How do I make a blood puddle when someone gets hurt? [closed]

First of all create a localscript and put it in the player, once you've done that set up an anonymous function to fire when the humanoid takes damage.

local hum = script.Parent.Humanoid
local LastHealth = hum.Health
local maxSize = 5 -- Determines the maximum size of the blood pool

script.Parent.Humanoid.HealthChanged:connect(function(Health)
    local change = math.abs(LastHealth - Health) -- this will let us create a bloodpool proportional to the change ofHealth
    if LastHealth > Health then
        local Pool = Instance.new("Part", game.Workspace) -- creates the new part and sets it's values
        Pool.Anchored = false
        Pool.BrickColor = BrickColor.new("Bright red")
        Pool.FormFactor = "Custom"
        Pool.Size = Vector3.new((change/hum.MaxHealth)*maxSize, 0.2, (change/hum.MaxHealth)*maxSize) --Defined maxSize on Line 3 of the script, make it what ever you want. 
        Pool.TopSurface = "Smooth"
        Pool.BottomSurface = "Smooth"
        Pool.CFrame = CFrame.new() + script.Parent.Torso.CFrame * Vector3.new(0, -3, 0) -- should place it below the players feet.
        --Optional add a mesh here to make it round.
        Pool.CanCollide = false;
        Pool.Touched:connect(function(hit)
            if not hit.Parent:FindFirstChild("Humanoid") then
                Pool.Anchored = true
            end
        end)
        Spawn(function()        -- spawns this function on a separate thread so it doesn't stall this one
            wait(60)
            Pool:Destroy() -- destroys the pool after 60 seconds.
        end)
    end
    LastHealth = Health -- sets LastHealth to Health so that next time the script runs change can be calculated correctly
end)

Try this out and see if it works :).

To make this work for all players add a script to the workspace, then add a localscript to that script with the disabled property checked. Add the above code to the localscript.

In the script use this code

game.Players.ChildAdded:connect(function(Player) -- fires when a player joins the game
    Player.CharacterAdded:connect(function(Character) -- fires when it's character is added
        local poolScript = script.LocalScript:Clone() -- clones the localscript
        poolScript.Parent = Character -- parents it to the character
        poolScript.Disabled = false -- enables it
    end)
end)

What this will do is clone the localscript containing the pool code into each of the players characters when they join the game and whenever they respawn.

EDIT: So I've compiled the localscript at the top for you, it's in one part now.

Layout in Explorer:
Workspace
-Script (2nd codeblock goes here)
--LocalScript (1st codeblock goes here)

When you script this, it would be a good idea to make it a function, then you can just call it every time someone dies :3

PS, i also play catching fire x3