DoomsdayRescue/assets/script/gameLogic/gameObject/player/dog_obj.ts

// Learn TypeScript:
//  - https://docs.cocos.com/creator/manual/en/scripting/typescript.html
// Learn Attribute:
//  - https://docs.cocos.com/creator/manual/en/scripting/reference/attributes.html
// Learn life-cycle callbacks:
//  - https://docs.cocos.com/creator/manual/en/scripting/life-cycle-callbacks.html

import Utils from "../../../framework/utils/utils";
import { ROLE_STATE } from "../../utrl/gameEnum";
import GameObject from "../gameObject";
import PlayerObject from "./playerObject";

const { ccclass, property } = cc._decorator;

enum state {
    standy = 0,
    walk = 1,
    hit = 2,
    die = 3,

}

@ccclass
export default class dog_obj extends GameObject {
    spine: any;
    followNode: any;
    curState: state;


    // LIFE-CYCLE CALLBACKS:

    // onLoad () {}

    start() {

        this.spine = this.node.$spine.getComponent(sp.Skeleton);
        Utils.loadSpineBunble(this.spine, 'dog/dog', () => {
            this.spine.setAnimation(0, 'standy1', true);
            this.curState = state.standy;
            this.setSkin('dog');
        });
    }

    setFollowTarget(node) {
        this.followNode = node;
    }

    setSkin(name) {
        this.spine.setSkin(name);
    }

    follow(target) {
        if (!target || !cc.isValid(target) || target.getComponent(PlayerObject).isDie) {
            if (this.node && cc.isValid(this.node)) {
                this.node.destroy();
            }
            return;
        }
        this.node.scaleX = target.getComponent(PlayerObject).player_view.node.scaleX;
        let len = target.position.sub(this.node.position).mag();
        let curState = this.curState;
        if (curState == state.standy && len > 80) {
            this.moveToTarget(target);
        }
        else if (curState == state.walk && len > 50) {
            this.moveToTarget(target);
        }
        else {
            this.curState = state.standy;
            if (this.spine.animation !== 'standy1') {
                this.node.getComponent(cc.RigidBody).linearVelocity = cc.v2();
                this.spine.setAnimation(0, 'standy1', true)
            }
        }
    }

    /**向目标移动
 * @param target 目标
 */
    private moveToTarget(target: cc.Node) {
        this.curState = state.walk;
        let v_sub = target.position.sub(this.node.position).normalize();
        let rad = Math.acos(v_sub.x);
        if (v_sub.y < 0) {
            rad = Math.PI * 2 - rad;
        }
        this.setLinearVelocity(rad);
        if (this.spine.animation !== 'walk1') {
            this.spine.setAnimation(0, 'walk1', true)
        }
    }
    /**设置刚体线性速度
     * @param rad 弧度角
     */
    private setLinearVelocity(rad: number) {
        this.node.getComponent(cc.RigidBody).linearVelocity = cc.v2(Math.cos(rad), Math.sin(rad)).mul(280);
    }

    update(dt) {
        this.follow(this.followNode)
    }
}