Better Auto-Jump

A Minecraft Fabric mod that replaces and vastly improves the vanilla auto-jump system. Client-side only.

Features

• Improved Auto-Jump -- Predicts collisions in the direction of movement and automatically jumps over blocks up to a configurable height. Accounts for the Jump Boost potion effect and respects an angle threshold so you only jump over blocks in your general path.
• Edge Jumping (Parkour Helper) -- Detects when you're approaching the edge of a block while moving forward and triggers a jump just before the edge. (Disabled by default, enable in mod's settings)

Configuration

Edit <game_dir>/config/better-auto-jump.json manually, or use the Mod Menu GUI (recommended). The GUI offers:

• Master Toggle -- Enable/disable the entire mod.
• Obstacle Jump / Edge Jump -- Individual feature toggles.
• Preset Selector -- Switch between built-in and saved custom presets.
• Variance / Cooldown -- Random tick delay (0–5) and minimum ticks (1–10+) between edge jumps.
• Advanced Settings -- Fine-tune all detection parameters and save custom presets.

Edge Detection Parameters

Parameter	Default	Description
Sprint Distance	2.0	Max scan distance when sprinting
Walk Distance	1.5	Max scan distance when walking
Step Distance	0.35	Distance between scan samples
Start Distance	0.3	Distance from player to start scanning
Scan Radius	0.3	Horizontal radius of the scan area
Vertical Offset	0.05	Vertical offset for the scan area
Min Velocity	0.1	Minimum player speed to trigger
Solid Min	0.001	Min ground height at feet (edge if below)
Solid Max	0.6	Max ground height at feet

Obstacle Detection Parameters

Parameter	Default	Description
Jump Height	1.2	Max block height to auto-jump
Prediction Mult	6.0	How far ahead to check for collisions
BPT Clamp Max	0.8	Max blocks-per-tick clamp
BPT Slow Threshold	0.2	Slow movement threshold
BPT Slow Multiplier	0.7	Multiplier applied during slow movement
Angle Threshold	30.0	Max angle between movement and obstacle