UE4 keyboard control switch light

effect ：

UE4 Turn on and off the lights

step ：

1. Create a new blueprint class , Name it Light_BP,

 2. Add a static mesh body component

3. choice SM_Lamp_Wall Model

 4. Add a spotlight component

5. Adjust the light source illumination angle

 6. Add a trigger box and resize it

 7. Add start overlap and end overlap

8. As shown in the figure below, create a new node and connect

 9. Turn off the visibility of the light source （ Let the light be off at first ）

 10. Add text rendering component

 11. Cancel visibility （ Only touching the trigger box displays ）

 12. Set the visibility of the text

 13. Add a boolean variable Whether the light has been turned on

14. When the light is on , Make the variable True

 15. Get the value of the variable , If it is False You can turn on the light

  The effect is as follows ：

  How to rotate the mechanism door when all the lights in the scene are turned on ？

16. Create the following nodes

 17. Create a level blueprint

 18. Create custom events

19. stay Light_BP Input in ce Open and close the door

 20. Select the mechanism door in the viewport interface , Create a reference to the mechanism door in the level blueprint

 21. Create the following nodes

22. Set the key frame of the timeline

  In this way, you can see the effect of the beginning of the article .