// Learn TypeScript:
//  - [Chinese] https://docs.cocos.com/creator/manual/zh/scripting/typescript.html
//  - [English] http://www.cocos2d-x.org/docs/creator/manual/en/scripting/typescript.html
// Learn Attribute:
//  - [Chinese] https://docs.cocos.com/creator/manual/zh/scripting/reference/attributes.html
//  - [English] http://www.cocos2d-x.org/docs/creator/manual/en/scripting/reference/attributes.html
// Learn life-cycle callbacks:
//  - [Chinese] https://docs.cocos.com/creator/manual/zh/scripting/life-cycle-callbacks.html
//  - [English] http://www.cocos2d-x.org/docs/creator/manual/en/scripting/life-cycle-callbacks.html

const {ccclass, property} = cc._decorator;

@ccclass
export default class NewClass extends cc.Component {

    @property
    duratrion : number = 0.5;
    @property
    moveAmountX : number = 100;
    @property
    moveAmountY : number = 50;
    moveEnemy : cc.ActionInterval;

    @property(cc.Prefab)
    yellowBullet: cc.Prefab = null;

    @property
    enemyLife: number = 3

    playAnimation : Boolean = true;

    setMovements() {
        var moveLeft = cc.moveBy(this.duratrion, cc.v2(-this.moveAmountX, -this.moveAmountY)).easing(cc.easeCircleActionInOut());
        var moveRight = cc.moveBy(this.duratrion, cc.v2(this.moveAmountX, -this.moveAmountY)).easing(cc.easeCircleActionInOut());
        return cc.repeatForever(cc.sequence(moveLeft, moveRight));
    }

    shootBullets() {
        var bullet = cc.instantiate(this.yellowBullet);
        bullet.setPosition(this.node.position.x, this.node.position.y - 60);
        this.node.parent.addChild(bullet);
    }

    // LIFE-CYCLE CALLBACKS:

    onLoad () {
        this.moveEnemy = this.setMovements();
        this.node.runAction(this.moveEnemy);
        
        this.schedule(this.shootBullets, Math.random() * 0.5 + 0.5, cc.macro.REPEAT_FOREVER, 0);
    }
    onCollisionEnter(otherCollider, selfCollider) {
        if(otherCollider.name === 'greenbullet<PolygonCollider>') {
            this.enemyLife--;
            if(this.enemyLife <= 0 && this.playAnimation) {
                this.node.stopAllActions();
                this.playAnimation = false;
                this.node.getComponent(cc.Animation).play();
            }
        }
        if(otherCollider.name === 'player<PolygonCollider>') {
            this.node.destroy();
            cc.director.loadScene('Menu');
        }
    }

    removeExplosion() {
        this.node.destroy();
        this.node.parent.getComponent('Game').spawnShips();
    }

    start () {

    }

    update (dt) {
        if(this.node.position.y <= -(this.node.parent.getContentSize().height)) {
            this.node.destroy();
            cc.director.loadScene('Menu');
        }
    }
}