feat(environment): add adaptive atmospheric fog

src/data/world/fogConfig.ts

@@ -1,17 +1,39 @@
 import { TERRAIN_COLORS } from "@/data/world/terrainConfig";
 
+export type FogMode = "linear" | "exp2";
+
 export const FOG_CONFIG = {
   enabled: true,
-  color: "#dce8df",
-  near: 38,
-  far: 45,
+  mode: "exp2" as FogMode,
+  color: "#dfe7d8",
+  near: 32,
+  far: 48,
+  density: 0.032,
 };
 
+export const FOG_LIGHTING_COLOR_MIX = {
+  ambient: 0.3,
+  sun: 0.7,
+};
+
+export const FOG_BOUNDS = {
+  near: { min: 0, max: 100, step: 1 },
+  far: { min: 1, max: 160, step: 1 },
+  density: { min: 0.001, max: 0.05, step: 0.001 },
+};
+
+export interface FogState {
+  density: number;
+  far: number;
+  mode: FogMode;
+  near: number;
+}
+
 export const CHUNK_CONFIG = {
   enabled: true,
   chunkSize: 35,
-  loadRadius: 45,
-  unloadRadius: 45,
+  loadRadius: 65,
+  unloadRadius: 75,
   updateInterval: 350,
 };