thedes_gen/map/layer/
matter.rs

1use thedes_domain::{
2    geometry::CoordPair,
3    map::{AccessError, Map},
4    matter::{Biome, Ground},
5};
6
7use super::{Layer, LayerDistribution};
8
9pub type GroundLayerError = AccessError;
10pub type BiomeLayerError = AccessError;
11pub type GroundDistrError = AccessError;
12
13#[derive(Debug, Clone)]
14pub struct GroundLayer;
15
16impl Layer for GroundLayer {
17    type Data = Ground;
18    type Error = GroundLayerError;
19
20    fn get(
21        &self,
22        map: &mut Map,
23        point: CoordPair,
24    ) -> Result<Self::Data, Self::Error> {
25        map.get_ground(point)
26    }
27
28    fn set(
29        &self,
30        map: &mut Map,
31        point: CoordPair,
32        value: Self::Data,
33    ) -> Result<(), Self::Error> {
34        map.set_ground(point, value)
35    }
36}
37
38#[derive(Debug, Clone)]
39pub struct BiomeLayer;
40
41impl Layer for BiomeLayer {
42    type Data = Biome;
43    type Error = BiomeLayerError;
44
45    fn get(
46        &self,
47        map: &mut Map,
48        point: CoordPair,
49    ) -> Result<Self::Data, Self::Error> {
50        map.get_biome(point)
51    }
52
53    fn set(
54        &self,
55        map: &mut Map,
56        point: CoordPair,
57        value: Self::Data,
58    ) -> Result<(), Self::Error> {
59        map.set_biome(point, value)
60    }
61}
62
63#[derive(Debug, Clone)]
64pub struct GroundLayerDistr {
65    _private: (),
66}
67
68impl Default for GroundLayerDistr {
69    fn default() -> Self {
70        Self { _private: () }
71    }
72}
73
74impl LayerDistribution for GroundLayerDistr {
75    type Data = Ground;
76    type Error = GroundDistrError;
77
78    fn sample<R>(
79        &self,
80        map: &mut Map,
81        point: CoordPair,
82        _rng: R,
83    ) -> Result<Self::Data, Self::Error>
84    where
85        R: rand::Rng,
86    {
87        let ground = match map.get_biome(point)? {
88            Biome::Plains => Ground::Grass,
89            Biome::Desert => Ground::Sand,
90            Biome::Wasteland => Ground::Stone,
91        };
92        Ok(ground)
93    }
94}
thedes_gen/map/layer/matter.rs

thedes_gen/map/layer/
matter.rs
