"Extension-Method MI Usage Example"

// ENTITIES
public class ArmourPowerupEntity : Entity, IModelledEntity {
    private const float DEFAULT_ARMOUR_SCALING = 1f;
 
    public ArmourPowerupEntity(Vector3 powerupPosition)
        : this(powerupPosition, DEFAULT_ARMOUR_SCALING) { }
 
    public ArmourPowerupEntity(Vector3 powerupPosition, float customScaling) {
        this.SetModel(ModelDatabase.ArmourModel);
        this.SetPosition(powerupPosition);
        this.SetScaling(customScaling);
    }
}
 
public class RocketProjectileEntity : Entity, IModelledEntity, IAudibleEntity {
    public RocketProjectileEntity(Vector3 firingPoint, Vector3 firingVelocity, bool isBigRocket) {
        this.SetModel(ModelDatabase.RocketModel);
        this.SetPosition(firingPoint);
        this.SetVelocity(firingVelocity);
        this.SetScaling(isBigRocket ? 2f : 1f);
        this.SetSound(SoundDatabase.RocketSound);
        this.SetSoundRadius(1000f);
    }
}
 
// ELSEWHERE ...
public void FireRocket(Vector3 playerPosition, Vector3 playerAimDirection, bool isHyperspeedRocket) {
    float rocketSpeed = isHyperspeedRocket ? 10f : 100f;
 
    RocketProjectileEntity rocketProjectile = new RocketProjectileEntity(playerPosition, playerAimDirection.WithLength(rocketSpeed), false);
 
    if (isHyperspeedRocket) {
        rocketProjectile.SetSound(SoundDatabase.HyperspeedRocketSound);
        rocketProjectile.SetSoundRadius(2000f);
    }
}