Check Collision after camera position changed

Questions
1

hey
i change the camera position

  1. have i any event for know about collision camera with other object ?
  2. how can correct the movement like automatic camera movement when i manually change camera position by code?
2

One idea:

If you parent an object to the camera…like a cube as an example, then you can use collision with the cube. So the cube would move when the camera moves and you can use that for collision detection.

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3

hey thanks that is good idea but let me show you what is the main problem in PG

4

https://www.babylonjs-playground.com/#U8MEB0#158

i need camera move same as when we walk move with keys [up- left -down back]

5

Forgive me as I’m having a difficult time understanding exactly what you’re trying to do. It sounds to me like you’re interested in getting standard FPS-like controls for your camera?

You’re actually already using the free camera which has these built in for you…so in the playground you posted, I can use the arrow keys to move the camera around as you describe.

Again please forgive me if I’m misunderstanding.

6

dear @PirateJC it is for my bad english too :slight_smile:

7

i really need know about that
the main question is where i can update camera (by check collision) after transform manually?

9

Have you tried camera.onAfterCheckInputsObservable?

Also, you have onViewMatrixChangedObservable and onProjectionMatrixChangedObservable.

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10

i will read about them thanks i let you know if i cant get

12

hi again
i think i explain that wrong
look this example https://www.babylonjs-playground.com/#U8MEB0#158
i want when camera moved automatically (not buy input) and hit the box that not go inside the box

13

Hi,

I probably misunderstand what you’re looking for because the @PirateJC’s solution looks good to me. Here is a basic example with a box attached to the camera and used to check for collision when the camera move automatically:

https://www.babylonjs-playground.com/#U8MEB0#159

please excuse me if my answer is out of scope :grimacing:

14

hi thanks
i dont wanna stop when camera hit the box i wanna that movement path corrected after camera hit any mesh

15

Hi, thank you for the precision.
You can probably take a look at the navigation mesh extension:
https://doc.babylonjs.com/extensions/navigationmesh

As a quick example, I’ve just reuse an existing PG ( founded here Babylon.js Documentation) and add your camPlay() function:
https://www.babylonjs-playground.com/#RNCYVM#123

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