renamed light_adj to light_factor, more code cleanup
renamed light_adj to light_factor, more code cleanup

seanisom/vtp,nakijun/vtp,seanisom/vtp,markraz/vtp,nakijun/vtp,markraz/vtp,nakijun/vtp,nakijun/vtp,seanisom/vtp,seanisom/vtp,markraz/vtp,markraz/vtp,markraz/vtp,seanisom/vtp,nakijun/vtp