biome sampling

engine/world_generation/src/biome_painter.rs

@@ -2,23 +2,41 @@ use asset_loader::create_asset_loader;
 use bevy::{
 	asset::{Asset, Handle},
 	reflect::TypePath,
+	render::render_resource::encase::rts_array::Length,
 };
 use serde::{Deserialize, Serialize};
 
-use crate::tile_mapper::TileMapperAsset;
+use crate::biome_asset::BiomeAsset;
 
 #[derive(Serialize, Deserialize, Debug, TypePath, Asset, Clone)]
 pub struct BiomePainterAsset {
 	#[serde(skip)]
-	pub biomes: Vec<Handle<TileMapperAsset>>,
-	pub biomes_path: [String; 16],
+	pub biomes: Vec<Handle<BiomeAsset>>,
+	pub biomes_path: Vec<String>,
 }
 
 impl BiomePainterAsset {
-	pub fn sample_biome(&self, moisture: f32, temperature: f32) -> Handle<TileMapperAsset> {
-		let x = (moisture.clamp(0., 1.) * 3.).ceil() as usize;
-		let y = (temperature.clamp(0., 1.) * 3.).ceil() as usize;
-		return self.biomes[x + y * 4].clone();
+	pub fn sample_biome(
+		&self,
+		assets: &Assets<BiomeAsset>,
+		moisture: f32,
+		temperature: f32,
+		continentality: f32,
+	) -> Handle<BiomeAsset> {
+		assert!(self.biomes.length() != 0, "There are no biomes");
+		let mut biome = self.biomes.first().unwrap().clone();
+		let mut dist = f32::INFINITY;
+
+		for b in &self.biomes {
+			let asset = assets.get(b).unwrap();
+			let d = asset.distance(moisture, temperature, continentality);
+			if d < dist {
+				biome = b.clone();
+				dist = d;
+			}
+		}
+
+		return biome;
 	}
 }