Mat-e-maticas - Roblox Forum Archive

Join Date: 2008-12-31
Post Count: 295

#170666485Monday, August 10, 2015 7:45 PM GMT

Don't suppose anyone knows of a way to make a gun move up and down with the cursor in first person mode?

Join Date: 2012-08-13
Post Count: 3201

#170666565Monday, August 10, 2015 7:46 PM GMT

Some people to know how to, yes.

Join Date: 2008-12-31
Post Count: 295

#170666794Monday, August 10, 2015 7:48 PM GMT

I know some people do, that's why I'm asking.

Join Date: 2012-08-13
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#170667160Monday, August 10, 2015 7:51 PM GMT

You asked if people knew a way. I answered that.

Join Date: 2008-12-31
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#170667385Monday, August 10, 2015 7:53 PM GMT

Perhaps if you used common sense you'd realise I wanted an answer to my question, not you telling me that there is someone in our corporeal plane that has the knowledge.

Join Date: 2015-07-02
Post Count: 230

#170667698Monday, August 10, 2015 7:56 PM GMT

Step 1: Get player's mouse Step 2: Get height of screen (obtainable through camera.ViewportSize.h) Step 3: Get y position of mouse in a move event Step 4: Use the following formula to get the degrees in radians that you should rotate the tool on the desired axis: radians = math.rad( 45 ) * ( ( -( camera.ViewportSize.Y / 2 - y ) )/ camera.Viewport.Size.Y )

Join Date: 2015-07-02
Post Count: 230

#170667811Monday, August 10, 2015 7:57 PM GMT

Oops, divide by camera.Viewport.Y/2 not camera.Viewport.Size.Y

Join Date: 2014-06-26
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#170667915Monday, August 10, 2015 7:58 PM GMT

For first person, you'll be doing everything with the camera's lookvector relative to the x-z plane.

Join Date: 2015-07-02
Post Count: 230

#170667916Monday, August 10, 2015 7:58 PM GMT

Also, by camera.Viewport.H I meant camera.Viewport.Y

Join Date: 2008-12-31
Post Count: 295

#170668062Monday, August 10, 2015 7:59 PM GMT

Thanks pear.

Join Date: 2015-07-02
Post Count: 230

#170668084Monday, August 10, 2015 7:59 PM GMT

Also my formula only works for when you're not in first person, I'll leave it up to you to convert it.

Join Date: 2015-07-02
Post Count: 230

#170669069Monday, August 10, 2015 8:08 PM GMT

Eh, I'll be nice: radians = math.rad( 45 ) * ( math.acos( mouse.Hit.lookVector:Dot( Vector3.new( 0, 1, 0 ) ) ) / math.pi - .5 )

Join Date: 2015-07-02
Post Count: 230

#170669202Monday, August 10, 2015 8:09 PM GMT

Correction: radians = math.rad( 45 ) * -( math.acos( mouse.Hit.lookVector:Dot( Vector3.new( 0, 1, 0 ) ) ) / math.pi - .5 )

Join Date: 2008-12-31
Post Count: 295

#170669514Monday, August 10, 2015 8:12 PM GMT

Pear, do you know how to get the Y from the mouse in first person?

Join Date: 2015-07-02
Post Count: 230

#170669643Monday, August 10, 2015 8:12 PM GMT

^ The mouse is locked in the center of the screen in first person. See the 2nd formula I posted.

Join Date: 2014-06-26
Post Count: 4443

#170669986Monday, August 10, 2015 8:15 PM GMT

@pear Why wouldn't you just use the camera's lookvector?

Join Date: 2015-07-02
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#170673250Monday, August 10, 2015 8:42 PM GMT

^ Because I don't want to have to type camera.CoordinateFrame.lookVector when I can type mouse.Hit.lookVector to do the same thing.