Apr 10th, 2016

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--Won't help you *generate* terrain, but should make it easier for you to go 'hey roblox, fill THIS region with THIS material at THIS occupancy', or 'hey roblox, give me THIS region of terrain data', all using Vector3 coords instead of whatever the heck Vector3int16 is.
--Note on that, by the way: Coordinates are Vector3s by VOXEL coordinates, not STUD coordinates. So 'getDataAtPoint(Vector3.new(10, 10, 10))' will return the Enum.Material and float occupancy of the voxel located at stud coordinate (42, 42, 42).
local LibMath ={}--Slight edit, this is normally an external module. I added the two required functions here to make this standalone ;)
--Make sure the Vector3 is a Vector3, and floor it for node-ing.
ifnotpcall(function()return pos.x pos.x end)then warn('Whatever you put into here, it's not a Vector3!')returnnilend
local pos = Vector3.new(math.floor(pos.x),math.floor(pos.y),math.floor(pos.z))--Idiotproofing, position must be integers.
end
--Weighted random: Pass in a table of key-value pairs, where the keys can be either ints or strings, and values are ints >= 1.
--Will return one of the keys randomly (based on weights), or nil if the table be invalid.
--Params: Table (format: {Integer/String key = Integer value, ..})
--Returns: Integer/String key, or nil if you did tables wrong
result =nil
local index =1
--Set up table, eith 'value' copies of 'key'
if value <0then value =0end
weighttable[index]= key
end
result = weighttable[math.random(1,#weighttable)]
return result
local COORD_SCALAR = Vector3.new(VOXEL_SIZE, VOXEL_SIZE, VOXEL_SIZE)
local terrainMaterials ={ Enum.Material.Air, Enum.Material.Grass, Enum.Material.WoodPlanks, Enum.Material.Glacier, Enum.Material.Mud, Enum.Material.CrackedLava,
Enum.Material.Concrete, Enum.Material.Sand, Enum.Material.Rock, Enum.Material.Sandstone, Enum.Material.Ground, Enum.Material.Slate, Enum.Material.Brick,
Enum.Material.Water, Enum.Material.Snow, Enum.Material.Basalt }
startPos = LibMath.verifyAndFloorVector3(startPos)
ifnot startPos ornot endPos thenreturnnilend
return LibMath.minMaxVector3Pair(startPos, endPos)
localfunction vector3ToVoxelRegion(startPos, endPos)
startPos, endPos = checkVector3Pair(startPos, endPos)
return Region3.new(startPos * COORD_SCALAR,(endPos + Vector3.new(1,1,1))* COORD_SCALAR)
local startPos, endPos = LibMath.getVector3sFromRegion3(region)
return vector3ToVoxelRegion(startPos, endPos)
for _, mat inpairs(terrainMaterials)doif mat material thenreturntrueendendreturnfalse
module.make3dArray =function(startPos, endPos, prepopulatedValue,..)
startPos, endPos = checkVector3Pair(startPos, endPos)
local array ={}
array[x]={}
array[x][y]={}
if prepopulatedValue then
array[x][y][z]= prepopulatedValue(..)--Oh please be pcall'd..
array[x][y][z]= prepopulatedValue
end
end
--/b/rotip: Use array.Start and array.End to generate the Region3 for WriteVoxels.. just remember to multiply by 4 and that the second V3 needs to be one bigger!
array.End = endPos
return array
module.getRandomMaterial =function()return terrainMaterials[math.random(1,#terrainMaterials)]end
module.getWeightedRandomMaterial =function(weightTable)
ifnottype(weightTable)'table'thenreturn module.getRandomMaterial()end--Sure why not
for _, v inpairs(terrainMaterials)do
weightTable2[v]= weightTable[v]or1;--Use weight from table if entry is present, or default of 1
weightTable2[v]=math.max(0,math.floor(weightTable2[v]))--Ensure the weight is >= 0 and an integer
return LibMath.weightedRandom(weightTable2)
point = LibMath.verifyAndFloorVector3(

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