Resource Loading, Tile Mapper, and Biome Painter implementation

engine/world_generation/src/biome_painter.rs

@@ -0,0 +1,33 @@
+use asset_loader::create_asset_loader;
+use bevy::{
+	asset::{Asset, Handle},
+	reflect::TypePath,
+};
+use serde::{Deserialize, Serialize};
+
+use crate::tile_mapper::TileMapperAsset;
+
+#[derive(Serialize, Deserialize, Debug, TypePath, Asset)]
+pub struct BiomePainterAsset {
+	#[serde(skip)]
+	pub biomes: Vec<Handle<TileMapperAsset>>,
+	pub biomes_path: [String; 16],
+}
+
+impl BiomePainterAsset {
+	pub fn sample_biome(&self, moisture: f32, temperature: f32) -> Handle<TileMapperAsset> {
+		let x = (moisture.clamp(0., 1.) * 4.).ceil() as usize;
+		let y = (temperature.clamp(0., 1.) * 4.).ceil() as usize;
+		return self.biomes[x + y * 4].clone();
+	}
+}
+
+create_asset_loader!(
+	BiomePainterPlugin,
+	BiomePainterLoader,
+	BiomePainterAsset,
+	&["bimoes.json"],
+	;
+	biomes_path -> biomes
+	?
+);