How do I add a "spread" to this laser script?
So, what I'm wondering is how I can make the end of the ray (goes to mouse position) offset randomly, so when the gun fires, the ray will have a "spread", similar to actual guns. I already know how to use math.random, but I do not know where, and how to add the offset to the end of the ray.
local ray = Ray.new(tool.Handle.CFrame.p, (mouse.Hit.p - tool.Handle.CFrame.p).unit * 2048)
local part, position = workspace:FindPartOnRay(ray, player.Character, false, true)
local beam = Instance.new("Part", workspace)
beam.BrickColor = player.TeamColor
beam.FormFactor = "Custom"
beam.Material = "Neon"
beam.Transparency = 0
beam.Anchored = true
beam.Locked = true
beam.CanCollide = false
local distance = (tool.Handle.CFrame.p - position).magnitude
beam.Size = Vector3.new(0.1, 0.1, distance)
beam.CFrame = CFrame.new(tool.Barrel.CFrame.p, position) * CFrame.new(0, 0, -distance / 2)
game:GetService("Debris"):AddItem(beam, 0.1)
1 answer
To get a random variation in the direction of the laser, you can multiply it by CFrame.Angles with random angles as the arguments. For example:
local Variation = 15 beam.CFrame = CFrame.new(tool.Barrel.CFrame.p, position) * CFrame.Angles(math.rad(math.random(-Variation,Variation)), math.rad(math.random(-Variation,Variation)), 0) * CFrame.new(0, 0, -distance/2)
this would rotate the beam up to 15 degrees on both the X and Y axes (you may have to swap the X with the Z if it rotates on the wrong axis). Basically, math.rad converts degrees to radians (which CFrame.Angles uses), and it's given a random number of degrees.
Hope this helps!
EDIT: to get more a more specific spread (like a hundredth of an increment), you can multiply by 100 before getting the random number and divide by 100 after. So, for example:
local Variation = 3 beam.CFrame = CFrame.new(tool.Barrel.CFrame.p, position) * CFrame.Angles(math.rad(math.random(-Variation*100,Variation*100)/100), math.rad(math.random(-Variation*100,Variation*100)/100), 0) * CFrame.new(0, 0, -distance/2)
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