UE4 writes the blueprint in the actor class to realize reuse

In the last blog post （UE4 The level blueprint realizes opening and closing ） It's done Open and close the door , But if there are multiple such doors in the game , This operation is very troublesome , So this blog realizes the reuse of door opening and closing logic

Final effect ：

step ：

1. Right click the content browser , Select blueprint class

2. Click on Actor

3. Name it Door_BP, Double click to open the blueprint class

 4. Click on Add the component -》  Static mesh body components

5. Name it DoorFrame （ Doorframe ）

6. Here's the picture , In turn, click , To add door frames  7. Repeat step 4~6, Add the door again

 8. add to Box Colision , And it Door Put it in the same directory

9. adjustment Box The size and location of

10. Here's the picture , In turn, click , Create an event when components begin to overlap

 11. Here's the picture , In turn, click , Create the event when the component ends overlapping

 12. Right click , Search for time axis , To add a timeline

 13. Double click to open the timeline

 14. Click on Add floating point tracks Button

 15. Right click Add keys to ..

 16. Add another keyframe , Set the time of the first key frame to 0, Value to 0

（ remind ： The value of the first frame should be the same as the initial z The rotation degree of the shaft is consistent , Here's the picture ）

 17. Set the time of the second key frame to 2, Value to 90  （2 second rotate 90 degree ）

18. Change the length to 2

19. Select the first key , Right click , Choose Auto , To smooth the line

 20. take Door Drag directly to the event chart , for Door Add a reference  

 23. Here's the picture , Set relative rotation

 24. Here's the picture , attachment

24. Right click Delta Rotation, choice Split structure pins

25. Here's the picture , Reconnect

 26. Click on compile

After completion , You can drag the edited blueprint into the viewport interface to use , The effect is as shown at the beginning

If you want to achieve E Key to open and close the door , You can continue to refer to this blog ：UE4 Keyboard keys realize door opening and closing