GunClient

local character = game.Players.LocalPlayer.Character or game.Players.LocalPlayer.CharacterAdded:Wait()

local animations = {
    equip = character:WaitForChild("Humanoid"):LoadAnimation(script:WaitForChild("EquipAnimation")),
    hold = character:WaitForChild("Humanoid"):LoadAnimation(script:WaitForChild("HoldAnimation")),
    reload = character:WaitForChild("Humanoid"):LoadAnimation(script:WaitForChild("ReloadAnimation")),
    shoot = character:WaitForChild("Humanoid"):LoadAnimation(script:WaitForChild("ShootAnimation")),
}

local remoteEvent = game.ReplicatedStorage:WaitForChild("GunRE")

local gun = script.Parent
local gunSettings = require(gun.GunSettings)

local uis = game:GetService("UserInputService")

local mouse = game.Players.LocalPlayer:GetMouse()
local camera = workspace.CurrentCamera

local mouseDown = false

local cameraOffset = 0


--Equipping
gun.Equipped:Connect(function()
    remoteEvent:FireServer("ConnectM6D", gun)

    character.UpperTorso.GunMotor6D.Part0 = character.UpperTorso
    character.UpperTorso.GunMotor6D.Part1 = gun.BodyAttach

    game.Players.LocalPlayer.PlayerGui.GunGui.AmmoFrame.GunLabel.Text = gun.Name
    game.Players.LocalPlayer.PlayerGui.GunGui.AmmoFrame.AmmoLabel.Text = gun.CurrentAmmo.Value
    game.Players.LocalPlayer.PlayerGui.GunGui.Enabled = true
    uis.MouseIconEnabled = false

    animations["equip"]:Play()
    animations["equip"].Stopped:Wait()
    animations["hold"]:Play()
end)
--Unequipping
gun.Unequipped:Connect(function()
    remoteEvent:FireServer("DisconnectM6D", gun)

    game.Players.LocalPlayer.PlayerGui.GunGui.Enabled = false
    uis.MouseIconEnabled = true

    for i, animation in pairs(animations) do
        animation:Stop()
    end
end)

--Update ammo GUI when bullets change
gun.CurrentAmmo:GetPropertyChangedSignal("Value"):Connect(function()
    if gun.Parent == character then
        game.Players.LocalPlayer.PlayerGui.GunGui.AmmoFrame.AmmoLabel.Text = gun.CurrentAmmo.Value
    end
end)

--Clicking to shoot
mouse.Button1Down:Connect(function()
    mouseDown = true

    if gunSettings["automatic"] == true then
        repeat
            remoteEvent:FireServer("Shoot", gun, camera.CFrame, mouse.Hit)
            wait()
        until mouseDown == false

    else
        remoteEvent:FireServer("Shoot", gun, camera.CFrame, mouse.Hit)
    end
end)
--Letting go of click to stop shooting
mouse.Button1Up:Connect(function()
    mouseDown = false
end)

--Reload when player presses R
uis.InputBegan:Connect(function(inp, p)
    if not p and inp.KeyCode == Enum.KeyCode.R then
        remoteEvent:FireServer("Reload", gun)
    end
end)

--Apply recoil to camera and crosshair
game:GetService("RunService").Stepped:Connect(function()
    if gun.Parent == character then
        camera.CFrame = camera.CFrame:Lerp(camera.CFrame * CFrame.Angles(cameraOffset / 30, 0, 0), 0.2)
        cameraOffset = math.clamp(cameraOffset - 0.1, 0, math.huge)

        local crosshair = game.Players.LocalPlayer.PlayerGui.GunGui.CrosshairFrame
        crosshair.Position = UDim2.new(0, mouse.X, 0, mouse.Y)
        crosshair.Top.Position = UDim2.new(crosshair.Top.Position.X.Scale, 0, crosshair.Top.Position.Y.Scale, -math.clamp(cameraOffset, 0, 10) * 5)
        crosshair.Bottom.Position = UDim2.new(crosshair.Bottom.Position.X.Scale, 0, crosshair.Bottom.Position.Y.Scale, math.clamp(cameraOffset, 0, 10) * 5)
        crosshair.Left.Position = UDim2.new(crosshair.Left.Position.X.Scale, -math.clamp(cameraOffset, 0, 10) * 5, crosshair.Left.Position.Y.Scale, 0)
        crosshair.Right.Position = UDim2.new(crosshair.Right.Position.X.Scale, math.clamp(cameraOffset, 0, 10) * 5, crosshair.Right.Position.Y.Scale, 0)
    end
end)

--Server requests for gun
remoteEvent.OnClientEvent:Connect(function(gunEquipped, instruction, p3)
    if gunEquipped == gun then
        --Add recoil
        if instruction == "Recoil" then
            cameraOffset += gunSettings["cameraRecoil"]
            --Play reload animation
        elseif instruction == "Reload" then
            animations["reload"]:Play()
        end

        --Adjust tracer to be smoother on client
    elseif instruction == "Tracer" then

        local beamContainer = Instance.new("Part")
        beamContainer.Name = "BEAM CONTAINER"
        beamContainer.CanCollide = false
        beamContainer.Transparency = 1
        beamContainer.Anchored = true
        beamContainer.Parent = workspace

        local tracer = Instance.new("Beam")
        tracer.Color = ColorSequence.new{ColorSequenceKeypoint.new(0, Color3.fromRGB(255, 160, 40)), ColorSequenceKeypoint.new(1, Color3.fromRGB(255, 160, 40))}
        tracer.FaceCamera = true
        tracer.LightEmission = 5
        local atch0, atch1 = Instance.new("Attachment"), Instance.new("Attachment")
        atch0.Name, atch0.Name = "A0", "A1"
        atch0.Parent, atch1.Parent = beamContainer, beamContainer
        atch0.WorldPosition, atch1.WorldPosition = gunEquipped.ShootPart.Position, p3
        tracer.Attachment0, tracer.Attachment1 = atch0, atch1
        tracer.Width0, tracer.Width1 = 0.05, 0.05

        tracer.Parent = beamContainer
        game:GetService("Debris"):AddItem(beamContainer, 0.1)
    end
end)