64 lines
1.9 KiB
JavaScript
64 lines
1.9 KiB
JavaScript
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import * as THREE from "three";
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import { BasePart } from "./BasePart.js";
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export class LerpedBasePart extends BasePart { // Extends BasePart to add smooth interpolation for networked parts
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constructor() {
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super();
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this.ClassName = "LerpedBasePart"; // 👈 Roblox-style ClassName
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this._lastReplicatedState = null;
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this._nextReplicatedState = null;
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}
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// Called when replication data arrives from the server
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OnReplicated() {
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// Keep old state to interpolate from
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this._lastReplicatedState = this._nextReplicatedState;
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// Store new replication state
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this._nextReplicatedState = {
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pos: this.Position.clone(),
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quat: new THREE.Quaternion().setFromEuler(this.Orientation),
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time: performance.now(),
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};
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// Apply anchored state from server
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this._applyAnchoredState?.();
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this.updateSizes(); // In case Size changed
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}
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// Smooth visual updates
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updateVisual(dt) {
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// Don’t lerp anchored parts — they don’t move
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if (this.Anchored) {
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this.mesh.position.copy(this.Position);
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this.mesh.quaternion.setFromEuler(this.Orientation);
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return;
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}
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if (this._nextReplicatedState && this._lastReplicatedState) {
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// Interpolate between last and next states
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const now = performance.now();
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const t = Math.min(
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(now - this._lastReplicatedState.time) / 100, // ~10Hz replication → 100ms
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1
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);
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this.mesh.position.lerpVectors(
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this._lastReplicatedState.pos,
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this._nextReplicatedState.pos,
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t
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);
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this.mesh.quaternion.slerpQuaternions(
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this._lastReplicatedState.quat,
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this._nextReplicatedState.quat,
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t
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);
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} else {
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// Fallback to default behavior
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this.mesh.position.copy(this.body.position);
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this.mesh.quaternion.copy(this.body.quaternion);
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console.warn("LerpedBasePart: No replication data yet, using physics state.");
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}
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}
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}
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