Better Auto-Jump

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 |