codex: stuff

src/ReplicatedStorage/Shared/PlacementManager.lua

@@ -28,6 +28,55 @@ local function findParent(i: Instance): Instance
 end
 
 local Mouse: Mouse = nil
+local lastNormalId: Enum.NormalId? = nil
+
+local function normalIdToOffset(normal: Enum.NormalId): Vector3
+	if normal == Enum.NormalId.Top then
+		return Vector3.new(0, 1, 0)
+	elseif normal == Enum.NormalId.Bottom then
+		return Vector3.new(0, -1, 0)
+	elseif normal == Enum.NormalId.Left then
+		return Vector3.new(-1, 0, 0)
+	elseif normal == Enum.NormalId.Right then
+		return Vector3.new(1, 0, 0)
+	elseif normal == Enum.NormalId.Back then
+		return Vector3.new(0, 0, 1)
+	elseif normal == Enum.NormalId.Front then
+		return Vector3.new(0, 0, -1)
+	end
+	return Vector3.new(0, 0, 0)
+end
+
+local function offsetChunkBlock(chunk: Vector3, block: Vector3, offset: Vector3)
+	local cx, cy, cz = chunk.X, chunk.Y, chunk.Z
+	local bx, by, bz = block.X + offset.X, block.Y + offset.Y, block.Z + offset.Z
+
+	if bx < 1 then
+		bx = 8
+		cx -= 1
+	elseif bx > 8 then
+		bx = 1
+		cx += 1
+	end
+
+	if by < 1 then
+		by = 8
+		cy -= 1
+	elseif by > 8 then
+		by = 1
+		cy += 1
+	end
+
+	if bz < 1 then
+		bz = 8
+		cz -= 1
+	elseif bz > 8 then
+		bz = 1
+		cz += 1
+	end
+
+	return Vector3.new(cx, cy, cz), Vector3.new(bx, by, bz)
+end
 
 -- Gets the block and normalid of the block (and surface) the player is looking at
 function PlacementManager:Raycast()
@@ -40,6 +89,7 @@ function PlacementManager:Raycast()
 	if not objLookingAt then
 		PlacementManager.SelectionBox.Adornee = nil
 		script.RaycastResult.Value = nil
+		lastNormalId = nil
 		return
 	end
 	
@@ -48,10 +98,12 @@ function PlacementManager:Raycast()
 	if parent:GetAttribute("ns") == true then
 		PlacementManager.SelectionBox.Adornee = nil
 		script.RaycastResult.Value = nil
+		lastNormalId = nil
 		return
 	end
 	PlacementManager.SelectionBox.Adornee = parent
 	script.RaycastResult.Value = parent
+	lastNormalId = dir
 	return parent, dir
 end
 
@@ -59,16 +111,17 @@ function PlacementManager:RaycastGetResult()
 	return script.RaycastResult.Value
 end
 
-local placeRemote = game:GetService("ReplicatedStorage").PlaceBlock
-local breakRemote = game:GetService("ReplicatedStorage").BreakBlock
+local remotes = game:GetService("ReplicatedStorage"):WaitForChild("Remotes")
+local placeRemote = remotes:WaitForChild("PlaceBlock")
+local breakRemote = remotes:WaitForChild("BreakBlock")
 local tickRemote = game:GetService("ReplicatedStorage").Tick
 
 -- FIRES REMOTE
-function PlacementManager:PlaceBlock(cx, cy, cz, x, y, z, blockData)
+function PlacementManager:PlaceBlock(cx, cy, cz, x, y, z, blockId: string)
 	--print("placeblock")
 	--local chunk = ChunkManager:GetChunk(cx, cy, cz)
 	--chunk:CreateBlock(x, y, z, blockData)
-	placeRemote:FireServer(cx, cy, cz, x, y, z, blockData)
+	placeRemote:FireServer(cx, cy, cz, x, y, z, blockId)
 end
 
 -- FIRES REMOTE
@@ -97,11 +150,13 @@ function PlacementManager:GetBlockAtMouse(): nil | {chunk:Vector3, block: Vector
 	if selectedPart == nil then
 		PlacementManager.SelectionBox.Adornee = nil
 		script.RaycastResult.Value = nil
+		lastNormalId = nil
 		return nil
 	end
 	if not selectedPart.Parent then
 		PlacementManager.SelectionBox.Adornee = nil
 		script.RaycastResult.Value = nil
+		lastNormalId = nil
 		return nil
 	end
 	local chunkCoords = Util.BlockPosStringToCoords(selectedPart.Parent.Name)
@@ -114,6 +169,32 @@ function PlacementManager:GetBlockAtMouse(): nil | {chunk:Vector3, block: Vector
 
 end
 
+function PlacementManager:GetTargetAtMouse(): nil | {chunk:Vector3, block: Vector3, normal: Enum.NormalId}
+	local hit = PlacementManager:GetBlockAtMouse()
+	if not hit or not lastNormalId then
+		return nil
+	end
+
+	return {
+		chunk = hit.chunk,
+		block = hit.block,
+		normal = lastNormalId
+	}
+end
+
+function PlacementManager:GetPlacementAtMouse(): nil | {chunk:Vector3, block: Vector3}
+	local hit = PlacementManager:GetTargetAtMouse()
+	if not hit then
+		return nil
+	end
+	local offset = normalIdToOffset(hit.normal)
+	local placeChunk, placeBlock = offsetChunkBlock(hit.chunk, hit.block, offset)
+	return {
+		chunk = placeChunk,
+		block = placeBlock
+	}
+end
+
 function PlacementManager:Init()
 	game:GetService("RunService").Heartbeat:Connect(function()
 		local a,b = pcall(function()