How do I use surface normals to make a 'bullet mark' where a ray ends?

Asked by

6 years ago

Edited 6 years ago

So I have a script that makes a mark on wherever the player clicks. However it is really glitchy and doesn't really work.

this is how it looks on the floor(where its supposed to be flat) https://gyazo.com/73c47bee3eb199b72c6568e29aa50c67

this is how it looks like on a wall(where it is supposed to be what the floor is like) https://gyazo.com/4928e30f320843d895cdf6ca46598051

Any ideas why this is happening? This is my script:

01game.ReplicatedStorage.stupefyy.OnServerEvent:Connect(function(player, name, a)
02 
03local animation = game.Players:FindFirstChild(name).Character.Humanoid:LoadAnimation(game.Workspace:FindFirstChild(name).Wand.Animation)
04        animation:Play()
05local characterr = game.Workspace:FindFirstChild(name)
06lol = Instance.new("Sound")
07lol.Parent =  game.Workspace:FindFirstChild(name).Wand.Tip
08lol.SoundId = "rbxassetid://2394767558"
09lol.MaxDistance = 100
10lol.EmitterSize = 100
11lol:Play()
12 
13wait(.3)
14 
15--local ray = Ray.new(game.Workspace:FindFirstChild(name).Wand.Tip.Position(a - game.Workspace:FindFirstChild(name).Wand.Tip.Position).Unit * 750)
16 
17local character = game.Workspace:FindFirstChild(name)
18local origin = character.Wand.Tip.Position
19 
20 
21local ray = Ray.new(origin, (a - origin).Unit * 750)
22local studsUporDown = 0.25
23local timeTillNext = 0.025
24local segmentLength = 2
25local damageAmount = 10
26local part = game.ReplicatedStorage.stup:Clone()
27part.Parent = workspace
28studsUporDown = studsUporDown * 100
29 
30local function entropy()
31    local x = math.random(-studsUporDown,studsUporDown) / 50
32    local y = math.random(-studsUporDown,studsUporDown) / 50
33    local z = math.random(-studsUporDown,studsUporDown) / 50
34  return Vector3.new(x, y, z)
35end
36spawn(function()
37    for i = 0, 750, segmentLength do
38        local Next = ray.Origin + i * ray.Direction.Unit + entropy()
39    local damageRay = Ray.new(part.Position, (Next - part.Position).Unit * segmentLength)
40part.CFrame = CFrame.new(Next)
41    local hit, End = workspace:FindPartOnRay(damageRay, character, false, true)
42if hit and hit ~= part then
43        print(hit)
44            local burn = game.ReplicatedStorage.hit
45 
46part:Destroy()
47        part.CFrame = CFrame.new(End)
48        local hum = hit.Parent:FindFirstChild("Humanoid") or hit.Parent.Parent:FindFirstChild("Humanoid")
49        if hum then
50            hum:TakeDamage(damageAmount)
51            spawn(function()
52    loll = Instance.new("Sound")
53loll.Parent = hit
54loll.SoundId = "rbxassetid://2394767979"
55loll.MaxDistance = 100
56lol.EmitterSize = 100
57loll:Play()
58                hum.PlatformStand = true
59                wait(10)
60                hum.PlatformStand = false
61            end)
62    else
63    local burnHit = burn:Clone()
64    --burnHit.CFrame = CFrame.new(End)
65    burnHit.Parent = workspace
66 local hit, pos, normal = game.Workspace:FindPartOnRay(ray)
67burnHit.CFrame = CFrame.new(pos, pos * normal)
68loll = Instance.new("Sound")
69loll.Parent = burnHit
70loll.SoundId = "rbxassetid://2394767979"
71loll.MaxDistance = 100
72lol.EmitterSize = 100
73loll:Play()
74        end
75break
76    end
77        wait(timeTillNext)
78    end
79end)
80end)
 View all 80 lines...

it has to do with

`1`	`local` `hit, pos, normal` `=` `game.Workspace:FindPartOnRay(ray)`

`2`	`burnHit.CFrame` `=` `CFrame.new(pos, pos + normal)`

Is it a Decal? If so make sure it's set to show up on the FrontSurface. If it's just a MeshPart or something, you'll need to rotate it 90 degrees about the X axis or so. jakedies 315 — 6y

How would I do that? It is a decal on a part. zValerian 108 — 6y

Set the Face property to Front, https://www.robloxdev.com/api-reference/property/FaceInstance/Face jakedies 315 — 6y

its a thin part that has the decal and both sides. I clone it and its supposed to appear where the ray ends zValerian 108 — 6y

View all comments (2 more)

this is the part: https://gyazo.com/d5c2a1fee1dfbb615c0fb8aeaac9ec6a (its usually transparent but im just showing you it) the decal is on both sides. It's supposed to appear where the ray ends but this happens: https://gyazo.com/6d5683fec1e3ecb026032e23871bb177 zValerian 108 — 6y

https://forum.scriptinghelpers.org/topic/22/bullet-holes-on-surfaces 1waffle1 2908 — 6y

How do I use surface normals to make a 'bullet mark' where a ray ends?

1 answer

Answer this question