FastCast Offset problem

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#1

There is a slight issue with the bullet offset; to explain whenever i look at different coordinates the offset will change, the offset is exaggerated to further illustrate the issue.

I have made the offset so that it would fire to the left but changing camera angles seems to displace it

local Angle = Vector3.new(1,0,0)                     -- exaggerate bullet offet
local Pos = charWeapon.Shoot.Position          -- weapon shootpart
local direction = (mouseHit - Pos).Unit + Angle
CasterModule.CreateCast(Pos,direction ,700,mouseHit)
#2

You must use CFrames in order to create an offset like that. Simply * on the Offset CFrame, Also move the post to Scripting support.

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#4

What happens when you remove the angle?

#5

there will be no offset and the ray will just fire straight

#6

You aren’t exactly adding to the origin, you are adding to the direction I believe. Try adding to Pos.

#7

adding it to the pos will just deviate it from the shoot position;

#8

This is because you are adding it in object space when it should be in world space.

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#9

I believe that could be the right awnser but the way i set up my recoil is with a large table with random vector3’s. So while the ShootPart will be in world position the Recoil pattern will be in Object space

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#10

I wouldn’t recommend that for recoil. There’s a Random function dedicated for producing random unit vectors, I recommend you look into that.

#11

Yes i can use Math.RandomSeed which is ultimately the same thing
Im using seeded Recoil which is independent from server - Client which is what most E-Sports Fps use instead of generating random offsets in the spot.

#12

This was ultimately the solution i had to use CFrame.fromOrientation and it worked just fine
thanks you guys for helping

		local Pos =  self.Weapon.Shoot.Position  
		local directionUnit = (self.mouseHit - Pos).Unit 
		local directionCF = CFrame.new(Vector3.new(0,0,0), directionUnit)
		
		local spreadAngle = CFrame.fromOrientation(math.rad(10), 0, 0)
		local direction = (directionCF * spreadAngle).LookVector
#13

Hey unrelated question, but how did you get rid of the offset that fastcast has when the velocity is high?

#14

You simply have to wait a frame before moving the bullet.

#15

can you tell me how and where? I tried putting it somewhere in the fastcast module but no luck

#16

I’m not sure where it is in FastCast. I’ve only applied this method to my own systems, so I’d recommend you create a separate topic for it so people who do know can answer the question.