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@ -130,7 +130,7 @@ export class Load3D {
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engine = this.engine!
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const mapName = "Rock"
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scene.useRightHandedSystem = true;//计算导航，使用右手坐标系，与cocos匹配
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// scene.useRightHandedSystem = true;//计算导航，使用右手坐标系，与cocos匹配
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const meshes = await this.agent.loadMap(`./3d/model/${mapName}.glb`, scene)
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this.envLight = this.light.createEnvLight(scene)
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this.topLight = this.light.createDirectionalLight(scene)
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@ -1,17 +1,18 @@
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import * as BABYLON from '@babylonjs/core/Legacy/legacy'
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import Recast from 'recast-detour'
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import { saveAs } from 'file-saver';
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import * as BABYLON from "@babylonjs/core/Legacy/legacy";
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import Recast from "recast-detour";
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import { saveAs } from "file-saver";
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export class PlayerAgent {
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// private navMeshAgent: BABYLON.ICrowd | null = null
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private navigationPlugin: BABYLON.RecastJSPlugin | null = null
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private meshInfo: any = null
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private maps: Map<string, any> = new Map<string, any>()
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private mapName: string = ""
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private navigationPlugin: BABYLON.RecastJSPlugin | null = null;
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private meshInfo: any = null;
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private maps: Map<string, BABYLON.INavMeshParameters> = new Map<
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string,
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BABYLON.INavMeshParameters
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>();
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private mapName: string = "";
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constructor() {
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this.maps.set("SD_V2", {
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borderSize: 2, //高度场周围不可导航边框的大小。
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cs: 0.11, //xz平面单元格大小
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ch: 0.01, //y轴单元格大小
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@ -28,9 +29,9 @@ export class PlayerAgent {
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maxVertsPerPoly: 6, //过程中生成的多边形所允许的最大顶点数
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detailSampleDist: 6, //设置生成细节网格时使用的采样距离（仅适用于高度详细信息。）
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detailSampleMaxError: 1, //细节网格表面应偏离高度场数据的最大距离。（仅适用于高度详细信息。）
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})
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tileSize: 16,//瓦片尺寸
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});
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this.maps.set("Pyramid", {
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borderSize: 2, //高度场周围不可导航边框的大小。
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cs: 0.01, //xz平面单元格大小
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ch: 0.01, //y轴单元格大小
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@ -47,9 +48,9 @@ export class PlayerAgent {
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maxVertsPerPoly: 6, //过程中生成的多边形所允许的最大顶点数
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detailSampleDist: 6, //设置生成细节网格时使用的采样距离（仅适用于高度详细信息。）
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detailSampleMaxError: 1, //细节网格表面应偏离高度场数据的最大距离。（仅适用于高度详细信息。）
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})
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tileSize: 16,//瓦片尺寸
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});
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this.maps.set("Rock", {
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borderSize: 2, //高度场周围不可导航边框的大小。
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cs: 0.05, //xz平面单元格大小
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ch: 0.05, //y轴单元格大小
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@ -66,10 +67,14 @@ export class PlayerAgent {
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maxVertsPerPoly: 6, //过程中生成的多边形所允许的最大顶点数
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detailSampleDist: 6, //设置生成细节网格时使用的采样距离（仅适用于高度详细信息。）
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detailSampleMaxError: 1, //细节网格表面应偏离高度场数据的最大距离。（仅适用于高度详细信息。）
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})
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tileSize: 16,//瓦片尺寸
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});
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}
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public loadMap(modelPath: string, scene: BABYLON.Scene): Promise<Array<BABYLON.AbstractMesh>> {
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public loadMap(
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modelPath: string,
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scene: BABYLON.Scene
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): Promise<Array<BABYLON.AbstractMesh>> {
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// scene.debugLayer.show({
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// embedMode: true,
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// showExplorer: true,
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@ -77,35 +82,37 @@ export class PlayerAgent {
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// handleResize: true,
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// })//启用场景调试界面
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return new Promise((resolve) => {
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BABYLON.ImportMeshAsync(
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modelPath,
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scene
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).then(result => {
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resolve(result.meshes)
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})
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})
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BABYLON.ImportMeshAsync(modelPath, scene).then((result) => {
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resolve(result.meshes);
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});
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});
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}
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public async createAgent(mapName: string, scene: BABYLON.Scene, meshes: Array<BABYLON.Mesh>) {
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public async createAgent(
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mapName: string,
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scene: BABYLON.Scene,
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meshes: Array<BABYLON.Mesh>
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) {
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if (!this.maps.has(mapName)) {
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return
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return;
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}
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this.mapName = mapName
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const recast = await Recast()
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this.mapName = mapName;
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const recast = await Recast();
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this.navigationPlugin = new BABYLON.RecastJSPlugin(recast);
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const parameters = this.maps.get(mapName)
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const parameters = this.maps.get(mapName)!;
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this.navigationPlugin.createNavMesh(meshes, parameters);
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const extend = this.calculateTotalBound(meshes).extendSizeWorld
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const extend = this.calculateTotalBound(meshes).extendSizeWorld;
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// this.meshInfo = {
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// extend: { x: extend.x, y: extend.z, z: extend.y }, //y,z 坐标对换，才和cocos里对的上
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// };
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this.meshInfo = {
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extend: { x: extend.x, y: extend.z, z: extend.y }//y,z 坐标对换，才和cocos里对的上
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}
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extend: { x: extend.x, y: extend.y, z: extend.z }, //正常坐标
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};
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// navigationPlugin.buildFromNavmeshData(navigationPlugin.getNavmeshData())
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// const poses = this.navigationPlugin.computePathSmooth(new BABYLON.Vector3(0, 0, 0), new BABYLON.Vector3(1, 0, 1))
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// console.log(poses)
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// this.navMeshAgent = navigationPlugin.createCrowd(10, 0.5, scene)
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@ -127,8 +134,6 @@ export class PlayerAgent {
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// // 导航至目标点（自动寻找最近可行走点）
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// this.navMeshAgent.agentGoto(playerAgentIndex, new BABYLON.Vector3(1, 0, 1));
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const navmeshdebug = this.navigationPlugin.createDebugNavMesh(scene);
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const matdebug = new BABYLON.StandardMaterial("matdebug", scene);
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matdebug.backFaceCulling = false; //启用双面材质
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@ -136,26 +141,36 @@ export class PlayerAgent {
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matdebug.alpha = 0.5;
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navmeshdebug.material = matdebug;
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// scene.getEngine().stopRenderLoop()
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}
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private getMinAMaxPosExtend(mesh: BABYLON.Mesh): BABYLON.Vector3[] {
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const bound = mesh.getBoundingInfo()
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const absPos = mesh.absolutePosition
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const extendSize = bound.boundingBox.extendSize
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extendSize.set(extendSize.x * mesh.scaling.x, extendSize.y * mesh.scaling.y, extendSize.z * mesh.scaling.z)
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const min = new BABYLON.Vector3(absPos.x - extendSize.x, absPos.y - extendSize.y, absPos.z - extendSize.z)
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const max = new BABYLON.Vector3(absPos.x + extendSize.x, absPos.y + extendSize.y, absPos.z + extendSize.z)
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return [min, max]
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const bound = mesh.getBoundingInfo();
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const absPos = mesh.absolutePosition;
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const extendSize = bound.boundingBox.extendSize;
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extendSize.set(
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extendSize.x * mesh.scaling.x,
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extendSize.y * mesh.scaling.y,
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extendSize.z * mesh.scaling.z
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);
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const min = new BABYLON.Vector3(
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absPos.x - extendSize.x,
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absPos.y - extendSize.y,
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absPos.z - extendSize.z
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);
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const max = new BABYLON.Vector3(
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absPos.x + extendSize.x,
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absPos.y + extendSize.y,
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absPos.z + extendSize.z
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);
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return [min, max];
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}
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private calculateTotalBound(meshes: BABYLON.Mesh[]): BABYLON.BoundingBox {
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let min = new BABYLON.Vector3(Infinity, Infinity, Infinity);
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let max = new BABYLON.Vector3(-Infinity, -Infinity, -Infinity);
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meshes.forEach(mesh => {
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meshes.forEach((mesh) => {
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const loc = this.getMinAMaxPosExtend(mesh);
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min = BABYLON.Vector3.Minimize(min, loc[0]);
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max = BABYLON.Vector3.Maximize(max, loc[1]);
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@ -165,15 +180,20 @@ export class PlayerAgent {
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}
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public exportNavDataToFileDownload() {
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const data = this.navigationPlugin!.getNavmeshData()
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saveAs(new Blob([data], {
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const data = this.navigationPlugin!.getNavmeshData();
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saveAs(
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new Blob([data as unknown as BlobPart], {
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type: "application/octet-stream",
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}), `${this.mapName}.txt`)
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}),
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`${this.mapName}.txt`
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);
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const meshInfoJson = JSON.stringify(this.meshInfo)
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saveAs(new Blob([meshInfoJson], {
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type: "application/json",
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}), `${this.mapName}_info.json`)
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// const meshInfoJson = JSON.stringify(this.meshInfo);
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// saveAs(
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// new Blob([meshInfoJson], {
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// type: "application/json",
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// }),
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// `${this.mapName}_info.json`
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// );
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}
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}
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