cocos-engine/tests/physics/event.ts

import { director, Node, Vec3 } from "../../cocos/core";
import { physics } from "../../exports/physics-framework";

/**
 * This function is used to test some event callback
 */
export default function (parent: Node, steps = 300) {
    const nodeDynamic = new Node('DynamicA');
    parent.addChild(nodeDynamic);
    nodeDynamic.worldPosition = new Vec3(0, 4, 0);
    nodeDynamic.addComponent(physics.RigidBody);
    const colliderDynamic: physics.SphereCollider = nodeDynamic.addComponent(physics.SphereCollider);
    const colliderTrigger: physics.BoxCollider = nodeDynamic.addComponent(physics.BoxCollider);
    colliderTrigger.isTrigger = true;

    const nodeStatic = new Node('StaticB');
    parent.addChild(nodeStatic);
    nodeStatic.addComponent(physics.BoxCollider);

    function onCollision(event: physics.ICollisionEvent) {
        expect(event.selfCollider).toBe(colliderDynamic);
    }

    function onTrigger(event: physics.ITriggerEvent) {
        expect(event.selfCollider).toBe(colliderTrigger);
    }

    // collision event
    expect(colliderDynamic.needCollisionEvent).toBe(false);
    colliderDynamic.on('onCollisionEnter', onCollision);

    expect(colliderDynamic.needCollisionEvent).toBe(true);

    // trigger event
    expect(colliderTrigger.needTriggerEvent).toBe(false);
    colliderTrigger.on('onTriggerEnter', onTrigger);
    expect(colliderTrigger.needTriggerEvent).toBe(true);

    const dt = physics.PhysicsSystem.instance.fixedTimeStep;
    for (let i = 0; i < steps; i++) {
        director.tick(dt);
    }

    colliderDynamic.off('onCollisionEnter', onCollision);
    expect(colliderDynamic.needCollisionEvent).toBe(false);
    colliderTrigger.off('onTriggerEnter', onTrigger);
    expect(colliderTrigger.needTriggerEvent).toBe(false);

    parent.destroyAllChildren();
    parent.removeAllChildren();
}