ja_jp Vehicle and Riding Physics

乗り物と騎乗の物理演算

このページでは、ボート、トロッコ、馬への騎乗時やエリトラ飛行時の速度測定の仕組みを解説します。

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📊 Vehicle Physics Infobox

Vehicle / State	Velocity Source	Typical Speed Range (b/s)	Peak Speed (b/s)
Vanilla Boat (Water)	Boat Entity	$8.00 - 9.00\text{ b/s}$	$9.00\text{ b/s}$
Boat on Blue Ice	Boat Entity	$40.00 - 70.00\text{ b/s}$	$72.70\text{ b/s}$
Minecart (Powered Rail)	Minecart Entity	$8.00\text{ b/s}$	$8.00\text{ b/s}$
Horse (Max Stats)	Horse Entity	$14.50 - 14.75\text{ b/s}$	$14.75\text{ b/s}$
Pig (Carrot on a Stick)	Pig Entity	$4.20 - 5.00\text{ b/s}$	$6.80\text{ b/s}$
Elytra Glide / Dive	Player Entity	$15.00 - 45.00\text{ b/s}$	$67.50\text{ b/s}$

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🏎 Camera Entity Velocity Resolution

Entity entity = client.getCameraEntity();
if (entity == null) {
    entity = client.player;
}
Vec3 knownSpeed = entity.getKnownSpeed();

• Riding Mounts: client.getCameraEntity() automatically resolves to the ridden vehicle entity, extracting the exact server/client synced velocity vector of the mount.
• Spectator Mode: When spectating another player or entity, Speedometer displays the target entity's real-time movement velocity.

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🔗 関連ページ

• 速度計算の数学とベクトル
• カメラとエンティティの追跡