@dcl/ecs
Version:
Decentraland ECS
61 lines (60 loc) • 2.17 kB
JavaScript
;
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Object.defineProperty(exports, "__esModule", { value: true });
exports.cyclicParentingChecker = void 0;
const components = __importStar(require("../components"));
/**
* Transform parenting: cyclic dependency checker
* It checks only in modified Transforms
*
* Add this system with:
* ```ts
* engine.addSystem(cyclicParentingChecker(engine))
* ````
* And then it will check every tick the parenting.
*
* @public
*
* @params engine
* @returns a system
*/
function cyclicParentingChecker(engine) {
const Transform = components.Transform(engine);
return () => {
for (const entity of Transform.dirtyIterator()) {
let transform = Transform.getOrNull(entity);
while (transform && transform.parent) {
if (transform.parent === entity) {
console.error(`There is a cyclic parent with entity ${entity}`);
break;
}
else {
transform = Transform.getOrNull(transform.parent);
}
}
}
};
}
exports.cyclicParentingChecker = cyclicParentingChecker;