cl_crosshairsize 5 准心的长短
cl_crosshairgap 1 准心的间隙
cl_crosshairdrawoutline 1 准心外一圈黑线 1为开 0为关
cl_crosshairoutlinethickness 1 准心外黑线的粗细 每0.5一档 (当上面参数为1时显示)
