Add Environmental Effects to Player Models and Equipment

Environmental conditions should visibly affect the appearance of player models, clothing, equipment, and weapons. For example, players could become covered in mud after moving or going crouched in wet areas, appear soaked during rain, or accumulate dust and dirt in dry environments. Other effects, such as snow, ash, blood, or debris, could also appear when appropriate. These effects could gradually build up during a match and fade or wash away over time, making characters feel more connected to their environment.