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MazeMesh

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Adrien MALINGREY 2023-06-04 03:13:39 +02:00
parent a7db52aa27
commit 6244de7429
1 changed files with 42 additions and 40 deletions
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90
main.js
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@ -12,50 +12,59 @@ import { GUI } from 'three/addons/libs/lil-gui.module.min.js';
import { Water } from 'three/addons/objects/Water.js';
import { Sky } from 'three/addons/objects/Sky.js';
const DIRECTIONS = [
class MazeMesh extends THREE.InstancedMesh {
constructor( geometry, material, width, length) {
super( geometry, material, width*length - 2 )
this.length = length
this.width = width
this.map = new Array(length).fill().map(() => new Array(width).fill(1))
this.start = new THREE.Vector3(width/2, .1, length/2)
this.exit = new THREE.Vector3(Math.floor(width/2), 0, 1)
this.count = length * width - 2
this.dig(this.exit)
this.dig(new THREE.Vector3(Math.floor(width/2), 0, 0))
this.build ( this.exit )
let matrix = new THREE.Matrix4()
let i=0
this.map.forEach((row, z) => {
row.forEach((isWall, x) => {
if (isWall) {
matrix.setPosition(x + .5, 0.5, z + .5)
this.setMatrixAt( i, matrix );
i++
}
})
})
}
dig(position) {
this.map[position.z][position.x] = 0
}
static DIRECTIONS = [
new THREE.Vector3( 0, 0, -1),
new THREE.Vector3( 0, 0, 1),
new THREE.Vector3(-1, 0, 0),
new THREE.Vector3( 1, 0, 0),
]
class Labyrinthe extends Array {
constructor(width, length) {
super()
for (let row=0; row < length; row++) {
this.push(new Array(width).fill(1))
}
this.length = length
this.width = width
this.start = new THREE.Vector3(width/2, .1, length/2)
this.exit = new THREE.Vector3(Math.floor(width/2), 0, 1)
this.dig(this.exit)
this.dig(new THREE.Vector3(Math.floor(width/2), 0, 0))
this.walls = length * width - 2
this.build(this.exit)
}
]
build(position) {
for (var direction of Array.from(DIRECTIONS).sort(x => .5 - Math.random())) {
for (var direction of Array.from(this.constructor.DIRECTIONS).sort(x => .5 - Math.random())) {
var step1 = position.clone().add(direction)
var step2 = step1.clone().add(direction)
if (this.isWall(step2) == 1) {
this.dig(step1)
this.dig(step2)
this.walls -= 2
this.count -= 2
this.build(step2)
}
}
}
dig(position) {
this[position.z][position.x] = 0
}
isWall(position) {
if (0 <= position.x && position.x < this.width &&
0 <= position.z && position.z < this.length) {
return this[Math.floor(position.z)][Math.floor(position.x)]
return this.map[Math.floor(position.z)][Math.floor(position.x)]
} else {
return -1
}
@ -298,29 +307,22 @@ const wallMaterial = new THREE.MeshPhongMaterial( {
depthWrite: true
} )
const mazeMap = new Labyrinthe(mazeLength, mazeWidth)
const maze = new THREE.InstancedMesh( wallGeometry, wallMaterial, mazeMap.walls );
let matrix = new THREE.Matrix4()
const cube = new THREE.Mesh(wallGeometry)
let i=0
mazeMap.forEach((row, z) => {
row.forEach((isWall, x) => {
if (isWall) {
matrix.setPosition(x + .5, 0.5, z + .5)
maze.setMatrixAt( i, matrix );
const clone = cube.clone()
clone.position.set(x + .5, 0.5, z + .5)
worldOctree.fromGraphNode( clone )
i++
}
})
})
const maze = new MazeMesh( wallGeometry, wallMaterial, mazeLength, mazeWidth );
maze.castShadow = true;
maze.receiveShadow = true;
maze.matrixAutoUpdate = false
scene.add(maze)
camera.position.copy(mazeMap.start)
const cube = new THREE.Mesh( wallGeometry );
let matrix = new THREE.Matrix4()
for ( let i=0; i<maze.count; i++ ) {
maze.getMatrixAt( i, matrix )
const clone = cube.clone()
clone.position.setFromMatrixPosition( matrix )
worldOctree.fromGraphNode( clone )
}
camera.position.copy( maze.start );
// debug