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Top Down Strafe to Mouse Location

Hello All

I'm brand new to UE4, and reading up on tutorials and the likes to help myself learn the blueprint system.

What I am trying to achieve is a top down WASD movement system, but with the mouse used as an aiming point.

So far I've got the rotation sorted out, it points to where the mouse is, and W & S goes forward and back to where the mouse is pointing on the screen.

The problem I'm having now is with strafing.

I can get it to strafe on the Y axis with no problem... but say if the character is moving forward on the Y axis, and I press "A" to strafe left... he will just continue going in that direction.

So ultimately I need help with strafing, so that the character will move side to side based on where the location of the mouse is on the screen.

Here is what I have so far (sorry for the mess, really I'm new to this). alt text

Appreciate the help!

Product Version: UE 4.10
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asked Mar 06 '16 at 08:56 AM in Blueprint Scripting

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2 answers: sort voted first

If you have a valid forward vector then getting the right/strafe vector is pretty simple. Try just using a "Rotate Vector" node based on your forward vector.

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answered Mar 07 '16 at 05:15 PM

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avatar image Flappers Apr 03 '16 at 02:30 PM

I know it's been a while since this was written, but wanted to say thanks, as this pretty much did the trick!

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You have to set a proper value for "World Direction" on the RightMovement. This gonna be the vector you are using for the forward input, just rotated 90 degrees to the right.

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answered Mar 06 '16 at 07:05 PM

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Ryan Darcey
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avatar image Flappers Mar 06 '16 at 07:18 PM

Thank you for the answer. Do you have an example in blueprint that I can refer to?


avatar image Ryan Darcey Mar 06 '16 at 07:20 PM
avatar image Flappers Mar 06 '16 at 08:41 PM

Thanks, I got a bit further, but just can't seem to get the angles right.

I tried placing the current mouse location as the vector, and added +90 on Y in axis, but it was a bit strange. Tried also feeding off the forward movement into the vector on this node, and adjusted the Y axis, but it just keeps going forwards and backwards, instead of side to side.

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