Help with a raycasting issue

Help and Feedback Scripting Support
1

Hello!! So I am using raycasting for a projectile, but it doesn’t end if a player walks into it and it ends too early if a player walks out (it’s made for rays so what did I expect). I was wondering if anyone had any way to achieve this or any alternatives to raycasting. Here’s a sample of my script:

local origin = myCharacter["Right Arm"].Position
			local direction = (mousePosition - origin).Unit * 200

			local raycastParams = RaycastParams.new()
			raycastParams.FilterDescendantsInstances = {
				workspace.TestPart,
				ProjectileClone,
				myCharacter
			}
			raycastParams.FilterType = Enum.RaycastFilterType.Exclude
			raycastParams.IgnoreWater = true

			local raycastResult = workspace:Raycast(origin, direction, raycastParams)
			local hitPos = raycastResult and raycastResult.Position or (origin + direction)

			local distance = (hitPos - origin).Magnitude
			local speed = 100
			local duration = distance / speed

			local tween = game:GetService("TweenService"):Create(
				ProjectileClone, 
				TweenInfo.new(duration, Enum.EasingStyle.Linear, Enum.EasingDirection.Out),
				{Position = hitPos}
			)
			tween:Play()

As always, I appreciate any and all help from you guys. Thanks!

2

Other than mentioning the resource Fastcast

Do not tween, and every heartbeat frame raycast and update the visual projectile using the position += velocity * deltaTime formula.

3

how would I successfully implement this while still keeping the max range at 200 studs?

4

sooooo velocity by definition is distance / time.
doing: velocity * deltaTime is like:

(distance / time) * time which gives you just distance.
So you keep adding that value to some variable and check if it’s >= to 200.

If you want it to be a HARD LIMIT (i.e. do not go above 200 at any costs) then you can clamp the distance.

5

Can you please give me an example? Sorry, I’m not very good at understanding. :sob:

6

let’s say you want to tween in a specific direction.

local direction: Vector3 = someVector
local speed = 50
local MAX_DISTANCE = 200
local totalDistanceTravelled = 0

RunService.Heartbeat:Connect(function(deltaTime)
    -- insert tween stuff + raycast stuff here
    local distanceTravelled = deltaTime * speed
    if distanceTravelled + totalDistanceTravelled > 200 then
         distanceTravelled = 200 - totalDistanceTravelled
    end
    totalDistanceTravelled += distanceTravelled
    -- blah blah blah
end)

You can multiply direction by totalDistanceTravelled to get a position you want to tween to.