playcanvas
Version:
PlayCanvas WebGL game engine
250 lines (247 loc) • 7.11 kB
JavaScript
import { Color } from '../../core/math/color.js';
import { Curve } from '../../core/math/curve.js';
import { CurveSet } from '../../core/math/curve-set.js';
import { Vec2 } from '../../core/math/vec2.js';
import { Vec3 } from '../../core/math/vec3.js';
import { Vec4 } from '../../core/math/vec4.js';
import { GraphNode } from '../../scene/graph-node.js';
import { Asset } from '../asset/asset.js';
const components = [
'x',
'y',
'z',
'w'
];
const vecLookup = [
undefined,
undefined,
Vec2,
Vec3,
Vec4
];
function rawToValue(app, args, value, old) {
switch(args.type){
case 'boolean':
return !!value;
case 'number':
if (typeof value === 'number') {
return value;
} else if (typeof value === 'string') {
const v = parseInt(value, 10);
if (isNaN(v)) return null;
return v;
} else if (typeof value === 'boolean') {
return 0 + value;
}
return null;
case 'json':
{
const result = {};
if (Array.isArray(args.schema)) {
if (!value || typeof value !== 'object') {
value = {};
}
for(let i = 0; i < args.schema.length; i++){
const field = args.schema[i];
if (!field.name) continue;
if (field.array) {
result[field.name] = [];
const arr = Array.isArray(value[field.name]) ? value[field.name] : [];
for(let j = 0; j < arr.length; j++){
result[field.name].push(rawToValue(app, field, arr[j]));
}
} else {
const val = value.hasOwnProperty(field.name) ? value[field.name] : field.default;
result[field.name] = rawToValue(app, field, val);
}
}
}
return result;
}
case 'asset':
if (value instanceof Asset) {
return value;
} else if (typeof value === 'number') {
return app.assets.get(value) || null;
} else if (typeof value === 'string') {
return app.assets.get(parseInt(value, 10)) || null;
}
return null;
case 'entity':
if (value instanceof GraphNode) {
return value;
} else if (typeof value === 'string') {
return app.getEntityFromIndex(value);
}
return null;
case 'rgb':
case 'rgba':
if (value instanceof Color) {
if (old instanceof Color) {
old.copy(value);
return old;
}
return value.clone();
} else if (value instanceof Array && value.length >= 3 && value.length <= 4) {
for(let i = 0; i < value.length; i++){
if (typeof value[i] !== 'number') {
return null;
}
}
if (!old) old = new Color();
old.r = value[0];
old.g = value[1];
old.b = value[2];
old.a = value.length === 3 ? 1 : value[3];
return old;
} else if (typeof value === 'string' && /#(?:[0-9a-f]{2}){3,4}/i.test(value)) {
if (!old) {
old = new Color();
}
old.fromString(value);
return old;
}
return null;
case 'vec2':
case 'vec3':
case 'vec4':
{
const len = parseInt(args.type.slice(3), 10);
const vecType = vecLookup[len];
if (value instanceof vecType) {
if (old instanceof vecType) {
old.copy(value);
return old;
}
return value.clone();
} else if (value instanceof Array && value.length === len) {
for(let i = 0; i < value.length; i++){
if (typeof value[i] !== 'number') {
return null;
}
}
if (!old) old = new vecType();
for(let i = 0; i < len; i++){
old[components[i]] = value[i];
}
return old;
}
return null;
}
case 'curve':
if (value) {
let curve;
if (value instanceof Curve || value instanceof CurveSet) {
curve = value.clone();
} else {
const CurveType = value.keys[0] instanceof Array ? CurveSet : Curve;
curve = new CurveType(value.keys);
curve.type = value.type;
}
return curve;
}
break;
}
return value;
}
function attributeToValue(app, schema, value, current) {
if (schema.array) {
return value.map((item, index)=>rawToValue(app, schema, item, current ? current[index] : null));
}
return rawToValue(app, schema, value, current);
}
function assignAttributesToScript(app, attributeSchemaMap, data, script) {
if (!data) return;
for(const attributeName in attributeSchemaMap){
const attributeSchema = attributeSchemaMap[attributeName];
const dataToAssign = data[attributeName];
if (dataToAssign === undefined) continue;
script[attributeName] = attributeToValue(app, attributeSchema, dataToAssign, script[attributeName]);
}
}
class ScriptAttributes {
static{
this.assignAttributesToScript = assignAttributesToScript;
}
static{
this.attributeToValue = attributeToValue;
}
constructor(scriptType){
this.scriptType = scriptType;
this.index = {};
}
static{
this.reservedNames = new Set([
'app',
'entity',
'enabled',
'_enabled',
'_enabledOld',
'_destroyed',
'__attributes',
'__attributesRaw',
"__scriptType",
'__executionOrder',
'_callbacks',
'_callbackActive',
'has',
'get',
'on',
'off',
'fire',
'once',
'hasEvent'
]);
}
add(name, args) {
if (this.index[name]) {
return;
} else if (ScriptAttributes.reservedNames.has(name)) {
return;
}
this.index[name] = args;
Object.defineProperty(this.scriptType.prototype, name, {
get: function() {
return this.__attributes[name];
},
set: function(raw) {
const evt = 'attr';
const evtName = `attr:${name}`;
const old = this.__attributes[name];
let oldCopy = old;
if (old && args.type !== 'json' && args.type !== 'entity' && old.clone) {
if (this.hasEvent(evt) || this.hasEvent(evtName)) {
oldCopy = old.clone();
}
}
if (args.array) {
this.__attributes[name] = [];
if (raw) {
for(let i = 0, len = raw.length; i < len; i++){
this.__attributes[name].push(rawToValue(this.app, args, raw[i], old ? old[i] : null));
}
}
} else {
this.__attributes[name] = rawToValue(this.app, args, raw, old);
}
this.fire(evt, name, this.__attributes[name], oldCopy);
this.fire(evtName, this.__attributes[name], oldCopy);
}
});
}
remove(name) {
if (!this.index[name]) {
return false;
}
delete this.index[name];
delete this.scriptType.prototype[name];
return true;
}
has(name) {
return !!this.index[name];
}
get(name) {
return this.index[name] || null;
}
}
export { ScriptAttributes, assignAttributesToScript };