Scaffold

Overview

Scaffold automatically places blocks under your feet as you walk, allowing you to bridge across gaps, build quickly, and create structures without manually placing each block. It’s one of the most essential modules for building and PvP.

Features

Automatic block placement while walking
Tower mode for vertical building
Multiple SafeWalk modes to prevent falling
Expand mode for bridging in all directions
Downwards mode for placing below you
Block counter with visual display
Rotation options for anti-cheat bypass
Helps place multiple blocks ahead

Settings

Core Settings

Event

enum

default:"Post"

When to place blocks during the tick

Post: After player movement (more stable)
Pre: Before player movement (faster)

Mode

enum

default:"Silent"

How to switch to block slot

Silent: Switches invisibly (server-side only)
Swap: Visually changes hotbar slot

Tower

enum

default:"None"

Vertical building mode

None: Disabled
Normal: Tower up while standing still and jumping
Move: Tower up even while moving

Limit

boolean

default:"false"

Limits tower height to bypass anti-cheat (applies brief downward motion every 1.5s)

Grim

boolean

default:"false"

GrimAC compatibility mode - looks down at 90 degrees when no blocks can be placed

Rotate

boolean

default:"false"

Rotates your head towards the block being placed

Swing

boolean

default:"false"

Shows arm swing animation when placing blocks

Downwards

boolean

default:"false"

When sneaking, places blocks 2 layers below instead of 1

SafeWalk Settings

SafeWalk

enum

default:"None"

Prevents walking off edges

None: Disabled (you can fall)
Soft: Adjusts movement to stay on blocks
Strong: Forces sneak at edges

Expand Settings

Expand

enum

default:"Off"

Places blocks in your movement direction

Off: Only places directly below
On: Always expands in movement direction
Dynamic: Only expands while jumping

Timing

Place Delay

number

default:"0"

Delay between block placements in milliseconds (0-1000ms)Higher values are safer for anti-cheat but slower

Visual Settings

Block Counter

enum

default:"None"

Shows remaining block count

None: Hidden
Text: Shows count as text
Bar: Shows colored progress bar

Render

boolean

default:"true"

Renders placed block positions with fade effect

How It Works

Block Detection

Scaffold continuously checks if the block below you is air or replaceable

Placement Target

Finds the best position and direction to place a block

Checks directly below
Uses “helping blocks” if needed (places support blocks first)
Expands in movement direction if enabled

Rotation (Optional)

If Rotate is enabled, turns your head toward the placement position

Place Block

Switches to block slot (Silent or Swap) and places the block

SafeWalk (Optional)

Adjusts your movement to prevent walking off edges

Tower Mode

Tower mode allows you to build straight up:

Normal Tower
Move Tower

How to Use

Enable Tower: Normal
Stand still (no movement keys)
Hold jump (spacebar)
Scaffold automatically places blocks below and boosts you up

Mechanics:

// Located at: player/Scaffold.java:274-302
if (mc.options.jumpKey.isPressed() && !mc.world.getBlockState(under).isReplaceable()) {
    if (!PlayerUtils.isMoving() || tower.getValue().equals("Move")) {
        if (mc.player.getVelocity().y != 0.42F) {
            PlayerUtils.setMotionY(0.42f);  // Jump boost
        }
        
        // Bypasses tower check on some servers
        if (towerTimer.isPassed(1500) && limit.getValue()) {
            PlayerUtils.setMotionY(-0.28f);  // Brief downward motion
            towerTimer.resetDelay();
        }
        
        PlayerUtils.setMotionXZ(mc.player.getVelocity().x * 0.9, mc.player.getVelocity().z * 0.9);
    }
}

SafeWalk Modes

Soft SafeWalk

Adjusts your movement vector to prevent walking off edges:

Vec2f safeMove = PlayerUtils.safeWalk(event.getX(), event.getZ());
event.setX(safeMove.x);
event.setZ(safeMove.y);

Pros:

Natural movement
No visible sneak animation
Works while sprinting

Cons:

May not catch all edge cases

Strong SafeWalk

Forces sneak at edges:

isSneaking = PlayerUtils.canSneak(safeMove);
mc.options.sneakKey.setPressed(isSneaking);

Pros:

Guaranteed edge safety
Prevents any fall-offs
More reliable

Cons:

Visible sneak animation
Slower movement speed

Expand Mode

Expand allows bridging in all directions:

Directional Logic
Dynamic Expand

// Located at: player/Scaffold.java:603-660
// Forward
if (mc.options.forwardKey.isPressed() && !mc.options.backKey.isPressed()) {
    BlockPos forwardPos = underPos.offset(mc.player.getHorizontalFacing());
    if (mc.world.getBlockState(forwardPos).isReplaceable()) {
        return forwardPos;
    }
}

// Backward
else if (mc.options.backKey.isPressed() && !mc.options.forwardKey.isPressed()) {
    BlockPos backPos = underPos.offset(mc.player.getHorizontalFacing().getOpposite());
    // ...
}

// Right/Left strafe
// ...

Only expands while jumping:

if (expand.getValue().equals("Off") || 
    (expand.getValue().equals("Dynamic") && !mc.options.jumpKey.isPressed()))
    return null;

Use Case:

Normal walking: Places only directly below
While jumping: Places in movement direction
More controlled bridging

Downwards Mode

Places blocks 2 layers below when sneaking:

// Located at: player/Scaffold.java:607-612
if (!canSneak()) {
    underPos = underPos.down();  // One extra layer down
}

Usage:

Enable Downwards
Hold sneak while walking
Places blocks 2 layers below your feet
Useful for creating lower platforms

Block Counter Display

Text Counter
Bar Counter

Simple text display showing block count:

Displays number of blocks remaining
Shows item icon with count
Color-coded: Red (low) → Yellow → Green (full)

Block Selection

Scaffold intelligently selects valid blocks:

// Located at: player/Scaffold.java:460-478
private boolean isItemValid(Item item) {
    if (item instanceof BlockItem itemBlock) {
        if (!blacklistedBlocks.contains(itemBlock.getBlock())) {
            BlockState baseState = itemBlock.getBlock().getDefaultState();
            if (!baseState.isReplaceable()) {
                VoxelShape voxelShape = baseState.getCollisionShape(mc.world, outOfBounds);
                return voxelShape.equals(VoxelShapes.fullCube());
            }
        }
    }
    return false;
}

Blacklisted Blocks

Scaffold won’t use these blocks:

All shulker boxes (prevent accidental placement)
Falling blocks (gravel, sand, anvils)
Stairs (not full cubes)
Pistons and redstone blocks
Cobwebs, hoppers, chorus flowers

Configuration Presets

Event: Post
Mode: Silent
Tower: None
Rotate: false
Swing: false
SafeWalk: Soft
Expand: Dynamic
Place Delay: 0

→ Fast bridging
→ Expand only when jumping
→ No rotation (looks natural)

Advanced Techniques

Helping Blocks

When direct placement is impossible, Scaffold places “helping blocks”:

// Located at: player/Scaffold.java:516-557
public Pair.BlockPair getHelping(BlockPos pos) {
    // First pass: Check immediate neighbors
    for (Direction facing : Direction.values()) {
        BlockPos p = pos.offset(facing);
        Direction f = BlockUtils.getFacing(p);
        if (f != null) return new Pair.BlockPair(p, f);
    }
    
    // Second pass: Check neighbors of neighbors
    for (Direction facing : Direction.values()) {
        BlockPos p = pos.offset(facing);
        if (mc.world.getBlockState(p).isReplaceable()) {
            for (Direction direction1 : Direction.values()) {
                BlockPos neighbor1 = p.offset(direction1);
                if (!mc.world.getBlockState(neighbor1).isReplaceable()) {
                    Direction f = BlockUtils.getFacing(neighbor1);
                    if (f != null) return new Pair.BlockPair(neighbor1, f);
                }
            }
        }
    }
}

This allows bridging over large gaps by placing intermediate support blocks.

Jump Timing

For fastest bridging:

Enable Expand: Dynamic
Sprint + Jump continuously
Scaffold places ahead while jumping
Walk normally while on ground

This creates a rhythm: Jump (expand) → Walk (normal) → Jump (expand)

Tower + Scaffold

Combine tower with forward movement:

Set Tower to Move
Set Expand to On
Hold W + Space
Creates diagonal tower

Best Practices

Block Management

Use AutoReplenish to automatically refill blocks in your hotbar

SafeWalk

Always use at least Soft SafeWalk to prevent accidental falls

Place Delay

Increase delay on strict anti-cheat servers (50-100ms)

Practice

Practice tower timing in a safe area before PvP

Tower mode (especially Move) and fast bridging may be detected by advanced anti-cheat systems. Adjust settings based on your server.

Troubleshooting

Blocks Not Placing

Check if you have valid blocks in hotbar (see blacklist)
Ensure block count > 0
Try increasing Place Delay
Disable other modules that may interfere

Tower Not Working

Must stand still for Normal tower
Must be on solid ground (not replaceable)
Check if Limit is causing issues
Disable other movement modules

SafeWalk Not Working

Try switching from Soft to Strong
Ensure you’re moving (SafeWalk only active when moving)
Check if Downwards mode is interfering

Getting Kicked by Anti-Cheat

Enable Rotate
Increase Place Delay to 50-100ms
Enable Limit for tower
Use Grim mode for GrimAC
Switch Mode from Swap to Silent

AutoReplenish: Automatically refills blocks
FastPlace: Places blocks faster
NoSlow: Move at full speed while placing
Sprint: Auto sprint while scaffolding

Combat

Movement

Render

Misc

Player

Overview

Features

Settings

Core Settings

SafeWalk Settings

Expand Settings

Timing

Visual Settings

How It Works

Tower Mode

How to Use

Advanced Tower

SafeWalk Modes

Expand Mode

Downwards Mode

Block Counter Display

Block Selection

Blacklisted Blocks

Configuration Presets

Advanced Techniques

Best Practices

Block Management

SafeWalk

Place Delay

Practice

Troubleshooting

Build docs developers (and LLMs) love

Combat

Movement

Render

Misc

Player

​Overview

​Features

​Settings

​Core Settings

​SafeWalk Settings

​Expand Settings

​Timing

​Visual Settings

​How It Works

​Tower Mode

​How to Use

​Advanced Tower

​SafeWalk Modes

​Expand Mode

​Downwards Mode

​Block Counter Display

​Block Selection

​Blacklisted Blocks

​Configuration Presets

​Advanced Techniques

​Best Practices

Block Management

SafeWalk

Place Delay

Practice

​Troubleshooting

​Related Modules

Build docs developers (and LLMs) love

Overview

Features

Settings

Core Settings

SafeWalk Settings

Expand Settings

Timing

Visual Settings

How It Works

Tower Mode

How to Use

Advanced Tower

SafeWalk Modes

Expand Mode

Downwards Mode

Block Counter Display

Block Selection

Blacklisted Blocks

Configuration Presets

Advanced Techniques

Best Practices

Troubleshooting

Related Modules