/
terrain.ts
1978 lines (1675 loc) · 59.4 KB
/
terrain.ts
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/*
Copyright (c) 2020 Xiamen Yaji Software Co., Ltd.
https://www.cocos.com/
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated engine source code (the "Software"), a limited,
worldwide, royalty-free, non-assignable, revocable and non-exclusive license
to use Cocos Creator solely to develop games on your target platforms. You shall
not use Cocos Creator software for developing other software or tools that's
used for developing games. You are not granted to publish, distribute,
sublicense, and/or sell copies of Cocos Creator.
The software or tools in this License Agreement are licensed, not sold.
Xiamen Yaji Software Co., Ltd. reserves all rights not expressly granted to you.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
*/
/**
* @packageDocumentation
* @module terrain
*/
import { ccclass, disallowMultiple, executeInEditMode, help, visible, type, serializable, editable, disallowAnimation } from 'cc.decorator';
import { builtinResMgr } from '../core/builtin';
import { RenderableComponent } from '../core/components/renderable-component';
import { EffectAsset, Texture2D } from '../core/assets';
import { Filter, PixelFormat, WrapMode } from '../core/assets/asset-enum';
import { Material } from '../core/assets/material';
import { RenderingSubMesh } from '../core/assets/rendering-sub-mesh';
import { Component } from '../core/components';
import { isValid } from '../core/data/object';
import { director } from '../core/director';
import { AttributeName, BufferUsageBit, Format, MemoryUsageBit, PrimitiveMode } from '../core/gfx/define';
import { Device, Attribute, Buffer, BufferInfo } from '../core/gfx';
import { clamp, Rect, Size, Vec2, Vec3, Vec4 } from '../core/math';
import { MacroRecord } from '../core/renderer/core/pass-utils';
import { scene } from '../core/renderer';
import { Root } from '../core/root';
import { PrivateNode } from '../core/scene-graph/private-node';
import { HeightField } from './height-field';
import { legacyCC } from '../core/global-exports';
import { TerrainAsset, TerrainLayerInfo, TERRAIN_HEIGHT_BASE, TERRAIN_HEIGHT_FACTORY,
TERRAIN_BLOCK_TILE_COMPLEXITY, TERRAIN_BLOCK_VERTEX_SIZE, TERRAIN_BLOCK_VERTEX_COMPLEXITY,
TERRAIN_MAX_LAYER_COUNT, TERRAIN_HEIGHT_FMIN, TERRAIN_HEIGHT_FMAX, TERRAIN_MAX_BLEND_LAYERS } from './terrain-asset';
import { CCBoolean, CCInteger } from '../core';
const bbMin = new Vec3();
const bbMax = new Vec3();
/**
* @en Terrain info
* @zh 地形信息
*/
@ccclass('cc.TerrainInfo')
export class TerrainInfo {
/**
* @en tile size
* @zh 栅格大小
*/
@serializable
@editable
public tileSize = 1;
/**
* @en block count
* @zh 地形块的数量
*/
@serializable
@editable
public blockCount: number[] = [1, 1];
/**
* @en weight map size
* @zh 权重图大小
*/
@serializable
@editable
public weightMapSize = 128;
/**
* @en light map size
* @zh 光照图大小
*/
@serializable
@editable
public lightMapSize = 128;
/**
* @en terrain size
* @zh 地形大小
*/
public get size () {
const sz = new Size(0, 0);
sz.width = this.blockCount[0] * TERRAIN_BLOCK_TILE_COMPLEXITY * this.tileSize;
sz.height = this.blockCount[1] * TERRAIN_BLOCK_TILE_COMPLEXITY * this.tileSize;
return sz;
}
/**
* @en tile count
* @zh 栅格数量
*/
public get tileCount () {
const _tileCount = [0, 0];
_tileCount[0] = this.blockCount[0] * TERRAIN_BLOCK_TILE_COMPLEXITY;
_tileCount[1] = this.blockCount[1] * TERRAIN_BLOCK_TILE_COMPLEXITY;
return _tileCount;
}
/**
* @en vertex count
* @zh 顶点数量
*/
public get vertexCount () {
const _vertexCount = this.tileCount;
_vertexCount[0] += 1;
_vertexCount[1] += 1;
return _vertexCount;
}
}
/**
* @en Terrain layer
* @zh 地形纹理层
*/
@ccclass('cc.TerrainLayer')
export class TerrainLayer {
/**
* @en detail texture
* @zh 细节纹理
*/
@serializable
@editable
public detailMap: Texture2D|null = null;
/**
* @en normal texture
* @zh 法线纹理
*/
@serializable
@editable
public normalMap: Texture2D|null = null;
/**
* @en tile size
* @zh 平铺大小
*/
@serializable
@editable
public tileSize = 1;
/**
* @en metallic
* @zh 金属性
*/
@serializable
@editable
public metallic = 0; /* [0, 1] */
/**
* @en roughness
* @zh 粗糙度
*/
@serializable
@editable
public roughness = 1; /* [0, 1] */
}
/**
* @en Terrain renderable
* @zh 地形渲染组件
*/
class TerrainRenderable extends RenderableComponent {
public _model: scene.Model | null = null;
public _meshData: RenderingSubMesh | null = null;
public _brushMaterial: Material | null = null;
public _currentMaterial: Material | null = null;
public _currentMaterialLayers = 0;
public destroy () {
// this._invalidMaterial();
if (this._model != null) {
legacyCC.director.root.destroyModel(this._model);
this._model = null;
}
return super.destroy();
}
public _destroyModel () {
// this._invalidMaterial();
if (this._model != null) {
legacyCC.director.root.destroyModel(this._model);
this._model = null;
}
}
public _invalidMaterial () {
if (this._currentMaterial == null) {
return;
}
this._clearMaterials();
this._currentMaterial = null;
if (this._model != null) {
this._model.enabled = false;
}
}
public _updateMaterial (block: TerrainBlock, init: boolean) {
if (this._meshData == null || this._model == null) {
return;
}
const nLayers = block.getMaxLayer();
if (this._currentMaterial == null || nLayers !== this._currentMaterialLayers) {
this._currentMaterial = new Material();
this._currentMaterial.initialize({
effectAsset: block.getTerrain().getEffectAsset(),
defines: block._getMaterialDefines(nLayers),
});
if (this._brushMaterial !== null) {
const passes = this._currentMaterial.passes;
passes.push(this._brushMaterial.passes[0]);
}
if (init) {
this._model.initSubModel(0, this._meshData, this._currentMaterial);
}
this.setMaterial(this._currentMaterial, 0);
this._currentMaterialLayers = nLayers;
this._model.enabled = true;
this._model.receiveShadow = block.getTerrain().receiveShadow;
}
}
public _onMaterialModified (idx: number, mtl: Material|null) {
if (this._model == null) {
return;
}
this._onRebuildPSO(idx, mtl || this._getBuiltinMaterial());
}
protected _onRebuildPSO (idx: number, material: Material) {
if (this._model) {
this._model.setSubModelMaterial(idx, material);
}
}
protected _clearMaterials () {
if (this._model == null) {
return;
}
this._onMaterialModified(0, null);
}
private _getBuiltinMaterial () {
return builtinResMgr.get<Material>('missing-material');
}
}
/**
* @en Terrain block light map info
* @zh 地形块光照图信息
*/
@ccclass('cc.TerrainBlockLightmapInfo')
export class TerrainBlockLightmapInfo {
@serializable
@editable
public texture: Texture2D|null = null;
@serializable
@editable
public UOff = 0;
@serializable
@editable
public VOff = 0;
@serializable
@editable
public UScale = 0;
@serializable
@editable
public VScale = 0;
}
/**
* @en Terrain block
* @zh 地形块
*/
export class TerrainBlock {
private _terrain: Terrain;
private _node: PrivateNode;
private _renderable: TerrainRenderable;
private _index: number[] = [1, 1];
// private _neighbor: TerrainBlock|null[] = [null, null, null, null];
private _weightMap: Texture2D|null = null;
private _lightmapInfo: TerrainBlockLightmapInfo|null = null;
constructor (t: Terrain, i: number, j: number) {
this._terrain = t;
this._index[0] = i;
this._index[1] = j;
this._lightmapInfo = t._getLightmapInfo(i, j);
this._node = new PrivateNode('');
this._node.setParent(this._terrain.node);
this._node._objFlags |= legacyCC.Object.Flags.DontSave;
this._node.layer = this._terrain.node.layer;
this._renderable = this._node.addComponent(TerrainRenderable);
}
public build () {
const gfxDevice = director.root!.device;
// vertex buffer
const vertexData = new Float32Array(TERRAIN_BLOCK_VERTEX_SIZE * TERRAIN_BLOCK_VERTEX_COMPLEXITY * TERRAIN_BLOCK_VERTEX_COMPLEXITY);
let index = 0;
bbMin.set(Number.MAX_VALUE, Number.MAX_VALUE, Number.MAX_VALUE);
bbMax.set(Number.MIN_VALUE, Number.MIN_VALUE, Number.MIN_VALUE);
for (let j = 0; j < TERRAIN_BLOCK_VERTEX_COMPLEXITY; ++j) {
for (let i = 0; i < TERRAIN_BLOCK_VERTEX_COMPLEXITY; ++i) {
const x = this._index[0] * TERRAIN_BLOCK_TILE_COMPLEXITY + i;
const y = this._index[1] * TERRAIN_BLOCK_TILE_COMPLEXITY + j;
const position = this._terrain.getPosition(x, y);
const normal = this._terrain.getNormal(x, y);
const uv = new Vec2(i / TERRAIN_BLOCK_TILE_COMPLEXITY, j / TERRAIN_BLOCK_TILE_COMPLEXITY);
vertexData[index++] = position.x;
vertexData[index++] = position.y;
vertexData[index++] = position.z;
vertexData[index++] = normal.x;
vertexData[index++] = normal.y;
vertexData[index++] = normal.z;
vertexData[index++] = uv.x;
vertexData[index++] = uv.y;
Vec3.min(bbMin, bbMin, position);
Vec3.max(bbMax, bbMax, position);
}
}
const vertexBuffer = gfxDevice.createBuffer(new BufferInfo(
BufferUsageBit.VERTEX | BufferUsageBit.TRANSFER_DST,
MemoryUsageBit.HOST | MemoryUsageBit.DEVICE,
TERRAIN_BLOCK_VERTEX_SIZE * Float32Array.BYTES_PER_ELEMENT * TERRAIN_BLOCK_VERTEX_COMPLEXITY * TERRAIN_BLOCK_VERTEX_COMPLEXITY,
TERRAIN_BLOCK_VERTEX_SIZE * Float32Array.BYTES_PER_ELEMENT,
));
vertexBuffer.update(vertexData);
// initialize renderable
const gfxAttributes: Attribute[] = [
new Attribute(AttributeName.ATTR_POSITION, Format.RGB32F),
new Attribute(AttributeName.ATTR_NORMAL, Format.RGB32F),
new Attribute(AttributeName.ATTR_TEX_COORD, Format.RG32F),
];
this._renderable._meshData = new RenderingSubMesh([vertexBuffer], gfxAttributes,
PrimitiveMode.TRIANGLE_LIST, this._terrain._getSharedIndexBuffer());
const model = this._renderable._model = (legacyCC.director.root as Root).createModel(scene.Model);
model.createBoundingShape(bbMin, bbMax);
model.node = model.transform = this._node;
this._renderable._getRenderScene().addModel(model);
// reset weightmap
this._updateWeightMap();
// reset material
this._updateMaterial(true);
}
public rebuild () {
this._updateHeight();
this._updateWeightMap();
this._renderable._invalidMaterial();
this._updateMaterial(false);
}
public destroy () {
this._renderable._destroyModel();
if (this._node != null) {
this._node.destroy();
}
if (this._weightMap != null) {
this._weightMap.destroy();
}
}
public update () {
this._updateMaterial(false);
const useNormalMap = this._terrain.useNormalMap;
const usePBR = this._terrain.usePBR;
// eslint-disable-next-line arrow-body-style
const getDetailTex = (layer: TerrainLayer|null) => {
return layer !== null ? layer.detailMap : null;
};
const getNormalTex = (layer: TerrainLayer|null) => {
let normalTex = layer !== null ? layer.normalMap : null;
if (normalTex === null) {
normalTex = legacyCC.builtinResMgr.get('normal-texture');
}
return normalTex;
};
const mtl = this._renderable._currentMaterial;
if (mtl !== null) {
const nlayers = this.getMaxLayer();
const uvScale = new Vec4(1, 1, 1, 1);
const roughness = new Vec4(1, 1, 1, 1);
const metallic = new Vec4(0, 0, 0, 0);
if (nlayers === 0) {
if (this.layers[0] !== -1) {
const l0 = this._terrain.getLayer(this.layers[0]);
if (l0 !== null) {
uvScale.x = 1.0 / l0.tileSize;
roughness.x = l0.roughness;
metallic.x = l0.metallic;
}
mtl.setProperty('detailMap0', getDetailTex(l0));
if (useNormalMap) {
mtl.setProperty('normalMap0', getNormalTex(l0));
}
} else {
mtl.setProperty('detailMap0', legacyCC.builtinResMgr.get('default-texture'));
if (useNormalMap) {
mtl.setProperty('normalMap0', legacyCC.builtinResMgr.get('normal-texture'));
}
}
} else if (nlayers === 1) {
const l0 = this._terrain.getLayer(this.layers[0]);
const l1 = this._terrain.getLayer(this.layers[1]);
if (l0 !== null) {
uvScale.x = 1.0 / l0.tileSize;
roughness.x = l0.roughness;
metallic.x = l0.metallic;
}
if (l1 !== null) {
uvScale.y = 1.0 / l1.tileSize;
roughness.y = l1.roughness;
metallic.y = l1.metallic;
}
mtl.setProperty('weightMap', this._weightMap);
mtl.setProperty('detailMap0', getDetailTex(l0));
mtl.setProperty('detailMap1', getDetailTex(l1));
if (useNormalMap) {
mtl.setProperty('normalMap0', getNormalTex(l0));
mtl.setProperty('normalMap1', getNormalTex(l1));
}
} else if (nlayers === 2) {
const l0 = this._terrain.getLayer(this.layers[0]);
const l1 = this._terrain.getLayer(this.layers[1]);
const l2 = this._terrain.getLayer(this.layers[2]);
if (l0 !== null) {
uvScale.x = 1.0 / l0.tileSize;
roughness.x = l0.roughness;
metallic.x = l0.metallic;
}
if (l1 !== null) {
uvScale.y = 1.0 / l1.tileSize;
roughness.y = l1.roughness;
metallic.y = l1.metallic;
}
if (l2 !== null) {
uvScale.z = 1.0 / l2.tileSize;
roughness.z = l2.roughness;
metallic.z = l2.metallic;
}
mtl.setProperty('weightMap', this._weightMap);
mtl.setProperty('detailMap0', getDetailTex(l0));
mtl.setProperty('detailMap1', getDetailTex(l1));
mtl.setProperty('detailMap2', getDetailTex(l2));
if (useNormalMap) {
mtl.setProperty('normalMap0', getNormalTex(l0));
mtl.setProperty('normalMap1', getNormalTex(l1));
mtl.setProperty('normalMap2', getNormalTex(l2));
}
} else if (nlayers === 3) {
const l0 = this._terrain.getLayer(this.layers[0]);
const l1 = this._terrain.getLayer(this.layers[1]);
const l2 = this._terrain.getLayer(this.layers[2]);
const l3 = this._terrain.getLayer(this.layers[3]);
if (l0 !== null) {
uvScale.x = 1.0 / l0.tileSize;
roughness.x = l0.roughness;
metallic.x = l0.metallic;
}
if (l1 !== null) {
uvScale.y = 1.0 / l1.tileSize;
roughness.y = l1.roughness;
metallic.y = l1.metallic;
}
if (l2 !== null) {
uvScale.z = 1.0 / l2.tileSize;
roughness.z = l2.roughness;
metallic.z = l2.metallic;
}
if (l3 !== null) {
uvScale.w = 1.0 / l3.tileSize;
roughness.w = l3.roughness;
metallic.w = l3.metallic;
}
mtl.setProperty('weightMap', this._weightMap);
mtl.setProperty('detailMap0', getDetailTex(l0));
mtl.setProperty('detailMap1', getDetailTex(l1));
mtl.setProperty('detailMap2', getDetailTex(l2));
mtl.setProperty('detailMap3', getDetailTex(l3));
if (useNormalMap) {
mtl.setProperty('normalMap0', getNormalTex(l0));
mtl.setProperty('normalMap1', getNormalTex(l1));
mtl.setProperty('normalMap2', getNormalTex(l2));
mtl.setProperty('normalMap3', getNormalTex(l3));
}
}
mtl.setProperty('UVScale', uvScale);
if (usePBR) {
mtl.setProperty('roughness', roughness);
mtl.setProperty('metallic', metallic);
}
if (this.lightmap !== null) {
mtl.setProperty('lightMap', this.lightmap);
mtl.setProperty('lightMapUVParam', this.lightmapUVParam);
}
}
}
public setBrushMaterial (mtl: Material|null) {
if (this._renderable._brushMaterial !== mtl) {
this._renderable._brushMaterial = mtl;
this._renderable._invalidMaterial();
}
}
/**
* @en valid
* @zh 是否有效
*/
get valid () {
if (this._terrain === null) {
return false;
}
const blocks = this._terrain.getBlocks();
for (let i = 0; i < blocks.length; ++i) {
if (blocks[i] === this) {
return true;
}
}
return false;
}
/**
* @en get layers
* @zh 获得纹理层索引
*/
get layers () {
return this._terrain.getBlockLayers(this._index[0], this._index[1]);
}
/**
* @en get light map
* @zh 获得光照图
*/
get lightmap () {
return this._lightmapInfo ? this._lightmapInfo.texture : null;
}
/**
* @en get light map uv parameter
* @zh 获得光照图纹理坐标参数
*/
get lightmapUVParam () {
if (this._lightmapInfo != null) {
return new Vec4(this._lightmapInfo.UOff, this._lightmapInfo.VOff, this._lightmapInfo.UScale, this._lightmapInfo.VScale);
}
return new Vec4(0, 0, 0, 0);
}
/**
* @en get terrain owner
* @zh 获得地形对象
*/
public getTerrain () {
return this._terrain;
}
/**
* @en get index
* @zh 获得地形索引
*/
public getIndex () {
return this._index;
}
/**
* @en get rect bound
* @zh 获得地形矩形包围体
*/
public getRect () {
const rect = new Rect();
rect.x = this._index[0] * TERRAIN_BLOCK_TILE_COMPLEXITY;
rect.y = this._index[1] * TERRAIN_BLOCK_TILE_COMPLEXITY;
rect.width = TERRAIN_BLOCK_TILE_COMPLEXITY;
rect.height = TERRAIN_BLOCK_TILE_COMPLEXITY;
return rect;
}
/**
* @en set layer
* @zh 设置纹理层
*/
public setLayer (index: number, layerId: number) {
if (this.layers[index] !== layerId) {
this._terrain.setBlockLayer(this._index[0], this._index[1], index, layerId);
this._renderable._invalidMaterial();
this._updateMaterial(false);
}
}
/**
* @en get layer
* @zh 获得纹理层
*/
public getLayer (index: number) {
return this.layers[index];
}
/**
* @en get max layer index
* @zh 获得最大纹理索引
*/
public getMaxLayer () {
if (this.layers[3] >= 0) {
return 3;
}
if (this.layers[2] >= 0) {
return 2;
}
if (this.layers[1] >= 0) {
return 1;
}
return 0;
}
public _getMaterialDefines (nlayers: number): MacroRecord {
return {
LAYERS: nlayers + 1,
USE_LIGHTMAP: this.lightmap !== null ? 1 : 0,
USE_NORMALMAP: this._terrain.useNormalMap ? 1 : 0,
USE_PBR: this._terrain.usePBR ? 1 : 0,
// CC_RECEIVE_SHADOW: this._terrain.receiveShadow ? 1 : 0,
};
}
public _invalidMaterial () {
this._renderable._invalidMaterial();
}
public _updateMaterial (init: boolean) {
this._renderable._updateMaterial(this, init);
}
public _updateHeight () {
if (this._renderable._meshData == null) {
return;
}
const vertexData = new Float32Array(TERRAIN_BLOCK_VERTEX_SIZE * TERRAIN_BLOCK_VERTEX_COMPLEXITY * TERRAIN_BLOCK_VERTEX_COMPLEXITY);
let index = 0;
bbMin.set(Number.MAX_VALUE, Number.MAX_VALUE, Number.MAX_VALUE);
bbMax.set(Number.MIN_VALUE, Number.MIN_VALUE, Number.MIN_VALUE);
for (let j = 0; j < TERRAIN_BLOCK_VERTEX_COMPLEXITY; ++j) {
for (let i = 0; i < TERRAIN_BLOCK_VERTEX_COMPLEXITY; ++i) {
const x = this._index[0] * TERRAIN_BLOCK_TILE_COMPLEXITY + i;
const y = this._index[1] * TERRAIN_BLOCK_TILE_COMPLEXITY + j;
const position = this._terrain.getPosition(x, y);
const normal = this._terrain.getNormal(x, y);
const uv = new Vec2(i / TERRAIN_BLOCK_VERTEX_COMPLEXITY, j / TERRAIN_BLOCK_VERTEX_COMPLEXITY);
vertexData[index++] = position.x;
vertexData[index++] = position.y;
vertexData[index++] = position.z;
vertexData[index++] = normal.x;
vertexData[index++] = normal.y;
vertexData[index++] = normal.z;
vertexData[index++] = uv.x;
vertexData[index++] = uv.y;
Vec3.min(bbMin, bbMin, position);
Vec3.max(bbMax, bbMax, position);
}
}
this._renderable._meshData.vertexBuffers[0].update(vertexData);
this._renderable._model!.createBoundingShape(bbMin, bbMax);
this._renderable._model!.updateWorldBound();
}
public _updateWeightMap () {
const nlayers = this.getMaxLayer();
if (nlayers === 0) {
if (this._weightMap != null) {
this._weightMap.destroy();
this._weightMap = null;
}
return;
}
if (this._weightMap == null) {
this._weightMap = new Texture2D();
this._weightMap.create(this._terrain.weightMapSize, this._terrain.weightMapSize, PixelFormat.RGBA8888);
this._weightMap.setFilters(Filter.LINEAR, Filter.LINEAR);
this._weightMap.setWrapMode(WrapMode.CLAMP_TO_EDGE, WrapMode.CLAMP_TO_EDGE);
}
const weightData = new Uint8Array(this._terrain.weightMapSize * this._terrain.weightMapSize * 4);
let weightIndex = 0;
for (let j = 0; j < this._terrain.weightMapSize; ++j) {
for (let i = 0; i < this._terrain.weightMapSize; ++i) {
const x = this._index[0] * this._terrain.weightMapSize + i;
const y = this._index[1] * this._terrain.weightMapSize + j;
const w = this._terrain.getWeight(x, y);
weightData[weightIndex * 4 + 0] = Math.floor(w.x * 255);
weightData[weightIndex * 4 + 1] = Math.floor(w.y * 255);
weightData[weightIndex * 4 + 2] = Math.floor(w.z * 255);
weightData[weightIndex * 4 + 3] = Math.floor(w.w * 255);
weightIndex += 1;
}
}
this._weightMap.uploadData(weightData);
}
public _updateLightmap (info: TerrainBlockLightmapInfo) {
this._lightmapInfo = info;
this._invalidMaterial();
}
}
/**
* @en Terrain
* @zh 地形组件
*/
@ccclass('cc.Terrain')
@help('i18n:cc.Terrain')
@executeInEditMode
@disallowMultiple
export class Terrain extends Component {
@type(TerrainAsset)
@serializable
@disallowAnimation
protected __asset: TerrainAsset|null = null;
@type(EffectAsset)
@serializable
@disallowAnimation
@visible(false)
protected _effectAsset: EffectAsset|null = null;
@type(TerrainBlockLightmapInfo)
@serializable
@disallowAnimation
protected _lightmapInfos: TerrainBlockLightmapInfo[] = [];
@type(CCBoolean)
@serializable
@disallowAnimation
protected _receiveShadow = false;
@type(CCBoolean)
@serializable
@disallowAnimation
protected _useNormalmap = false;
@type(CCBoolean)
@serializable
@disallowAnimation
protected _usePBR = false;
protected _tileSize = 1;
protected _blockCount: number[] = [1, 1];
protected _weightMapSize = 128;
protected _lightMapSize = 128;
protected _heights: Uint16Array = new Uint16Array();
protected _weights: Uint8Array = new Uint8Array();
protected _normals: number[] = [];
protected _layerList: (TerrainLayer|null)[] = [];
protected _layerBuffer: number[] = [];
protected _blocks: TerrainBlock[] = [];
protected _sharedIndexBuffer: Buffer|null = null;
constructor () {
super();
// initialize layers
for (let i = 0; i < TERRAIN_MAX_LAYER_COUNT; ++i) {
this._layerList.push(null);
}
}
@type(TerrainAsset)
@visible(true)
public set _asset (value: TerrainAsset|null) {
if (this.__asset !== value) {
this.__asset = value;
if (this.__asset != null && this.valid) {
// rebuild
for (let i = 0; i < this._blocks.length; ++i) {
this._blocks[i].destroy();
}
this._blocks = [];
this._buildImp();
}
}
}
public get _asset () {
return this.__asset;
}
/**
* @en Terrain effect asset
* @zh 地形特效资源
*/
@type(EffectAsset)
@visible(true)
public set effectAsset (value) {
if (this._effectAsset === value) {
return;
}
this._effectAsset = value;
for (let i = 0; i < this._blocks.length; ++i) {
this._blocks[i]._invalidMaterial();
}
}
public get effectAsset () {
return this._effectAsset;
}
/**
* @en Receive shadow
* @zh 是否接受阴影
*/
@editable
get receiveShadow () {
return this._receiveShadow;
}
set receiveShadow (val) {
this._receiveShadow = val;
for (let i = 0; i < this._blocks.length; i++) {
this._blocks[i]._invalidMaterial();
}
}
/**
* @en Use normal map
* @zh 是否使用法线贴图
*/
@editable
get useNormalMap () {
return this._useNormalmap;
}
set useNormalMap (val) {
this._useNormalmap = val;
for (let i = 0; i < this._blocks.length; i++) {
this._blocks[i]._invalidMaterial();
}
}
/**
* @en Use pbr material
* @zh 是否使用物理材质
*/
@editable
get usePBR () {
return this._usePBR;
}
set usePBR (val) {
this._usePBR = val;
for (let i = 0; i < this._blocks.length; i++) {
this._blocks[i]._invalidMaterial();
}
}
/**
* @en get terrain size
* @zh 获得地形大小
*/
public get size () {
const sz = new Size(0, 0);
sz.width = this.blockCount[0] * TERRAIN_BLOCK_TILE_COMPLEXITY * this.tileSize;
sz.height = this.blockCount[1] * TERRAIN_BLOCK_TILE_COMPLEXITY * this.tileSize;
return sz;
}
/**
* @en get tile size
* @zh 获得栅格大小
*/
get tileSize () {
return this._tileSize;
}
/**
* @en get tile count
* @zh 获得栅格数量
*/
public get tileCount () {
return [this.blockCount[0] * TERRAIN_BLOCK_TILE_COMPLEXITY, this.blockCount[1] * TERRAIN_BLOCK_TILE_COMPLEXITY];
}
/**
* @en get vertex count
* @zh 获得顶点数量
*/
public get vertexCount () {
const _vertexCount = this.tileCount;
_vertexCount[0] += 1;
_vertexCount[1] += 1;
return _vertexCount;
}
/**
* @en get block count
* @zh 获得地形块数量
*/
get blockCount () {
return this._blockCount;
}
/**
* @en get light map size
* @zh 获得光照图大小
*/
get lightMapSize () {
return this._lightMapSize;
}
/**
* @en get weight map size
* @zh 获得权重图大小
*/
get weightMapSize () {
return this._weightMapSize;
}
/**
* @en get height buffer
* @zh 获得高度缓存
*/
get heights () {
return this._heights;
}