Associate sv_gravity with physics gravity
Associate sv_gravity with physics gravity

romdi/IOS,iosoccer/iosoccer-game,ziming/IOS,iosoccer/iosoccer-game,romdi/IOS,iosoccer/iosoccer-game,romdi/IOS,romdi/IOS,ziming/IOS,iosoccer/iosoccer-game,ziming/IOS,ziming/IOS