So, I am making a simple PvP game with a glock, sprint system, ragdoll system and my main problem: a blood system, The thing itself works really well, However it is suppossed to create a part with a trail simulating a blood particle, However it only appears wherever it is on the workspace (Studio), Here's the main blood script (Thing that makes the blood appear):

local HP_PER_SPOT = 7.5 -- how many health points lost allows for a blood spot
local MAX_SPLATTERS = 100 -- max amt to generate
local CONE_ANGLE = 360 -- the angle of the cone of downward spray - MUST BE <180
local MAX_SPLATTER_DISTANCE = 120 -- how far away to splatter at the most
local MIN_SIZE, MAX_SIZE = 0.3, 4 -- min, max radius of particles
local LIFETIME = 30 -- how long to keep spatters

CONE_ANGLE = math.rad(CONE_ANGLE/2)
local template = script:WaitForChild("SplatTemplate"):Clone()
script.SplatTemplate:Destroy()
local model = Instance.new("Model", workspace)
model.Name = "Splatters"


local function Expand(obj, size)
	local start = obj.Size
	local cframe = obj.CFrame
	for i = 0, 1, 0.05 do
		wait()
		obj.Transparency = 0.5
		obj.Size = start:Lerp(size, i)
		obj.CFrame = cframe
	end
	wait(LIFETIME)
	for i = 0, 1, 0.05 do
		wait()
		obj.Transparency = 0.6
	end
	obj:Destroy()
end

local function GetNormal(part, pos)
	local shape
	if part:IsA("Part") then shape = part.Shape.Value
	elseif part:IsA("WedgePart") then shape = 3
	elseif part:IsA("CornerWedgePart") then shape = 4
	else shape = 5
	end
	if shape == 0 then
		return (pos-part.Position).unit, "curve", pos
	elseif shape == 1 or shape == 3 then
		local r = part.CFrame:pointToObjectSpace(pos)/part.Size
		local rot = part.CFrame-part.Position
		if r.x > 0.4999 then return rot*Vector3.new(1,0,0), "right", pos
		elseif r.x < -0.4999 then return rot*Vector3.new(-1,0,0), "left", pos
		elseif r.y > 0.4999 then return rot*Vector3.new(0,1,0), "top", pos
		elseif r.y < -0.4999 then return rot*Vector3.new(0,-1,0), "bottom", pos
		elseif r.z > 0.4999 then return rot*Vector3.new(0,0,1), "back", pos
		elseif r.z < -0.4999 then return rot*Vector3.new(0,0,-1), "front", pos
		end
		return rot*Vector3.new(0,part.Size.Z,-part.Size.Y).unit, "ramp", pos
	elseif shape == 2 then -- Cylinders
		return (pos-part.Position).unit, "curve", pos
	elseif shape == 4 then
		local r = part.CFrame:pointToObjectSpace(pos)/part.Size
		local rot = part.CFrame-part.Position
		if r.x > 0.4999 then return rot*Vector3.new(1,0,0), "right", pos
		elseif r.y < -0.4999 then return rot*Vector3.new(0,-1,0), "bottom", pos
		elseif r.z < -0.4999 then return rot*Vector3.new(0,0,-1), "front", pos
		elseif r.unit:Dot(Vector3.new(1,0,1).unit) > 0 then return rot*Vector3.new(0,part.Size.Z,part.Size.Y).unit, "lslope", pos
		end
		return rot*Vector3.new(-part.Size.Y,part.Size.X,0).unit, "rslope", pos
	else
		return Vector3.new(0,1,0), "unknown", pos
	end
end

local min, random, rad, pi, tan = math.min, math.random, math.rad, math.pi, math.tan
local ignore = {model}
game.Players.PlayerAdded:connect(function(player)
	player.CharacterAdded:connect(function(character)
		local torso, humanoid = character:WaitForChild("Torso"), character:WaitForChild("Humanoid")
		local lastHealth = humanoid.Health
		table.insert(ignore, character)
		humanoid.HealthChanged:connect(function(health)
			for i = 1, min(MAX_SPLATTERS, (lastHealth-health)/HP_PER_SPOT) do
				local part, pos
				local try = 1
				repeat
					local p
					repeat
						p = Vector2.new(random()*2-1, random()*2-1)
					until p.magnitude <= 1
					local r = tan(random()*CONE_ANGLE)
					local dir = Vector3.new(r*p.x, -1, r*p.y).unit
					part, pos = workspace:FindPartOnRayWithIgnoreList(Ray.new(torso.Position, dir*MAX_SPLATTER_DISTANCE), ignore)
					try = try + 1
				until part or try > 5
				if part then
					local splat = template:Clone()
					local size = min(splat.Size.X, splat.Size.Z) * MIN_SIZE + random()*(MAX_SIZE-MIN_SIZE)
					splat.FormFactor = Enum.FormFactor.Custom
					splat.Size = Vector3.new()
					splat.CFrame = CFrame.new(pos, pos + GetNormal(part, pos)) * CFrame.Angles(-pi/2, 0, 0)
					splat.Transparency = 1
					coroutine.resume(coroutine.create(function()
						Expand(splat, Vector3.new(size, splat.Size.Y, size))
					end))
					splat.Parent = model
				end
			end
			lastHealth = health
		end)
	end)
end)

There's also a script on the part with the trail that's causing the problem;

local repathTime = 50 --time in seconds between calculation of random paths
local maxSpeed = 100 --must be positive, this will also make it go backwards sometimes and works in both non-up/down directions

--do not touch the script after here
math.randomseed(tick())
local part = script.Parent
if part:IsA("BasePart") then
	while true do
		local speed1 = math.random(1, maxSpeed)
		local dir1 = math.random (1, 250)
		local speed2 = math.random(1, maxSpeed)
		local dir2 = math.random (1, 500)
		if dir1 % 2 == 1 then
			speed1 = -speed1
		end
		if dir2 % 2 == 1 then
			speed2 = -speed2
		end
		part.Velocity = Vector3.new(speed1, 0, speed2)
		wait(repathTime)
	end
end

Yes, This script isn't mine, However i suck at scripting and i'm in a desperate need for a blood system since most scripts are either on death or for R15 (While my game is in R6 for the gun system to work correctly), If anyone could help it would be greatly appreciated. Note: The blood is suppossed to work like the type of blood from old blood flow or current criminality, However as explained above, Particles stay wherever the part is in the workspace.

Here's a video showing the problem i have (I forgot to pause the video i was watching, Sorry!) https://youtu.be/DZN7qvapyx0

AnonymousEdited