How would I go about finding if two objects have a part between them?

[7z99 (cody)]

Hello!

I’m currently creating an interaction handler which uses .Magnitude to determine if a player’s character is within a certain radius of an interact-able object. The problem is that the interaction prompt appears even when there is an object in between the player and the object. I assume I would have to use raycasting for this, however I have zero experience with creating my own rays, the most experience I have is mouse.Hit.

Another thing is that this tarp is a mesh so I don’t believe I could use :GetTouchingParts() as it doesn’t seem efficient, and I don’t believe it could check as accurately as raycasting would.

What calculates the distance between the character and the object (works fine).

runService.RenderStepped:Connect(function()
    local closestDistance = math.huge
    local closestObject = nil
    for i,interactionObject in pairs(interactableObjects) do
        if interactionObject:IsA('Model') then
            interactionObject = interactionObject.PrimaryPart
        end
        if (humanoidRootPart.Position - interactionObject.Position).Magnitude < minimumInteractionDistance then
            if (humanoidRootPart.Position - interactionObject.Position).Magnitude < closestDistance then
                closestDistance = (humanoidRootPart.Position - interactionObject.Position).Magnitude
                closestObject = interactionObject
            end
        end
    end
    if not closestObject then
        template.Parent = nil
        template.Adornee = nil
    elseif closestObject ~= openInteraction then
        promptInteraction(closestObject)
    end
end)

Here’s the market stall:

(Extremely) rough idea of where the player should be able to interact with the object.

[hestolemyrice]

Uh why don’t u just put a transparent part in the area u want them to be at to interact

inside the transparent part just add a script and write this

 script.Parent.Touch:Connect(function()

--blah blah blah
end)

[7z99 (cody)]

.Touched and (especially) .TouchEnded aren’t very accurate so the user would end up with the interact stuck on their screen or it wouldn’t appear at all. Plus I have an entire system created and I don’t really want to create a new one using this method unfortunately. I’m only really looking to refine the current system.

I also went about creating a system like this awhile ago and it all in all didn’t work very well, especially with multiple interact popups.

[tobias6262]

If I understand this correctly you want to only show something when the player is at a given angle right? Assuming this is the case you can use the dot product of 2 vectors and get the given angle between 2 parts with this function

local function GetAngleBetween(part1, part2)
    return math.acos(part.CFrame.LookVector:Dot((part1.Position - part2.Position).Unit))
end

[7z99 (cody)]

Nah, I mean if there’s an obstruction between the player and the interactable object, the interact prompt shouldn’t appear.

Made this diagram, excuse my crappy trackpad drawing skills lol.

[angrybino]

You can use ray casting for this. Cast a ray from the NPC’s humanoid root part inside the market stall and check if something hits the ray, if it does, there is a part between the market stall.

Demonstration:

local MAX_DISTANCE = 35 
local ray = workspace:RayCast(npc.HumanoidRootPart.Position, npc.HumanoidRootPart.CFrame.LookVector * MAX_DISTANCE)

-- If ray is not nil, there is a part in between
if (ray ~= nil) then

end

[legs_v (legs)]

You could use Proximity Prompt to let the player hold down a key to enter the shop instead of doing it by touch