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89 lines
3.1 KiB
89 lines
3.1 KiB
import { _decorator, Collider2D, Component, Contact2DType, IPhysics2DContact, Node, Vec3 } from 'cc';
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import { SuDace } from './SuDace';
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import { SuDaceEnemy } from './SuDaceEnemy';
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const { ccclass, property } = _decorator;
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@ccclass('SuDaceBullet')
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export class SuDaceBullet extends Component {
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@property
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moveSpeed: number = 100;
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@property
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hitRadius = 24;
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/**攻击力 */
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@property
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damage = 1;
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/** true 表示陷阱落石：仅向下运动，并回收到 stonePool */
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@property
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isStone = false;
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private _col: Collider2D | null = null;
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onEnable() {
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this._col = this.node.getComponent(Collider2D);
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this._col?.on(Contact2DType.BEGIN_CONTACT, this.onBeginContact, this);
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}
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onDisable() {
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this._col?.off(Contact2DType.BEGIN_CONTACT, this.onBeginContact, this);
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this._col = null;
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}
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update(deltaTime: number) {
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let direction: Vec3;
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if (this.isStone) {
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// 落石固定竖直下落，避免被角度/复用状态影响成横向发射
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direction = new Vec3(0, -1, 0);
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} else {
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// 普通子弹按角度飞行
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const angle = this.node.angle * Math.PI / 180 + Math.PI / 2;
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// Node.angle 在 2D 中是“顺时针为正”，而 sin/cos 按“逆时针为正”来解释角度
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// 这里对 Y 分量取反，修正“右下变右上/上下颠倒”的问题
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direction = new Vec3(Math.cos(angle), -Math.sin(angle), 0).normalize();
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}
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// 地图节点每帧在移动(相机跟随)，子弹必须用世界坐标移动，否则会叠加父节点位移导致“角度对但轨迹偏”
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const wp = this.node.worldPosition;
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this.node.setWorldPosition(
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wp.x + direction.x * deltaTime * this.moveSpeed,
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wp.y + direction.y * deltaTime * this.moveSpeed,
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wp.z
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);
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this.checkEnemyHitByDistance();
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}
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private onBeginContact(self: Collider2D, other: Collider2D, contact: IPhysics2DContact | null) {
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if (!this.node.active || !other?.node?.active) return;
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const otherName = other.node.name.toLowerCase();
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if (otherName === "enemy" || otherName.includes("enemy")) {
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this.hitEnemy(other.node);
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}
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}
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private checkEnemyHitByDistance() {
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const enemyRoot = SuDace.instance?.map?.enemyNode;
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if (!enemyRoot || !this.node.active) return;
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const bp = this.node.worldPosition;
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for (let i = 0; i < enemyRoot.children.length; i++) {
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const enemy = enemyRoot.children[i];
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if (!enemy.active) continue;
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if (Vec3.distance(bp, enemy.worldPosition) <= this.hitRadius) {
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this.hitEnemy(enemy);
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break;
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}
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}
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}
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private hitEnemy(enemy: Node) {
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if (!this.node.active || !enemy?.active) return;
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enemy.getComponent(SuDaceEnemy)?.hit(this.damage);
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if (this.isStone) {
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SuDace.instance?.recycleStone(this.node);
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} else {
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SuDace.instance?.recycleBullet(this.node);
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}
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}
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}
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