Author: Engineering Technical Report Version: 1.0 Domain: Roblox Client-Server Architecture, Character Rig Manipulation Abstract The manipulation of the R15 avatar rig’s scale properties (Height, Width, HeadSize, Proportions) via a Graphical User Interface (GUI) presents a unique set of challenges in a Filtering Enabled (FE) environment. This paper dissects the architectural requirements for an FE R15 Size Gui Script , moving beyond basic slider-value binding. We analyze the replication boundary between client (view/modeling) and server (physics/hitbox), propose a delta-compression model for size changes to reduce network overhead, and evaluate methods for mitigating common exploits such as speed-hacking via size manipulation. A reference implementation pattern using RemoteEvents and attribute-based persistence is provided. 1. Introduction Roblox’s R15 character rig is defined by a hierarchical skeleton of Motor6D joints. While client-side visual scaling is trivial, applying persistent, physics-accurate size changes that other players can see requires strict adherence to Filtering Enabled (FE) rules. A naive local script will only change the user’s local perception. A server-side script lacks direct access to the client’s UI input.
[ |S_current - S_requested| \leq \epsilon_max_delta \times \Delta_t ]
Let ( S_desired ) be the user’s target scale factor (e.g., 1.0 to 3.0). The server must compute the scale for part ( p ): FE R15 Size Gui Script
local remoteEvent = ReplicatedStorage:WaitForChild("ScaleCharacter") local slider = script.Parent.Slider local debounce = false slider:GetPropertyChangedSignal("Value"):Connect(function(val) if not debounce then debounce = true remoteEvent:FireServer(val) -- Send only final value, not intermediate task.wait(0.1) debounce = false end end)
Where ( \Delta_\texttype ) is a proportion offset for parts like Head vs Torso . Author: Engineering Technical Report Version: 1
The Humanoid property HipHeight must be updated first, as it determines the character's ground collision and stepping height. A mathematical error in the order of operations (applying part scale before hip height) results in floating or clipping characters.
[ \textScale p = S base \times (1 + \Delta_\texttype) ] When leg size increases
Where ( \epsilon_max_delta ) is the maximum allowed change per frame (e.g., 0.05 per second). This prevents instantaneous jumps from 1.0 to 10.0. When leg size increases, the default WalkSpeed should be inversely scaled to prevent velocity exploits: [ \textNewWalkSpeed = \frac\textBaseWalkSpeed\sqrtS_legs ] 4.3 Collision Padding For every scaled part, the server must verify that part.CanCollide = true and that part.Size does not exceed 2 * character.Torso.Size . Implement a ResetSize function triggered if part size exceeds a static bound. 5. GUI Design for Performance The GUI script must manage rendering overhead. Using UIGradient and live-updating TextBox elements causes significant OnPropertyChanged firings.