Scripting Helpers is winding down operations and is now read-only. More info→

How would i make a placement grid?

Asked by

LinKiNSpitZ 22

5 years ago

Edited 5 years ago

I'm making a build tool that creates parts wherever you click in the world. Thes script makes the parts do not pass trough each other, but, sometimes,if you put a part between two parts that are so together the part will pass through the other parts and i'd like to know how to make a placement grid to make the parts line up.

Here's a picture to help you understand my problem.

https://ibb.co/jb6KaU

Here's the scripts.

-- Local script in the tool 

local Event = game:GetService("ReplicatedStorage"):WaitForChild("PartsFromTool")
local equipped = false

script.Parent.Equipped:Connect(function(mouse)

    equipped = true

    game:GetService("UserInputService").InputBegan:Connect(function(input, g)

        if (equipped == true) then

            if (input.UserInputType == Enum.UserInputType.MouseButton1) then

                local position = mouse.Hit

                Event:FireServer(position)

            end

        end

    end)

end)

script.Parent.Unequipped:Connect(function()

    equipped = false

end)    

-- Server Script in ServerScriptService

game:GetService("ReplicatedStorage"):WaitForChild("PartsFromTool").OnServerEvent:Connect(function(player, position)

    local PCreated = Instance.new("Part")
    PCreated.Parent = game.Workspace
    PCreated.Size = Vector3.new(3, 3, 3)
    PCreated.Material = "Brick"
    PCreated.BrickColor = BrickColor.new("Persimmon")
    PCreated.CFrame = CFrame.new(position.Position) * CFrame.Angles(0, 0, 0)
    wait(0.001)
    PCreated.Anchored = true
    PCreated.CFrame = CFrame.new(PCreated.Position) * CFrame.Angles(0, 0, 0)

end)

So you want to snap the parts to a grid so you can't place a part inside another part? Also the link just brings me to a blank page. zblox164 531 — 5y

Yes, i want that, and here's another link: https://image.ibb.co/mJ8XvU/Captura.png LinKiNSpitZ 22 — 5y

I have found something that really helped me, make sure to check this! "https://web.roblox.com/games/1095570774/Placement-System-Example" AIphanium 124 — 5y

Answered! zblox164 531 — 5y

1 answer

Answered by

zblox164 531

5 years ago

To snap to a grid you need to do a bit of math. First you divide the mouse position by your grid then add 0.5 next round down or up and finally multiply by your grid. This will center the model on a grid of your choice. For rounding I will use math.floor() this rounds down no matter the value unless it is already an int (whole number).

Here is the code for snapping to a grid:

local player = game.Players.LocalPlayer
local mouse = player:GetMouse()

local Part = Instance.new("Part")
Part.Anchored = true
Part.Parent = workspace

local PosX, PosY, PosZ
local Grid = 2 -- Change this to your grid size

local function Snap()
    PosX = math.floor(mouse.Hit.X / Grid + 0.5) * Grid -- Snaps
    PosY = 1 -- Change this to your Y 
    PosZ = math.floor(mouse.Hit.Z / Grid + 0.5) * Grid -- Snaps
end

local function Move()
    mouse.TargetFilter = Part -- Ignores the part

    Snap()

    Part.Position = Vector3.new(PosX, PosY, PosZ) -- Sets the position
end

Mouse.Move:Connect(Move)

Now I used Vector3.new() but you will want to use CFrame's.

Hope this works!

The "Grid" is supposed to be the quantity of Studs? LinKiNSpitZ 22 — 5y

And i have to create the part from a Server script because of the Filtering Enabled. I'll do that change, i think it works nice. LinKiNSpitZ 22 — 5y

I made some changes and it worked perfect! Thanks for your help. LinKiNSpitZ 22 — 5y

Hey, i found a problem and i hope you can help me again. The problem is: I can place a part above other part. Is there any way to fix it? I tried doing Y = math.floor(mouse.Hit.Y / grid + 0.5) * grid, but the part starts moving everywhere! LinKiNSpitZ 22 — 5y

View all comments (5 more)

I can't* LinKiNSpitZ 22 — 5y

Don't do the Y position on a grid zblox164 531 — 5y

But if i do that: Y = 1 or Y = 2, i will just can place blocks in that Y position, and not place blocks above or below another blocks. LinKiNSpitZ 22 — 5y

And is there any difference if i use math.ceil() instead f math.floor()? LinKiNSpitZ 22 — 5y

math.ceil() rounds up and math.floor() rounds down zblox164 531 — 5y

How would i make a placement grid?

1 answer

Answer this question