my brain hurts

-- Sword Server Script
-- By Sylvern
-- 4/19/2020

--[[

    Add animations when received.
    Animations switch are Underhand and Overhand.

]] --

local Player =
    script:FindFirstAncestorWhichIsA("Player") or
    game:GetService("Players"):GetPlayerFromCharacter(script.Parent.Parent)
local Players = game:GetService("Players")

local Debris = game:GetService("Debris")
local Storage = game:GetService("ReplicatedStorage")

local Tool = script.Parent

local Handle = Tool:WaitForChild("Handle")

local Animations = Tool:WaitForChild("Animations")
local Particle = Storage:WaitForChild("ParticleEmitter")

local Configuration = Tool:WaitForChild("Configuration")

local Damage = Configuration:WaitForChild("Damage")
local BlockDamage = Configuration:WaitForChild("BlockDamage")

local Event = script.Parent:WaitForChild("ChangeAnimation")

local Cooldown = 0.3

local RaycastHitBox = require(Tool:WaitForChild("RaycastHitbox"))
local HitBox = RaycastHitBox:Initialize(Handle)

local Ev = Tool:WaitForChild("Weld")

local AnimationOn = "1" -- underhand

local Sounds = Tool:WaitForChild("Sounds")
--

--[[
    Animation 1 = Underhand
    Animation 2 = Overhand
]] local OnCooldown = false

function playSound(sound)
    sound:Play()
end

HitBox.OnHit:Connect(
    function(hit, humanoid)
        if hit.Parent.Name == Player.Name then
            return
        end

        if hit.Parent.Humanoid then
            local Facing = hit.Parent.HumanoidRootPart.CFrame.LookVector
            local Vector = (Player.Character.HumanoidRootPart.Position - hit.Parent.HumanoidRootPart.Position).unit
            local Angle = math.acos(Facing:Dot(Vector))
            --        warn(Angle) -- 0.2 or 2

            if game.Players:FindFirstChild(hit.Parent.Name) then
                --        warn(hit.Parent.Name)

                local playerPlr = game.Players:FindFirstChild(hit.Parent.Name)

                if playerPlr.onBack.Value == true and Angle >= 2 and playerPlr.isBlocking.Value == 'No' or playerPlr.isBlocking.Value == 'None' then
                    warn "Shield is on back. Cant attack."

                    playSound(Sounds:WaitForChild('ShieldHit'))
                    return
                end


                if playerPlr.isBlocking.Value == "Yes" and Angle >= 2 then
                    humanoid:TakeDamage(Damage.Value)
                    cloneBlood(hit.Parent.HumanoidRootPart)
                    Knockback(hit.Parent.HumanoidRootPart, Player.Character.HumanoidRootPart)
                    KnockForward(Player.Character.HumanoidRootPart)
                    playSound(Sounds:WaitForChild("Hit"))

                    --        warn("what is minecraft...")
                    return
                end

                if playerPlr.isBlocking.Value == "Yes" and Angle <= 1 then
                    --  humanoid:TakeDamage(BlockDamage.Value)
                    --  cloneBlood(hit.Parent.HumanoidRootPart)
                    playSound(Sounds:WaitForChild("ShieldHit"))
                    reduceStamina(playerPlr)
                    --                  Knockback(hit.Parent.HumanoidRootPart, Player.Character.HumanoidRootPart)
                    --      KnockForward(Player.Character.HumanoidRootPart)

                    --             warn("what is my life")
            --      stopHit(playerPlr)
                    return
                end

                if playerPlr.isBlocking.Value == "No" or "None"  then
                    humanoid:TakeDamage(Damage.Value)
                    cloneBlood(hit.Parent.HumanoidRootPart)
                    Knockback(hit.Parent.HumanoidRootPart, Player.Character.HumanoidRootPart)
 --                   KnockForward(Player.Character.HumanoidRootPart)
                    playSound(Sounds:WaitForChild("Hit"))
                    return
                end
            else
                --      warn(hit.Parent.Name)

                Slowness(hit.Parent.HumanoidRootPart)
                cloneBlood(hit.Parent.HumanoidRootPart)
                Knockback(hit.Parent.HumanoidRootPart, Player.Character.HumanoidRootPart)

     --           KnockForward(Player.Character.HumanoidRootPart)

                hit.Parent.Humanoid:TakeDamage(Damage.Value)
                playSound(Sounds:WaitForChild("Hit"))
                return
            end
        end

        -- Add hit animation to player.
    end
)

function stopHit(plr)
    plr:WaitForChild('CanHit').Value = false
    wait(2)
    plr:WaitForChild('CanHit').Value = true
end


function reduceStamina(plrModel)
    local shieldStrength = plrModel:FindFirstChild("ShieldStrength")

    if shieldStrength then
        shieldStrength.Value = shieldStrength.Value - 30
    end
end

function cloneBlood(plrModel)
    local Clone = Particle:Clone()
    Clone.Parent = plrModel
    Debris:AddItem(Clone, 0.8)
end

function Slowness(plrModel)
    local BV = Instance.new("BodyVelocity", plrModel)
    BV.Name = "Slowness"
    BV.MaxForce = Vector3.new(math.huge, math.huge, math.huge)
    BV.P = 2000
    BV.Velocity = Vector3.new(0, 0, 0)
    Debris:AddItem(BV, 0.2)
end

function KnockForward(plrModel)
    local BV = Instance.new("BodyVelocity", plrModel)
    BV.Name = "Knockback"
    BV.MaxForce = Vector3.new(math.huge, math.huge, math.huge)
    BV.P = 2000
    BV.Velocity = plrModel.CFrame.lookVector * 15
    Debris:AddItem(BV, 0.2)
end

function Knockback(plrModel, plrAttacking)
    local BV = Instance.new("BodyVelocity", plrModel)
    BV.Name = "Knockback"
    BV.MaxForce = Vector3.new(math.huge, math.huge, math.huge)
    --  BV.P = 2000
    BV.Velocity = plrAttacking.CFrame.lookVector * 18
    Debris:AddItem(BV, 0.2)
end

function LoadAnimation(plrModel, animation)
    local Animation = plrModel.Humanoid:LoadAnimation(animation)
    Animation:Play()
end

Tool.Activated:Connect(
    function()
        if OnCooldown then
            return
        end -- Debounce cooldown.

        if Player:WaitForChild('CanHit').Value == false then
            return
        end -- Can hit check.

        OnCooldown = true
        LoadAnimation(game.Workspace[Player.Name], Animations[AnimationOn])
        playSound(Sounds:WaitForChild("Swing"))
        warn(AnimationOn)
        HitBox:HitStart()
        wait(0.8)
        HitBox:HitStop()

        wait(Cooldown)
        OnCooldown = false

        -- Play animation.
    end
)

Event.OnServerEvent:Connect(
    function(plr) -- 1 is underhand and 2 is overhand
        if AnimationOn == "1" then
            AnimationOn = "2"
            warn(AnimationOn)
        elseif AnimationOn == "2" then
            AnimationOn = "3"
            warn(AnimationOn)
        elseif AnimationOn == "3" then
            AnimationOn = "1"
            warn(AnimationOn)
        end
    end
)
Ev.OnServerEvent:Connect(
    function(plr, action)
        if action == "UnEquip" then
            LoadAnimation(game.Workspace[plr.Name], Tool:WaitForChild("UnEquip"))
            --  wait(0.5)
            local char = plr.Character
            local copy = Storage:WaitForChild("SwordCopy"):Clone()

            copy.Parent = char
            copy.UpperTorso.Part1 = char.UpperTorso
        end

        if action == "Equip" then
            plr.Character:FindFirstChild("SwordCopy"):Destroy()
            LoadAnimation(game.Workspace[plr.Name], Tool:WaitForChild("Equip"))
        end
    end
)