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Re: Can I click on Terrain?

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DlSCORD is not online. DlSCORD
Joined: 28 Oct 2011
Total Posts: 555
26 Jul 2012 02:25 PM

If I use Mouse.Target and click on a piece of terrain, how can I tell what I clicked on?

Like if it's grass, sand, water, etc..

Can I do that?




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SpleenYanks is not online. SpleenYanks
Joined: 24 Aug 2008
Total Posts: 921
26 Jul 2012 02:26 PM
Last time I checked, it doesn't work.
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DlSCORD is not online. DlSCORD
Joined: 28 Oct 2011
Total Posts: 555
26 Jul 2012 02:30 PM
:/
Well, there goes half my game plan...




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Dr01d3k4 is not online. Dr01d3k4
Joined: 11 Oct 2007
Total Posts: 17916
26 Jul 2012 02:32 PM
You could use mouse.Hit.p to get the position of where the mouse is in 3d coordinates, then check if that's in the bounds of terrain, and then find which cell it's in. That's as much as I can help you with though as I don't know any of the methods for the terrain.
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DlSCORD is not online. DlSCORD
Joined: 28 Oct 2011
Total Posts: 555
26 Jul 2012 02:35 PM
>dr01d3k4,
Thanks, but the terrain I'm working with is around 500x500 and that's a bit too big for me to map out.

I'll just figure something else out.




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Dr01d3k4 is not online. Dr01d3k4
Joined: 11 Oct 2007
Total Posts: 17916
26 Jul 2012 02:38 PM
What do you mean, "map out"? Can't you just do something like:
local p = Mouse.Hit.p;
local x = p.x;
local y = p.y;
local z = p.z;

if ((x > -250) and (x < 250)) then
-- X is in bounds
end

Etc?
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DlSCORD is not online. DlSCORD
Joined: 28 Oct 2011
Total Posts: 555
26 Jul 2012 02:41 PM
>dr01d3k4,

I mean, then I'd have to map out where the sand is, where the water is and where the grass is.

Also since they are in odd shapes, There'd be hundreds of arrays I'd have to log.




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Darkmist101 is not online. Darkmist101
Joined: 30 Jul 2010
Total Posts: 6208
26 Jul 2012 02:42 PM
WorldToCell( Vector3 position )
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SpleenYanks is not online. SpleenYanks
Joined: 24 Aug 2008
Total Posts: 921
26 Jul 2012 02:42 PM
I'm fairly sure you can just use a simple loop to go through every single block in a gridm instead of manually doing it all.
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Dr01d3k4 is not online. Dr01d3k4
Joined: 11 Oct 2007
Total Posts: 17916
26 Jul 2012 02:42 PM
Isn't there a simple method likee Terrain:GetCellType(x, y, z) or something? (Just guessing)
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DlSCORD is not online. DlSCORD
Joined: 28 Oct 2011
Total Posts: 555
26 Jul 2012 02:44 PM
>Darkmist101,

Could you explain what that does?




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Dr01d3k4 is not online. Dr01d3k4
Joined: 11 Oct 2007
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26 Jul 2012 02:46 PM
Use WorldToCell and GetCell methods of the terrain.
http://wiki.roblox.com/index.php/RBX.lua.Terrain_%28Object%29
Read that page on the wiki for an explanation of the methods.
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DlSCORD is not online. DlSCORD
Joined: 28 Oct 2011
Total Posts: 555
26 Jul 2012 02:47 PM
>dr01d3k4,
Thanks, funny thing is, I was just reading about the GetCell method. I'll take a look at WorldToCell too,.






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DlSCORD is not online. DlSCORD
Joined: 28 Oct 2011
Total Posts: 555
26 Jul 2012 02:50 PM
One last thing.

If a player clicks on the terrain, will the Mouse.Target be the terrain?




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Dr01d3k4 is not online. Dr01d3k4
Joined: 11 Oct 2007
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26 Jul 2012 02:51 PM
That I have no idea about. You should test it yourself. print(Mouse.Target.Name) (or ClassName).

I can't test it myself as I uninstalled roblox.
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ElectricBlaze is not online. ElectricBlaze
Joined: 18 Jul 2011
Total Posts: 22930
26 Jul 2012 02:52 PM
WorldToCell converts world coordinates to coordinates specific to the terrain grid. As you know, you usually use world coordinates, but the terrain uses its own grid. WorldToCell converts it to that grid.
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DlSCORD is not online. DlSCORD
Joined: 28 Oct 2011
Total Posts: 555
26 Jul 2012 02:54 PM
>ElectricBlaze,

Thanks, but if the coordinate is on the surface of the terrain, which way does it round?




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ElectricBlaze is not online. ElectricBlaze
Joined: 18 Jul 2011
Total Posts: 22930
26 Jul 2012 02:55 PM
So you could do this:

local WorldPos = Vector3.new(50, 50, 50)
local material, type, orientation = workspace.Terrain:GetCell(workspace.Terrain:WorldToCell(WorldPos))
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ElectricBlaze is not online. ElectricBlaze
Joined: 18 Jul 2011
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26 Jul 2012 02:56 PM
Could you please rephrase that?
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Quenty is not online. Quenty
Joined: 03 Sep 2009
Total Posts: 9316
26 Jul 2012 03:00 PM
I'm pretty sure that mouse.Hit will return terrain if you clicked on it...
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DlSCORD is not online. DlSCORD
Joined: 28 Oct 2011
Total Posts: 555
26 Jul 2012 03:02 PM
>ElectricBlaze,
Thanks, but do you know the difference between material and type?




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DlSCORD is not online. DlSCORD
Joined: 28 Oct 2011
Total Posts: 555
26 Jul 2012 03:02 PM
>Quenty,
Thanks.




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ElectricBlaze is not online. ElectricBlaze
Joined: 18 Jul 2011
Total Posts: 22930
26 Jul 2012 03:04 PM
Type is the Shape of the cell. It can either be Solid, VerticalWedge, CornerWedge, InverseCornerWedge, or HorizontalWedge. Material is the material. I believe you know what that is.
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ElectricBlaze is not online. ElectricBlaze
Joined: 18 Jul 2011
Total Posts: 22930
26 Jul 2012 03:05 PM
@Quenty - No, mouse.Hit will return a CFrame holding the world coordinates of where the mouse is current pointing.
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DlSCORD is not online. DlSCORD
Joined: 28 Oct 2011
Total Posts: 555
26 Jul 2012 03:06 PM
>ElectricBlaze,
Thanks, I'll try that to get the material.




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