I am making a part generation script, and when a water tile is generated, each adjacent tile generated to that water tile is supposed to have a 60% chance of generating another water tile, which would make lakes or rivers. However, it just makes straight lines as shown in the picture. I have tried many things to get it to work, but cant figure it out.

Here is the script:

```
folder = Instance.new("Folder")
folder.Name = "MapTerrain"
folder.Parent =game.Workspace
local TotalRarity = 0
local ChanceTable = {}
local TotalTiles = 0
local debris = game:GetService("Debris")
for i, v in pairs(game.Workspace.Hills:GetDescendants()) do
local rar = v:GetAttribute("RarityWeight")
if rar ~= nil then
TotalRarity += rar
table.insert(ChanceTable, {Rarity = TotalRarity, Object = v})
end
end
table.sort(ChanceTable, function(a, b)
if a.Rarity < b.Rarity then
return true
end
return false
end)
function SelectPart()
local PartRan = math.random(0, TotalRarity)
local PartSelected
local PreviousStep = 0
for i, v in pairs(ChanceTable) do
if PartRan >= PreviousStep and PartRan <= v.Rarity then
PartSelected = v.Object
return PartSelected
end
PreviousStep = v.Rarity
end
end
function SpawnAdjacentTiles(CenterTile, Water)
if TotalTiles >= 6500 then return end
local OriginalPos
if CenterTile ~= nil then
if CenterTile:IsA("Model") then
OriginalPos = CenterTile.PrimaryPart.Position
else
OriginalPos = CenterTile.Position
end
if math.abs(OriginalPos.X) >= 4000 or math.abs(OriginalPos.Z) >= 4000 then return end
else
OriginalPos = Vector3.new(50, 0, 50)
end
for i = 1, 4 do
local x
local z
if i == 1 then x = 1 z = 0 elseif i == 2 then x =0 z = 1 elseif i == 3 then x = -1 z = 0 else x = 0 z = -1 end
local Tile = SelectPart()
if CenterTile ~= nil then
if Water and math.random(1, 10) >= 5 then
Tile = game.Workspace.Hills.BasicTiles.Water
end
else
end
Tile = Tile:Clone()
local special = false
local params = RaycastParams.new()
params.FilterDescendantsInstances = {folder, Tile}
params.FilterType = Enum.RaycastFilterType.Include
local rayRes = workspace:Raycast(OriginalPos, Vector3.new((x * 100), 0, (z*100)), params)
if Tile:GetAttribute("SpecialTile") == true then
special = true
end
Tile.Parent = folder
local Rotation = math.random(1, 4)
Rotation*=90
Rotation *= math.pi/180
if rayRes == nil then
if Tile:IsA("Model") then
Tile:PivotTo(CFrame.new(Vector3.new(OriginalPos.X + (x * 100), 12.5, OriginalPos.Z + (z*100)))*CFrame.Angles(0, Rotation, 0))
else
Tile.CFrame = CFrame.new(Vector3.new(OriginalPos.X + (x * 100), 12.5, OriginalPos.Z + (z*100)))*CFrame.Angles(0, Rotation, 0)
end
task.defer(function()
if Tile.Name == "Water" then
SpawnAdjacentTiles(Tile, true)
else
SpawnAdjacentTiles(Tile, false)
end
end)
TotalTiles += 1
else
Tile:Destroy()
end
end
end
SpawnAdjacentTiles()
```