACT * 5.5,
None,
)
}),
(ShortCactus, false, |c, _| {
(
close(c.temp, 1.0, 0.25).min(close(c.humidity, 0.0, 0.1)) * MUSH_FACT * 5.5,
None,
)
}),
(MedFlatCactus, false, |c, _| {
(
close(c.temp, 1.0, 0.25).min(close(c.humidity, 0.0, 0.1)) * MUSH_FACT * 5.5,
None,
)
}),
(ShortFlatCactus, false, |c, _| {
(
close(c.temp, 1.0, 0.25).min(close(c.humidity, 0.0, 0.1)) * MUSH_FACT * 5.5,
None,
)
}),
(Reed, false, |c, col| {
(
close(c.humidity, CONFIG.jungle_hum, 0.7)
* col
.water_dist
.map(|wd| Lerp::lerp(0.2, 0.0, (wd / 8.0).clamped(0.0, 1.0)))
.unwrap_or(0.0),
Some((128.0, 0.5)),
)
}),
// Underwater chests
(ChestBurried, true, |_, col| {
(
MUSH_FACT
* 1.0e-6
* if col.alt < col.water_level - DEPTH_WATER_NORM + 30.0 {
1.0
} else {
0.0
},
None,
)
}),
// Underwater mud piles
(Mud, true, |_, col| {
(
MUSH_FACT
* 1.0e-3
* if col.alt < col.water_level - DEPTH_WATER_NORM {
1.0
} else {
0.0
},
None,
)
}),
// Underwater grass
(GrassBlue, true, |_, col| {
(
MUSH_FACT
* 250.0
* if col.alt < col.water_level - DEPTH_WATER_NORM {
1.0
} else {
0.0
},
Some((100.0, 0.15)),
)
}),
// seagrass
(Seagrass, true, |c, col| {
(
close(c.temp, CONFIG.temperate_temp, 0.8)
* MUSH_FACT
* 300.0
* if col.water_level < CONFIG.sea_level
&& col.alt < col.water_level - DEPTH_WATER_NORM + 18.0
{
1.0
} else {
0.0
},
Some((150.0, 0.3)),
)
}),
// seagrass, coastal patches
(Seagrass, true, |_, col| {
(
MUSH_FACT
* 600.0
* if col.water_level < CONFIG.sea_level && (col.water_level - col.alt) < 3.0 {
1.0
} else {
0.0
},
Some((150.0, 0.4)),
)
}),
// scattered seaweed (temperate species)
(SeaweedTemperate, true, |c, col| {
(
close(c.temp, CONFIG.temperate_temp, 0.8)
* MUSH_FACT
* 50.0
* if col.water_level < CONFIG.sea_level
&& col.alt < col.water_level - DEPTH_WATER_NORM + 11.0
{
1.0
} else {
0.0
},
Some((500.0, 0.75)),
)
}),
// scattered seaweed (tropical species)
(SeaweedTropical, true, |c, col| {
(
close(c.temp, 1.0, 0.95)
* MUSH_FACT
* 50.0
* if col.water_level < CONFIG.sea_level
&& col.alt < col.water_level - DEPTH_WATER_NORM + 11.0
{
1.0
} else {
0.0
},
Some((500.0, 0.75)),
)
}),
// Caulerpa lentillifera algae patch
(SeaGrapes, true, |_, col| {
(
MUSH_FACT
* 250.0
* if col.water_level < CONFIG.sea_level
&& col.alt < col.water_level - DEPTH_WATER_NORM + 10.0
{
1.0
} else {
0.0
},
Some((100.0, 0.15)),
)
}),
// Caulerpa prolifera algae patch
(WavyAlgae, true, |_, col| {
(
MUSH_FACT
* 250.0
* if col.water_level < CONFIG.sea_level
&& col.alt < col.water_level - DEPTH_WATER_NORM + 10.0
{
1.0
} else {
0.0
},
Some((100.0, 0.15)),
)
}),
// Mermaids' fan algae patch
(MermaidsFan, true, |c, col| {
(
close(c.temp, 1.0, 0.95)
* MUSH_FACT
* 500.0
* if col.water_level < CONFIG.sea_level
&& col.alt < col.water_level - DEPTH_WATER_NORM + 10.0
{
1.0
} else {
0.0
},
Some((50.0, 0.10)),
)
}),
// Sea anemones
(SeaAnemone, true, |c, col| {
(
close(c.temp, CONFIG.temperate_temp, 0.8)
* MUSH_FACT
* 125.0
* if col.water_level < CONFIG.sea_level
&& col.alt < col.water_level - DEPTH_WATER_NORM - 9.0
{
1.0
} else {
0.0
},
Some((100.0, 0.3)),
)
}),
// Giant Kelp
(GiantKelp, true, |c, col| {
(
close(c.temp, CONFIG.temperate_temp, 0.8)
* MUSH_FACT
* 220.0
* if col.water_level < CONFIG.sea_level
&& col.alt < col.water_level - DEPTH_WATER_NORM - 9.0
{
1.0
} else {
0.0
},
Some((200.0, 0.4)),
)
}),
// Bull Kelp
(BullKelp, true, |c, col| {
(
close(c.temp, CONFIG.temperate_temp, 0.7)
* MUSH_FACT
* 300.0
* if col.water_level < CONFIG.sea_level
&& col.alt < col.water_level - DEPTH_WATER_NORM + 3.0
{
1.0
} else {
0.0
},
Some((75.0, 0.3)),
)
}),
// Stony Corals
(StonyCoral, true, |c, col| {
(
close(c.temp, 1.0, 0.9)
* MUSH_FACT
* 160.0
* if col.water_level < CONFIG.sea_level
&& col.alt < col.water_level - DEPTH_WATER_NORM + 10.0
{
1.0
} else {
0.0
},
Some((120.0, 0.4)),
)
}),
// Soft Corals
(SoftCoral, true, |c, col| {
(
close(c.temp, 1.0, 0.9)
* MUSH_FACT
* 120.0
* if col.water_level < CONFIG.sea_level
&& col.alt < col.water_level - DEPTH_WATER_NORM + 10.0
{
1.0
} else {
0.0
},
Some((120.0, 0.4)),
)
}),
// Seashells
(Seashells, true, |c, col| {
(
(c.rockiness - 0.5).max(0.0)
* 1.0e-3
* if col.water_level < CONFIG.sea_level
&& col.alt < col.water_level - DEPTH_WATER_NORM + 20.0
{
1.0
} else {
0.0
},
None,
)
}),
(Stones, true, |c, col| {
(
(c.rockiness - 0.5).max(0.0)
* 1.0e-3
* if col.alt < col.water_level - DEPTH_WATER_NORM {
1.0
} else {
0.0
},
None,
)
}),
];
canvas.foreach_col(|canvas, wpos2d, col| {
let underwater = col.water_level > col.alt;
let kind = scatter
.iter()
.enumerate()
.find_map(|(i, (kind, is_underwater, f))| {
let (density, patch) = f(canvas.chunk(), col);
let is_patch = patch
.map(|(wavelen, threshold)| {
canvas
.index()
.noise
.scatter_nz
.get(
wpos2d
.map(|e| e as f64 / wavelen as f64 + i as f64 * 43.0)
.into_array(),
)
.abs()
> 1.0 - threshold as f64
})
.unwrap_or(true);
if density > 0.0
&& is_patch
&& rng.gen::<f32>() < density //RandomField::new(i as u32).chance(Vec3::new(wpos2d.x, wpos2d.y, 0), density)
&& underwater == *is_underwater
{
Some(*kind)
} else {
None
}
});
if let Some(kind) = kind {
let alt = col.alt as i32;
// Find the intersection between ground and air, if there is one near the
// surface
if let Some(solid_end) = (-4..8)
.find(|z| {
canvas
.get(Vec3::new(wpos2d.x, wpos2d.y, alt + z))
.map(|b| b.is_solid())
.unwrap_or(false)
})
.and_then(|solid_start| {
(1..8).map(|z| solid_start + z).find(|z| {
canvas
.get(Vec3::new(wpos2d.x, wpos2d.y, alt + z))
.map(|b| !b.is_solid())
.unwrap_or(true)
})
})
{
canvas.map(Vec3::new(wpos2d.x, wpos2d.y, alt + solid_end), |block| {
block.with_sprite(kind)
});
}
}
});
}