Roblox Script Generated by ScripterAI

"Can you create a custom character movement system that simulates real life human behavior when moving around and overrides the default ROBLOX character movement?"

Creating a custom character movement system that simulates real-life human behavior is a complex task and would require a lot of code. However, I can provide you with a basic example of how to override the default Roblox character movement system and implement a custom one.

In this example, we will create a simple custom character movement system that allows the player to move forward, backward, left, and right using the WASD keys. This script should be placed in a LocalScript inside the StarterPlayerScripts folder.

```lua
local Players = game:GetService("Players")
local UserInputService = game:GetService("UserInputService")

local player = Players.LocalPlayer
local character = player.Character or player.CharacterAdded:Wait()
local humanoid = character:WaitForChild("Humanoid")
local rootPart = character:WaitForChild("HumanoidRootPart")

local moveDirection = Vector3.new(0, 0, 0)

local function updateMovement(input, isKeyDown)
	local inputKey = input.KeyCode
	if inputKey == Enum.KeyCode.W then
		moveDirection = moveDirection + Vector3.new(0, 0, -1)
	elseif inputKey == Enum.KeyCode.A then
		moveDirection = moveDirection + Vector3.new(-1, 0, 0)
	elseif inputKey == Enum.KeyCode.S then
		moveDirection = moveDirection + Vector3.new(0, 0, 1)
	elseif inputKey == Enum.KeyCode.D then
		moveDirection = moveDirection + Vector3.new(1, 0, 0)
	end
	
	if not isKeyDown then
		moveDirection = moveDirection * -1
	end
end

UserInputService.InputBegan:Connect(function(input, isProcessed)
	if isProcessed then return end
	updateMovement(input, true)
end)

UserInputService.InputEnded:Connect(function(input, isProcessed)
	if isProcessed then return end
	updateMovement(input, false)
end)

while true do
	wait()
	
	local cameraCFrame = workspace.CurrentCamera.CFrame
	local moveVector = cameraCFrame:VectorToWorldSpace(moveDirection)
	moveVector = Vector3.new(moveVector.X, 0, moveVector.Z)
	
	if moveVector.Magnitude > 0 then
		humanoid:Move(moveVector, true)
	else
		humanoid:Move(Vector3.new(0, 0, 0), true)
	end
end
```

This script will override the default Roblox character movement system and allow the player to move using the WASD keys. Keep in mind that this is a basic example, and simulating real-life human behavior would require a more advanced implementation, including animations, physics, and other factors.