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新建立方体，修改比例使之形状类似于跑道

在场景中新建立方体当做游戏角色，给角色添加rigidbody和boxcollider

新建脚本，取任意符合规定的名称。此处起名为PlayerMovement

import { _decorator, Component, Node } from 'cc';
const { ccclass, property } = _decorator;

@ccclass('PlayerMovement')
export class PlayerMovement extends Component {
    @property(Number)
    forwardForce:number = 0;

    @property(RigidBody)
    rigidBody: RigidBody;
    start() {
      input.on(Input.EventType.KEY_DOWN, this.onKeyDown, this);
      input.on(Input.EventType.KEY_UP, this.onKeyUp, this);
    }

    update(deltaTime: number) {
      let force = new Vec3(0,0, this.forwardForce*deltaTime);
      this.rigidBody.applyForce(force);
    }

    onDestroy(){
      input.off(Input.EventType.KEY_DOWN, this.onKeyDown, this);
      input.off(Input.EventType.KEY_UP, this.onKeyUp, this);
    }

    onKeyDown(event: EventKeyboard){
      if(event.keyCode == KeyCode.KEY_F){
          
      }
    }

    onKeyUp(event: EventKeyboard){
      if(event.keyCode == KeyCode.KEY_F){
          
      }
    }
}