feat: randomize grass height

src/app/niko/scene-components/grass.tsx

@@ -191,6 +191,15 @@ export default function Grass({
 
 			meshRef.current.setColorAt(instanceIndex, color);
 
+			const macroHeightBonus = (noiseVal + 1.0) * 0.2;
+			const grassWidth = grassSize * (0.8 + Math.random() * 0.4);
+			const grassHeight = grassSize * (0.6 + Math.random() * 1.2 + macroHeightBonus);
+
+			dummy.scale.set(grassWidth, grassHeight, grassWidth);
+
+			dummy.updateMatrix();
+			meshRef.current.setMatrixAt(instanceIndex, dummy.matrix);
+
 			instanceIndex++;
 		}
 		meshRef.current.count = instanceIndex;