/** 动物挂载脚本 */

import { AnimalState } from "../../game/data/GameData";

const { ccclass, property } = cc._decorator;

@ccclass
export default class Animals extends cc.Component {

    @property(cc.Animation)
    ani: cc.Animation = null;

    clipArr: Array<cc.AnimationClip> = new Array<cc.AnimationClip>();
    private _state: AnimalState = -1;

    configID = 0;
    curTargetPoint: cc.Vec2 = null;
    angle = null;
    speed = 0.5;
    walkTotleFarme = 0;
    isWalk = false;
    pointIndex = -1;
    pastureData = null;

    start() {
        this.curTargetPoint = this.node.getPosition();
        this.getNextPoint();
    }

    setState(state, configID) {
        this.configID = configID;
        if (!this.pastureData) {
            this.pastureData = gData.pastureSystem.getPastureData(configID);
        }
        if (this._state == state) {
            return;
        }
        this._state = state;
        let clipName = ''
        switch (this._state) {
            case AnimalState.Hanger:
                clipName = this.configID + '_' + 0;
                break;
            case AnimalState.Eat:
                clipName = this.configID + '_' + 1;
                break;
            case AnimalState.Wait:
                clipName = this.configID + '_' + 2;
                break;
        }
        this.ani.play(clipName);
    }

    getNextPoint() {
        let ran = Math.random() * 2 + 3;
        this.scheduleOnce(() => {
            this.pointIndex = this.pastureData.getCanMoveIndex(this.pointIndex);
            this.curTargetPoint = this.pastureData.getCanMoveIndexPoint(this.pointIndex);
            let distance = this.node.getPosition().sub(this.curTargetPoint).mag();
            this.angle = Math.atan2(this.curTargetPoint.y - this.node.position.y, this.curTargetPoint.x - this.node.position.x);
            this.walkTotleFarme = distance / this.speed;
            let clipName = this.configID + '_' + 1;
            this.node.angle = this.angle;
            if (this.curTargetPoint.x > this.node.position.x) {
                this.node.scaleX = -0.3;
            }
            else {
                this.node.scaleX = 0.3;
            }
            this.ani.play(clipName);
            this.isWalk = true;
        }, ran)
    }

    update(dt) {
        if (this.isWalk) {
            let x = Math.cos(this.angle) * this.speed;
            let y = Math.sin(this.angle) * this.speed;
            this.node.setPosition(this.node.getPosition().add(cc.v2(x, y)));
            this.walkTotleFarme--;
            if (this.walkTotleFarme <= 0) {
                this.isWalk = false;
                this.node.setPosition(this.curTargetPoint);
                this.setState(this._state, this.configID);
                this.getNextPoint();
            }
        }
    }
}