import CMath from "../../../../util/CMath";
import { SpriteActionType } from "../FSprite";
import PSprite from "../PSprite";
import SkillBase from "../skill/SkillBase";
import SkillFixed from "../skill/SkillFixed";
import AIBase from "./AIBase";

const { ccclass, property } = cc._decorator;

/**
 * 伙伴AI
 * 
 * AI特性:
 * 1.有攻击对象的时候，主动攻击
 * 2.没有攻击对象的时候，跟随
 */
@ccclass
export default class AIPet extends AIBase {

    onLoad() {
        super.onLoad();
        this.speed = 300;
        this.sprite.SPEED_WALK = this.speed;
        this.addSkill()
    }
    public addSkill() {
        let skillFixed: SkillFixed = this.node.addComponent(SkillFixed)
        skillFixed.count = 1;
        skillFixed.time = 0;
        skillFixed.btime = 1;
        skillFixed.CD = 800;

        cc.resources.load('prefab/bullet/' + this.sprite.attrData.bullet, cc.Prefab, (err, prefab: cc.Prefab) => {
            if (err) {
                cc.error(err);
            } else {
                //加载结束
                skillFixed.mBullet = prefab
                this.skills = this.node.getComponents(SkillBase);
            }
        });
    }

    update(dt) {
        if (this.sprite && this.sprite.isActive) {
            if (this.sprite.gamePause) {
                return;
            }
            this.AI();
        }
    }

    public AI() {
        let target = this.checkTarget();
        if (target) {
            if (!this.canSkill) {
                return;
            }
            (this.sprite as PSprite).stopFollow();
            if (this.sprite.isActive) {
                let skill: SkillBase = this.checkSkill(target);
                if (skill) {
                    if (this.speed <= 0) {
                        this.canSkill = false;
                        skill.exe(target, () => {
                            this.canSkill = true;
                            // cc.log('技能使用结束 :',skill)
                        });
                    } else {
                        let p1 = this.sprite.node.getPosition()
                        let p2 = target.node.getPosition()
                        let dis = CMath.getDistance(p1, p2);
                        if (dis < skill.range) {
                            this.canSkill = false;
                            skill.exe(target, () => {
                                this.canSkill = true;
                                // cc.log('技能使用结束 :',skill)
                            });
                        } else {
                            this.walk(skill.range);
                            // this.moveToTarget(target)
                        }
                    }
                } else {
                    // this.walk(300);
                }
            }
        } else {
            (this.sprite as PSprite).startFollow();
        }
    }
    /**
     * 远程怪物的闲逛
     */
    public walk(distance) {
        if (this.speed > 0) {
            this.canSkill = false;
            this.sprite.setDir(this.getRandState(distance));
            this.sprite.playAction(SpriteActionType.move, true)
            cc.tween(this).delay(1).call(() => {
                this.sprite.setDir({ x: 0, y: 0 });
                this.sprite.playAction(SpriteActionType.stand, true)
            }).delay(1).call(() => {
                this.canSkill = true;
            }).start()
        } else {
            this.canSkill = true;
            this.sprite.setDir({ x: 0, y: 0 });
            this.sprite.playAction(SpriteActionType.stand, true)
        }
    }
}