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Question by HugoCortell_VFS · Aug 09, 2020 at 06:46 PM · physicsrigidbodymath

Bounce rigidbody backwards without knowing its rotation

             col.GetComponent<PlayerRigidbodyRedirector>()._Rigidbody.AddExplosionForce(_ParentScript._PushBack, transform.InverseTransformPoint(col.transform.position), Mathf.Infinity, 1f, ForceMode.Impulse);
 

I have tried everything I could think of, I have a cube with a trigger that acts as a "killer laser" thing and I want it to shoot back the player when he touches it.

There's only one issue though, I don't have access to the player's rotation (it's always 0,0,0), this means I need to somehow find a way to position the explosion spawn point in front of the player without knowing where forward is.
Does anyone know how I can do that? It always only works in one direction...

I want to add that if I make it just transform.position, the origin of the laser. wHEN the player touches anything but the centre point, he will be shot at an angle.
Of course, I could tell it to use a vector 3 with all being the transform position and then the x axis be the player's own x axis, but then what happens when I rotate it and the X axis becomes the Z axis?

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Answer by HugoCortell_VFS · Aug 09, 2020 at 07:31 PM

I found out how to do it but please if you know a more elegant way, let me know!

 // CHECK ANGLE AND EXECUTE PUSHBACK BASED ON RESULTS.
             if (_ParentScript.gameObject.transform.eulerAngles.y == 0)
             {col.GetComponent<PlayerRigidbodyRedirector>()._Rigidbody.AddExplosionForce(_ParentScript._PushBack, new Vector3(transform.position.x, transform.position.y, col.transform.position.z), Mathf.Infinity, 1f, ForceMode.Impulse);}
             if (_ParentScript.gameObject.transform.eulerAngles.y == 90)
             {col.GetComponent<PlayerRigidbodyRedirector>()._Rigidbody.AddExplosionForce(_ParentScript._PushBack, new Vector3(col.transform.position.x, transform.position.y, transform.position.z), Mathf.Infinity, 1f, ForceMode.Impulse);}
             if (_ParentScript.gameObject.transform.eulerAngles.z == 90) // NOW ITS UP-N-DOWN
             {col.GetComponent<PlayerRigidbodyRedirector>()._Rigidbody.AddExplosionForce(_ParentScript._PushBack, new Vector3(transform.position.x, col.transform.position.y, transform.position.z), Mathf.Infinity, 1f, ForceMode.Impulse);}

This code makes me doubt myself.

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