local BLOCK_DATA = {
	full = {
		{
			size = Vector3.one * 3,
			offset = Vector3.new()
		}
	},
	half = {
		{
			size = Vector3.new(3, 1.5, 3),
			offset = Vector3.new(0, -0.75, 0),
		},
		{
			size = Vector3.new(3, 3, 3),
			offset = Vector3.new(),
			hidden = true
		},
	},
	stair = {
		{
			size = Vector3.new(3, 1.5, 3),
			offset = Vector3.new(0, -0.75, 0),
		},
		{
			size = Vector3.new(1.5, 1.5, 3),
			offset = Vector3.new(0.75, 0.75, 0),
		},
	},
	corner_stair = {
		{
			size = Vector3.new(3, 1.5, 3),
			offset = Vector3.new(0, -0.75, 0),
		},
		{
			size = Vector3.new(1.5, 1.5, 1.5),
			offset = Vector3.new(0.75, 0.75, 0.75),
		},
	},
}

local BLOCK_TEXTURES = {
	oak_block = 5625184464,
	oak_log = {
		_DEFAULT = 3258599312,
		
		Top = 3595694398,
		Bottom = 3595694398,
	},
	wood_door = {
		_TRANS = true,
		_MESH = {
			size = Vector3.new(1, 1, 0.1),
			offset = Vector3.new(0, 0, -1.35)
		},
		_SIZE = Vector3.new(1, 2, 1),
		
		Left = {7375901941, u = 4, v = 4},
		Right = {7375901941, u = 4, v = 4},
		Top = {7375901941, u = 4, v = 4},
		Bottom = {7375901941, u = 4, v = 4},

		Front = {7375888920, decal = true},
		Back = {7375901941, decal = true},
	},
	glass_block = {
		_DEFAULT = 4722585572, 		
		_TRANS = true,
	},
	cobblestone = 5003953441
}

local block_cache = {}

function new_block(blockmesh, position, rotation, texture)	
	position = Vector3.new(math.round(position.X / 3) * 3, math.round(position.Y / 3) * 3, math.round(position.Z / 3) * 3)

	local block = Instance.new("Model")
	for i = 1, #blockmesh do 
		local partdata = blockmesh[i]
		local part = Instance.new("Part")
		part.Anchored = true 
		part.CanTouch = false 
		part.Transparency = partdata.hidden and 1 or 0
		part.Size = partdata.size
		part.Position = partdata.offset
		part.Parent = block
		part:SetAttribute("BLOCK_MESH_PART", true)
		
		if texture and not partdata.hidden then
			local texture_type = typeof(texture)
			if texture_type == "number" then
				for _, normal in Enum.NormalId:GetEnumItems() do
					local new = Instance.new("Texture")
					new.StudsPerTileU = 3
					new.StudsPerTileV = 3
					new.Face = normal
					new.Texture = `rbxassetid://{texture}`
					new.Parent = part 
				end	
			elseif texture_type == "table" then
				if texture._TRANS then
					part.Transparency = 1
				end
				if texture._SIZE then
					part.Size *= texture._SIZE
				end
				if texture._MESH then
					local mesh = Instance.new("SpecialMesh")
					mesh.MeshType = Enum.MeshType.Brick
					mesh.Scale = texture._MESH.size
					mesh.Offset = texture._MESH.offset
					mesh.Parent = part
				end
				for face_index, normal in Enum.NormalId:GetEnumItems() do
					local texture_face = texture[normal.Name] or texture._DEFAULT or 9094483835
					local texture_face_type = typeof(texture_face)
					if texture_face_type == "number" then
						local new = Instance.new("Texture")
						new.StudsPerTileU = 3
						new.StudsPerTileV = 3
						new.Face = normal
						new.Texture = `rbxassetid://{texture_face}`
						new.Parent = part 
					elseif texture_face_type == "table" then
						if texture_face.decal then
							local new = Instance.new("Decal")
							new.Texture = `rbxassetid://{texture_face[1]}`
							new.Face = normal
							new.Parent = part 
						else 
							local new = Instance.new("Texture")
							new.StudsPerTileU = texture_face.u or 3
							new.StudsPerTileV = texture_face.v or 3
							new.Face = normal
							new.Texture = `rbxassetid://{texture_face[1]}`
							new.Parent = part 
						end
					end
				end
			end
		end
	end
	block.Parent = script
	block:PivotTo(CFrame.new(position) * rotation)
end

owner.Chatted:Connect(function(m)
	local args = m:split("/")
	if args[1] == "minecraft" then
		if args[2] == "new_block" then
			if args[3] == "help" then
				print("minecraft/new_block/full/~0 ~1 ~0/0 0 0/oak_block")
				return
			end
			local playerpos = owner.Character.Head.Position
			local rx, ry, rz = table.unpack(args[5]:split(" "))
			local x, y, z = table.unpack(args[4]:split(" "))
			
			local function parse_localpos(x, y, z, b)
				local xsplit = x:split("~")
				local ysplit = y:split("~")
				local zsplit = z:split("~")
				
				local p = Vector3.new(x, y, z)
				
				if xsplit[2] then
					p += Vector3.new(b.X, 0, 0)
				end
				if ysplit[2] then
					p += Vector3.new(0, b.Y, 0)
				end
				if zsplit[2] then
					p += Vector3.new(0, 0, b.Z)
				end
								
				return p
			end
			
			local pos = parse_localpos(x, y, z, playerpos)

			new_block(BLOCK_DATA[args[3]],pos, CFrame.Angles(math.rad(rx),math.rad(ry),math.rad(rz)),BLOCK_TEXTURES[args[6]])
		end
	end
end)

do 
	local t = Instance.new("Tool", owner.Backpack)
	
	local rem = Instance.new("RemoteFunction", t)
	
	NLS([[local uis = game:GetService"UserInputService"
	script.Parent.OnClientInvoke = function()
		local loc = uis:GetMouseLocation()
		local r = workspace.CurrentCamera:ViewportPointToRay(loc.X, loc.Y)
		local result = workspace:Raycast(r.Origin, r.Direction * 1000)
		return result and (result.Position + result.Normal), r.Origin
	end]], rem)
	
	t.Name = "new_block"
	
	local shape = BLOCK_DATA.full
	local tex = BLOCK_TEXTURES.oak_block
	
	t.RequiresHandle = false
	t.Activated:Connect(function()
		local pos, origin = rem:InvokeClient(owner)
		if pos then
			local rot = CFrame.lookAt(pos, origin)
			local rx, ry, rz = rot:ToEulerAnglesXYZ()
			local rightangle = math.pi / 2
			new_block(shape, pos, CFrame.Angles(math.round(rx / rightangle) * rightangle,math.round(ry / rightangle) * rightangle,math.round(rz / rightangle) * rightangle) * CFrame.Angles(0, -rightangle, 0), tex)
		end
	end)
	
	owner.Chatted:Connect(function(m)
		local args = m:split("/")
		if args[1] == "shape" then
			shape = BLOCK_DATA[args[2]]
		end
		if args[1] == "tex" then
			tex = BLOCK_TEXTURES[args[2]]
		end
	end)
end

do 
	local t = Instance.new("Tool", owner.Backpack)

	local rem = Instance.new("RemoteFunction", t)

	NLS([[local uis = game:GetService"UserInputService"
	script.Parent.OnClientInvoke = function()
		local loc = uis:GetMouseLocation()
		local r = workspace.CurrentCamera:ViewportPointToRay(loc.X, loc.Y)
		local result = workspace:Raycast(r.Origin, r.Direction * 1000)
		return result and result.Instance
	end]], rem)

	t.Name = "remove_block"

	t.RequiresHandle = false
	t.Activated:Connect(function()
		local target = rem:InvokeClient(owner)
		if target then
			if target:GetAttribute("BLOCK_MESH_PART") then
				target.Parent:Destroy()
			end
		end
	end)
end