Easier Way To Detect A Player Behind A Wall?

Help and Feedback Scripting Support
#1

Hello,
I am making a isometric fallout type game, and I have this camera view that sometimes makes it hard to see the player behind a wall. So, to combat this, I made a script that detects when a player touches a certain part, the wall goes half invisible. I then realized this is hard on my builders, and was wondering if there was an easier way around this? I know someone suggested firing a raycast and making it invisible, but I don’t understand what they mean/how to do it. Here is a video showing the problem. If anyone needs the script I have in the part, here you go:

local part = script.Parent
local wall = game:GetService("Workspace").Roof
local wall2 = workspace.wall
local wall3 = workspace.wall3
local wall4 = workspace.wall2
part.Touched:Connect(function()
	wall.Transparency = 0.6 
	wall2.Transparency = 0.6
	wall3.Transparency = 0.6
	wall4.Transparency = 0.6
	repeat wait(0.1)
		local PlayerTouching = false

		for i, TouchingPart in pairs(part:GetTouchingParts()) do
			if TouchingPart.Parent:FindFirstChild("Humanoid") then
				PlayerTouching = true
				break
			end
		end
	until PlayerTouching == false 
    wall2.Transparency = 0
	wall.Transparency = 0
	wall3.Transparency = 0
	wall4.Transparency = 0
end)

Any help would be greatly appreciated.

2 Likes
#2

make billboard inside player and make always on top

#3

https://developer.roblox.com/en-us/api-reference/class/BillboardGui

#4

Yes, but that wouldn’t really help all too much as the buildings will have interiors and they wouldn’t be able to see the interior.

#5

Forgot to post the video, here it is

1 Like
#6
#7

oh i get you now you can castray from camera lookvector and when it hit something it do the thing

#8

You can just make a viewport frame and make them highlighted on client

#9

I see, but I don’t know how to do raycasts even after reading the api. It’s really confusing. I also don’t know how to get the camera look vector

1 Like
#10

Or you can grab all the character models and make a table and then cast ray like Ray.new(cam.CFrame.p,(v.HumanoidRootPart.CFrame.p - cam.CFrame.p).Unit*(v.HumanoidRootPart.CFrame.p - cam.CFrame.p).Magnitude) and get the v from the char table. make sure to have the it as whitelistfilter and have the filter table as the characters in the table

#11

Uhh…What? I really don’t have any idea what you just said, I don’t understand raycasts or anything after reading the documentation.

#12

Is this camera the one related to the client?

#13

What do you mean? I am confused.

#14

You’re going to have to either use spatial query or raycasting.

Spatial Query Method (not recommended) :
Create a Hitbox around the player’s PrimaryPart, expand it by 50, and detect parts inside that area.

Raycast Method (recommended) :

Raycast from the X, -X, Y, -Y, Z, and -Z axises every 0.15 seconds to detect colliding parts. Do this while filtering the box (put the box in a model/folder) and cast from the PrimaryPart. Once you pick up all your parts, change their transparency.

Intro to Raycasting (roblox.com)

If you don’t understand Raycasting it’s going to be a lot harder for you even if I spoonfeed you the code directly.

2 Likes
#15

Like camera as in 3D model of a camera or camera in roblox that you use to see around.

#16

Well, the games camera is just the normal roblox camera if thats what you’re asking. I don’t really know what you’re asking.

1 Like
#17

I need to know so i can come up with a example for you, i think you mean the workspace.CurrentCamera only accessible from client.

#18

That sucks, because i’ve been trying to figure out raycasts for some time and it’s really hard. I don’t know what to do even after reading the api.

#19

I still don’t understand what you’re asking me.

#20 
-- only works for LocalScript's 

local fetch = {} --the character table
local plr = game.Players.LocalPlayer;

updateFetch = function() 
table.clear(fetch)
for i,v in pairs(game:GetService("Players"):GetPlayers()) do 
if v~=plr then
table.insert(fetch,v.Character)
end
end
end
--
task.spawn(function()
while task.wait() do 
updateFetch()
table.foreach(fetch,function(i,v)
if v:FindFirstChild("HumanoidRootPart") then
local Ray_ = Ray.new(workspace.CurrentCamera.CFrame.p,(v.HumanoidRootPart.CFrame.p - workspace.CurrentCamera.CFrame.p).Unit * (v.HumanoidRootPart.CFrame.p - workspace.CurrentCamera.CFrame.p).Magnitude)
local Hit,Pos,Normal = workspace:FindPartOnRayWithWhitelist(Ray_,fetch)
if Hit then
warn("Found player!")
end
end
end)
end
end)