... Vector3[3 50] ;for (int i = 0; i < cloudPositions.Length; i++){Chapter 6[ 163 ] cloudPositions[i] = new Vector3( r.Next(- 600 0, 600 0), r.Next( 200 0, 300 0), r.Next(- 600 0, 600 0));}clouds ... indices[x++] = i + 0; indices[x++] = i + 0 + 4; indices[x++] = i + 3 + 4; indices[x++] = i + 2 + 4; indices[x++] = i + 2 + 4; indices[x++] = i + 1 + 4; indices[x++] = i + 0 + 4; }Down l o ... (int i = 0; i < nParticles * 4; i += 4) { particles[i + 0] = new ParticleVertex(z, new Vector2 (0, 0) , z, 0, -1); particles[i + 1] = new ParticleVertex(z, new Vector2 (0, 1), z, 0, -1);...