51 lines
1.8 KiB
TypeScript
51 lines
1.8 KiB
TypeScript
import { HeroViewComp } from "../../../hero/HeroViewComp";
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import { BattleMoveComp } from "./BattleMoveComp";
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import { ecs } from "../../../../../../extensions/oops-plugin-framework/assets/libs/ecs/ECS";
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@ecs.register('BattleMoveSystem')
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export class BattleMoveSystem extends ecs.ComblockSystem implements ecs.ISystemUpdate {
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filter(): ecs.IMatcher {
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return ecs.allOf(BattleMoveComp, HeroViewComp);
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}
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update(e: ecs.Entity) {
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const move = e.get(BattleMoveComp);
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const view = e.get(HeroViewComp);
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if (!move.moving) return;
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// 检测攻击范围内是否有敌人
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const hasEnemy = this.checkEnemiesInRange(e, view.dis);
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if (!hasEnemy) {
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// 计算移动量
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const delta = view.speed * this.dt * move.direction;
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const newX = view.node.position.x + delta;
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// 限制移动范围
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if (this.validatePosition(newX, move)) {
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view.node.setPosition(newX, view.node.position.y, 0);
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}
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}
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}
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/** 验证目标位置有效性 */
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private validatePosition(newX: number, move: BattleMoveComp): boolean {
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// 我方不能超过右边界，敌方不能超过左边界
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return move.direction === 1 ?
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newX <= move.targetX :
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newX >= move.targetX;
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}
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/** 检测攻击范围内敌人 */
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private checkEnemiesInRange(entity: ecs.Entity, range: number): boolean {
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const currentPos = entity.get(HeroViewComp).node.position;
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const team = entity.get(HeroViewComp).fac;
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return ecs.query(ecs.allOf(HeroViewComp)).some(e => {
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const view = e.get(HeroViewComp);
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return view.fac !== team &&
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Math.abs(currentPos.x - view.node.position.x) <= range;
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});
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}
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}
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