team2_jj/assets/scripts/battle/Bullet.ts

import { _decorator, Component, Sprite, SpriteFrame, UITransform, v3, Vec3, sp, Quat } from 'cc';
import { DataSystem } from '../core/data/DataSystem';
import { ResourceLoader } from '../core/resourceManager/ResourceLoader';
import { ConfigData } from '../data/ConfigData';
import { BattleData, BattleState } from './BattleData';
import { BulletData } from './BulletData';
import { Monster } from './Monster';
const { ccclass, property } = _decorator;

@ccclass('Bullet')
export class Bullet extends Component {
    @property({ type: Sprite, tooltip: "子弹资源" }) bulletSprite: Sprite;
    @property({ type: sp.Skeleton, tooltip: "受击特效" }) hitEffect: sp.Skeleton;

    @property({ type: [sp.SkeletonData], tooltip: "受击特效集合" }) hitArray: Array<sp.SkeletonData> = [];
    @property({ type: [SpriteFrame], tooltip: "子弹精灵集合" }) bulletSprites: Array<SpriteFrame> = [];

    private _battle: BattleData;
    private data: BulletData;
    private target: Monster;
    private config: any;

    private beenHit = false;
    private get battle(): BattleData {
        if (!this._battle) {
            this._battle = DataSystem.getData(BattleData);
        }
        return this._battle;
    }

    async start() {
        this.config = DataSystem.getData(ConfigData)["skill"];
    }

    update(dt: number) {
        if (this.target && this.target.node && this.battle.battleState == BattleState.inBattle) {
            if (!this.beenHit) {
                this.move();
                this.look();
                this.checkHit();
            }
        } else {
            this.node.destroy();
        }
    }
    public async setData(data: BulletData) {
        this.data = data;
        if (this.data) {
            // this.hitEffect = this.node.addComponent(sp.Skeleton);
            let spData = this.hitArray[this.data.hit_res - 1];
            this.hitEffect.skeletonData = spData;
            this.target = DataSystem.getData(BattleData)._monsters[this.data.target];
            this.bulletSprite.spriteFrame = this.bulletSprites[data.res - 1];
            let direction = this.battle.slots.get(data.from)._direction;
            let offset = direction == 1 ? -this.battle.slots.get(data.from).node.getComponent(UITransform).width / 2 : this.battle.slots.get(data.from).node.getComponent(UITransform).width / 2;
            this.node.scale = this.battle.slots.get(data.from).node.scale;
            this.node.setPosition(v3(this.battle.slots.get(data.from).node.position).add(v3(offset, 0, 0)));
            this.bulletSprite.node.scale.multiplyScalar(this.data.isLeader ? 1 : 0.8);
        }
    }
    /**子弹转向 */
    private look(): void {
        let radian = 0;
        let node = this.target.node;
        let tran = this.target.node.getComponent(UITransform);
        if (this.node.scale.x < 0) {
            radian = Math.atan2((node.position.y + tran.height / 2) - this.node.position.y, node.position.x - this.node.position.x);
        }
        else {
            radian = Math.PI - Math.atan2(this.target.node.position.y - this.node.position.y, this.target.node.position.x - this.node.position.x);
            if (radian > Math.PI) {
                radian -= Math.PI * 2;
            }
            radian = -radian;
        }
        let distance = Vec3.distance(this.node.position, v3(this.target.node.position.clone().add(v3(0, this.target.getComponent(UITransform).height * this.target.node.scale.y / 20, 0))));
        if (distance > 150 || this.node.rotation.z == 0) {//位置接近时，停止转向
            this.node.setRotationFromEuler(v3(0, 0, 180 / Math.PI * radian));
        } else {
            this.node.setRotation(this.node.rotation);
        }
    }
    /**子弹移动 */
    private move(): void {
        let node = this.target.node;
        let tran = this.target.node.getComponent(UITransform);
        let angle = Math.atan2((node.position.y + tran.height * node.scale.y / 2) - this.node.position.y, node.position.x - this.node.position.x);
        this.node.position.add(v3(Math.cos(angle) * this.data.speed, Math.sin(angle) * this.data.speed, 0));
    }
    /**检查是否击中 */
    private checkHit() {
        let targetPosition = this.target.node.position.clone();
        targetPosition.y += this.target.getComponent(UITransform).height * this.target.node.scale.y / 2;
        let distance = Vec3.distance(this.node.position, targetPosition);
        if (distance <= 10) {
            this.hit();
        }
    }
    /**击中 */
    private async hit() {
        this.beenHit = true;
        let node = this.target.node;
        let tran = this.target.node.getComponent(UITransform);
        this.node.position = v3(node.position.x, node.position.y + tran.height * node.scale.y / 2, node.position.z);
        this.bulletSprite.node.active = false;
        this.node.setRotationFromEuler(v3(0, 0, 0));
        this.hitEffect.addAnimation(0, "animation", false);
        this.hitEffect.setCompleteListener(() => {
            let config = this.config[this.data.skillID]["attType"];
            let type = parseInt(config.split(":")[0]);
            if (type == 1) {
                DataSystem.getData(BattleData)._hitMonster.push(this.data);
            } else {
                this.pushRangeMonsterToHit();
            }
            this.node.destroy();
        });
    }
    /**将攻击范围内的敌人放入受击容器 */
    private pushRangeMonsterToHit(): void {
        let node = this.target.node;
        let config = this.config[this.data.skillID]["attType"];
        let range = parseInt(config.split(":")[1].split(",")[0]);
        let maxCount = parseInt(config.split(":")[1].split(",")[1]);
        let monsters = DataSystem.getData(BattleData)._monsters;
        let result = [];
        for (let i = 0; i < monsters.length; i++) {
            if (Vec3.distance(node.position, monsters[i].node.position) <= range) {
                if (result.length < maxCount - 1) {
                    result.push(i);
                }
            }
        }
        DataSystem.getData(BattleData)._hitMonster.push(this.data);
        for (let j = 0; j < result.length; j++) {
            DataSystem.getData(BattleData)._hitMonster.push(this.data);
        }
    }
}