Boss System v4 (STORY GAME)

local BossMonster = game.Workspace.boss_Monster --- Change by your BossNPC
local BossHealth = BossMonster.Humanoid.Health
local BossMinusHealth = 0

local function playMonsterAnimation()
    local animation = Instance.new("Animation",BossMonster)
    animation.AnimationId = "https://roblox.com/assets/?id=1083195517"

    local humanoid = BossMonster:FindFirstChild("Humanoid")
    humanoid:LoadAnimation(animation):Play()

    wait(1)

    animation:Destroy()
end

local function playMonsterAttackAnimation()
    local animation = Instance.new("Animation",BossMonster)
    animation.AnimationId = "https://roblox.com/assets/?id=115300646506302"

    local humanoid = BossMonster:FindFirstChild("Humanoid")
    humanoid:LoadAnimation(animation):Play()

    wait(1)

    animation:Destroy()
end

local function FireballChallenge()
    for i=1,3 do

        playMonsterAnimation()

        playMonsterAttackAnimation()

        for i,player in pairs(game.Players:GetPlayers()) do
            if player.Character then
                local fireball = game.ReplicatedStorage.Fireball:Clone()
                local target = game.ReplicatedStorage.Target:Clone()


                target.Parent = game.Workspace
                target.CFrame = (player.Character.HumanoidRootPart.CFrame - Vector3.new(0,3,0)) * CFrame.Angles(0,0,math.rad(90))

                wait(0.5)

                fireball.Parent = game.Workspace
                fireball.CFrame = target.CFrame + Vector3.new(0,60,0)

                wait(2)

                target:Destroy()
            end
        end

        wait(1)
    end
end

spawn(function()
    while true do
        wait(5)
        FireballChallenge()
        wait(5)
        FireballChallenge()
        wait(5)
        FireballChallenge()
        wait(5)
        BossMonster:PivotTo(workspace.BossTeleports.StartTeleport.CFrame)
        wait(5)
        BossMonster:PivotTo(workspace.BossTeleports.EndTeleport.CFrame)
        if BossHealth <= BossMinusHealth then
            break
        end
    end
end)

repeat wait(0.1) until BossHealth <= BossMinusHealth