物体在一个正方形区域里面做永不停止的随机运动？

物体在一个正方形区域里面做永不停止的随机运动，请问怎么实现呢？

状态机
分分别写

几个模块
interface state{
update(dt)
end(){}
}
class moveState imp state {}
class runState imp state {}
class stateMager {
stateKv:{} = null
currentState = null
update(){}
checkoutState(){}
}

ai 写的

import { Size } from "cc";
import { UITransform } from "cc";
import { _decorator, Component, Vec3 } from "cc";
const { ccclass, property } = _decorator;

@ccclass("RandomMovement")
export class RandomMovement extends Component {
	@property(Number)
	speed = 100;

	private _parentSize: Size = new Size();
	private _startPos: Vec3 = new Vec3();

	start() {
		const parent = this.node.parent!;

		this._parentSize.set(parent.getComponent(UITransform)!.contentSize);
		this._startPos.set(this.node.getPosition());
	}

	update(dt: number) {
		const direction = new Vec3(Math.random() * 2 - 1, Math.random() * 2 - 1, 0);
		const movement = direction.normalize().multiplyScalar(this.speed * dt);
		const nextPos = this.node.getPosition().clone().add(movement);

		if (nextPos.x < -this._parentSize.x / 2 || nextPos.x > this._parentSize.x / 2) {
			nextPos.x = Math.min(Math.max(nextPos.x, -this._parentSize.x / 2), this._parentSize.x / 2);
		}

		if (nextPos.y < -this._parentSize.y / 2 || nextPos.y > this._parentSize.y / 2) {
			nextPos.y = Math.min(Math.max(nextPos.y, -this._parentSize.y / 2), this._parentSize.y / 2);
		}

		this.node.setPosition(nextPos);
	}
}

image780×631 72.4 KB

ai写的