For a throwable item, should I use raycasting, or something else?

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#1

I’m throwing to make a throwable weapon, similar to Murder Mystery’s throwable knife. I’m not sure where to start.

What should I use? I’ve tried the mouse position thing, but it’s really buggy and often goes in the wrong direction.

I also don’t really know how raycasts work, if that is a better way to do it, so it’d help a lot if anyone could show me some tutorials.

Thanks!

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#2

You could make a Tween using Tween Service and then create a event to check if the part was touched.

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#3

So I would just make it tween forwards, from where the mouse is pointing?

Also, is that a good way to do it?

#4

I think it is a good way to do it.
You need to make a tween to the Mouse.Hit.Position

#5

Do you know why it isn’t working using BodyVelocity and such? It’s making the item go in the wrong direction occasionally.

#6

You could use the Part.AssemblyLinearVelocity property, example:
Part.AssemblyLinearVelocity = CFrame.lookAt(Part.Position, Mouse.Hit.Position) * 100
This is going to make the velocity of the part be 100 and make the part look at the Mouse.Hit.Position

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#7

I’ve run into a slight problem - I’m making the knife move on a server script, how would I get the player’s mouse then?

#8

You can create a Local Script and when the mouse button is pressed fire the server with a remote event (and you include the param Mouse.Hit.Position in the remove event)

#9

I’m getting this error:

Players.RipPBB_TUD.Backpack.ThrowingObject.ServerSide:27: invalid argument #2 (Vector3 expected, got number)

Line 27:

kclone.AssemblyLinearVelocity = CFrame.lookAt(kclone.Position, mouseHit) * 100

In the local script, I’m sending this:

script.Parent:WaitForChild("ThrowEvent"):FireServer(m.Hit.Position)

What changes should I make?

#10

Part.AssemblyLinearVelocity = CFrame.lookAt(Part.Position, Mouse.Hit.Position) * Vector3.new(100,0,0)
Try using this :arrow_up:

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#11

It’s giving me the error “Position is not a valid member of Vector3”

I’m not sure what I’m doing wrong here.

Error line:

kclone.AssemblyLinearVelocity = CFrame.lookAt(kclone.Position, mouseHit.Position) * Vector3.new(100,0,0)

LocalScript:

script.Parent:WaitForChild("ThrowEvent"):FireServer(m.Hit.Position)
#12

In the server script you don’t need to add .Position
The variable itself is the position

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#13

Seems like you’re already getting pretty far with DanilochRBX, but you could have looked up a question like this on Google.

I found a video on making a “throwable knife like mm2” in nearly 10 seconds:

#14

That’s the tutorial I used. I followed it, but the end result was a buggy knife that didn’t always follow the mouse.

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#15

The object just falls onto the floor, instead of where my mouse is.

#16

So I tried this code in my game, and It seems to work:

script.Parent.OnServerEvent:Connect(function(player,pos)
	workspace.Part.CFrame = CFrame.lookAt(workspace.Part.Position, pos)
	workspace.Part.AssemblyLinearVelocity = workspace.Part.CFrame.LookVector * 100
end)
#17

Here’s a video, if you need it:
https://gyazo.com/12f71bb50d7acf05c8a62b580fb9a674

I’m having multiple issues:
The mesh isn’t showing, and the knife doesn’t follow the player’s mouse.

Using your script, it’s giving me an error.

Players.RipPBB_TUD.Backpack.ThrowingObject.ServerSide:26: invalid argument #2 to 'lookAt' (Vector3 expected, got CFrame)

Line 26:

kclone.CFrame = CFrame.lookAt(kclone.Position, mouseHit)
#18

The mouseHit variable represents Mouse.Hit.Position right?

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#19

Whoops, forgot that. The knife is now dropping to the floor still.

https://gyazo.com/619e93d3688f179a723d0d72801dac04

#20

Is the knife anchored? It can’t be anchored to LinearVelocity work.