How do I identify between ground terrain and water terrain?

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#1

Hi, so I would like to differentiate between ground terrain and water terrain for my boat placing system but I don’t know how I would do this since both of them are called “Terrain” under mouse.Target.Name. How would I be able to identify water type of terrain in other words. Thanks a lot!

#2

You could probably use Raycasting for this on the Boat, and implementing RaycastParams() which has a property called “IgnoreWater” & it can be set to true or false

This is probably the only way checking if the Terrain is Ground or Water

#3

The only way to check terrain type is using RayCast

#4

Are you guys sure? All the properties for water and ground terrain are the exact same? Thanks

#5

yes.

local raycastresult = workspace:RayCast(blablabla)

if raycastresult then
   print(raycastresult.Material)
end
--> will print the material hit or nil
#6
#7

Okay, i’ve never used raycasting before (well I did once but I forgot), is there an easy way to get the material of terrain from where the mouse is pointing? If it’s not hard enough code, please give me it or I will accept advice. Thanks.

#8

No I don’t believe the mouse will return the material type, RayCasting is the only way.

Here’s how you raycast

#9

Okay so I used raycasting but it says that the target’s “Material” property is plastic for both ground terrain and water. Did I do anything wrong? Why is it giving me plastic as material? Thanks again

#10

Yes you did something wrong because I tried it and it works, if you cast a ray towards terrain it will return the terrain material as RayCastResult.Material

#11

Sorry to bother you but could I have the code? For me it keeps saying the material is 256 (plastic I guess) and this is my code for MouseRay:

local mouseRay = cam:ViewportPointToRay(mousePos.X, mousePos.Y)

mouseRay = Ray.new(mouseRay.Origin, mouseRay.Direction * 50)

Is 50 too low or something? What am I doing wrong? Thanks

#12

Okay I just realized I sent you a video that uses the deprecated Ray.new

Instead there is the new and improved Raycast there is a demonstration on the API page but basically it looks like this

local params = RaycastParams.new()
params.FilterType = Enum.RaycastFilterType.Blacklist
params.FilterDescendantsInstances = {workspace.stuff_not_to_hit}
params.IgnoreWater = false

loal RaycastResult = workspace:Raycast(Mouse.UnitRay.Origin, Mouse.UnitRay.Direction * 1000, params)

if RaycastResult then
   local hit = RaycastResult.Instance
   local position = RaycastResult.Position
   local normal = RaycastResult.Normal
   local Material = RaycastResult.Material --> this will return the terrain material
end

all this is on the API page

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#13

Thank you for giving me the whole code and solving this mess for me. Hopefully as I see this as an important subject on scripting, other people will now know what to do because of you and the others that tried to help. Thanks so much you saved me!

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