UE4 controls the rotation of objects by pressing keys

Realization effect ：

 

Implementation steps ：

1. In the content browser , Right click the blueprint class , Create a file called The object rotates _BP The blueprint of  , Double-click to open

2. Add the component -》 Cube

 3. take Cube Drag in

 4. Add local rotation , Set up z The value of is 2

 5. increase event Tick  （ It means that every frame is executed Local rotation ）

  At this time, the square can turn by itself

The next step is to be able to control the rotation of the square

6. Create a branch

 7. Create a variable , Name it Can I rotate , Set the type of variable to Boolean

 8. Hold down ctrl Drag the newly created variable into the event diagram （ Express get This variable ）, And click the compile

 9. establish Custom events , To control when the Boolean value is True or False

10 establish flip flop , It means to press once A, Press again to go B, In this cycle

 

 11. Drag variables into the event diagram , choice Set up Can I rotate ,

 12. A copy of , Here's the picture ：

 13. Can be flip flop Change to branch to judge whether the current Boolean value is right or wrong

 14. Back to the third person blueprint , The new event chart is named control box rotation

 15. establish keyboard 1; Create a variable named rotation object reference , Set the variable type to The object rotates _BP-> Object reference , In this way, the rotation of the object can be quoted _BP Variables in this blueprint

 16. establish isValid

 17. Pull the connecting line from the reference of the rotating object , Choose to create Control the rotation , Reconnect

 18. Click the small eye marked , Click again compile

 19. Click the labeled straw icon , Then click... On the viewport interface The object rotates _BP （ It's the white square next to the villain ）

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