camera for roblox

-- services

local UserInputService  = game:GetService("UserInputService")
local RunService        = game:GetService("RunService")
local Workspace         = game:GetService("Workspace")
local Players           = game:GetService("Players")

-- constants

local PLAYER        = Players.LocalPlayer
local CAMERA        = Workspace.CurrentCamera
local IGNORE        = Workspace:WaitForChild("Ignore")
local CHARACTERS    = Workspace:WaitForChild("Characters")
local CHARACTER     = CHARACTERS:WaitForChild(PLAYER.Name)
local BIKE          = IGNORE:WaitForChild(PLAYER.Name .. "Bike")
local CHAR          = IGNORE:WaitForChild(PLAYER.Name .. "Character")

-- variables

local modes = {
    "Orbit";
    "Follow";
    "FPS";
    "Track";
    "Gopro";
    "Gopro2";
}

local mode  = 1

local x, y  = 0, 0

-- functions

local function Lerp(a, b, d) return a + (b - a) * d end

-- initiate

UserInputService.MouseIconEnabled   = true
--UserInputService.MouseBehavior        = Enum.MouseBehavior.LockCenter

CAMERA.FieldOfView      = 80
CAMERA.CameraType       = Enum.CameraType.Custom
CAMERA.CameraSubject    = CHARACTER

RunService:BindToRenderStep("Camera", Enum.RenderPriority.Last.Value, function(deltaTime)
    CAMERA.FieldOfView  = Lerp(CAMERA.FieldOfView, 80 + CHARACTER.Velocity.Magnitude / 5, math.min(deltaTime * 5, 1))

    if modes[mode] == "FPS" then
        CHAR.Head.LocalTransparencyModifier = 1
    else
        CHAR.Head.LocalTransparencyModifier = 0
    end

    if modes[mode] == "Orbit" then
        local center    = CHARACTER.Position + Vector3.new(0, 2, 0)
        local cframe    = CFrame.new(center) * CFrame.Angles(0, x, 0) * CFrame.Angles(y, 0, 0) * CFrame.new(0, 0, 20)
        local rotation  = cframe - cframe.p

        local ray           = Ray.new(center, (cframe.p - CHARACTER.Position))
        local _, position   = Workspace:FindPartOnRayWithIgnoreList(ray, {CHARACTERS, IGNORE})
        CAMERA.CFrame       = CFrame.new(position) * rotation
    elseif modes[mode] == "Follow" then
        CAMERA.CFrame   = CAMERA.CFrame:Lerp(BIKE.Frame.CFrame * CFrame.new(0, 5, 10), math.min(deltaTime * 2, 1))
    elseif modes[mode] == "FPS" then
        local offset    = CHAR.Hips.CFrame:toObjectSpace(CHAR.Torso.CFrame)
        CAMERA.CFrame   = CHAR.Head.CFrame * CFrame.Angles(-offset.Z * 0.2, 0, 0)
    elseif modes[mode] == "Track" then
        local distance  = (CAMERA.CFrame.p - CHARACTER.Position).Magnitude

        CAMERA.FieldOfView  = math.clamp(100 - distance, 10, 90)
        CAMERA.CFrame   = CAMERA.CFrame:Lerp(CFrame.new(CAMERA.CFrame.p, CHARACTER.Position), math.min(deltaTime * 5, 1))
    elseif modes[mode] == "Gopro" then
        CAMERA.FieldOfView  = 100
        CAMERA.CFrame       = BIKE.Frame.CFrame * CFrame.new(2, 0, 2)
    elseif modes[mode] == "Gopro2" then
        CAMERA.FieldOfView  = 100
        CAMERA.CFrame       = BIKE.Frame.CFrame * CFrame.new(0, 3, -1.2)
    end

    CAMERA.Focus    = CFrame.new(CHARACTER.Position)
end)

-- events

UserInputService.InputChanged:connect(function(inputObject, processed)
    if not processed then
        if modes[mode] == "Orbit" then
            x   = (x - inputObject.Delta.X * (1/260)) % (math.pi * 2)
            y   = math.clamp(y - inputObject.Delta.Y * (1/260), -1.4, 1.4)
        end
    end
end)

UserInputService.InputBegan:connect(function(inputObject, processed)
    if not processed then
        if inputObject.KeyCode == Enum.KeyCode.C then
            mode    = mode + 1
            if mode > #modes then
                mode    = 1
            end

            if modes[mode] == "Orbit" then
                local lookVector    = CAMERA.CFrame.lookVector
                x   = math.atan2(-lookVector.X, -lookVector.Z)
                y   = math.clamp(math.asin(lookVector.Y), -1.4, 1.4)
            end
        end
    end
end)