LI WEI thinks this is interesting: Add Radial Force From Forces and energy from Unreal Engine Physics Essentials by Devin Sherry, Katax Emperore Publisher: Packt Publishing Released: September 2015 Note 以一个点做爆炸力，推动周围的Actor Share this highlight http://www.safaribooksonline.com/a/unreal-engine-physics/12641178/ Twitter Facebook Google Plus Email Get Instant Access Now Start a Free Trial Have an account? Sign in. Minimise Unlock the rest of Unreal Engine Physics Essentials and 30,000 other books and videos By clicking this box, you confirm that you have read and agree to the terms and conditions of our Membership Agreement, and you understand that when your trial period ends, you will be required to provide billing information if you wish to continue using the service. Unlock the rest of this book Start a Free 10-Day Trial loading Learn about Safari for Business Have an account? Sign in.