使用方法：控制台分别输入touch_addbutton "skymenu" "touch_default/sky_menu.tga" "exec touch/skybox" 0.470000 0.648417 0.530000 0.773917 255 255 255 255 0和touch_addbutton "crossmenu" "touch_default/cross_menu.tga" "exec touch/crosshair" 0.470000 0.648417 0.530000 0.773917 255 255 255 255 0
