Sable: Sure Footing

A tiny NeoForge 1.21.1 mod for Sable that keeps you moving with a contraption while you jump, so you land where you took off — including on rotating platforms. | What | Side | How | | --- | --- | --- | | **You** (jumping, walking) | Client | Carry through jump arcs + frame-rotate velocity | | **Non-player entities** (item drops, XP orbs, mobs, boats…) | Server | Same carry state machine, plus tracking is seeded when an entity spawns over a contraption (dropped items pop upward and would otherwise never catch a fast deck). Projectiles are excluded — Sable already gives them launch velocity, and frame-locking would bend their flight. | | **Particles** (smoke, flames, block breaking…) | Client | Sable frame-locks particles but releases them after 0.5 blocks of drift with a one-shot linear velocity — rising smoke gets flung tangentially. We re-anchor tracked particles every tick while they stay near the contraption. | On a server without the mod, the player and particle fixes still work for clients that have it; the entity fix needs the mod on the server. ## Config (`config/surefooting-client.toml`) | Option | Default | Meaning | | --- | --- | --- | | `enabled` | `true` | Toggle the fix | | `rotate_jump_velocity` | `true` | Rotate your airborne velocity with the sub-level's frame, so a jump aimed across a spinning platform lands where you aimed | | `rotate_ground_velocity` | `true` | Rotate your walking momentum with the frame too, cancelling most of the sideways (Coriolis-like) pull when moving on a fast spinner | | `jump_rotation_strength` | `1.16` | Multiplier on the airborne rotation; 1.0 aligns to the frame but trails it slightly while your velocity is applied, values above add lead so cross-jumps stay accurate at any constant spin rate (default tuned in-game) | | `ground_rotation_strength` | `2.25` | Multiplier on the grounded rotation; higher values also compensate per-step lag on fast spinners (tuned in-game — 2.2–2.3 walks straight), lower toward 1.0 if you curl into the spin | | `carry_timeout_ticks` | `60` | Max airborne ticks to stay in the contraption's frame | | `exit_distance_blocks` | `4.0` | Stop carrying once this far outside the sub-level's bounds | | `anchor_particles` | `true` | Keep particles anchored to the contraption they spawned on while they stay near it | | `debug_logging` | `false` | Log carry transitions and per-jump landing offsets |